KR102622145B1 - Lamp for vehicle - Google Patents

Abstract

The present invention relates to a vehicle lamp, comprising: at least one light source; at least one optical member that irradiates light generated from the light source forward; It is disposed in front of the optical member and includes a light transmission module that irradiates light from the optical member to the outside to form a light distribution pattern, wherein the light projection module transmits the light irradiated from the optical member. 1 optical body; a shield portion that passes some of the light and blocks some of the light transmitted through the first optical body; A second optical body transmits the light passing through the shield and irradiates it to the outside, wherein the shield guides some of the light blocked by the shield to another path to the outside through the second optical body. Let it be investigated.

Description

Lamp for vehicle

The present invention relates to a vehicle lamp, and more specifically, to a vehicle lamp that can improve light distribution efficiency by allowing light blocked by a shield to be irradiated forward.

In general, vehicles are equipped with various types of lamps that have a lighting function to easily identify objects located around the vehicle when driving at night and a signaling function to inform other vehicles or road users of the vehicle's driving status.

For example, head lamps and fog lamps mainly for lighting purposes, and turn signal lamps, tail lamps, and brake lamps for signaling purposes. It is equipped with brake lamps, side markers, etc., and the installation standards and specifications for these vehicle lamps are regulated by law to ensure that each function is fully exercised.

These lamps provide identification to drivers at night by emitting light to the outside as the light emitted from the light source is irradiated forward, or provide identification to other vehicle drivers or pedestrians by emitting light.

Among vehicle lamps, headlamps play a very important role in safe driving by forming a low beam pattern or high beam pattern to ensure the driver's forward vision when driving in a dark environment such as at night. is doing

These vehicle headlamps may be provided as a single lamp module, with a headlamp that selectively forms a low beam pattern or a high beam pattern depending on the operation of the shield unit, and a headlamp that forms a low beam pattern and a headlamp that forms a high beam pattern. In some cases, headlamps are provided as separate lamp modules.

Vehicle headlamps mainly maintain a low beam pattern in normal times to prevent dazzling drivers of oncoming vehicles traveling in the opposite direction or drivers of vehicles ahead, and are required when driving at high speeds or when driving in places with low ambient light. Accordingly, a high beam pattern is formed to promote safe driving.

In such conventional vehicle headlamps, there were limitations in designing the overall size of the lamp module compactly as the light source, reflector, shield member, and lens were arranged at regular intervals. Accordingly, recently, micro optical systems have been applied to improve the light source, reflector, and lens. By reducing the spacing between the shield member and the micro-optical system, a vehicle headlamp capable of a compact design has been provided.

However, recently provided vehicle headlamps using a micro-optical system have a problem of poor light distribution efficiency due to light loss occurring as light is blocked by a shield member when forming a low beam pattern.

U.S. Patent Publication No. 2016-0265733 (2016.09.15.)

The present invention was developed with an eye on the above-mentioned problems, and the technical problem to be solved by the present invention is to guide the light blocked by the shield part of the upper row to the lower row so that the light can be irradiated to the outside when applied to a micro optical system. By doing so, a vehicle lamp that can improve light distribution efficiency by reducing light loss is provided.

The problems of the present invention are not limited to the problems mentioned above, and other problems not mentioned will be clearly understood by those skilled in the art from the description below.

A vehicle lamp according to an embodiment of the present invention for solving the above problems includes at least one light source; at least one optical member that irradiates light generated from the light source forward; It is disposed in front of the optical member and includes a light transmission module that irradiates light from the optical member to the outside to form a light distribution pattern, wherein the light projection module transmits the light irradiated from the optical member. 1 optical body; a shield portion that passes some of the light and blocks some of the light transmitted through the first optical body; A second optical body transmits the light passing through the shield and irradiates it to the outside, wherein the shield guides some of the light blocked by the shield to another path to the outside through the second optical body. It can be investigated.

In this case, the first optical body has a plurality of micro lenses each having a focus in the form of an array, and the second optical body has a plurality of micro lenses each having a focus in the form of an array. Each micro lens corresponds to each micro lens of the second optical body, and the corresponding pair of micro lenses may share a focus with each other.

In addition, the shield unit includes at least one shield member, wherein the shield member is disposed in front of at least one of the plurality of micro lenses of the first optical body, and the edge of the shield member is located at the focal point. You can.

Here, the shield member may be formed with a first reflection part to reflect light blocked by the shield member to another shield member.

Additionally, the shield member may include a second reflection portion extending from the edge.

In addition, the first reflector may form an elliptical reflection surface, and the first reflector formed on the one shield member forms a first focus at an arbitrary point on the light path emitted from the first optical body, A second focus may be formed on the second reflection portion of the other shield member.

Additionally, in the plurality of shield members, among the light blocked by the shield members in the upper row, the light reflected by the first reflector is reflected by the second reflector formed in the shield member in the lower row and then irradiated to the outside. It can be.

Meanwhile, the at least one light source is arranged in plural numbers to correspond to each of the plurality of micro lenses of the first optical body, and each light source may be individually controlled to be turned on or off.

Other specific details of the invention are included in the detailed description and drawings.

According to the vehicle lamp according to an embodiment of the present invention, when a micro optical system is applied, light blocked by the shield part of the upper row is guided to the lower row and irradiated to the outside, thereby minimizing light loss and improving light distribution efficiency. The effect can be provided.

The effects according to the present invention are not limited to the contents exemplified above, and further various effects are included in the present specification.

1 is a perspective view of a vehicle lamp according to an embodiment of the present invention.
Figure 1 is a rear perspective view of Figure 2.
Figures 3a and 3b are enlarged perspective views of the shield portion in Figure 1.
Figure 4 is a side view of Figure 1.
Figure 5 is a side view schematically showing the light irradiation path of a vehicle lamp according to an embodiment of the present invention.
Figure 6 is a partial enlarged view of Figure 5.
7 and 8 are side views showing a state in which a plurality of light sources and optical members are arranged in a vehicle lamp according to embodiments of the present invention.
FIG. 9 is a side view schematically showing the configuration of a vehicle lamp capable of performing a bi-function function with the shield portion excluded from some columns in FIG. 8.
Figure 10 is a perspective view of a vehicle lamp according to another embodiment of the present invention with the optical member excluded.
Figure 11 is a front view of the light transmitting module in Figure 10.
Figure 12 is a front view showing the shape of a light transmitting module that can be configured in different shapes in a vehicle lamp according to another embodiment of the present invention.

The advantages and features of the present invention and methods for achieving them will become clear by referring to the embodiments described in detail below along with the accompanying drawings. However, the present invention is not limited to the embodiments disclosed below and may be implemented in various different forms. The present embodiments are merely provided to ensure that the disclosure of the present invention is complete and to provide common knowledge in the technical field to which the present invention pertains. It is provided to fully inform those who have the scope of the invention, and the present invention is only defined by the scope of the claims. Like reference numerals refer to like elements throughout the specification.

Accordingly, in some embodiments, well-known process steps, well-known structures, and well-known techniques are not specifically described in order to avoid ambiguous interpretation of the present invention.

The terms used in this specification are for describing embodiments and are not intended to limit the invention. As used herein, singular forms also include plural forms, unless specifically stated otherwise in the context. As used in the specification, "comprises" and/or "comprising" means not excluding the presence or addition of one or more other components, steps and/or operations other than the mentioned components, steps and/or operations. Use it as And, “and/or” includes each and every combination of one or more of the mentioned items.

Additionally, embodiments described in this specification will be described with reference to perspective views, cross-sectional views, side views, and/or schematic diagrams that are ideal illustrations of the present invention. Accordingly, the form of the illustration may be modified depending on manufacturing technology and/or tolerance. Accordingly, embodiments of the present invention are not limited to the specific form shown, but also include changes in form produced according to the manufacturing process. Additionally, in each drawing shown in an embodiment of the present invention, each component may be shown somewhat enlarged or reduced in consideration of convenience of explanation.

Hereinafter, preferred embodiments of a vehicle lamp according to the present invention will be described in detail based on the attached illustration drawings.

FIG. 1 is a perspective view of a vehicle lamp according to an embodiment of the present invention, FIG. 1 is a rear perspective view of FIG. 2, FIGS. 3A and 3B are enlarged perspective views of the shield portion in FIG. 1, and FIG. 4 is a side view of FIG. 1.

Referring to FIGS. 1 to 4 , a vehicle lamp 100 according to an embodiment of the present invention may include at least one light source 110, an optical member 120, and a light projection module 200.

At least one light source 110 has a color temperature of about 5500K, which is close to sunlight, which minimizes fatigue on the human eyes. Not only does it increase the design freedom of the lamp by minimizing its size, but it is also economical due to its semi-permanent lifespan. Light emitting diodes may be applied.

For reference, in the case of the vehicle lamp 100 according to an embodiment of the present invention, the use of a light emitting diode as the light source 110 will be described as an example, but this is only an example and is not limited thereto. Various types of light sources such as bulbs or laser diodes may be applied.

The optical member 120 may be a reflector disposed in the light emission direction of the light source 110 and performing the function of reflecting the light emitted from the light source 110 to the light projection module 200. In this case, the reflection of the reflector As the slope 122 is formed in a parabolic shape, light emitted from the light source 110 can be reflected in various directions.

The light projection module 200 is disposed in front of the optical member 120 and the light source 110 and is disposed in a direction opposite to the light emission direction of the light source 110, and includes a first optical body 210 and a shield portion ( 230) and the second optical body 220 may be arranged in a sequentially arranged structure.

The first optical body 210 includes a plurality of micro lenses 212 arranged in an array, and a second optical body disposed between the first optical body 210 and the shield portion 230. (220) Additionally, a plurality of micro lenses 222 may be arranged in an array form.

At this time, the micro lenses 212 of the first optical body 210 and the micro lenses 222 of the second optical body 220 are formed in numbers corresponding to each other, and each micro lens 212 , one micro lens 222 may be formed to correspond.

That is, light incident through one micro lens 212 can be emitted through a corresponding micro lens 222.

In this case, the micro lenses 212 of the first optical body 210 each have a focus, the micro lenses 222 of the second optical body 220 also each have a focus, and the micro lenses 212 and 222 corresponding to each other have a focus. You can share focus (C).

In the vehicle lamp according to the embodiment of the present invention, as the reflector is provided as the optical member 120, it has been described as an example that the arrangement order is arranged in the order of the optical member, the light source, and the light projection module. However, this is in one embodiment. However, a collimator lens may be provided as an optical member.

That is, when a collimator lens is provided, the functions of reflection and light collection can be performed through the collimator lens, so in this case, the light source, collimator lens, and light projection module may be arranged in that order.

For reference, in the drawing to support the embodiment of the present invention, the micro lenses 212 of the first optical body 210 are formed in three rows horizontally and five rows vertically, and the micro lenses 212 of the second optical body 220 are formed in three rows horizontally and five rows vertically. The lens 222 is also shown as an example of being formed in three rows horizontally and five rows vertically, but this is only an example to aid understanding of the present invention, and the arrangement may be formed differently depending on the array shape. Accordingly, the number of each micro lens 212 and micro lens 222 may be added or subtracted.

A shield portion 230 including a plurality of shield members 232 may be disposed between the first optical body 210 and the second optical body 220.

Here, the shield part 230 is arranged in an array form corresponding to the micro lens 212 of the first optical body 210 and the micro lens 212 of the second optical body 220, so that the shield member 232 can be arranged in corresponding numbers.

For example, as shown in the drawing supporting an embodiment of the present invention, the micro lenses 212 of the first optical body 210 are formed in three rows horizontally and five rows vertically, and the second optical body 220 When the micro lenses 222 are formed in 3 rows horizontally and 5 rows vertically, the plurality of shield members 232 forming the shield portion 230 are also connected to the micro lenses 212 of the first optical body 210 and the second optical body 210. 2 It may be arranged in an array form corresponding to the micro lens 222 of the optical body 220.

For reference, in the vehicle lamp according to an embodiment of the present invention, the shield member 232 of the shield portion 230 is connected to the micro lens 212 of the first optical body 210 to selectively form a low beam pattern or a high beam pattern. ) and may not be arranged in the number corresponding to the micro lenses 222 of the second optical body 220, but may be arranged only in some parts.

A plurality of shield members 232 forming this shield portion 230 may be formed so that a portion of the upper surface has a step to form a cut-off line CL, and thus a vehicle lamp according to an embodiment of the present invention ( 100) can form a low beam pattern with a cut-off line.

The first optical body 210 performs the function of forming a focus C by passing the light reflected by the optical member 120, and of the light passing through the focus C, some of the light is transmitted through the shield unit ( It passes through the cut-off line of 230 and passes through the second optical body 220, and some of the other light is blocked by the shield portion 230.

Here, the focus C may be formed near the edge of the shield portion 230.

At this time, one side of the shield portion 230, that is, the side facing the first optical body 210, has a first reflection concave in an oval shape to reflect the blocked light toward the shield portion 230 in the lower row. A portion 234 may be formed.

The first reflection part 234 formed in each shield member 232 of the shield part 230 has a shape whose cross-sectional area increases from the top to the bottom, and the depth in the rear direction becomes deeper as it goes from the top to the bottom. You can.

Here, a first focus C1 is formed in the first reflector 234 at a random point on the path of light irradiated from the micro lens 212 of the first optical body 210 and blocked by the shield member 232. You can.

Accordingly, the light reflected at or near the first focus C1 formed in the first reflector 234 of the shield unit 230 is reflected on the back of the first reflector formed in the shield unit 230 in the lower row. It is possible to gather at the second focus C2 formed near the second reflection portion 236 that protrudes and forms the outer surface, which will be described in detail later with reference to FIGS. 5 and 6.

Meanwhile, in the vehicle lamp 100 according to an embodiment of the present invention, the light source 110 may be disposed between the optical member 120 and the light projection module 200, and the light source 110 may be oriented in the direction of the optical member 120. Light is emitted, and the light reflected by the optical member 120 may pass through the light projection module 200 and be irradiated to the outside.

Accordingly, the optical member 120, the light source 110, and the light projection module 200 can be arranged at narrow intervals, making it possible to design a compact headlamp.

Figure 5 is a side view schematically showing the light irradiation path of a vehicle lamp according to an embodiment of the present invention, and Figure 6 is a partial enlarged view of Figure 5.

Referring to FIGS. 5 and 6 , when the light source 110 is turned on to emit light, the emitted light is reflected by the reflective surface 122 of the optical member 120 and then heads toward the light projection module 200. do.

At this time, the light reflected by the optical member 120 first passes through each micro lens 212 of the first optical body 210 forming the light transmission module 200 and is collected at the focus C, and ), some of the light L1 passes through the cut-off line of the shield portion 230, passes through each micro lens 222 of the second optical body 220, and is then irradiated to the outside. do.

Meanwhile, among the light passing through the focus C, some of the light is blocked by the first reflection part 234 of the shield part 230 and does not pass through the cut-off line. At this time, the shield part 230 Among the light blocked by the light L2, some of the light L2 is reflected at or near the first focus C1 formed on the reflective surface forming the inner surface of the first reflector 234 and is reflected at the shield part ( 230).

Accordingly, the light directed toward the shield part 230 in the lower row is reflected at or near the second focus C2 formed in the second reflection part 236 of the shield part 230 disposed in the lower row, thereby generating the second optical signal. Irradiation can be conducted to the outside by penetrating the sieve 220.

At this time, as the reflective surface forming the inner surface of the first reflector 234 is designed to have an oval shape, it is gathered at the second focus C2 of the second reflector 236, and accordingly, the second focus C2 Alternatively, the amount of light reflected near the second focus may increase.

As described above, among the light passing through the micro lens 212 of the first optical body 210 forming the upper horizontal row, the light passing through the cut-off line of the shield portion 230 is the first optical body 212 forming the upper horizontal row. 2 When irradiated to the outside through the micro lens 222 of the optical body 220, some of the light blocked by the shield portion 230 is transmitted to the micro lens of the second optical body 220 forming the lower horizontal row ( 222), the irradiation is transmitted to the outside, thereby reducing light loss and ultimately greatly improving light distribution efficiency.

For reference, in Figure 5, the light reflected by the optical member 120 is shown as an optical path only when it passes through the first row of the micro lenses 212 of the first optical body 210, but this is not the case in the present invention. To aid understanding, it is obvious that all heat of the micro lens 212 of the first optical body 210 passes through and performs the same function.

On the other hand, the vehicle lamp 100 according to an embodiment of the present invention includes a first optical body 210 in which a plurality of micro lenses 212 are formed across a plurality of horizontal rows and a plurality of vertical rows, and a plurality of micro lenses 222 ), it may be difficult to distribute light uniformly as a single light source.

Accordingly, by increasing the number of light sources 110a and 110b and optical members 120a and 120b as necessary, improved light distribution efficiency can be achieved.

For example, as shown in FIG. 7, the number of light sources 110a and optical members 120a can be arranged as two across the top and bottom, and as shown in FIG. 8, the micro lens 212 and the micro lens The light source 110b and the optical member 120b may be arranged in a horizontal row corresponding to the same horizontal row as 222.

In particular, as shown in FIG. 8, each light source 110b is located in a horizontal row corresponding to the same horizontal row as the micro lens 212 of the first optical body 210 and the micro lens 222 of the second optical body 220. ) is disposed, and each optical member 120b, which is a reflector having an oval-shaped reflective surface, is disposed to reflect the light generated from each light source 110b forward, the first focus of the optical member 120b A light source may be placed on (F1).

In addition, a second focus F2 is formed on an arbitrary optical path between the optical member 120b and the first optical body 210, and this second focus F2 is located near the edge of the shield member 232. It may be shared with the focal point C formed at the rear of the micro lens 212 of the first optical body 210.

Accordingly, referring once again to FIG. 8, the light generated from the light source 110b located at the first focus F1 is reflected by the optical member 120b and passes through the second focus F2, and then passes through the second focus F2. 2 The light passing through the focus (F2) passes through the corresponding micro lens 212 of the first optical body 210, and the light passing through the micro lens 212 passes through the focus (C) again and then passes through the second optical body 210. By passing through the corresponding micro lens 222 of the optical body 220 and irradiating to the outside, a low beam pattern can be formed (L1).

In addition, in this case, the process of irradiating the light L2, which is blocked by the shield part 230 and reflected by the second reflection part 236 of the shield part 230 in the lower row, is the same as described above, so Repeated explanations will be omitted.

Meanwhile, as described above, when a plurality of light sources 110a and optical members 120a are provided, low beam patterns and high beam patterns can be selectively distributed by individually turning on or off the light sources 110a. .

For example, as shown in FIG. 9, the shield part 230 is disposed in some upper rows, the shield part 230 is excluded from some lower rows, and the shield part 230 is disposed in the rows in which the shield part 230 is arranged. A low beam pattern or a high beam pattern can be selectively distributed by individually controlling the turning on or off of the light sources 110b and the light sources without the shield portion.

That is, the light source 110b in the row in which the shield part 230 is placed is controlled to turn on, and the light source 110b in the row in which the shield part 230 is not placed is controlled to turn off, so that the light distribution of the low beam pattern is formed, or the light source 110b in the row in which the shield part 230 is not placed is controlled to turn on. By controlling the light sources 110b to turn on, the light distribution of the high beam pattern can be formed by the light L3 that passes through the second optical body 220 without being blocked by the shield part.

In this case, among the rows in which the shield unit 230 is disposed, the shield unit 240 located at the bottom has a configuration of a first reflection unit for reflecting the blocked light to the row below, as shown in FIG. 9. Alternatively, only a separate reflection part 242 may be formed so that the light reflected after being blocked by the shield part 230 in the row immediately above is irradiated forward.

In addition, as described above, the vehicle lamp according to an embodiment of the present invention forms a light distribution pattern through a first optical body having a plurality of micro lenses and a second optical body having a plurality of micro lenses, As in the embodiments, the first optical body and the second optical body can be arranged in various shapes that deviate from the standardized shape.

For example, as shown in FIGS. 10 and 11, a first optical body 210a is provided in which the micro lenses 212a constituting the light transmission module 220a are arranged in an L-shape, and the micro lenses 222a ) In addition, design freedom can be improved by providing a second optical body 220 arranged in an L-shape.

Of course, in this case, the shield portion 230a can also be arranged in the same arrangement between the first optical body 210a and the second optical body 220a, and the optical members can also be arranged in the same arrangement.

As described above, the design of the first optical body and the second optical body can be changed into various shapes, so that the micro lens 212a of the first optical body 210b and the second optical body as shown in FIG. 12 The micro lens 222b of 220b can be arranged in various designs, such as a star shape.

Those skilled in the art to which the present invention pertains will understand that the present invention can be implemented in other specific forms without changing its technical idea or essential features. Therefore, the embodiments described above should be understood in all respects as illustrative and not restrictive. The scope of the present invention is indicated by the claims described below rather than the detailed description above, and all changes or modified forms derived from the meaning and scope of the claims and their equivalent concepts should be construed as being included in the scope of the present invention. do.

100: vehicle lamp
110, 100a, 100b: light source
120,120a,120b: Optical member
200,200a: Light emitting module
210,210a,201b: first optical body
212,212a,212b: Micro lens
220,220a,220b: second optical body
222,222a,222b: Micro lens
230,230a: Shield part
232: Shield member
234: first reflection unit
236: second reflection unit
C1: first focus
C2: second focus

Claims (9)

at least one light source;
at least one optical member that irradiates light generated from the light source forward;
It is disposed in front of the optical member and includes a light transmission module that irradiates light from the optical member to the outside to form a light distribution pattern,
The light transmitting module is,
a first optical body that transmits light emitted from the optical member;
a shield portion that passes some of the light and blocks some of the light transmitted through the first optical body;
It includes a second optical body that transmits the light passing through the shield unit and irradiates it to the outside,
The shield part,
Some of the light blocked by the shield is guided to another path to be irradiated to the outside through the second optical body,
Each of the first optical body and the second optical body,
A plurality of microlenses with a focus form an array,
Each micro lens of the first optical body corresponds to each micro lens of the second optical body,
The corresponding pair of microlenses share a focus with each other,
The shield part,
Includes a plurality of shield members,
Each of the plurality of shield members,
It is disposed in front of a corresponding micro lens among the plurality of micro lenses of the first optical body, and an edge of each of the plurality of shield members is located at the focal point,
Each of the plurality of shield members,
a first reflection unit for reflecting the blocked light to another shield member; and
It includes a second reflection portion extending from the edge,
The light reflected by the first reflector among the light blocked by the shield member in the upper row among the plurality of shield members is reflected by the second reflector formed in the shield member in the lower row and then irradiated to the outside, a vehicle lamp. . delete delete delete delete According to clause 1,
A lamp for a vehicle, wherein the first reflector forms an oval-shaped reflective surface. According to clause 1,
A first reflection portion formed on each of the plurality of shield members,
Forming a first focus at an arbitrary point on the light path emitted from the first optical body,
A lamp for a vehicle, forming a second focus on the second reflector of the other shield member. delete According to clause 1,
The at least one light source is,
A plurality of micro lenses are arranged to correspond to each of the plurality of micro lenses of the first optical body,
A vehicle lamp in which each light source can be individually controlled to turn on or off.

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