CN111561666B - LED light distribution structure and light-emitting road stud with the same - Google Patents

Abstract

An LED light distribution and emission structure and a light-emitting road stud with the structure. The LED light distribution and emission structure comprises a transparent shell (1), an LED light-emitting body (2), a separator (3), and an air layer (4). The LED light-emitting body (2) is encapsulated in the transparent shell (1) through the separator (3). After LED light emission matching, light path transmission, and optical structure parameters are matched with each other and combined with a molding structure to form a specific optical structure, a main light beam generates an upward displacement (ΔH) of a design target value, and the emission point of the main light beam in the normal direction falls at a position at the middle height of a light-emitting surface (1a) to form a light emission center and emit in a horizontal direction, so as to achieve the purpose of spatial light field optimization distribution in which the emitted light is mainly emitted in the horizontal direction and is supplemented by the upward direction, and the overall emission efficiency of the emitted light is high, and physical indicators such as structural strength and waterproof function are achieved, which is beneficial to the molding process of the shell and can more reasonably distribute the light intensity ratio in the horizontal and upward directions.

Description

LED light distribution structure and light-emitting road stud with the structure

Technical Field

The present invention relates to the field of light-emitting equipment, and in particular to an LED light distribution structure and a light-emitting road stud with the structure.

technical background

Light-emitting devices with light-inducing or auxiliary lighting functions include underground lamps, light-emitting road studs, solar ground lamps, delineators, etc., and mainly serve motor vehicle drivers or pedestrians. As light-emitting devices mainly used in public places, compared with ordinary light-emitting devices, not only their light-emitting performance must be considered, but also the structural strength requirements such as pressure resistance and impact resistance and waterproof requirements must be met, and some safety regulations must be met. Therefore, the comprehensive performance requirements of these light-emitting devices are more stringent. Among them, the most widely used light-emitting road studs are the representative.

Among them, luminous road studs, also called luminous raised road signs, are mainly installed on road surfaces and have a luminous function. They mainly serve as visual guidance or prompts for motor vehicle drivers and pedestrians, and can also serve as auxiliary road lighting equipment.

Most of the existing luminous road studs are raised luminous road studs, which are mainly installed on the road surface. The highest point of the road stud shall not be higher than 25mm above the road surface. There are also buried luminous road studs, which are buried in the road surface when in use, and the top is flush with the road surface or slightly protruding from the road surface, generally not more than 10mm, preferably less than 8mm. The lower the protruding part of the road surface, the better, otherwise the vehicle will be too bumpy and there will be safety hazards. In addition, the luminous road studs must have sufficient structural strength, such as resistance to wheel rolling and pressure of more than 10 tons, otherwise they are easy to break.

The main luminous structures of existing road studs can be summarized into two categories:

One type of luminous road stud has a luminous structure that uses a hole in the side of the road stud protective shell to emit light horizontally. The perforated lamp beads emit light directly in the original direction, and the light intensity in the horizontal direction accounts for a large proportion. The long-range light emission is good and is beneficial to driving. However, since the LED light intensity distribution is close to the 180° Lambertian body, the radial light emitted by the LED is blocked by the perforated shell, so the light energy utilization rate is low, the luminous area becomes smaller, and the luminous effect on short-range pedestrians is poor, which cannot well take into account both pedestrians and vehicles. Most raised road studs use this type of structure, while the above-mentioned perforated flat light emission structure is not suitable for buried road studs due to the height limit of the raised road studs.

In order to ensure the visible distance and long-distance luminous effect of the raised road studs, and at the same time ensure the compression and impact resistance of the road studs, a certain top shell thickness is required and the road studs are made to protrude higher from the road surface. This will not only cause vehicle bumps due to wheel impact, but also easily cause bumps to pedestrians or non-motor vehicle drivers, causing traffic accidents. It is not snow-proof, the process is cumbersome, and it is easy to get water in.

Another type of road studs adopts an inverted V-shaped LED light distribution structure, that is, the top of the light output groove is inverted V shape, and the straw hat lamp beads are arranged vertically or obliquely upward in the light output groove. The light emitted is refracted, reflected and transmitted upward and sideways. Most buried road studs adopt this structure. It has the following main defects:

1. The light intensity distribution of the lamp bead is unreasonable when it is pointed vertically or obliquely upward. A large part of the light energy is emitted upward through the top of the light output slot. The light intensity in the upward direction accounts for a large proportion, and the light energy utilization rate in the horizontal direction is low, resulting in a short visible distance and low recognition of long-range light. In addition, short-range light emission at a certain angle can easily cause light interference and glare to pedestrians and non-motor vehicle drivers, which can easily induce traffic accidents. According to the revised road lighting regulations, the illumination conditions on high-grade roads and urban main roads are increased to between 20-30Lux. In addition, with the development of lighting technology, the brightness of car lights is also increasing. Therefore, the limitations of low horizontal brightness and poor recognition of existing light-emitting road studs can no longer meet the new road development status.

2. The top part of the inverted V-shaped light outlet groove has a thin wall thickness, low structural strength, insufficient pressure and impact resistance, and is prone to damage to the shell;

3. The inverted V-shaped light outlet groove is not conducive to the injection molding process. The inverted V-shaped light outlet groove has large stress and is prone to cracking. In order to achieve a better remote lighting effect, the installation angle and positioning requirements of the straw hat lamp beads need to be adjusted, which brings inconvenience to assembly and leads to poor product consistency.

In summary, the existing lighting equipment represented by luminous road studs has unreasonable LED light distribution and emission structure, which leads to unreasonable light field distribution of the luminous light-guiding part of the road studs, and is not conducive to the reasonable distribution of light intensity ratio. The horizontal light energy utilization rate is low, the long-range luminous effect is poor, and the short-range luminous effect is easy to cause light interference. It cannot take into account both people and vehicles. Within the size limit of the existing traffic regulations, it is not conducive to the flattening and intensiveness of the equipment. The main shortcomings are poor structural strength, no pressure and impact resistance, and cumbersome manufacturing and installation. It cannot meet the new development needs and has become a problem that needs to be solved urgently in the industry.

Summary of the invention

The technical problem to be solved by the present invention is to provide a specific optical structure formed by matching light emission matching, light path transmission and optical structure parameters and combining with a molding structure to achieve an upward displacement (ΔH) of the main light beam generation design target value, and the main light beam in the normal direction is located at a position of the middle height of the light emitting surface (1a) to form a light emission center, and emits in the horizontal direction to achieve the purpose of optimizing the spatial light field distribution in which the emitted light is mainly emitted in the horizontal direction, and the emitted light is supplemented in the upward direction, and the overall emission efficiency of the emitted light is high, and the physical indicators such as structural strength and waterproof function are achieved. The LED light distribution emission structure and the light-emitting road stud with the structure can achieve a high proportion of lateral (horizontal) emitted light from the light emission structure within a limited height difference range [i.e., the height (H2) of the light emitting surface], and the long-distance The viewing distance is farther, the glare to people at a short distance is less, the distribution of the emitted light field is more optimized, the overall light energy utilization rate is higher, and it can be used in places with higher ambient illumination. In particular, it still has high recognition under the illumination condition of 30LUX. The design margin can also be increased to make the structure more optimized (the ridge height of the transparent shell can be reduced and the outer surface can be provided with an inclined surface to reduce the bumps of the vehicle and the bumps of people and the shell is not easy to wear, and the thickness of the surface layer of the transparent shell can also be increased to increase the structural strength), the compression and impact resistance are strong, the structural strength is high, and the molding process of the shell is conducive. It is particularly suitable for luminous equipment represented by luminous road studs, and the ratio of horizontal and upward luminous intensity can be more reasonably allocated to better suit the focus of different needs of vehicles and pedestrians. It can well take into account both people and vehicles and better meet the new needs of traffic development.

The present invention is based on optics, LED device characteristics, structural mechanics, molding technology (especially injection molding), traffic design specifications and road lighting specifications, and creatively proposes an LED light distribution and emission structure that is more suitable for light-emitting road studs, and a light-emitting road stud with better performance manufactured based on the advantages of the light emission structure and the design margin it can provide, with the main core creativity of:

1. Utilizing the luminous characteristics of LED devices, through luminous matching, optical design of the optical path and matching of optical structural parameters, and combining with a specific physical structure, an innovative design of the LED light distribution and emission structure is made, especially in the light incident surface, light emitting surface and its angle, height, width, side wall thickness and other optical parameters and physical structure matching. Through specific parameter matching, the purpose of optimizing the distribution of the light field (intensity) of the emitted light space is achieved, so as to achieve the expected purpose of the required design and facilitate process molding and production implementation. The light emitted by the LED luminous body is first concentrated by a focusing lens to achieve a high proportion of light intensity in the horizontal direction of the LED, and then according to the refraction theorem n1sinα1=n2sinα2, it is deflected or moved upward through secondary refraction of the inner and outer walls. The main emitted light of the LED is deflected and displaced upward by ΔH after being refracted by the transparent shell, and is emitted in the horizontal direction (when θ1＞θ2, and θ3＞0, the main emitted light of the LED is deflected and displaced upward by ΔH after being refracted by the transparent shell, and is emitted in the horizontal direction; when θ1=θ2, and θ3=0, the main emitted light of the LED is displaced upward by ΔH after being refracted by the transparent shell, and is emitted in the horizontal direction), thereby increasing the design margin (ΔH) of the road stud structure and making the shell structure of the road stud more compact, that is, lowering the height of the road stud exposed above the road surface when installed, reducing the bumping feeling of the vehicle and the bumping to the pedestrians and non-motor vehicle drivers, and also, under the premise of ensuring the visible distance of the road stud and within the size limit of the traffic regulations, increasing the thickness of the top shell, further increasing the structural strength and the compression and impact resistance of the road stud.

2. According to the refraction theorem n1sinα1=n2sinα2, the light refractive index n of the transparent material of the transparent shell, the inclination angle 1 (θ1) of the light incident surface (1b), the inclination angle 2 (θ2) of the light emitting surface (1a), the elevation angle (θ3) of the main light beam in the normal direction of the LED light emitting body (2) after being focused by the focusing lens, the thickness (H1) from the highest point of the top of the accommodating groove (1c) to the top surface of the transparent shell (1), the height (H2) of the light emitting surface (1a), the height (H3) of the light incident surface (1b), and the average width (W) between the light incident surface (1b) and the light emitting surface (1a) meet the condition that most of the light energy of the LED light emitting body is emitted horizontally (under the illumination condition of 20LUX to 30LUX, the LED When the luminous body emits light, people can still see the light spot in the LED light distribution structure in the horizontal direction, with a light spot diameter greater than or equal to the lamp bead diameter and less than or equal to H2, a relatively small aspect ratio or close to 1, a full and large area light spot, so the recognition is very high, while the conventional light emission structure that does not meet the light emission conditions of the present invention can only see a defective and small area light spot), so that the road stud has high horizontal light emission efficiency (that is, the light energy emitted by the road stud is mainly concentrated in the horizontal direction), thereby maximizing the visible distance of the light emission, which is beneficial to provide light guidance and instructions to motor vehicle drivers; the proportion of horizontal and upward emission can be allocated through a focusing lens, so that the light energy utilization rate of the two is higher and more targeted.

3. The top of the light outlet groove is arched (the cross section is similar to an inverted U shape), which is not only conducive to the injection molding process of the transparent shell, but also makes the LED light distribution structure of the light-emitting studs have higher structural strength, stronger pressure and impact resistance, and also makes the installation of the LED light-emitting body easier and the product consistency better.

The light-emitting road stud of the present invention further optimizes the structure and provides a design margin for the design.

The technical solution of the present invention is: as shown in Figures 1 to 4, an LED light distribution and emission structure, the LED light distribution and emission structure comprises a transparent shell (1), an LED light source (2) with a focusing lens (such as a focusing lens or a focusing reflector cup or a reflector tube, etc.), a separator (3), and an air layer (4).

The transparent shell (1) is a transparent shell with a local height difference, a certain thickness at the top, a plane or nearly plane at the top, and a downwardly opening accommodating cavity. The inner bottom surface (inner wall) at the top of the transparent shell (1) is provided with a recessed accommodating groove (1c) serving as a light outlet groove. The inner wall of the accommodating groove (1c) is provided at least at one end thereof with a certain height (H3) (corresponding to a certain inclined width, the height of which is greater than or equal to the radial dimension of the LED light-emitting body) and an inclination angle (θ1) for light to be incident. [The inclination angle in this article refers to the overall degree of inclination in a broad sense, including planes or non-planes (arcs, free-form surfaces, etc.). For example, the inclination angle of the arc surface is the inclination angle of the upper and lower edges or the left and right edges. The inclination angle of the plane where the light incident surface (1b) is located or the inclination angle of the arc surface and the plane where the intersection line is located, and the inclination angles of other surfaces are also similar] the light incident surface (1b) (also called the incident surface), the outer surface of the shell at the position corresponding to the light incident surface (1b) is a light emitting surface (1a) (also called the emitting surface) with a local height difference, which can be used for light emission, has a certain height (H2) and an inclination angle of two (θ2) (corresponding to a certain inclined width, whose height is greater than or equal to the radial dimension of the LED light-emitting body), and there is a sufficient average width W between the light incident surface (1b) and the light emitting surface (1a) [generally the median width, W is equal to or approximately equal to (W1+W2)/2], that is, the shell at the position has sufficient thickness to achieve the expected value of the upward deviation of the light beam;

The LED light-emitting body (2) is arranged in the accommodating groove (1c); after the LED light-emitting body (2) is focused by a focusing lens, the main light beam along the normal direction is at an elevation angle (θ3) and is incident on the light-entering surface (1b) at a certain incident angle; a partition (3) (preferably a partition layer, which may be provided with a packaging glue) is arranged around the LED light-emitting body (2), and an air layer (4) is formed at least between the LED light-emitting body (2) and the light-entering surface (1b), serving as a light-emitting groove; the LED light-emitting body (2) is encapsulated in the transparent shell (1) through the partition (3), so as to form a specific optical structure in which LED light-emitting parameters, light path transmission and optical structure parameters match each other and are combined with a forming structure to complete the light distribution design;

The optical structure is that the light emitted by the LED light-emitting body (2) is mainly concentrated by the focusing lens in the normal direction (i.e., the light-emitting axis), and the main light beam is refracted and incident from the light incident surface (1b) with an inclination angle of one (θ1) on the transparent shell (1) in the horizontal direction or at a small elevation angle (θ3) with respect to the horizontal direction for the first time, and then propagates through the side wall of the transparent shell (1) with a certain width W, and then refracted and emitted from the light exit surface (1a) with an inclination angle of two (θ2) on the transparent shell (1) for the second time; so as to achieve the upward displacement (ΔH) of the main light beam to generate the target value required by the design, and its normal direction The exit point of the main light beam falls on the middle height of the light exit surface (1a) to form a luminous center (light spot center), and is emitted in the horizontal direction, so as to achieve an LED light distribution structure with mainly horizontal emission (high proportion of horizontal emission light intensity), supplemented by upward (LED radial) emission (oblique upward emission can theoretically be decomposed into horizontal emission light and upward emission light), high overall emission efficiency of the emission light, and structural strength (pressure and impact resistance), structural height difference limit (protrusion height specification limit) and waterproof function and other required physical indicators.

Furthermore, from a structural perspective, the light incident surface (1b) is a beveled light incident surface (1ba) or a curved surface, spherical surface or free-form surface light incident surface (1bb), and the light emitting surface (1a) is a curved surface, spherical surface or free-form surface light emitting surface (1ab). The curved surface structure (similar to an arch structure) formed by the two can make the structure stronger or the accommodation space larger, and is more conducive to the shell's pressure resistance or the internal structure is more compact, and is more resistant to wheel rolling and impact, and long-term wear has little effect on the light emitting structure, and the product has higher durability.

Furthermore, from the perspective of the lateral (horizontal) luminous effect, the light incident surface (1b) is a beveled light incident surface (1ba) or a curved surface or a spherical surface or a free-form surface light incident surface (1bb), and the light exit surface (1a) is a curved surface or a spherical surface or a free-form surface light exit surface (1ab). The curvature of the light incident surface (1b) is smaller than the curvature of the light exit surface (1a), and the two form a shape with a light-gathering function, so that the two can form a shape with a light-gathering function, such as a convex lens with a flat interior and a convex exterior, and can also have a further light-gathering effect, so as to further improve the horizontal emission efficiency of light or increase the luminous viewing distance. The curved surface structure (similar to the arch structure) can make the structural strength better or the accommodation space larger, which is more conducive to the shell's pressure resistance or the internal structure is more compact, more resistant to wheel crushing and impact, and has little effect on the light emission structure due to long-term wear, and the product has higher durability.

Preferably, when the LED light emitting body (2) emits light, the main light beam in the normal direction intersects with the light emitting surface (1a) to form a light emitting center near the center point of the light emitting surface (1a) and emits in the horizontal direction, and the LED light emitting body (2) emits light in the horizontal direction to form a large area complete light spot on the light emitting surface (1a) with a diameter greater than or equal to the diameter (Φ) of the condenser lens of the LED light emitting body (2) and less than or equal to the height (H2) of the light emitting surface (1a), with an aspect ratio close to 1. Otherwise, when observed in the horizontal direction, the light spot deviates upward or downward, the light emission efficiency in the horizontal direction is low, and the light spot is defective when observed in the horizontal direction.

Preferably, the inclination angle (θ1) of the light incident surface (1b), the inclination angle (θ2) of the light exit surface (1a), the elevation angle (θ3) of the main light beam in the normal direction of the LED light emitting body (2) after being focused by the focusing lens, and the horizontal width (W) of the side wall at the middle of the light exit surface (1a) cause the main light beam of the LED light emitting body (2) to produce an upward displacement (ΔH), and the upward displacement (ΔH), the diameter (Φ) of the focusing lens of the LED light emitting body (2), the height (H2) of the light exit surface (1a), the distance between the LED light emitting body (2) and the receiving groove (110c) thereof, ) The spacing of the top walls (H4) satisfies: H1+H4+Φ/2-Φ/2≥ΔH≥H1+H4+Φ/2-H2+Φ/2, that is, H1+H4≥ΔH≥H1+H4+Φ-H2, preferably ΔH≈H1+H4+Φ/2-H2/2, or H2-Φ/2≥ΔH≥Φ/2; under the premise of controlling the height difference of the structure, that is, [the height of the light-emitting surface (H2)], the horizontal emission rate of light can be guaranteed to be high to increase the viewing distance, and a large area (relatively complete) strong light spot can be formed to improve the recognition.

Preferably, the transparent material of the transparent shell (1) is a PC material with a refractive index n approximately equal to 1.6.

Preferably, the inclination angle of the light incident surface (1b) of the transparent shell (1) [when the light incident surface (1b) is an inclined surface, that is, the angle with the reference surface (also called the reference surface, which is a horizontal plane or a reference plane parallel to the horizontal plane, which can be parallel to the top or bottom surface of the road stud or the road surface)] is an acute angle θ1, and the inclination angle of the light emitting surface (1a) is an acute angle θ2, which satisfies: 85°≥θ1≥θ2≥18° and 30°≥θ1-θ2≥0° (that is, the side wall of the light emitting portion is of equal thickness at the top and bottom or a structure that is narrow at the top and wide at the bottom), and the angle θ (=θ1-θ2) between the light incident surface (1b) and the light emitting surface (1a) satisfies: 30°≥θ≥0°, preferably 75°≥θ1≥30°, 60°≥θ2≥30°; calculated by the refraction theorem n1sinα1=n2sinα2 and optical simulation design and experimental verification, the above parameter conditions are relatively good, ensuring the light intensity ratio of the emitted light in the horizontal direction;

The elevation angle (θ3) of the main light beam in the normal direction of the LED light emitting body (2) after being focused by the focusing lens satisfies 30°≥θ3≥0°, and the light intensity half-value angle θ1 _/2 of the LED light emitting body (2) after being focused by the focusing lens satisfies 30°≥θ1 _/ 2≥5°, thereby ensuring the light intensity ratio of the emitted light in the horizontal direction.

Preferably, the elevation angle (θ3) of the main light beam in the normal direction of the LED light emitting body (2) after being focused by the focusing lens and the light intensity half-value angle θ _1/2 of the LED light emitting body (2) after passing through the focusing lens satisfy: θ _1/2 ≥θ3 ≥ 0°.

Preferably, the horizontal width W1 of the side wall at the most point of the light emitting surface (1a), the horizontal width W2 of the side wall at the most point of the light emitting surface (1a), and the thickness H1 from the highest point of the top of the accommodating groove (1c) to the top surface of the transparent shell (1) satisfy the following conditions: 15mm≥W2≥W1≥2H1≥6mm; the top of the accommodating groove is the thinnest part of the transparent shell and is the weak point of the structure, and the thickness of the top of the accommodating groove is ensured to be greater than or equal to 3mm to ensure the structural strength of the part; the distance between the LED light-emitting body (2) and the top wall of its accommodating groove (110c) is 1/5 of the diameter (Φ) of the lamp bead of the LED light-emitting body (2);

Alternatively, the diameter Φ of the LED light-emitting body (2), the height H2 of the light-emitting surface (1a), and the height (H3) of the light-entering surface (1b) satisfy the following conditions: 10mm≥H2≥Φ, 12mm≥H3≥Φ, 10mm≥Φ≥3mm; preferably, a straw hat lamp bead of Φ5 to Φ8 is used.

Preferably, the light-emitting surface (1a) of the transparent shell (1) is an inclined surface or a curved surface;

The main light beam in the normal direction of the emitted light of the LED light emitting body (2) is incident at a small elevation angle (θ3), 30°≥θ3≥0°, the inclination angle (θ1) of the light incident surface (1b) and the inclination angle (θ2) of the light emitting surface (1a) satisfy θ1≥θ2, and (θ1), (θ2) and the horizontal width of the side wall at the middle of the light emitting surface (1a) are matched to satisfy: after the main light beam in the normal direction of the LED light emitting body (2) is refracted by the light incident surface and/or the light emitting surface, it is displaced upward and emitted in the horizontal direction, corresponding to reference FIG3;

Or the inclination angle (θ1) of the light incident surface (1b), the inclination angle (θ2) of the light emitting surface (1a), the elevation angle (θ3) of the main light beam in the normal direction of the emitted light of the LED light emitting body (2), and the refractive index n of the transparent shell (1) satisfy:

sin(90°-θ1-θ3)=n·sinγ

n·sin(γ+θ1-θ2)=sin(90°-θ2), where γ is the refraction angle on the incident surface;

Solving the equation yields:

n ² ·sin ² (θ1-θ2)=cos ² (θ1+θ3)+cos ² θ2-2·cosθ2·cos(θ1+θ3)·cos(

θ1-θ2),

That is, θ2=arc tan{[n·sin（arc sin(cos（θ1+θ3）/n)+θ1）-1]/[n·cos(arc sin(cos(θ1+θ3）/n)+θ1)]}, so that the light from the LED is refracted and displaced upward and emitted in the horizontal direction;

This technical solution can not only ensure high horizontal emission efficiency, but also take into account the upward luminous effect. The ratio of horizontal and upward light intensity can be accurately allocated by the elevation angle (θ3) of the main light beam in the normal direction of the LED emission light.

Furthermore, the light-emitting surface (1a) can also be a curved surface with an inclination angle (θ2) to further improve the focusing degree of the emitted light.

Preferably, the light-emitting surface (1a) of the transparent shell (1) is an inclined surface or a curved surface;

The main light beam in the normal direction of the emitted light of the LED light emitting body (2) is vertically incident along the light incident surface (1b), and after being refracted and deflected by the light emitting surface (1a), it is displaced upward and emitted in the horizontal direction, corresponding to reference FIG4:

Or the inclination angle (θ1) of the light incident surface (1b), the inclination angle (θ2) of the light emitting surface (1a), the elevation angle (θ3) of the main light beam in the normal direction of the emitted light of the LED light emitting body (2), and the refractive index n of the transparent shell (1) satisfy:

30°≥θ3＞7.5°, θ1=90°-θ3 (i.e. the LED luminous body is incident vertically into the light surface),

cosθ2·(n·cosθ3-1)=n·sinθ2·sinθ3, that is:

θ2=arc tan[(cosθ3-1/n)/sinθ3], so that the incident light is vertically incident on the light-entering surface, and then refracted and deflected by the light-emitting surface to produce an upward displacement and emit in the horizontal direction;

This technical solution can not only ensure high horizontal emission efficiency, but also take into account the upward luminous effect. The ratio of horizontal and upward light intensity can be accurately allocated by the elevation angle (θ3) of the main light beam in the normal direction of the LED emission light.

Furthermore, the light-emitting surface may also be a curved surface with an inclination angle θ2, forming a plano-convex lens effect with the light-incident surface to further improve the focusing degree of the emitted light.

This solution uses direct radiation to enter the light incident surface, which can ensure a high light output ratio. The main light beam in the normal direction of the LED is emitted obliquely upward and deflected upward. After refraction, it is deflected downward on the output surface and emitted as horizontally as possible.

Preferably, the light-emitting surface (1a) of the transparent shell (1) is an inclined surface or a curved surface;

The main light beam in the normal direction of the LED is incident in the horizontal direction, and after being refracted by the light-entry and light-exit surfaces with the same inclination angle, it produces an upward displacement (ΔH) and is emitted in the horizontal direction, corresponding to reference Figure 5:

Or the inclination angle (θ1) of the light incident surface (1b), the inclination angle (θ2) of the light emitting surface (1a), and the elevation angle (θ3) of the main light beam in the normal direction of the emitted light of the LED light emitting body (2) satisfy:

θ3=0° (i.e., the LED luminous body is horizontally projected), 60°≥θ1=θ2≥30° (i.e., the light incident surface is parallel to the light emitting surface), so that the incident light is horizontally incident on the light incident surface, and after being refracted and deflected by the light emitting surface, it produces an upward displacement (ΔH) and is emitted in the horizontal direction;

The upward displacement of the light beam ΔH=W1·sinθ1·cosθ1·[1-sinθ1/(n ² -cos ² θ1) ^1/2 ], wherein n is the refractive index of the transparent material of the transparent shell (1), W1 is the horizontal width of the side wall between the light incident surface and the light emitting surface, and the upward displacement (ΔH), the diameter (Φ) of the focusing lens of the LED light emitting body (2), the height (H2) of the light emitting surface (1a), and the distance (H4) between the LED light emitting body (2) and the top wall of the accommodating groove (110c) thereof satisfy: H2-Φ/2≥ΔH≥Φ/2, or ΔH≈H1+H4+Φ/2-H2/2.

The upward displacement of the light beam can be controlled by adjusting the horizontal width of the side wall where the light entrance surface and the light exit surface are located; the light exit surface (1a) can also further improve the focusing degree of the exiting light by means of an arc surface with an inclination angle (θ2); this solution is the easiest to implement and the operation is more convenient.

Preferably, the light emitting surface (1a) is a curved surface, which can make the diffusion angle of the emitted light smaller, the concentration in the horizontal direction higher, and the viewing distance longer. The ratio of the arc height (also called sagittal height) to the arc (arch) span (sagittal span ratio) is between 1:12 and 1:4.

Furthermore, the ratio of the light intensity of the LED light emitter (2) emitted from the outer surface of the transparent shell (1) in the horizontal direction to that in the upward direction is between 3:1 and 12:1. This is most conducive to the luminous induction of motor vehicle drivers and pedestrians under different lighting conditions, and is more adaptable to the current diversified road requirements. The lighting conditions and vehicle speed designs of different roads, such as first-class highways, second-class highways, third-class highways, expressways, and urban roads are different. On expressways, the vehicle speed is fast, the horizontal luminous intensity should account for a larger proportion and the viewing distance is far. On urban roads, there is a lot of stray light and the vehicle speed is slow, so the horizontal luminous intensity should account for a relatively small proportion.

Furthermore, the transparent shell (1) is an injection-molded shell, preferably an injection-molded shell that is easy to mold by lower draft; preferably, the thinnest part of its body wall is controlled to be greater than or equal to 3 mm, and the thickest part is controlled to be less than or equal to 15 mm, thereby ensuring the overall structural strength and facilitating injection molding.

Furthermore, a notch (1d) is provided in the thicker part between the light-entering surface (1b) and the light-emitting surface (1a), and a transparent light-guiding adhesive having a refractive index close to that of the shell material is provided in the notch (1d). Since the injection molding process may cause local deformation or blistering when the injection-molded shell is too thick, a notch (1d) can be provided in the thicker part between the light-entering surface and the light-emitting surface, and a transparent light-guiding adhesive having a refractive index close to that of the shell material is provided in the notch (1d), and after solidification, the notch (1d) is integrated with the transparent shell, and the solidified light-guiding adhesive plays a role of filling the notch, and accordingly has a light transmission effect equal to or close to that of the entire transparent shell.

Furthermore, the accommodating groove (1c) is an open accommodating groove whose cross section along the light emitting direction is in an inverted U shape (with an arched top) or a downwardly open trapezoid, or is a accommodating groove whose longitudinal section along the light emitting direction is in a downwardly open trapezoid, or is an array-type accommodating groove composed of a plurality of accommodating groove units whose cross sections along the light emitting direction are in an inverted U shape or a downwardly open trapezoid, or is an array-type accommodating groove composed of a plurality of accommodating groove units whose longitudinal sections along the light emitting direction are in a downwardly open trapezoid.

Furthermore, a single LED light-emitting body is arranged in a narrower (2Φ＞slot width≥Φ) accommodating groove (1c), or an LED light-emitting body in which two or more LED light-emitting units are arranged in an array is arranged in a wider (slot width≥2Φ) accommodating groove (1c), wherein (Φ) is the diameter (Φ) of the focusing lens of the LED light-emitting body (2) or the diameter of the lamp bead.

Furthermore, a transparent partition is provided in the wider (the width of the accommodation groove is ≥ 2Φ) accommodation groove to play a role in structural reinforcement and partitioning, wherein (Φ) is the diameter (Φ) of the focusing lens of the LED light-emitting body (2) or the diameter of the lamp bead.

Furthermore, the focusing lens of the LED illuminant (2) is a primary focusing lens integrally packaged with the LED or a secondary focusing lens that is secondary assembled.

Furthermore, the LED illuminant (2) is a pin-type upright packaged LED columnar lamp bead with a primary focusing lens on the top, or a SMD LED with a focusing lens. Preferably, the straw hat lamp bead has a primary lens with a focusing function.

Furthermore, a reflective layer (6) for reflecting upwards is provided below the LED light-emitting body (2), and the reflective layer (6) is a white printed layer or a coated reflective sheet on a circuit board (the light emitted radially downward by the LED is reflected upwards, so as to facilitate the emission of light from the transparent top shell and increase the upward emission light effect); or a light diffusion layer is provided above the LED light-emitting body (2) (the upward emission is relatively non-glaring, so as to facilitate the visual comfort of pedestrians); or a long afterglow light-emitting layer is provided above the LED light-emitting body (2), so as to have an afterglow light-emitting function and can also act as a light diffusion layer.

Furthermore, a long afterglow luminous body capable of being excited by LED light is provided on the inner wall of the transparent shell (1); or a long afterglow luminous body capable of being excited by LED light is provided in the receiving groove of the transparent shell (1); or a long afterglow luminous body capable of being excited by LED light is provided on the LED luminous body (2); thus forming an LED light distribution and emission structure having a long afterglow luminous function.

Furthermore, the LED light emitting body (2) and other accessories are encapsulated in a transparent shell (1) to form a light emitting road stud, or the LED light emitting body (2) is encapsulated in a transparent shell (1) to form a light emitting inner shell with an LED light distribution and emission structure, and the light emitting inner shell and the protective shell (5) are combined by encapsulating glue or fasteners to form a light emitting road stud in which the light emitting inner shell is partially surrounded by the protective shell (5) and the top portion of the transparent shell (1) is partially exposed; wherein the LED light distribution and emission structure is symmetrically arranged at the front and rear side portions of the top of the road stud, and the said portions are structures with the main light emission direction of the emitted light being bidirectionally emitted in the forward direction and the reverse direction, respectively, or is arranged at the front side portion of the top of the road stud, and the said portion is structures with the main light emission direction of the emitted light being unidirectionally emitted in the forward direction; or wherein the LED light distribution and emission structure is symmetrically arranged at the left and right side portions of the top of the road stud, and the said portions are structures with the main light emission direction of the emitted light being bidirectionally emitted in the forward direction and the reverse direction, respectively, or is arranged at the left and right side portions of the top of the road stud, and the said portions are structures with the main light emission direction of the emitted light being unidirectionally emitted in the forward direction.

Furthermore, a long afterglow luminous body which can be excited by LED light is also arranged in the receiving groove of the transparent shell (1), thereby forming a luminous road stud having a long afterglow luminous function.

Furthermore, a solar photovoltaic component is provided in the accommodation cavity between the front and rear LED light distribution and emission structures of the transparent shell (1), and the solar photovoltaic component is connected to the control circuit, and the control circuit is also connected to the LED light emitter (2) and the energy storage element through circuits respectively;

The solar photovoltaic assembly, LED light emitter (2), control circuit and energy storage element are packaged in a transparent shell (1) by packaging glue or fasteners to form a solar light-emitting road stud;

Alternatively, the solar photovoltaic assembly, LED light emitter (2), control circuit and energy storage element are encapsulated in a transparent shell (1) by encapsulating glue or fasteners to form a light-emitting inner shell with an LED light distribution structure, and the light-emitting inner shell and the protective shell (5) are combined by encapsulating glue or fasteners to form a solar light-emitting road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top portion of the transparent shell (1) is exposed.

Furthermore, the LED light-emitting body (2) is electrically connected to the outside via an external wire; the LED light-emitting body (2) and other accessories are encapsulated in a transparent shell (1) via encapsulation glue or fasteners to form an active light-emitting road stud; or the LED light-emitting body (2) and other accessories are encapsulated in a transparent shell (1) via encapsulation glue or fasteners to form a light-emitting inner shell with an LED light distribution structure, and the light-emitting inner shell and the protective shell (5) are combined via encapsulation glue or fasteners to form an active light-emitting road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top portion of the transparent shell (1) is exposed.

Alternatively, a long afterglow luminous body that can be excited by LED light is also provided in the receiving groove of the transparent shell (1), and the LED luminous body (2) is electrically connected to the outside via an external wire; the LED luminous body (2), the long afterglow luminous body and other accessories are encapsulated in the transparent shell (1) via encapsulation glue or fasteners to form an active light-emitting road stud with a long afterglow luminous function; or the LED luminous body (2), the long afterglow luminous body and other accessories are encapsulated in the transparent shell (1) via encapsulation glue or fasteners to form a light-emitting inner shell with an LED light distribution structure and a long afterglow luminous function, and the light-emitting inner shell and the protective shell (5) are combined via encapsulation glue or fasteners to form an active light-emitting road stud with a long afterglow luminous function, in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top portion of the transparent shell (1) is exposed.

Furthermore, a metal protective pressure cover is provided above the LED light distribution and emission structure, or a protective body is provided around the LED light distribution and emission structure, which further protects the transparent shell (1) and increases the overall pressure and impact resistance of the LED light distribution and emission structure and the road stud.

Furthermore, a retroreflector is provided on the transparent shell (1) or the protective shell (5) to form a luminous reflective road stud.

Furthermore, the transparent shell (1) is a transparent shell with forward and backward opposite inclined surfaces, symmetrical in front and back and left and right, and with a generally rectangular top. The solar photovoltaic component is arranged below the middle part of the top shell of the transparent shell (1); the left and right sides of the solar photovoltaic component are symmetrically provided with mounting grooves with an inverted U-shaped cross section, and the LED light emitter (2) is arranged below the reflective surface (1a) of the mounting groove with an inverted U-shaped cross section, forming an LED light distribution structure in which the main light emission direction of the emitted light is along the forward direction of the road stud, or along the forward and backward directions of the road stud; the forward and backward inclined surfaces of the transparent shell (1) are also provided with retroreflectors, and the accommodating cavity of the transparent shell (1) is also provided with a control circuit and an energy storage element, and the solar photovoltaic component, The LED light emitter (2) and the energy storage element are respectively connected to the control circuit via lines; the solar photovoltaic assembly, the LED light emitter (2), the control circuit and the energy storage element are encapsulated in a transparent shell (1) via encapsulation glue or fasteners to form a raised solar light-emitting reflective road stud; or the solar photovoltaic assembly, the LED light emitter (2), the control circuit and the energy storage element are encapsulated in a transparent shell (1) via encapsulation glue or fasteners to form a light-emitting inner shell with an LED light distribution structure; the light-emitting inner shell and the protective shell (5) with a slope on the side are combined via encapsulation glue or fasteners to form a raised solar light-emitting reflective road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top portion of the transparent shell (1) is exposed.

Furthermore, the transparent shell (1) is a light-emitting liner shell with a raised top, and the forward and backward sides of the raised top are provided with forward and backward opposite inclined surfaces, and the solar photovoltaic component is arranged below the middle part of the top shell of the light-emitting liner shell; the front and rear sides of the solar photovoltaic component are provided with a placement groove with a cross section in the shape of an inverted U and facing the forward and backward inclined surfaces, and the LED light-emitting body (2) is a plurality of LEDs arranged in a linear array and arranged below the reflective surface (1a) of the placement groove with a cross section in the shape of an inverted U, so as to form an LED light distribution emission structure in which the main emission direction of the emitted light is along the forward direction of the road stud, or along the forward direction and backward direction of the road stud; the transparent shell (1) is provided with a plurality of LEDs arranged in a linear array and arranged below the reflective surface (1a) of the placement groove with a cross section in the shape of an inverted U, so as to form an LED light distribution emission structure in which the main emission direction of the emitted light is along the forward direction of the road stud, or along the forward direction and backward direction of the road stud; A control circuit and an energy storage element are also provided in the accommodating cavity. The solar photovoltaic component, the LED light emitter (2) and the energy storage element are respectively connected to the control circuit via lines. The solar photovoltaic component, the LED light emitter (2), the control circuit and the energy storage element are encapsulated in the transparent shell (1) by encapsulating glue to form a light-emitting inner shell with an LED light distribution structure. The protective shell (5) is composed of a metal bottom shell with an upwardly opened cavity and a top cover with an opening in the middle. The light-emitting inner shell is locked in the protective shell (5) and combined by encapsulating glue or fasteners to form an underground solar light-emitting road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5).

Furthermore, the transparent shell (1) is a light-emitting liner shell with a raised top, and the forward and backward sides of the raised top are provided with forward and backward opposite inclined surfaces; the front and rear sides below the top shell of the light-emitting liner shell are provided with a placement groove with a cross section in the shape of an inverted U and facing the forward and backward inclined surfaces; the LED light-emitting body (2) is a plurality of LEDs arranged in a linear array and arranged below the reflective surface (1a) of the placement groove with a cross section in the shape of an inverted U, forming an LED light distribution emission structure in which the main emission direction of the emitted light is along the forward direction of the road stud, or along the forward direction and backward direction of the road stud; The LED light-emitting body (2) is electrically connected to the outside through an external wire; the LED light-emitting body (2) and other accessories are encapsulated in the transparent shell (1) through encapsulation glue or fasteners to form a light-emitting inner shell with an LED light distribution structure; the protective shell (5) is composed of a metal bottom shell with an upwardly opened cavity and a top cover with an opening in the middle; the light-emitting inner shell is locked in the protective shell (5) and combined through encapsulation glue or fasteners to form an underground active light-emitting road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top portion of the transparent shell (1) is exposed.

Furthermore, the transparent shell (1) is a transparent shell with a symmetrical wide cross-shaped top. The LED light-emitting body (2) and other accessories are packaged in the transparent shell (1) by packaging glue or fasteners to form a light-emitting inner shell with LED light distribution emission structures on the left and right sides, and the main emission direction of the emitted light is forward and backward. The protective shell (5) is composed of a metal bottom shell with an upward cavity and a symmetrical top cover with an upward convex protective body and a wide cross-shaped opening in the middle. The light-emitting inner shell is locked in the protective shell (5) and combined by packaging glue or fasteners to form a solar light-emitting road stud or active light-emitting road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top of the transparent shell (1) is partially exposed.

Transparent shell (1):

The transparent shell (1) is a shell with at least a transparent top shell and a housing cavity with a downward opening, and mainly serves the functions of housing, supporting, and transmitting light. Generally, transparent PC, transparent acrylic, or glass is selected; it can serve as a transparent road stud shell as a whole, or as a combined shell that is combined with a protective shell (5) to form a road stud.

LED light source (2):

The LED light source (2) is a single or multiple LED light sources with a focusing lens, preferably a straw hat lamp bead with a primary lens having a focusing function (such as Φ5, Φ6 straw hat lamp bead, etc.); a secondary lens can also be used for focusing to achieve the proportion distribution of light intensity in the horizontal direction and light intensity in the upward direction; the light color can be selected as red, yellow, green, etc., or a combination of two or more light colors as needed.

Separator (3):

The separator (3) mainly serves to separate, support, support, contain, fix, and reinforce the dustproof or waterproof air layer. It can be made of plastic, metal, or composite material plates or special-shaped plates, preferably injection molded parts, and can be provided with encapsulation glue. The simplest one can be a circuit board layer.

The separator (3) forms an air layer (4) between the transparent shell (1) and the separator (3) through a limiting structure (e.g., an inner step body stop) inside the transparent shell (1); an LED light emitting body (2) or an electrical component such as a circuit board can be arranged on the separator (3), which acts as a partition when the glue is poured, and can also play a role in strengthening the structure. The separator (3) can also be provided with a bracket, a support, or a rib to play a reinforcing role.

Air layer (4):

An air layer (4) is provided between the separator (3) and the inner wall of the transparent shell (1), serving as a light emitting groove to meet the light focusing effect and light emission conditions.

Protective case (5):

The protective shell (5) mainly plays the role of supporting, containing, fixing, installing, protecting, and transmitting light. The protective shell (5) and the transparent shell (1) can be combined into a road spike shell by means of structural adhesive or fasteners. The protective shell (5) can be a single piece or a combination (such as a combination of a bottom shell and a top cover), and the top cover can cover the top of the transparent shell (1), especially the top of the LED light distribution structure, to improve the compressive strength. It is made of metal, ceramic, plastic, glass, or composite materials, preferably cast aluminum, forged aluminum, alloy steel, or aluminum alloy.

Reflective layer (6):

The reflective layer (6) is a white printed layer or a coated reflective sheet on the circuit board, and the radially downward light emitted by the LED is reflected upward, so as to facilitate the light to be emitted from the transparent top shell and increase the upward light emission effect.

The main advantages of the present invention are:

1. The LED light distribution and emission structure with optical path design and luminescence matching and the light-emitting road stud containing the same of the present invention have greatly improved lateral (horizontal) luminous performance and overall light emission efficiency compared with the LED light distribution and emission structure without optical path design and luminescence matching and the light-emitting road stud containing the same, achieving an unexpected light distribution and emission effect.

2. Compared with the conventional flat-emission road stud with a perforated side shell, the LED light distribution and emission structure of the present invention has good long-range luminous effect, and part of the light energy directed upward or to the side is transmitted from the top surface of the shell, thereby increasing the luminous area, which is beneficial to pedestrians. The overall light energy utilization rate is high, and the different needs of people and vehicles can be taken into account. The design margin (ΔH) of the road stud structure can be increased, and the shell structure of the road stud can be made more compact, that is, the height of the road stud exposed to the road surface can be reduced when the road stud is installed, so as to reduce the bumping feeling of the vehicle and the collision to pedestrians and non-motor vehicle drivers. Under the premise of ensuring the visible distance of the road stud and within the size limit of the traffic regulations, the structural strength and the pressure and impact resistance of the road stud can be further increased by increasing the thickness of the top shell.

3. Compared with the conventional inverted V-shaped light emitting groove structure, the LED light distribution structure and the light-emitting road stud with the structure designed with light path and light emission matching of the present invention have more reasonable light energy distribution, and the light energy is mainly concentrated in the horizontal direction, thereby maximizing the visible distance of light emission, which is beneficial to provide light guidance and instructions to motor vehicle drivers, and has less light interference and glare to pedestrians or non-motor vehicle drivers. The overall light energy utilization rate in the horizontal direction is high.

4. Compared with the conventionally used inverted V-shaped light-emitting groove structure, the light-emitting road stud with the arched light-emitting groove structure of the present invention has a higher structural strength at the top (especially the highest point of the top wall of the light-emitting groove), and has stronger compression and impact resistance.

5. Compared with the commonly used perforated flat-emitting road studs, the luminous road stud with an arched light-emitting groove structure of the present invention has a simpler process, a higher structural strength of the luminous part, and is less susceptible to water ingress. Compared with the commonly used inverted V-shaped light-emitting groove structure of the existing luminous road studs, it is more conducive to the injection molding process of the transparent shell.

6. The LED light distribution structure with optical path design and luminescence matching of the present invention is particularly suitable for luminous equipment represented by luminous road studs. It can be used for raised road studs, buried road studs, luminous contour marks, etc. It has a wider range of applications and better luminous effects. Compared with the existing technology, this technology can improve quality and efficiency, and the comprehensive performance has been greatly improved. It can improve traffic safety efficiency and reduce traffic safety accidents. It has very high application value and social benefits. Compared with the existing similar products that make up for their defects by increasing power, it has higher economic value.

Description of the drawings (for the convenience of explanation, the embodiments of the present invention mainly take a typical case of an upright packaged LED with θ1=θ2, i.e., the inner and outer inclined surfaces are parallel to each other and have a primary focusing lens, and an LED light distribution structure with θ3=0°, i.e., a horizontal emission mode, and a typical case of a light-emitting road stud as an example)

FIG1 is a schematic diagram of a longitudinal cross-sectional structure of the present invention along the light emitting direction;

FIG2 is a schematic diagram of the cross-sectional structure of the present invention along the light emitting direction;

FIG3 is a schematic diagram of the light-emitting principle of the LED light-emitting body (2) according to the present invention, in which the main light beam in the normal direction is refracted by the light-entry surface and the light-emitting surface to generate an upward displacement (ΔH) and is emitted in the horizontal direction, and a schematic diagram of the arc surface of the light-emitting surface;

FIG4 is a schematic diagram of the light emitting principle and the arc surface of the LED according to the present invention, in which the main light beam in the normal direction of the LED is vertically incident along the light incident surface (1b), is refracted by the light emitting surface (1a), produces an upward displacement (ΔH), and is deflected downward to be emitted in the horizontal direction;

5 is a schematic diagram of the light emitting principle and the arc surface of the light emitting surface of the present invention, in which the main light beam in the normal direction of the LED is incident in the horizontal direction, refracted by the light incident surface and the light emitting surface with the same inclination angle, produces an upward displacement (ΔH) and is emitted in the horizontal direction;

FIG6 is a schematic diagram of the light intensity distribution of the LED luminous body after passing through a focusing lens of the present invention;

FIG7 is a schematic diagram of the longitudinal cross-sectional structure of the solar luminous reflective convex road stud according to the first embodiment of the present invention along the light emitting direction;

FIG8 is a schematic diagram of the split explosion structure of the solar luminous reflective raised road stud according to the first embodiment of the present invention;

FIG9 is a schematic diagram of the three-dimensional structure of the solar luminous reflective protruding road stud according to the first embodiment of the present invention;

FIG10 is a schematic top perspective structural diagram of a solar luminous reflective raised road stud according to Embodiment 1 of the present invention;

FIG11 is a perspective view of a transparent shell of a solar-powered luminous reflective raised road stud according to the first embodiment of the present invention;

FIG12 is a bottom view of the transparent shell of the solar luminous reflective raised road stud according to the first embodiment of the present invention;

13 and 14 are comparison diagrams of experimental test values of horizontal light intensity of the LED light distribution and emission structure of the first embodiment of the present invention (FIG. 13) and the existing inverted V-shaped LED light distribution and emission structure (FIG. 14) under the same preconditions (within the allowable error range);

FIG15 is a field diagram of horizontal light intensity testing of the LED light distribution and emission structure of the first embodiment of the present invention and the existing inverted V-shaped LED light distribution and emission structure under the same preconditions (within the allowable error range);

FIG16 is a schematic diagram of the split explosion structure of the solar luminous reflective raised road stud according to the second embodiment of the present invention;

FIG17 is a schematic top perspective structural diagram of a solar luminous reflective raised road stud according to Embodiment 2 of the present invention;

FIG18 is a schematic diagram of the three-dimensional structure of a solar-powered luminous reflective protruding road stud according to the second embodiment of the present invention;

FIG19 is a bottom view of a transparent shell of a solar-powered luminous reflective raised road stud according to Embodiment 2 of the present invention;

FIG20 is a schematic diagram of the split explosion structure of the underground solar luminous road stud according to the third embodiment of the present invention;

FIG21 is a schematic diagram of the three-dimensional structure of an underground solar-powered light-emitting road stud according to Embodiment 3 of the present invention;

FIG22 is a schematic diagram of a top perspective structure of an underground solar-powered light-emitting road stud according to Embodiment 3 of the present invention;

FIG23 is a flipped stereoscopic view of the transparent shell of the underground solar-powered light-emitting road stud according to the third embodiment of the present invention;

FIG24 is a schematic diagram of the three-dimensional structure of an underground active light-emitting road stud according to a fourth embodiment of the present invention;

FIG25 is a schematic diagram of a top perspective structure of an underground active light-emitting road stud according to a fourth embodiment of the present invention;

FIG26 is a flipped stereoscopic view of the transparent shell of the buried active light-emitting road stud according to the fourth embodiment of the present invention;

FIG27 is a cross-sectional structural diagram of an underground active light-emitting road stud according to a fifth embodiment of the present invention along the light emitting direction;

FIG28 is a schematic diagram of the split explosion structure of the underground active light-emitting road stud according to the fifth embodiment of the present invention;

FIG29 is a schematic diagram of the three-dimensional structure of an underground active light-emitting road stud according to Embodiment 5 of the present invention;

FIG30 is a schematic diagram of a top perspective structure of an underground active light-emitting road stud according to a fifth embodiment of the present invention;

FIG31 is a perspective view of a transparent shell of an underground active light-emitting road stud according to a fifth embodiment of the present invention;

FIG32 is a cross-sectional three-dimensional structural diagram of the underground active light-emitting road stud according to the sixth embodiment of the present invention along the light emitting direction;

FIG33 is a schematic diagram of the split explosion structure of the underground active light-emitting road stud according to the sixth embodiment of the present invention;

FIG34 is a schematic diagram of the three-dimensional structure of an underground active light-emitting road stud according to a sixth embodiment of the present invention;

FIG. 35 is a schematic diagram of a top perspective structure of an underground active light-emitting road stud according to a sixth embodiment of the present invention.

Detailed ways

Embodiments of the present invention are described with reference to the accompanying drawings.

Embodiment 1

A solar luminous reflective raised road stud comprises a transparent shell (110), an LED straw hat lamp bead (120), a separator (130), an air layer (140), a containing cavity (150), a bottom shell (160), a retroreflector (170), a photovoltaic module (180), a control circuit (190), and an energy storage element (1100), as shown in FIGS. 7-15.

Transparent shell 1 (110):

The transparent shell 1 (110) is an injection molded part made of transparent PC by injection molding, similar to a rectangular parallelepiped, with a downward opening cavity. The four corners of the top are concave downward to form two groups of positive and reverse inclined surfaces with a height difference of 6mm and a thickness of 10mm. The outer inclined surface 1 (110a) and the inner inclined surface 1 (110b) of the inclined surface are parallel to each other and form an angle of 45° with the top surface. A receiving groove 1 (110c) with an arched top (cross section similar to an inverted U shape) and a width (inner diameter) of 6mm is provided between each group of inner inclined surfaces 1 (110b). The axial direction of the receiving groove 1 (110c) faces the direction of the inner inclined surface 1 (110b). The top of the receiving groove 1 (110c) of the transparent shell 1 (110) is 3.2mm away from the top surface of the transparent shell 1 (110). A receiving groove with a downward open trapezoidal shape in longitudinal section or cross section can also be selected.

LED straw hat lamp bead one (120):

The LED straw hat lamp bead 1 (120) is a F5 type straw hat lamp bead with a diameter of Φ=5mm, which is welded on the circuit board. The metal pin is bent 90 degrees so that the light axis direction is parallel to the circuit board. The circuit board welded with the LED straw hat lamp bead 1 (120) is set in the accommodating groove 1 (110c) through a limiting structure, so that the distance between the F5 type straw hat lamp bead and the top wall of the accommodating groove 1 (110c) is 0.5mm. The main light emission direction of the straw hat lamp bead is parallel to the bottom surface of the road stud and faces the corresponding inner inclined surface 1 (110b). The half-value angle after passing through the built-in primary lens is 10°.

The circuit board below the F5 straw hat lamp bead is coated with a white coating to increase the effect of the LED reflecting light upward. An aluminum-plated reflective film can also be provided on the circuit board below the F5 straw hat lamp bead to increase the effect of the upward reflective light.

A light-guiding glue mixed with long afterglow powder can also be cured in the receiving groove 1 (110c) above the F5-type straw hat lamp bead, which can achieve both the effect of light diffusion and the effect of long afterglow luminescence.

Separator 1 (130):

The separator 1 (130) is played by the circuit board with threading holes mentioned above, and is fixed under the top shell of the transparent shell 1 (110) through a limiting structure and bonding, and forms a sealed air layer 1 (140) between the accommodating groove 1 (110c), which acts as a light output groove.

A single chip microcomputer control circuit serving as control circuit one (190) is also soldered onto the circuit board.

The LED light distribution and emission structure formed by combining the above elements becomes a partial structure of the road stud.

Accommodating cavity 1 (150):

A recessed square housing cavity (150) is provided on the inner bottom surface of the top shell of the transparent shell (110).

Bottom shell 1 (160):

The bottom shell 1 (160) is a cast aluminum protective shell with a 24.5 mm high housing cavity with an upward opening. Its shape is similar to a table. The front and rear sides are respectively provided with opposite inclined surfaces with a convex groove at an angle of 30° to the bottom surface. The left and right sides of the upper part of the inclined surface are provided with two depressions with a downward angle of 6 mm corresponding to the inclined light-emitting portion of the transparent shell 1 (110). The bottom of the depression is 18.5 mm high from the bottom surface.

Retroreflector 1 (170):

The retroreflector 1 (170) is a reflective lattice plate made of transparent PMMA resin by injection molding, and is fixed to the convex grooves on the front and rear sides of the shell bottom shell 1 (160) by structural adhesive.

Photovoltaic module 1 (180):

Photovoltaic module one (180) is a rectangular monocrystalline silicon solar cell panel, which is embedded from the bottom opening of transparent shell one (110) into a square cavity one (150) below the top shell of transparent shell one (110) and fixed with light-conducting glue.

First, the reflective lattice plate is fixed to the convex grooves on the front and rear sides of the bottom shell (160) through structural adhesive, and then the transparent shell (110) is inverted, and the photovoltaic module (180) and the circuit board are fixed in sequence, and then the wires are connected from the threading holes of the circuit board to the lithium battery serving as the energy storage element (1100), and then the circuit board and the inner wall of the transparent shell (110) are pre-sealed with silicone glue or hot melt glue, and epoxy resin is poured into the bottom opening of the transparent shell (110) until it is aligned with the bottom opening of the transparent shell (110). The bottom surface is flushed and solidified to obtain a luminous inner shell, and the luminous inner shell is embedded into the top opening of the bottom shell (160) according to the required tolerance range. At this time, the outer inclined surface (110a) is opposite to the depression on the side of the bottom shell (160). Finally, the package is fixed with structural adhesive or fasteners to form a luminous inner shell surrounded by the metal bottom shell (160), with a total height of 24.5 mm and high structural strength. The LED light distribution emission structure is symmetrically located on the left and right sides of the top of the road stud.

The solar luminous reflective raised road stud of the present invention is fixed on the road surface by screws and adhesive during installation. The front and rear sides of the road stud face the main direction of road vehicle travel. The light emitted by the F5 straw hat lamp bead is first focused by a lens, and then, after secondary refraction by the inner and outer walls, it is displaced upward by ΔH≈3.6mm and emitted horizontally in the main direction of road vehicle travel. It can emit stroboscopic light or constant light with a certain period and duty cycle, and has the advantages of high proportion of horizontal emission light intensity, longer viewing distance, and good lighting effect for motor vehicle drivers. [The LED light distribution emission structure of the present invention and the existing inverted V-shaped LED light distribution emission structure are compared with the LFA-3000 light source stroboscope measuring instrument of Yuanfang Optoelectronics. The measured data under the same preconditions (within the allowable error range) are compared. The horizontal light intensity (maximum value) of the two when powered on is one order of magnitude different; the inverted V-shaped LED light distribution structure uses LEDs with large half-value angles, and even the LED is tilted outward, and the horizontal light intensity of the two is more than 3 times different. It has strong compression and impact resistance (compression strength can reach 20 tons, which is much higher than the 10-ton standard required by the national standard), and can clearly see bright spots with a diameter of about 5mm. Therefore, it has the advantages of high recognition, high structural strength, and easier control of the light-emitting angle. The overall emission utilization rate of its LED light has been greatly improved compared with the overall emission utilization rate of the traditional perforated direct emission structure. In addition, LED straw hat lamp beads with different focusing effects can be selected, such as LED lamp beads with a half-value angle of 5° to 15°, which can be used on highways, or lamp beads with a half-value angle of 25° to 45°, which can be used on urban roads to meet different needs.

Embodiment 2

A solar luminous reflective raised road stud comprises a transparent shell (210), an LED straw hat lamp bead (220), a separator (230), an air layer (240), a retroreflector (270), a photovoltaic module (280), a control circuit (290), and an energy storage element (2100), as shown in FIGS. 16-19.

Transparent shell 2 (210):

The transparent shell 2 (210) is an injection molded part made of transparent PC by injection molding process, with a downward opening cavity. Its shape is similar to a table body, and the front and rear sides are respectively provided with relative inclined surfaces that intersect the bottom surface at an angle of 30° and each with a convex groove, and the left and right sides are convex outward in an arc shape and each with a mounting circular hole, and the four corners of the top are concave downward to form two groups of positive and reverse relative inclined surfaces with a height difference of 6mm and a thickness of 9mm, and the outer inclined surface 2 (210a) and the inner inclined surface 2 (210b) of the inclined surface are parallel to each other and form an angle of 45° with the top surface, and a receiving groove 2 (210c) with a top arched (cross section similar to an inverted U shape) and a width of 6mm is provided between each group of the inner inclined surface 2 (210b), and the axial direction of the receiving groove 2 (210c) is oriented in the direction of the inner inclined surface 2 (210b). The top of the receiving groove 2 (210c) of the transparent shell 2 (210) is 3mm away from the top surface of the transparent shell 2 (210). Alternatively, a receiving groove having a longitudinal section or a cross section that is a trapezoid with an open bottom may be selected.

LED straw hat lamp beads 2 (220):

The second LED straw hat lamp bead (220) is a F5 type straw hat lamp bead with a diameter of Φ=5 mm, which is welded on the circuit board. The metal pin is bent 90 degrees so that the light axis direction is parallel to the circuit board. The circuit board welded with the second LED straw hat lamp bead (220) is set in the second accommodating groove (210c) through a limiting structure, so that the distance between the F5 type straw hat lamp bead and the top wall of the second accommodating groove (210c) is 0.5 mm. The main light emission direction of the straw hat lamp bead is parallel to the bottom surface of the road stud and faces the direction of the corresponding second inner inclined surface (210b), and its half-value angle after passing through the built-in primary lens is 15°.

Separator 2 (230):

The second separator (230) is played by the circuit board with threading holes, which is fixed under the top shell of the second transparent shell (210) through a limiting structure and bonding, and forms a sealed air layer (240) between the second accommodating groove (210c).

A single chip microcomputer control circuit serving as control circuit 2 (290) is also soldered onto the circuit board.

The LED light distribution and emission structure formed by combining the above elements becomes a partial structure of the road stud.

Retroreflector 2 (270):

The second retroreflector (270) is a convex-shaped reflective lattice plate made of transparent PMMA resin by injection molding, and is fixed to the convex-shaped grooves on the front and rear sides of the second transparent shell (210) by ultrasonic heat sealing.

Photovoltaic Module II (280):

The second photovoltaic module (280) is a rectangular monocrystalline silicon solar cell panel, which is embedded from the bottom opening of the second transparent shell (210) and fixed to the bottom of the center of the top shell of the second transparent shell (210) with light-conducting glue.

First, the reflective lattice plate is fixed to the convex grooves on the front and rear sides of the second transparent shell (210) through ultrasonic heat sealing, and then the second transparent shell (210) is turned upside down, and the photovoltaic module (280) and the circuit board are fixed in sequence. Then, the wires are connected from the threading holes of the circuit board and connected to the lithium battery serving as the second energy storage element (2100). Then, silicone glue or hot melt glue is used to pre-package between the circuit board and the inner wall of the second transparent shell (210), and epoxy resin is poured into the bottom opening of the second transparent shell (210) until it is flush with its bottom surface and cured to obtain the entire road stud. The LED light distribution emission structure is symmetrically located on the left and right sides of the top of the road stud.

The solar luminous reflective raised road stud of the present invention is fixed on the road surface by screws and adhesive during installation, with the front and rear sides of the road stud facing the main direction of travel of road vehicles. The light emitted by the F5-type straw hat lamp bead is first focused by a lens, and then, after secondary refraction by the inner and outer walls, is displaced upward by ΔH≈3.2mm and emitted horizontally in the main direction of travel of road vehicles. It can emit stroboscopic light or constant light with a certain period and duty cycle, and has the advantages of high proportion of horizontal emission light intensity, longer viewing distance, high recognition, good luminous effect on motor vehicle drivers, strong pressure and impact resistance, high structural strength, and easier control of luminous angle, etc.

Embodiment three:

A buried solar luminous road stud comprises a transparent shell three (310), an LED straw hat lamp bead three (320), a separator three (330), an air layer three (340), a top cover three (361), a bottom shell three (362), a photovoltaic module three (380), a control circuit three (390), an energy storage element three (3100), and an external waterproof wire three, as shown in FIGS. 20-23.

Transparent shell three (310):

The transparent shell 3 (310) is a transparent PC shell, and its shape is similar to an inverted transparent ashtray. Its lower part is a petal-shaped column, and its top is provided with a cross-shaped convex corresponding to the cross-shaped window on the top cover 3 (361). Four relatively sunken concave parts are provided with two groups of positive and reverse relative inclined surfaces with a height difference of 6.5mm and a thickness of 10mm. The outer inclined surface 3 (310a) and the inner inclined surface 3 (310b) of the inclined surface are parallel to each other and form an angle of 48° with the top surface. A receiving groove 3 (310c) with an arched top and a width of 7mm is provided between each group of relative inner inclined surfaces 3 (310b). The top of the transparent shell 3 (310) is 3mm away from the top surface of the transparent shell 3 (310).

LED straw hat lamp beads three (320):

The LED straw hat lamp bead three (320) is a F6 type straw hat lamp bead with a diameter of Φ=6mm, which is welded on the circuit board. The metal pin is bent 90 degrees so that the light axis direction is parallel to the circuit board. The circuit board welded with the LED straw hat lamp bead three (320) is set in the accommodating groove three (310c) through a limiting structure, so that the distance between the F6 type straw hat lamp bead and the top wall of the accommodating groove three (310c) is 0.5mm. The main light emission direction of the straw hat lamp bead is parallel to the bottom surface of the road stud and faces the corresponding inner bevel three (310b). The half-value angle after passing through the built-in primary lens is 15°.

Separator Three (330):

The separator 3 (330) is a circuit board with the LED straw hat lamp bead 3 (320) welded thereon, fixed below the receiving groove 3 (310c) by means of a limiting structure and adhesive, and forms a sealed air layer 3 (340) between the receiving groove 3 (310c). A single-chip control circuit is also welded on the circuit board.

The LED light distribution and emission structure formed by combining the above elements becomes a partial structure of the road stud.

Top cover three (361):

The top cover three (361) is a circular cast aluminum top ring with a wide body window similar to a wide cross in the middle part. The top ring is symmetrically provided with four upper convex bodies with a height of 7.5 mm and a sloped inwardly convex surface facing the outer side, which serve as a protective body. The height of the upper convex body is greater than or equal to the height difference of the light-emitting part of the inclined surface of the transparent shell three (310). Four gaps are formed between the upper convex body and the remaining flat part of the top ring that is flush with the outer edge. The four outer inclined surfaces three (310a) correspond to the above-mentioned gaps respectively.

Bottom shell three (362):

The bottom shell three (362) is a cast aluminum cavity shell with a containing cavity, an opening facing upward, and a larger top and smaller bottom.

Photovoltaic Module 3 (380):

Photovoltaic assembly three (380) is a rectangular monocrystalline silicon solar cell panel, which is fixed to the central part of the inner bottom surface of the top shell of transparent shell three (310) from the rectangular opening at the bottom of transparent shell three (310) using light-conducting adhesive.

The transparent shell (310) is inverted, and the photovoltaic module (380) and the circuit board with the LED straw hat lamp beads (320) and the control circuit welded thereon are fixed in sequence. Then, a wire is connected from the circuit board to a lithium battery (3100) serving as an energy storage element. Then, silicone glue or hot melt glue is used to pre-package the circuit board and the inner wall of the transparent shell (310). Epoxy resin is poured into the bottom opening of the transparent shell (310) until it is flush with its bottom surface and cured to obtain a luminous inner shell. A gasket is placed in the accommodating cavity of the bottom shell (362). The luminous inner shell is embedded in the top opening of the bottom shell (362) according to the required tolerance range. Then, the top cover (361) is covered and fixed with structural glue or fasteners to form a road stud with a luminous inner shell surrounded by a metal top cover (361) and a bottom shell (362). The LED light distribution emission structure is symmetrically located on the left and right sides of the top of the road stud.

The buried solar luminous road stud of the present invention has a main body buried in the road surface until the edge of the bottom shell is flush with the road surface during installation, the top of the road stud protrudes about 7.5mm from the ground, the front and rear sides of the road stud face the main direction of road vehicles, the light emitted by the F6 straw hat lamp bead is first concentrated by a lens, and then after secondary refraction by the inner and outer walls, it is displaced upward by ΔH≈3.3mm and emitted horizontally in the main direction of road vehicles, and can flash or emit constantly at a certain period and duty cycle, and has the advantages of high proportion of horizontal emission light intensity, longer viewing distance, and a bright light spot of about 6.5mm in diameter can still be seen in the horizontal direction under the illumination condition of 30LUX, so the recognition is very high, good lighting effect for motor vehicle drivers, strong pressure and impact resistance (compressive strength can reach 30 tons, which is much higher than the 10-ton standard required by the national standard), high structural strength, and easier control of the lighting angle.

Embodiment 4:

A buried active light-emitting road stud comprises a transparent shell four (410), LED light-emitting bodies four (421) (422), a separator four, an air layer four (440), a containing cavity four (450), a top cover four (461), a bottom shell four (462), and an external waterproof wire four, as shown in FIGS. 24-26.

Transparent shell 4 (410):

The transparent shell 4 (410) is a transparent PC shell, and its shape is similar to an inverted transparent ashtray. Its lower part is a petal-shaped column, and its top is provided with a cross-shaped convex corresponding to the cross-shaped window on the top cover 4 (461). Four relatively sunken concave parts are provided with two groups of positive and reverse relative inclined surfaces with a height difference of 6.5mm and a thickness of 11mm. The outer inclined surface 4 (410a) and the inner inclined surface 4 (410b) of the inclined surface are parallel to each other and form an angle of 43° with the top surface. A receiving groove 4 (410c) with an arched top and a width of 6mm is provided between each group of relative inner inclined surfaces 4 (410b). The top of the receiving groove 4 (410c) of the transparent shell 4 (410) is 3.3mm away from the top surface of the transparent shell 4 (410).

The center of the inner top wall of the transparent shell four (410) is surrounded by convex ribs to form a square groove as the accommodating cavity four (450).

LED straw hat lamp beads four (420):

Among them, the LED straw hat lamp bead four (421) is a F5 type straw hat lamp bead with a diameter of Φ=5mm, which is welded on the circuit board, and the metal pin is bent 90 degrees so that the light axis direction is parallel to the circuit board. The circuit board welded with the LED straw hat lamp bead four (420) is set in the accommodating groove four (410c) through a limiting structure, so that the distance between the F5 type straw hat lamp bead and the top wall of the accommodating groove four (410c) is 0.5mm. The main light emission direction of the straw hat lamp bead is parallel to the bottom surface of the road stud and faces the corresponding inner bevel four (410b), and its half-value angle after passing through the built-in primary lens is 5°.

Four SMD LEDs (422) are arranged in a linear array and welded on a square circuit board. The preformed sheet of the long afterglow light emitter is fixed to the housing cavity four (450) by light-guiding adhesive. Then the circuit board with the four SMD LEDs (422) welded thereon is arranged below the long afterglow light emitter.

Separator 4:

The separator 4 is a circuit board with the LED straw hat lamp bead 4 (420) welded thereon, fixed below the receiving groove 4 (410c) by a limiting structure and adhesive, and forms a sealed air layer 4 (440) between the receiving groove 4 (410c). A single-chip control circuit can also be welded on the circuit board.

The LED light distribution and emission structure formed by combining the above elements becomes a partial structure of the road stud.

Top cover four (461):

The top cover four (461) is a circular cast aluminum top ring with a wide body window similar to a wide cross in the middle part. The top ring is symmetrically provided with two upper protrusions with a sloped side facing the outside, an arc shape when viewed from above, and a height of 7mm, which serve as protective bodies. The height of the upper protrusions is greater than or equal to the height difference of the inclined surface of the light emitting part of the transparent shell four (410). Two gaps are formed between the upper protrusions and the remaining flat part of the top ring that is flush with the outer edge. The four outer inclined surfaces four (410a) correspond to the above-mentioned gaps in pairs.

Bottom shell four (462):

The bottom shell four (462) is a cast aluminum cavity shell with a containing cavity, an opening upward, and a larger top and smaller bottom.

Invert the transparent shell 4 (410), embed the long afterglow luminous body, fix the circuit board, connect the waterproof wire from the circuit board, and then use silicone glue or hot melt glue to pre-encapsulate between the circuit board and the inner wall of the transparent shell 4 (410), and then pour epoxy resin into the bottom opening of the transparent shell 4 (410) to a certain height from its bottom surface and solidify to obtain a luminous inner shell with a cable accommodating cavity at the bottom, pass the external waterproof wire through the threading hole of the bottom shell 4 (462) and connect it to the wire at the bottom of the luminous inner shell. The waterproof wire connected to the luminous inner shell in the cable receiving groove is connected through a waterproof joint, a gasket is placed in the receiving cavity of the bottom shell four (462), the luminous inner shell is embedded in the top opening of the bottom shell four (462) according to the required tolerance range of the clearance, and then the top cover four (461) is covered, and the package is fixed with structural adhesive or fasteners to form a road stud with the luminous inner shell surrounded by the metal top cover four (461) and the bottom shell four (462), and the LED light distribution emission structure is symmetrically located on the front and rear sides of the top of the road stud.

The buried active light-emitting road stud of the present invention has a main body buried in the road surface until the edge of the bottom shell is flush with the road surface during installation, the top of the road stud protrudes from the ground by about 7mm, the front and rear sides of the road stud face the main direction of road vehicles, the light emitted by the F5-type straw hat lamp bead is first focused by a lens, and then is displaced upward by ΔH≈3.8mm after secondary refraction by the inner and outer walls to be emitted horizontally in the main direction of road vehicles, and can flash or emit constantly at a certain period and duty cycle, and has the advantages of high proportion of horizontal emission light intensity, longer viewing distance, high recognition, good lighting effect for motor vehicle drivers, strong pressure and impact resistance, high structural strength, easier control of lighting angle, etc., and can also provide weak light illumination or guidance for pedestrians and non-motor vehicle drivers by stroboscopically stimulating light or afterglow light at a certain period and duty cycle by the long afterglow light emitter on the top under the influence of LED.

Embodiment five:

An underground active light-emitting road stud comprises a transparent shell five (510), an LED light-emitting body five (521) (522), a long afterglow light-emitting body, a separator five (530), an air layer five (540), a containing cavity five (550), a top cover five (561), a bottom shell five (562), and an external waterproof wire five, as shown in FIGS. 27-31.

Transparent shell five (510):

The transparent shell 5 (510) is a transparent PC shell, and its shape is similar to an inverted transparent ashtray. Its lower part is a petal-shaped column, and its top is provided with a square convex corresponding to the square window on the top cover 5 (561). The thickness of the top shell is 10mm. The sides of the square convex are provided with a pair of relative inclined surfaces with a height difference of 7mm and a thickness of 10.5mm on the front and rear sides. The outer inclined surface 5 (510a) and the inner inclined surface 5 (510b) of the inclined surface are parallel to each other and form an angle of 45° with the top surface. Between the opposite inner inclined surfaces 5 (510b), there is a 7mm wide receiving groove 5 (510c) with 5 connected tops and an arched top. The top of the receiving groove 5 (510c) is 3mm away from the top surface of the transparent shell 5 (510).

The center of the inner top wall of the transparent shell five (510) is surrounded by convex ribs to form a square groove as the accommodating cavity five (550).

LED light source 5 (521) (522):

Among them, the LED straw hat lamp bead five (521) is a F5 type straw hat lamp bead with a diameter of Φ=5mm, and five of them are arranged in an array and welded on a strip circuit board. The metal pin is bent 90 degrees so that the light axis direction is parallel to the circuit board, and then the circuit board welded with the LED straw hat lamp bead five (521) is set in the accommodating groove five (510c) through a limiting structure, so that the distance between the F5 type straw hat lamp bead and the top wall of the accommodating groove five (510c) is 1mm. The main light emission direction of the straw hat lamp bead is parallel to the bottom surface of the road stud and faces the corresponding inner bevel five (510b), and its half-value angle after passing through the built-in primary lens is 10°.

The SMD LEDs 5 (522) are arranged in a dot matrix and welded on a square circuit board. The preformed sheet of the long afterglow light emitter is bonded and solidified in the accommodating cavity 5 (550) by light-guiding adhesive. Then, the circuit board welded with the SMD LEDs 5 (522) is arranged below the long afterglow light emitter.

Separator Five (530):

The separator 5 (530) is a circuit board with the LED straw hat lamp beads 5 (521) welded thereon, fixed below the receiving groove 5 (510c) by means of a limiting structure and adhesive, and forms a sealed air layer 5 (540) between the receiving groove 5 (510c). A single-chip control circuit can also be welded on the circuit board.

The LED light distribution and emission structure formed by combining the above elements becomes a partial structure of the road stud.

Top cover five (561):

The top cover 5 (561) is a circular cast aluminum top ring with a wide body and a window similar to a square in the middle. The top ring is symmetrically provided with two upper convex bodies with a sloped side facing outward and a half-moon shape when viewed from above, and a height of 7.5 mm, which serve as protective bodies. The height of the upper convex bodies is greater than or equal to the height difference of the inclined surface of the light emitting part of the transparent shell 5 (510). Two gaps are formed between the upper convex bodies and the remaining flat surface part of the top ring that is flush with the outer edge. The relative inclined surfaces of the transparent shell 5 (510) on the front and back sides just correspond to the above-mentioned gaps.

Bottom shell five (562):

The bottom shell five (562) is a cast aluminum cavity shell with a containing cavity, an opening facing upward, and a larger top and smaller bottom.

The transparent shell 5 (510) is inverted, and the long afterglow luminous body is embedded. After the circuit board is fixed, the waterproof wire is connected from the circuit board. Then, silicone glue or hot melt glue is used to pre-encapsulate between the circuit board and the inner wall of the transparent shell 5 (510). Then, epoxy resin is poured into the bottom opening of the transparent shell 5 (510) to a certain height from its bottom surface and solidified to obtain a luminous inner shell with a cable accommodating cavity at the bottom. The external waterproof wire is passed through the threading hole of the bottom shell 5 (562) and connected to the waterproof wire connected to the luminous inner shell in the cable accommodating groove at the bottom of the luminous inner shell. The two parts are connected by a waterproof joint, a gasket is placed in the accommodating cavity of the bottom shell five (562), the luminous inner shell is embedded into the top opening of the bottom shell five (562) according to the clearance fit within the required tolerance range, the top cover five (561) is covered, and the package is fixed with structural adhesive or fasteners to form a road stud with the luminous inner shell surrounded by the metal top cover five (561) and the bottom shell five (562). The LED light distribution and emission structure is symmetrically located on the front and rear sides of the top of the road stud. The LED light distribution and emission structure can also be provided only on the front side of the top of the road stud to be used as a unidirectional luminous road stud.

The buried active light-emitting road stud of the present invention has a main body buried in the road surface until the edge of the bottom shell is flush with the road surface during installation, the top of the road stud protrudes from the ground by about 7.5 mm, the front and rear sides of the road stud face the main direction of travel of road vehicles, the light emitted by the F5-type straw hat lamp bead is first focused by a lens, and then is displaced upward by ΔH≈3.8 mm after secondary refraction by the inner and outer walls to be emitted horizontally in the main direction of travel of road vehicles, and can flash or emit constantly at a certain period and duty cycle, and has the advantages of high proportion of horizontal emission light intensity, longer viewing distance, high recognition, good lighting effect for motor vehicle drivers, strong pressure and impact resistance, high structural strength, easier control of lighting angle, etc., and can also provide weak light illumination or guidance for pedestrians and non-motor vehicle drivers by stroboscopically stimulating light or afterglow light at a certain period and duty cycle by the long afterglow light emitter on the top under the influence of LED.

Embodiment six:

An underground active light-emitting road stud comprises a transparent shell six (610), an LED light-emitting body six (621) (622), a long afterglow light-emitting body, a separator six (630), an air layer six (640), a receiving cavity six (650), a metal protective gland six (661), a bottom shell six (662), and an external waterproof wire five, as shown in Figures 32-35.

Transparent shell six (610):

The transparent shell 6 (610) is a transparent PC shell, and its shape is similar to an inverted transparent ashtray. Its lower part is a petal-shaped column, and its top is provided with two square convexities corresponding to the square windows on the metal protective pressure cover 6 (661). The positive and reverse sides of the square convexities are provided with a pair of relative inclined surfaces with a height difference of 6mm and a thickness of 10mm. The outer inclined surface 6 (610a) and the inner inclined surface 6 (610b) of the inclined surface are parallel to each other and form an angle of 45° with the top surface. Between the opposite inner inclined surfaces 6 (610b), there is a receiving groove 6 (610c) with 5 connected parts, arranged in an array, with an arched top and a width of 6mm. The top of the receiving groove 6 (610c) is 3mm away from the top surface of the transparent shell 6 (610).

The center of the inner top wall of the transparent shell six (610) is surrounded by convex ribs to form a square groove as the accommodating cavity six (650).

LED light source six (621) (622):

Among them, the LED straw hat lamp bead six (621) is a F5 type straw hat lamp bead with a diameter of Φ=5mm, 5 of which are arranged in an array and welded on a strip circuit board, and the metal pin is bent 90 degrees so that the light axis direction is parallel to the circuit board, and then the circuit board welded with the LED straw hat lamp bead six (621) is set in the accommodating groove six (610c) through a limiting structure, so that the distance between the F5 type straw hat lamp bead and the top wall of the accommodating groove six (610c) is 0.6mm, and the main light emission direction of the straw hat lamp bead is parallel to the bottom surface of the road stud and faces the corresponding inner bevel six (610b), and its half-value angle after passing through the built-in primary lens is 10°.

Six SMD LEDs (622) are arranged in a dot matrix and welded on a square circuit board. The preformed sheet of the long afterglow light emitter is bonded and solidified in the receiving cavity six (650) inside the square upper convex part by light-guiding adhesive. Then the circuit board with the six SMD LEDs (622) welded thereon is arranged below the long afterglow light emitter.

Separator Six (630):

The separator 6 (630) is a circuit board with the LED straw hat lamp beads 6 (621) welded thereon, fixed below the receiving groove 6 (610c) by means of a limiting structure and adhesive, and forms a sealed air layer 6 (640) between the receiving groove 6 (610c). A single-chip control circuit can also be welded on the circuit board.

The LED light distribution and emission structure formed by combining the above elements becomes a partial structure of the road stud.

Metal protective gland six (661):

The metal protective pressure cover six (661) is a circular cast aluminum pressure cover with a raised top, and rectangular openings are provided on its front and rear sides, and two square windows are provided in the middle; when installed, the metal protective pressure cover six (661) is pressed onto the top of the transparent shell six (610), and the two square protrusions of the transparent shell six (610) are just embedded in the middle square window, and the front and rear sets of relative inclined surfaces of the transparent shell six (610) just correspond to the rectangular openings on its front and rear sides. At this time, the top of the above-mentioned LED light distribution structure is covered by the 3mm thick beam of the metal protective pressure cover six (661).

Bottom shell six (662):

The bottom shell six (662) is a cast aluminum cavity shell with a containing cavity, an opening upward, and a larger top and smaller bottom.

The transparent shell six (610) is inverted and a long afterglow light source is embedded in it. After the circuit board is fixed, a waterproof wire is connected from the circuit board. Then, silicone glue or hot melt glue is used to pre-package between the circuit board and the inner wall of the transparent shell six (610). Then, epoxy resin is poured into the bottom opening of the transparent shell six (610) to a certain height from its bottom surface and solidified to obtain a luminous inner shell with a cable accommodating cavity at the bottom. The external waterproof wire is passed through the threading holes on the left and right sides of the bottom shell six (662) and connected to the waterproof wire connected to the luminous inner shell in the cable accommodating groove at the bottom of the luminous inner shell. A gasket is placed in the accommodating cavity of the bottom shell six (662). The luminous inner shell is embedded in the top opening of the bottom shell six (662) according to the required tolerance range of the clearance fit, and the metal protective pressure cover six (661) is covered. The package is fixed with structural glue or fasteners to form a road spike with a luminous inner shell surrounded by the metal protective pressure cover six (661) and the bottom shell six (662).

The buried active light-emitting road stud of the present invention has a main body buried in the road surface until the edge of the bottom shell is flush with the road surface during installation, the top of the road stud protrudes from the ground by about 9mm, the front and rear sides of the road stud face the main direction of road vehicles, the light emitted by the F5-type straw hat lamp bead is first concentrated by a lens, and then is displaced upward by ΔH≈3.6mm after secondary refraction by the inner and outer walls to be emitted horizontally in the main direction of road vehicles, and can flash or constantly emit light with a certain period and duty cycle, and has the advantages of high proportion of horizontal emission light intensity, high recognition, longer viewing distance, good lighting effect for motor vehicle drivers, strong pressure and impact resistance, high structural strength, easier control of light emission angle, etc., and can also provide weak light illumination or guidance for pedestrians and non-motor vehicle drivers through the long afterglow light source on the top stimulated by LED to flash or afterglow with a certain period and duty cycle, and the LED light distribution and emission structure is symmetrically located on the front and rear sides of the top of the road stud, and the above-mentioned LED light distribution and emission structure can also be provided only on the front side of the top of the road stud for use as a unidirectional light-emitting road stud.

The above description is only a preferred embodiment of the present invention and is not intended to limit the present invention. All modifications or variations, combinations or superpositions, equivalent substitutions, etc. made within the spirit and principles of the present invention, or the application of this technology to related and similar technical fields, should be included in the protection scope of the present invention.

Claims (32)

1. An LED light distribution and emission structure, comprising a transparent shell (1), an LED light emitting body (2) with a focusing lens, a separator (3), and an air layer (4), characterized in that: The transparent shell (1) is a transparent shell with a local height difference structure, a top with a certain thickness, a main body of the top being flat or nearly flat, a downwardly open accommodating cavity, and a refractive index n between 1.45 and 2.1. The inner bottom surface of the top of the transparent shell (1) is provided with a recessed accommodating groove (1c) serving as a light emitting groove. The inner wall of the accommodating groove (1c) is provided with a light incident surface (1b) having a certain height (H3) and an inclination angle of one (θ1) at at least one end thereof for light to be incident. The outer surface of the shell corresponding to the light incident surface (1b) is a light emitting surface (1a) having a certain height (H2) and an inclination angle of two (θ2) for light to be emitted. There is a sufficient average width (W) between the light incident surface (1b) and the light emitting surface (1a). The LED light-emitting body (2) is arranged in the receiving groove (1c); after the LED light-emitting body (2) is focused by a focusing lens, the main light beam along the normal direction is at an elevation angle (θ3), forming a certain incident angle on the light incident surface (1b); a separator (3) is arranged around the LED light-emitting body (2), and an air layer (4) is formed at least between the LED light-emitting body (2) and the light incident surface (1b); the LED light-emitting body (2) is encapsulated in the transparent shell (1) through the separator (3), forming a specific optical structure in which LED light-emitting parameters, light path transmission and optical structure parameters match each other and are combined with a forming structure to complete the light distribution design; The optical structure is that the light emitted by the LED luminous body (2) is mainly focused by a focusing lens, and the main light beam in the normal direction is incident from the light incident surface (1b) with an inclination angle of one (θ1) on the transparent shell (1) in the horizontal direction or at a small angle of elevation (θ3) with the horizontal direction, undergoes a first refraction, and then propagates through the side wall of the transparent shell (1) with a certain width W, and undergoes a second refraction from the light exit surface (1a) with an inclination angle of two (θ2) on the transparent shell (1), so as to achieve an upward displacement (ΔH) of the main light beam to the target value required by the design, and the exit point of the main light beam in the normal direction falls at the position of the median height of the light exit surface (1a) to form a light emission center, and is emitted in the horizontal direction, so as to achieve a spatial light field optimization distribution in which the exit light is mainly emitted in the horizontal direction and is supplemented by the upward direction, and the overall exit efficiency of the exit light is high, and the LED light distribution exit structure achieves the required physical indicators such as structural strength, structural height difference limitation and waterproof function. 2. The LED light distribution and emission structure according to claim 1 is characterized in that: the light incident surface (1b) is a beveled light incident surface (1ba) or a curved surface, a spherical surface or a free-form surface light incident surface (1bb), and the light emitting surface (1a) is a beveled light emitting surface (1aa) or a curved surface, a spherical surface or a free-form surface light emitting surface (1ab). 3. The LED light distribution and emission structure according to claim 1 is characterized in that: the light incident surface (1b) is a beveled light incident surface (1ba) or a curved surface or a spherical surface or a free-form surface light incident surface (1bb), and the light emitting surface (1a) is a curved surface or a spherical surface or a free-form surface light emitting surface (1ab), and the curvature of the light incident surface (1b) is smaller than the curvature of the light emitting surface (1a), and the two form a shape with both focusing functions. 4. The LED light distribution and emission structure according to claim 1 is characterized in that: the light incident surface (1b) is a beveled light incident surface (1ba), and the light emitting surface (1a) is a beveled light emitting surface (1aa) or a curved surface, a spherical surface or a free-form surface (1ab). 5. The LED light distribution and emission structure according to claim 1 is characterized in that: when the LED light-emitting body (2) emits light, the main light beam in the normal direction intersects with the light-emitting surface (1a) near the center point of the light-emitting surface (1a) to form a light-emitting center and emits in a horizontal direction, and the light emitted by the LED light-emitting body (2) forms a large-area complete light spot on the light-emitting surface (1a) in the horizontal direction, the diameter of which is greater than or equal to the diameter (Φ) of the focusing lens of the LED light-emitting body (2) and less than or equal to the height (H2) of the light-emitting surface (1a). 6. The LED light distribution and emission structure according to claim 1 is characterized in that: the inclination angle (θ1) of the light incident surface (1b), the inclination angle (θ2) of the light emitting surface (1a), the elevation angle (θ3) of the main light beam in the normal direction of the LED light-emitting body (2) after being focused by the focusing lens, and the horizontal width (W) of the side wall at the middle position of the light emitting surface (1a) cause the main light beam of the LED light-emitting body (2) to produce an upward displacement (ΔH), and the upward displacement (ΔH), the diameter (Φ) of the focusing lens of the LED light-emitting body (2), the thickness (H1) from the highest point of the top of the accommodating groove (1c) to the top surface of the transparent shell (1), the height (H2) of the light emitting surface (1a), and the distance (H4) between the LED light-emitting body (2) and the top wall of its accommodating groove (110c) satisfy: H1+H4≥ΔH≥H1+H4+Φ-H2, or H2-Φ/2≥ΔH≥Φ/2. 7. The LED light distribution structure according to claim 1, characterized in that the structure of the transparent shell (1) satisfies: The first inclination angle (θ1) of the light incident surface (1b) is an acute angle, and the second inclination angle (θ2) of the light emitting surface (1a) is an acute angle, wherein 85°≥θ1≥θ2≥18° and 30°≥θ1-θ2≥0°; The elevation angle (θ3) of the main light beam in the normal direction of the LED light emitting body (2) after being focused by the focusing lens satisfies 30°≥θ3≥0°, and the half-value angle θ _1/2 of the light intensity of the LED light emitting body (2) after being focused by the focusing lens satisfies 30°≥ θ _1/2 ≥5°; Alternatively, the elevation angle (θ3) of the main light beam in the normal direction of the LED light emitting body (2) after being focused by the focusing lens and the light intensity half-value angle θ _1/2 of the LED light emitting body (2) after passing through the focusing lens satisfy: θ _1/2 ≥θ3 ≥ 0°. 8. The LED light distribution structure according to claim 1, characterized in that: the horizontal width (W1) of the side wall at the high position of the light emitting surface (1a), the horizontal width (W2) of the side wall at the low position of the light emitting surface (1a), and the thickness (H1) from the highest point of the top of the accommodating groove (1c) to the top surface of the transparent shell (1) satisfy: 20mm≥W2≥W1≥2H1≥6mm; The distance between the LED light-emitting body (2) and the top wall of the accommodating groove (110c) thereof is 1/5 of the diameter (Φ) of the focusing lens of the LED light-emitting body (2); The diameter (Φ) of the focusing lens of the LED light-emitting body (2), the height (H2) of the light-emitting surface (1a), and the height (H3) of the light-entering surface (1b) satisfy the following conditions: 10mm≥H2≥Φ, 12mm≥H3≥Φ, and 10mm≥Φ≥3mm. 9. The LED light distribution and emission structure according to claim 1, characterized in that: the light emitting surface (1a) of the transparent shell (1) is an inclined surface or a curved surface; The elevation angle (θ3) of the main light beam in the normal direction of the emitted light of the LED light emitting body (2) when incident at a small elevation angle (θ3) satisfies: 30°≥θ3≥0°, the inclination angle 1 (θ1) of the light incident surface (1b) and the inclination angle 2 (θ2) of the light emitting surface (1a) satisfy θ1≥θ2, and the inclination angle 1 (θ1), the inclination angle 2 (θ2) and the horizontal width of the side wall at the middle position of the light emitting surface (1a) match, so as to satisfy: the main light beam in the normal direction of the LED light emitting body (2) is displaced upward after being refracted by the light incident surface or/and the light emitting surface and is emitted in the horizontal direction; Alternatively, the inclination angle (θ1) of the light incident surface (1b), the inclination angle (θ2) of the light emitting surface (1a), the elevation angle (θ3) of the main light beam in the normal direction of the emitted light of the LED light emitting body (2), and the refractive index n of the transparent shell (1) satisfy the following conditions: n ² ·sin ² (θ1-θ2)=cos ² (θ1+θ3)+cos ² θ2-2·cosθ2·cos(θ1+θ3)·cos(θ1-θ2), so that the light emitted by the LED is displaced upward after refraction and emitted in the horizontal direction. 10. The LED light distribution and emission structure according to claim 1, characterized in that: the light emitting surface (1a) of the transparent shell (1) is an inclined surface or a curved surface; The main light beam in the normal direction of the emitted light of the LED light emitting body (2) is vertically incident along the light incident surface, is refracted and deflected by the light emitting surface, is displaced upward, and is emitted in the horizontal direction; Or the inclination angle (θ1) of the light incident surface (1b), the inclination angle (θ2) of the light emitting surface (1a), the elevation angle (θ3) of the main light beam in the normal direction of the emitted light of the LED light emitting body (2), and the refractive index n of the transparent shell (1) satisfy: 30°≥θ3≥7.5°, θ1＝90°-θ3, cosθ2·(n·cosθ3-1)＝n·sinθ2·sinθ3， After the incident light is vertically incident on the light-entering surface, it is refracted and deflected by the light-emitting surface, resulting in an upward displacement and being emitted in the horizontal direction. 11. The LED light distribution and emission structure according to claim 1, characterized in that: the light emitting surface (1a) of the transparent shell (1) is an inclined surface or a curved surface; A main light beam in the normal direction of the outgoing light of the LED light emitting body (2) is incident in the horizontal direction, refracted by the light incident surface (1b) and the light exiting surface (1a) with the same inclination angle, generates an upward displacement (ΔH), and is emitted in the horizontal direction; Or the inclination angle (θ1) of the light incident surface (1b), the inclination angle (θ2) of the light emitting surface (1a), and the elevation angle (θ3) of the main light beam in the normal direction of the emitted light of the LED light emitting body (2) satisfy: θ3＝0°, 60°≥θ1＝θ2≥30°, so that the incident light is horizontally incident on the light-entering surface, and then refracted and deflected by the light-emitting surface, resulting in an upward displacement (ΔH) and being emitted in the horizontal direction; The upward displacement of the light beam ΔH=W1·sinθ1·cosθ1·[1-sinθ1/(n ² -cos ² θ1) ^1/2 ], and the upward displacement (ΔH), the diameter (Φ) of the focusing lens of the LED light emitting body (2), the height (H2) of the light emitting surface (1a), and the distance (H4) between the LED light emitting body (2) and the top wall of its containing groove (110c) satisfy: H2-Φ/2≥ΔH≥Φ/2. 12. The LED light distribution structure according to claim 1, characterized in that the light emitting surface (1a) is a curved surface, and the ratio of its arc height to arc span is between 1:12 and 1:4. 13. The LED light distribution structure according to claim 1 is characterized in that the ratio of the light intensity in the horizontal direction and the light intensity in the upward direction of the light emitted from the outer surface of the transparent shell (1) by the LED light-emitting body (2) is between 3:1 and 12:1. 14. The LED light distribution structure according to claim 1 is characterized in that: the transparent shell (1) is an injection molded shell, and the inner wall of the transparent shell (1) is a structure that is conducive to the injection molding process; the wall thickness of the injection molded shell is between 3 mm and 15 mm. 15. The LED light distribution and emission structure according to claim 1 is characterized in that a notch (1d) which is conducive to injection molding is provided in the thicker part between the light incident surface (1b) and the light emitting surface (1a) of the transparent shell (1), and a transparent light-guiding glue cured molding having a refractive index close to that of the shell material is provided in the notch (1d). 16. The LED light distribution structure according to claim 1 is characterized in that: the accommodating groove (1c) is a accommodating groove with a cross section along the light emitting direction being an inverted U-shape or a downwardly open trapezoid, or a accommodating groove with a longitudinal section along the light emitting direction being an downwardly open trapezoid or an inverted V-shape, or a accommodating groove formed by a plurality of accommodating groove units with a cross section along the light emitting direction being an inverted U-shape or a downwardly open trapezoid, or a accommodating groove formed by a plurality of accommodating groove units with a longitudinal section along the light emitting direction being an downwardly open trapezoid or an inverted V-shape. 17. The LED light distribution and emission structure according to claim 1 is characterized in that: a single LED light-emitting body is arranged in the accommodating groove (1c) whose width is between twice the diameter (Φ) of the focusing lens of the LED light-emitting body (2) and once the diameter (Φ) of the focusing lens of the LED light-emitting body (2), or two or more LED light-emitting units are arranged in an array in the accommodating groove (1c) whose width is greater than or equal to twice the diameter (Φ) of the focusing lens of the LED light-emitting body (2). 18. The LED light distribution and emission structure according to claim 1, characterized in that: a transparent partition is further provided in the accommodating groove whose width is greater than or equal to twice the diameter (Φ) of the focusing lens of the LED light-emitting body (2). 19. The LED light distribution and emission structure according to claim 1, characterized in that the focusing lens carried by the LED illuminant (2) is a primary focusing lens packaged integrally with the LED or a secondary focusing lens assembled twice. 20. The LED light distribution structure according to claim 1, characterized in that: the LED light-emitting body (2) is a pin-type upright packaged LED columnar lamp bead with a primary focusing lens on the top, or a SMD LED with a focusing lens. 21. The LED light distribution structure according to claim 1 is characterized in that: a reflective layer (6) for reflecting upward is also provided below the LED light-emitting body (2), and the reflective layer (6) is a white printed layer or a coated reflective sheet on a circuit board; or a light diffusion layer is also provided above the LED light-emitting body (2); or a long afterglow light-emitting layer is also provided above the LED light-emitting body (2). 22. An LED light distribution and emission structure according to claim 1, characterized in that: the transparent shell (1) is provided with a long afterglow luminous body that can be excited by LED light, or the receiving groove (1c) of the transparent shell (1) is also provided with a long afterglow luminous body that can be excited by LED light, or the LED luminous body (2) is provided with a long afterglow luminous body that can be excited by LED light; thereby forming an LED light distribution and emission structure with a long afterglow luminous function. 23. A light-emitting road stud with an LED light distribution and emission structure as claimed in claim 1, characterized in that: the LED light-emitting body (2) and other accessories are packaged in a transparent shell (1) to form a light-emitting road stud, or the LED light-emitting body (2) is packaged in a transparent shell (1) to form a light-emitting inner shell with an LED light distribution and emission structure, and the light-emitting inner shell and the protective shell (5) are combined by packaging glue or fasteners to form a light-emitting road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top part of the transparent shell (1) is exposed; wherein the LED light distribution and emission structure are symmetrically arranged at The front and rear side parts of the top of the road stud are respectively provided with a structure in which the main light-emitting direction of the emitted light is bidirectionally emitted in the forward direction and the backward direction, or the front side part of the top of the road stud is provided with a structure in which the main light-emitting direction of the emitted light is unidirectionally emitted in the forward direction; or wherein the LED light distribution emission structure is symmetrically provided at the left and right side parts of the top of the road stud, respectively, and the said part is a structure in which the main light-emitting direction of the emitted light is bidirectionally emitted in the forward direction and the backward direction, or the left and right side parts of the top of the road stud are provided with a structure in which the main light-emitting direction of the emitted light is unidirectionally emitted in the forward direction. 24. A luminous road stud with an LED light distribution structure according to claim 1, characterized in that: a long afterglow light emitting body which can be excited by LED light is also arranged in the receiving groove of the transparent shell (1), thereby forming a luminous road stud with a long afterglow light emitting function. 25. A light-emitting road stud with an LED light distribution structure according to claim 1 according to claim 23, characterized in that: a solar photovoltaic component is also provided in the accommodation cavity between the front and rear LED light distribution structures of the transparent shell (1), the solar photovoltaic component is connected to a control circuit, and the control circuit is also connected to the LED light-emitting body (2) and the energy storage element through lines respectively; The solar photovoltaic assembly, LED light emitter (2), control circuit and energy storage element are packaged in a transparent housing (1) by packaging glue or fasteners to form a solar light-emitting road stud; Alternatively, the solar photovoltaic assembly, LED light emitter (2), control circuit and energy storage element are encapsulated in a transparent shell (1) by encapsulating glue or fasteners to form a light-emitting inner shell with an LED light distribution structure, and the light-emitting inner shell and the protective shell (5) are combined by encapsulating glue or fasteners to form a solar light-emitting road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top portion of the transparent shell (1) is exposed. 26. A light-emitting road stud with an LED light distribution structure according to claim 1 according to claim 23, characterized in that: the LED light-emitting body (2) is electrically connected to the outside through an external wire; the LED light-emitting body (2) and other accessories are packaged in a transparent shell (1) through packaging glue or fasteners to form an active light-emitting road stud; or the LED light-emitting body (2) and other accessories are packaged in a transparent shell (1) through packaging glue or fasteners to form a light-emitting inner shell with an LED light distribution structure, and the light-emitting inner shell and the protective shell (5) are combined through packaging glue or fasteners to form an active light-emitting road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top part of the transparent shell (1) is exposed; Alternatively, a long afterglow luminous body that can be excited by LED light is also provided in the receiving groove of the transparent shell (1), and the LED luminous body (2) is electrically connected to the outside via an external wire; the LED luminous body (2), the long afterglow luminous body and other accessories are packaged in the transparent shell (1) via packaging glue or fasteners to form an active light-emitting road stud with a long afterglow luminous function; or the LED luminous body (2), the long afterglow luminous body and other accessories are packaged in the transparent shell (1) via packaging glue or fasteners to form a light-emitting inner shell with an LED light distribution structure and a long afterglow luminous function, and the light-emitting inner shell and the protective shell (5) are combined via packaging glue or fasteners to form an active light-emitting road stud with a long afterglow luminous function, in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top portion of the transparent shell (1) is exposed. 27. A light-emitting road stud with an LED light distribution and emission structure according to claim 1 according to claim 23, characterized in that a metal protective pressure cover is provided above the LED light distribution and emission structure, or a protective body is provided around the LED light distribution and emission structure. 28. A luminous road stud with an LED light distribution structure according to claim 1 according to claim 23, characterized in that a retroreflector is also provided on the transparent shell (1) or the protective shell (5) to form a luminous reflective road stud. 29. The solar luminous road stud according to claim 25 is characterized in that: the transparent shell (1) is a transparent shell with opposite front and rear inclined surfaces, symmetrical in front and back and left and right, and with a generally rectangular top; the solar photovoltaic component is arranged in the middle of the top shell of the transparent shell (1); the left and right sides of the solar photovoltaic component are symmetrically provided with mounting grooves with an inverted U-shaped cross section; the LED light-emitting body (2) is arranged below the reflecting surface (1a) of the mounting groove with an inverted U-shaped cross section, forming an LED light distribution structure in which the main light-emitting direction of the emitted light is along the forward direction of the road stud, or along the forward and backward directions of the road stud; the front and rear inclined surfaces of the transparent shell (1) are also provided with retroreflectors, and the accommodating cavity of the transparent shell (1) is also provided with a control circuit and a storage The solar photovoltaic component, the LED light emitter (2) and the energy storage component are respectively connected to the control circuit through lines; the solar photovoltaic component, the LED light emitter (2), the control circuit and the energy storage component are encapsulated in a transparent shell (1) through encapsulation glue or fasteners to form a raised solar light-emitting reflective road stud, or the solar photovoltaic component, the LED light emitter (2), the control circuit and the energy storage component are encapsulated in a transparent shell (1) through encapsulation glue or fasteners to form a light-emitting inner shell with an LED light distribution structure, and the light-emitting inner shell and the protective shell (5) with a slope on the side are combined through encapsulation glue or fasteners to form a raised solar light-emitting reflective road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top of the transparent shell (1) is partially exposed. 30. The solar luminous road stud according to claim 25 is characterized in that: the transparent shell (1) is a luminous inner shell with a raised top, and the forward and reverse sides of the raised top are provided with forward and reverse opposite inclined surfaces, and the solar photovoltaic component is arranged below the middle part of the top shell of the luminous inner shell; the front and rear sides of the solar photovoltaic component are provided with a mounting groove with an inverted U-shaped cross section and facing the above-mentioned forward and reverse inclined surfaces, and the LED light-emitting body (2) is a plurality of LEDs arranged in a linear array and arranged below the reflective surface (1a) of the mounting groove with an inverted U-shaped cross section, so as to form an LED light distribution structure in which the main light-emitting direction of the emitted light is along the forward direction of the road stud, or along the forward and reverse directions of the road stud; the transparent A control circuit and an energy storage element are also provided in the accommodating cavity of the shell (1); the solar photovoltaic assembly, the LED light emitter (2) and the energy storage element are respectively connected to the control circuit via lines; the solar photovoltaic assembly, the LED light emitter (2), the control circuit and the energy storage element are encapsulated in the transparent shell (1) by encapsulating glue to form an illuminating inner shell with an LED light distribution structure; the protective shell (5) is composed of a metal bottom shell with an upwardly opened cavity and a top cover with an opening in the middle; the illuminating inner shell is locked in the protective shell (5) and combined by encapsulating glue or fasteners to form an underground solar illuminating road stud in which the illuminating inner shell is partially surrounded by the protective shell (5) and the top portion of the transparent shell (1) is exposed. 31. The active light-emitting road stud according to claim 26 is characterized in that: the transparent shell (1) is a light-emitting inner shell with a raised top, and the forward and backward sides of the raised top are provided with forward and backward opposite inclined surfaces; the front and rear sides below the top shell of the light-emitting inner shell are provided with a placement groove with a cross section in the shape of an inverted U and facing the forward and backward inclined surfaces, and the LED light-emitting body (2) is a plurality of LEDs arranged in a linear array and arranged below the reflective surface (1a) of the placement groove with a cross section in the shape of an inverted U, so that the main light-emitting direction of the emitted light is along the forward direction of the road stud, or along the forward and backward directions of the road stud. The LED light emitting body (2) is electrically connected to the outside through an external wire; the LED light emitting body (2) and other accessories are encapsulated in a transparent shell (1) through encapsulation glue or fasteners to form a light emitting inner shell with an LED light emitting structure; the protective shell (5) is composed of a metal bottom shell with an upwardly opened cavity and a top cover with an opening in the middle; the light emitting inner shell is locked in the protective shell (5) and combined through encapsulation glue or fasteners to form an underground active light emitting road stud in which the light emitting inner shell is partially surrounded by the protective shell (5) and the top portion of the transparent shell (1) is exposed. 32. The active light-emitting road stud according to claim 26, characterized in that: the transparent shell (1) is a transparent shell with a symmetrical wide cross shape at the top; the LED light-emitting body (2) and other accessories are packaged in the transparent shell (1) by packaging glue or fasteners to form a light-emitting inner shell with LED light distribution emission structures on the left and right sides, and the main emission direction of the emitted light is forward and backward; the protective shell (5) is composed of a metal bottom shell with an upward cavity and a symmetrical top cover with an upward convex protective body and a wide cross-shaped opening in the middle; the light-emitting inner shell is locked in the protective shell (5) and combined by packaging glue or fasteners to form a solar light-emitting road stud or active light-emitting road stud in which the light-emitting inner shell is partially surrounded by the protective shell (5) and the top of the transparent shell (1) is partially exposed.