CN106609919A - Illuminating device - Google Patents

Abstract

The invention belongs to the field of lighting, and discloses a lighting device, comprising: a first light-emitting element installed in the center of a substrate in such a way that the light-emitting surface faces the front of the lighting device, and is used to guide the emitted light of the first light-emitting element to the lighting The first light control component at the front of the device, the light-transmitting component disposed in a manner surrounding the outer edge of the substrate and extending toward the front of the lighting device, and disposed on the substrate in a manner surrounding the first light-emitting element a plurality of second light-emitting elements. The lighting device of the present invention is a lighting device capable of controlling and adjusting front and side illumination respectively.

Description

lighting device

technical field

The invention relates to a lighting device with light-emitting elements such as LEDs.

Background technique

In the field of lighting, because LEDs have better performance in terms of power saving and longer service life, LEDs are gradually replacing existing halogen bulbs.

Due to the single-sided light-emitting characteristic of LEDs, compared with existing halogen lamps, LED lighting devices generally have inferior side-light emitting effects to halogen lamps. However, in some occasions, for example, when it is necessary to create an atmosphere or need to observe the light from the side of the light source and other lighting requirements for special occasions, LED lighting devices are required to also achieve side light leakage and lighting. In this regard, the prior art proposes to use a lens to guide part of the light emitted by the LED to the side, and to use a light-transmitting side portion to obtain a certain side lighting effect (for example, refer to Patent Document 1). As another example, it is also proposed to provide openings or slits on the heat sink of the lighting device, so that the part of the point light source that emits light from the front side leaks from the side for side lighting (for example, refer to Patent Document 2).

prior art literature

patent documents

Patent Document 1: CN102449378A

Patent Document 2: CN102282412A

However, the above-mentioned LED lighting devices that use lenses to change the direction of outgoing light or add openings or slits to leak light from the side only use part of the light leaked naturally from the front light source, and cannot provide independent side lighting and independent side lighting. Luminous brightness control, and the problem of separate control and adjustment of side lighting and front lighting cannot be realized.

Therefore, the purpose of the present invention is to provide a lighting device that can realize independent side lighting and brightness control, and can control and adjust front and side lighting separately.

Invention content and effect

In order to achieve the above object, the present invention provides a lighting device, comprising:

a first light-emitting element installed in the center of the substrate with the light-emitting surface facing the front of the lighting device,

a first light control component for guiding the emitted light of the first light-emitting element to the front of the lighting device,

a cylindrical or bowl-shaped light-transmitting member arranged around the outer edge of the substrate and extending toward the front of the lighting device, and

A plurality of second light emitting elements disposed on the substrate in a manner to surround the first light emitting element.

Thus, the present invention simultaneously arranges the first light-emitting element and the second light-emitting element surrounding the first light-emitting element on the substrate, the light emitted by the first light-emitting element is directed to the front of the lighting device through the first light control component, and the second light-emitting element The light emitted by the light-emitting element passes through the light-transmitting member and is emitted to the side of the lighting device, so that in one lighting device, light sources for front and side lighting can be provided respectively, and independent side lighting can be realized.

In the lighting device of the present invention, further, the second light-emitting element is mounted on the substrate in such a manner that the light-emitting surface faces the translucent member. By making the light-emitting surface of the first light-emitting element face the front of the lighting device, and installing the second light-emitting element in such a way that the light-emitting surface faces the light-transmitting member, the second light-emitting element can be realized without other auxiliary light-guiding structures or reflective structures. The purpose of the light passing through the light-transmitting component to irradiate the side of the lighting device can further reduce the number of components, simplify the structure, and reduce the cost.

In the lighting device of the present invention, further, there is a second light control component arranged corresponding to the second light-emitting element, which is used to guide the emitted light of the second light-emitting element to the light-transmitting component, so as to achieve for the purpose of side irradiation. In order to reduce the installation process and installation cost, when the light-emitting surface of the second light-emitting element and the light-emitting surface of the first light-emitting element are installed to be the same, that is, when they are both facing the front of the lighting device, the second light-controlling component can be used to control the light-emitting surface of the second light-emitting element. The light emitted by the light-emitting element is guided to the side of the lighting device, thereby realizing independent side lighting with low installation cost of the light-emitting element.

In the lighting device of the present invention, further, there is a cylindrical or bowl-shaped heat dissipation case provided around the outer side of the light-transmitting member, which is composed of a bottom and a side surface. On the side surface of the heat dissipation case, a window portion is provided corresponding to the light-transmitting member for guiding the emitted light of the second light emitting element to the outside of the heat dissipation case. According to this structure, the illuminating device has a heat dissipation housing, and at the same time, a window portion for guiding the light emitted by the second light emitting element to the outside of the heat dissipating housing is provided on the side of the heat dissipating housing. At the same time, it also improves the heat dissipation performance of the first and second light emitting elements.

In the lighting device of the present invention, further, the heat dissipation housing may only have a bottom and no side parts, through the other side of the substrate opposite to the side where the first and second light-emitting elements are arranged, that is, the lower side of the substrate The connected heat sink is used as the bottom to realize the heat dissipation function, without the need of side parts, and the overall miniaturization of the lighting device is realized.

In the lighting device of the present invention, further, the heat dissipation housing may be made of metal material, opaque ceramic material or opaque resin material. The heat-dissipating shell is made of an opaque material. On the one hand, the brightness and the leading position of the light emitted by the second light-emitting element can be consciously controlled to the side of the lighting device. The material constitutes the heat dissipation shell, so as to simultaneously improve the heat dissipation performance of the lighting device.

In the lighting device of the present invention, further, the translucent member is formed integrally with the first light control member. By integrally forming the translucent member and the first light control member, the number of parts can be reduced and the manufacturing cost can be reduced.

In the lighting device of the present invention, further, the light-transmitting component is colorless or colored, so that more different lighting effects that meet the requirements of different lighting atmospheres can be obtained.

In the lighting device of the present invention, further, the outer surface of the light-transmitting member is smooth, or is provided with, for example, a pyramid-shaped or conical protrusion on the outer surface, so that when the lighting device is not lit, the The reflective area on the outer surface is larger, and the angle is more, so it has a shiny feeling.

In the lighting device of the present invention, further, the power of the first light-emitting element is greater than that of the second light-emitting element, and while the power of the first light-emitting element is designed to meet the main lighting requirements, the power of the first light-emitting element is lower than that of the first light-emitting element. The design of the second light-emitting element can provide auxiliary side lighting with the second light-emitting element of lower power while the first light-emitting element with higher power ensures the main lighting requirements, so as to provide the best matching lighting The lighting device with ambient performance can achieve better energy-saving effect.

In the lighting device of the present invention, there is a casing arranged around the outer edge of the substrate and extending toward the rear of the lighting device, and a lighting circuit accommodated in the casing, and the lighting circuit further has control and A first control circuit for adjusting the light emission of the first light-emitting element, and a second control circuit for controlling and adjusting the light emission of the second light-emitting element. Through the first and second control circuits, in the lighting device, the lighting, extinguishing and brightness adjustment of the first light-emitting element and the second light-emitting element can be controlled independently, so as to realize the switching of different lighting modes.

Description of drawings

Fig. 1 is a sectional view of the lighting device in the first embodiment of the present invention;

Fig. 2 is a schematic diagram of the installation of light-emitting elements of the lighting device in the first embodiment of the present invention; (a) represents a top view, and (b) represents a side view;

Fig. 3 is a preferred installation pattern diagram of the light-emitting element in the first embodiment of the present invention; (a) represents a top view, and (b) represents a side view;

Fig. 4 is a sectional view of the lighting device in the second embodiment of the present invention;

Fig. 5 is a sectional view of the lighting device in the third embodiment of the present invention;

Fig. 6 is a schematic view of the metal housing of the lighting device in the fourth embodiment of the present invention; (a) represents a side view, and (b) represents a top view;

Fig. 7 is a sectional view of the lighting device in the fourth embodiment of the present invention;

Fig. 8 is a cross-sectional view of the lighting device in the fifth embodiment of the present invention;

Fig. 9 is a sectional view of a lighting device in a sixth embodiment of the present invention.

detailed description

Hereinafter, embodiments of the present invention will be described with reference to the drawings.

[first embodiment]

Fig. 1 is a cross-sectional view showing the structure of an illuminating device in the first embodiment of the present invention, Fig. 2 is an installation pattern diagram of the light-emitting element in the first embodiment of the present invention, and Fig. 3 is a preferred installation of the light-emitting element in the first embodiment of the present invention pattern diagram. As shown in FIG. 1 , the main structure of the lighting device 1 includes a housing 2 , a light emitting part 3 , a cover 4 and a main lens 5 .

The casing 2 is made of an insulating material such as ceramics, and is composed of a substantially cylindrical side portion 6 and a bottom 7 closed at one end of the side portion. A lighting circuit 8 is accommodated in the inner space of the side portion 6 . The bottom 7 is connected to the lamp base structure 9, so that the lighting device 1 obtains power supply from an external power source through the lamp base structure 9 on the bottom of the housing.

As shown in FIG. 2 , the light emitting unit 3 is composed of a metal substrate 10 and LED light emitting elements 11 and 12 . The metal substrate 10 is produced by growing an insulating film such as resin on the upper surface of a metal base material such as copper, and then forming a wiring pattern on the insulating film. The wiring pattern is electrically connected to the lighting circuit 8 via wiring. The LED light emitting elements 11 and 12 are, for example, blue light emitting diodes, and are mounted on wiring patterns formed on the metal substrate 10 . The LED light-emitting element 11 installed at a substantially central position of the metal substrate 10 is used as a first light-emitting element for realizing frontal illumination to the front of the lighting device 1 . A plurality of LED light-emitting elements 12 are used as second light-emitting elements, arranged around the LED light-emitting element 11 and mounted on the same side of the metal substrate 10 as the LED light-emitting elements 11 , for irradiating to the side of the lighting device 1 .

The cover body 4 is a light-transmitting component of the lighting device 1, which includes a main body portion 4a that is basically arranged around the outer edge of the metal substrate 10 and extends toward the front of the lighting device 1, and an outlet for emitting light from the front of the LED light-emitting element 11. The emitted light is led out to the opening 4 b at the front of the lighting device 1 . The shape of the cover 4 is such that the outer periphery of the main body 4a gradually expands from the outer edge of the metal substrate 10 toward the edge of the opening 4b, and the expansion converges as it approaches the edge of the opening 4b, showing a roughly bowl shape. The emitted light from the LED light-emitting element 12 to the side is guided to the side of the lighting device 1 through the cover body 4a, and the emitted light from the LED light-emitting element 11 is emitted to the front of the lighting device 1 through the opening 4b of the cover. The cover body 4 can be made of translucent materials such as resin, glass, ceramics and the like.

The light-transmitting material can be resin, glass, ceramics, etc., and the light transmission distribution of the lighting device can also be adjusted by further processing the rough surface. In addition, the translucent material can be colorless or colored, for example, a color filter material is used to improve the decoration and colorfulness of the lighting device 1 .

The main lens 5 using a reflective lens is the first light control component of the lighting device 1 , which guides the light emitted from the LED light-emitting element 11 toward the front to the front of the lighting device 1 . During this process, the emitted light of the LED light emitting element 11 is mainly guided to the front of the lighting device 1 by the main lens 5 to form a forward lighting. In this embodiment, the front part of the illuminating device 1 is directly closed by the main lens 5 without additionally setting glass or other sealing parts made of light-transmitting materials on the front part.

The lighting device 1 of the present embodiment is attached to and used in an outlet installed in a commercial facility or the like. The light emitted by the LED light-emitting elements 11 is emitted from the opening 4b of the cover body 4 to the front of the lighting device 1 through the main lens 5 to form a forward illumination. The main body part 4a emits and realizes side irradiation. Therefore, in one illuminating device, light sources for frontal illumination and side illumination can be respectively provided, and independent side illumination independent of the frontal illumination light source can be realized.

Fig. 3 is a specific and preferred installation method of LED light-emitting elements of this embodiment. Specifically, as shown in Fig. The cover body 4 is installed on the metal substrate 10 respectively. Such an installation method can guide the light emitted by the LED light-emitting element 12a to the side of the lighting device 1 to the maximum extent without any other auxiliary light-guiding structure or reflective structure, so as to utilize the emitted light of the LED light-emitting element 12a more efficiently. . According to this preferred structure, the light from the LED light-emitting element 12a can pass through the main body 4a of the cover 4 and independently illuminate the side of the lighting device 1 , and has a simple structure, low cost and high efficiency.

Therefore, the lighting device 1 of this embodiment can provide light sources for frontal and side lighting in one lighting device, and realize independent side lighting that does not depend on the front lighting light source, so that it can be used in commercial facilities and other use environments. The lighting effects can be more diverse.

In addition, the metal substrate 10 is used in the light emitting part 3 of this embodiment, but the present invention is not limited thereto as long as the thermal conductivity can be ensured well. For example, other materials such as ceramic substrates may be used instead of metal substrates.

This embodiment exemplifies the case of using a blue light-emitting diode as a light-emitting element, but it is not limited thereto. The light-emitting part 3 may further include an illumination color control component, for example, an LED light-emitting element 11 or 12 is provided outside the LED light-emitting element 11 or 12. Silicone resin parts, which can be combined with LED light-emitting elements to obtain white, red and other colors of outgoing light.

In this embodiment, the case of using LED light-emitting elements as the first and second light-emitting elements is exemplified, but the present invention is not limited thereto. For example, the present invention may also be realized by using organic EL light-emitting elements.

In addition, in this embodiment, the case where a reflective lens is used as the main lens is described, but a cannonball lens, a convex lens or a Fresnel lens, and a combination of these lenses may also be used.

In addition, the main body portion 4a of the cover body 4 in this embodiment has translucency as a whole along the circumferential direction. Of course, the present invention is not limited thereto, and only a part of the circumferential direction may have translucency. In this way, it is possible to increase the amount of emitted light from this part, thereby further improving the specific decorativeness.

In this embodiment, the shape of the cover body 4 is substantially bowl-shaped, but as long as it can surround the light emitting part, the present invention is not limited thereto. For example, the outer circumference of the main body 4a may be in a cylindrical shape with a substantially constant diameter from the outer edge of the metal substrate 10 to the opening 4b, or in a trumpet shape in which the outer circumference of the main body 4a expands in a straight line, or in the main body 4a. The expansion mode of the outer periphery of is in the shape of a bowl whose curvature increases as it approaches the opening 4b. In addition, these methods can also be combined to achieve a more colorful appearance.

In this embodiment, it is illustrated that the number of LED light emitting elements 11 is one and the number of LED light emitting elements 12 is six. But in the present invention, there is no special limitation on the quantity of LED light emitting elements 11 and LED light emitting elements 12, the number of LED light emitting elements 11 can also be more than one, and the number of LED light emitting elements 12 can also be two, 3, 4, etc. In order to prevent the deviation of the light distribution, a plurality of LED light emitting elements 12 are arranged around the LED light emitting element 11 and arranged symmetrically along the circumferential direction.

[Second embodiment]

Fig. 4 is a cross-sectional view showing the structure of an illuminating device in a second embodiment of the present invention.

In this embodiment, the main structure of the lighting device 1 includes a housing 2 , a light emitting part 3 , a cover 4 , a main lens 5 and a secondary lens 13 . Except that the secondary lens 13 is further provided in this embodiment, other components and reference numerals are the same as those shown in FIG. 1 and FIG. 2 of the first embodiment, and will not be repeated here.

As shown in FIG. 4 , the sub-lens 13 is made of translucent resin such as PC resin or white resin such as PBT resin, and is arranged on the metal substrate 10 in such a manner that its main axis substantially overlaps the main axis of the main lens 5 . The secondary lens 13 is used as the second light control part of the lighting device 1. The light emitted by the LED light-emitting element 12 is partially refracted by the secondary lens 13 and then guided to the front of the lighting device 1. In addition, part of the emitted light from the LED light-emitting element 12 is guided to the front of the lighting device 1 by the secondary lens 12. After reflection, the lens 13 is guided to the main body 4 a of the cover 4 , and passes through the main body 4 a of the cover 4 to transmit to the side of the lighting device 1 , thereby realizing side illumination by the LED light emitting element 12 . By designing the transmittance of the sub-lens 13 , it is possible to adjust the ratio of the distribution of the emitted light from the LED light-emitting element 12 to the front and side of the lighting device 1 .

The arrows in FIG. 4 only show part of the light emitted by the LED light-emitting element 12 being guided to the main body 4 a of the cover 4 , and other parts such as being directed to the front of the lighting device 1 or others are not shown.

In this embodiment, the sub-lens 13 is provided, so the light-emitting surface of the LED light-emitting element 12 and the light-emitting surface of the LED light-emitting element 11 can be installed to be the same, that is, they both face the front of the lighting device 1 . The light emitted by the LED light-emitting element 12 is guided to the side of the lighting device 1 through the sub-lens 13 , so as to realize independent side light emission with relatively low cost of light-emitting element parts and installation process.

The sub-lens 13 as the second light control component shown in FIG. 4 is only an optional implementation, and is not limited to this shape, and lenses of other arbitrary shapes can also be used, or arranged corresponding to the LED light-emitting element 12. The light guide plate, reflector, reflector, and the like may be any structure that guides part or all of the emitted light from the LED light emitting element 12 to the main body 4 a of the cover 4 .

In this embodiment, the implementation of light guiding for multiple LED light-emitting elements 12 is given by setting a sub-lens 13 at the same time. Control components to guide light. Alternatively, a second light control component is selectively provided for some of the LED light emitting elements 12 to guide light.

[third embodiment]

Fig. 5 is a cross-sectional view showing the structure of an illuminating device in a third embodiment of the present invention.

In this embodiment, in the main structure of the illuminating device 1, except for the light-reflecting material layer 14 that is further provided in this embodiment and coated on the outer surface of the main lens 5, other components and reference signs of this embodiment It is the same as that shown in FIG. 1 and FIG. 2 of the first embodiment, and will not be repeated here.

In this embodiment, by coating the side of the main lens 5 opposite to the LED light-emitting element 12 with a light-reflecting material layer 14, the outgoing light emitted by the LED light-emitting element 12 is shown by the arrow in FIG. Reflected on the outer surface, it is guided to the main body portion 4a of the cover 4 to realize side irradiation.

In this embodiment, the light-reflecting material layer 14 is coated on the outside of the main lens 5, so the light-emitting surface of the LED light-emitting element 12 and the light-emitting surface of the LED light-emitting element 11 can be installed to be the same, that is, they both face the front of the lighting device 1 . The light emitted by the LED light-emitting element 12 can be guided to the side of the lighting device 1 after being reflected by the light-reflecting material layer 14 without passing through an additionally installed light-guiding component, so that the number of parts and the cost of the installation process are relatively low, And lighter weight and smaller volume to achieve independent side lighting.

[Fourth embodiment]

Fig. 7 is a cross-sectional view showing the structure of a lighting device in a fourth embodiment of the present invention.

In this embodiment, in the main structure of the lighting device 1, except that a metal housing 15 is further provided in this embodiment, the other components and reference signs of this embodiment are the same as those shown in Fig. 1 and Fig. 2 of the first embodiment. are the same and will not be repeated here.

As shown in FIG. 6 , the metal housing 15 is made of heat-dissipating material and is arranged around the outside of the cover 4 .

The metal housing 15 is used as a heat dissipation shell and plays a certain supporting role in the lighting device 1. It is formed into a bowl shape by the bottom 15a and the side parts 15b extending from the periphery of the bottom or otherwise matched with the cover body 4. shape. The material used for the metal housing 15 is not limited to metal materials such as aluminum, and opaque ceramic materials, opaque resin materials, or combinations of the above materials (such as multi-layer structures, etc.) can also be used. Generally, resin materials have lower thermal conductivity than metal materials or ceramic materials, but as long as the heat generated by the light emitting part is small, they can be sufficiently used as heat dissipation materials. In addition, among the resin materials, it is more preferable to use a resin with high thermal conductivity. On the bottom 15a in the metal housing 15, the light-emitting part 3 is fixed by a thermally conductive adhesive, and the main lens 5 is installed through the metal fitting 16 at the opening 15c of the metal housing 15. On the bottom 15a of the metal housing 15 The housing 2 is fixed on the outer surface by an adhesive. A window portion 17 is provided on the side portion 15 b of the metal housing 15 to emit light emitted from the LED light emitting element 12 . Furthermore, by enlarging the window portion 17 as much as possible and reducing the metal portion, the side illumination effect of the lighting device can be better ensured. In actual use, the heat generated by the lighting of the LED elements will be conducted to the metal housing 15 through the heat-conductive components, that is, the metal substrate 10 and the heat-conductive adhesive, so that heat can be dissipated efficiently.

When the metal housing 15 is provided, the LED light-emitting element 11 is arranged in such a manner that its optical axis overlaps with the central axis of the metal housing cross-section, and the shape and position of the main body 4a of the cover 4 can also be determined according to The window part 17 is arranged flexibly accordingly. The specific implementation of the structure of the window portion 17 will be further described below.

As shown in FIG. 6 , a plurality of window portions 17 are provided at equal intervals on the side surface portion 15 b of the metal housing 15 , whereby the distribution of the side surface irradiation light can be made symmetrical in the circumferential direction.

The window portion 17 is formed by sealing a penetrating portion provided on the side surface portion 15b of the metal housing 15 with a translucent sealing member (not shown). As the material of the translucent sealing member, for example, resin, glass, ceramics, etc. can be used. The penetrating portion is sealed by a light-transmitting sealing member, so that foreign matter such as moisture or dust can be prevented from entering the inside of the metal housing 15 . The color of the translucent sealing member may be colorless or colored. In the case of coloring, the translucent sealing part will function as a color filter, so that the lighting device can obtain more colorful and interesting lighting effects.

According to this structure, the illuminating device 1 has the metal housing 15, and the window portion 17 for guiding the light emitted by the LED light emitting element 12 to the outside of the metal housing 15 is provided on the side surface 15b of the metal housing 15. While ensuring independent illumination to the side of the lighting device 1 , it also improves the heat dissipation performance of the LED light emitting elements 11 and 12 .

In the present embodiment, the window portion 17 is arranged along the entire circumference of the metal housing 15, but the present invention is not limited thereto. For example, the window portion may be arranged only in a part of the circumferential direction, whereby the distribution of light irradiated from the side can be made asymmetrical in the circumferential direction. In particular, in the case of using power supply pins as power supply terminals, the side orientation of the lighting device 1 is fixed when it is installed on an appliance, so it is very convenient to use.

In this embodiment, the window portion 17 is formed by inserting a translucent sealing member into the penetrating portion, but the present invention is not limited to this as long as it can transmit light. For example, instead of sealing with a translucent member, it is also possible to directly use the penetrating portion as the window portion.

In this embodiment, the mode of emitting light from the entire opening area of the metal housing 15 is adopted, but the present invention is not limited thereto, and the mode of emitting light from a partial area of the opening 15c of the metal housing 15 may also be adopted. . By changing the structure of the opening 15c of the metal housing, for example, using an opaque material to form a front cover at the front of the lighting device 1, and disposing the front cover in the shape of, for example, a ring-shaped disc, the LED light emitting element 11 The outgoing light is emitted from the central opening of the ring-shaped front cover. The opaque material can be, for example, a metal material, an opaque ceramic material, or an opaque resin material. For example, if a material with high thermal conductivity such as a metal material is used, the heat dissipation characteristic of the lighting device can also be improved.

[Fifth Embodiment]

Fig. 8 is a cross-sectional view showing the structure of a lighting device in a fifth embodiment of the present invention.

Based on the first embodiment, the fifth embodiment provides a modified implementation of the lighting device of the present invention. In this embodiment, as shown in FIG. 8, the cover body 4 and the main lens 5 in the first embodiment are integrated to form a lens cover body 18, and the metal housing 15 in the first embodiment is canceled. 2. The light emitting part 3 is the same as that of the embodiment 1, and will not be repeated one by one. By adopting such an integrated method of components, the manufacturing process is simplified, and the manufacturing cost of the illuminating device 1 can be greatly reduced.

The main difference between this embodiment and the first embodiment is that the cover body 4 and the main lens 5 are integrally formed into a lens cover body 18, and in this embodiment, there is no need to set the side portion 15b of the metal housing 15, and only the bottom portion 15a is reserved as a lens cover body 18. heat sink. In addition, there is no need to use metal fittings 16 to install the main lens 5 on the heat dissipation housing. The manufacturing process can be greatly simplified and the manufacturing cost can be lowered.

[Sixth embodiment]

Fig. 9 is a cross-sectional view showing the structure of an illuminating device in a sixth embodiment of the present invention.

Based on the fifth embodiment, the sixth embodiment provides a possible implementation of the lighting device of the present invention. In this embodiment, the lighting device 1 further omits the bottom metal plate 15 a of the heat dissipation housing, and the metal substrate 10 is directly fixed to the housing 2 . Thereby, the length of the cylindrical side part 6 of the housing 2 in the axial direction is shortened by the amount corresponding to the thickness of the bottom metal plate 15a of the heat dissipation case.

According to the above structure, by eliminating the bottom metal plate, the overall size and weight of the lighting device can be reduced, or the storage space of the lighting circuit can be enlarged while maintaining the original size.

[Seventh embodiment]

The basic structure of the lighting device in the seventh embodiment of the present invention is the same as that of any lighting device in the first to sixth embodiments, or is a combination of structures in these embodiments, so it will not be repeated here. No further description of the accompanying drawings.

In this embodiment, the power of the LED light-emitting element 11 is greater than that of the LED light-emitting element 12, so that the main lighting requirements of the lighting device to the front can be met through the LED light-emitting element 11, and the side illumination can be realized with the lower power LED light-emitting element 12. Therefore, in While meeting the main lighting requirements, the secondary light-emitting elements with lower power are used to provide auxiliary side lighting, so that the effect of creating a special lighting atmosphere can be achieved with the best combination, and at the same time, the energy-saving requirements are met.

[Eighth embodiment]

The basic structure of the lighting device in the eighth embodiment of the present invention is the same as that of any lighting device in the first to seventh embodiments, or is a combination of structures in these embodiments, so it will not be repeated here. No further description of the accompanying drawings.

The lighting device of this embodiment also has a lighting circuit C to replace the lighting circuit 8 in the first to seventh embodiments, which is connected to the lamp base structure and the light emitting part respectively, including controlling and adjusting the LED light emitting element 11 for frontal illumination The first control circuit C1, and the second control circuit C2 that controls and adjusts the LED light emitting element 12 for side lighting. Through the lighting circuit C, the present invention can realize the switching of different lighting modes in the lighting device, including only the LED light-emitting element 11 or 11a can be used for frontal illumination when only the first control circuit C1 is turned on, and only the second control circuit When C2 is turned on, the LED light-emitting element 12 or 12a can be used alone for side illumination, and when the first control circuit C1 and the second control circuit C2 are turned on at the same time, the LED light-emitting element 11 or 11a and the LED light-emitting element 12 or 12a can be used simultaneously. Different lighting effects for front and side lighting. Further, through the lighting circuit C, the respective light intensity of the LED light-emitting element 11 or 11a and the LED light-emitting element 12 or 12a can be adjusted to obtain more varied lighting effects to meet the needs of actual use.

In addition, the second control circuit C2 can also separately control the lighting of the multiple LED light emitting elements 12 or 12a. For example, the multiple LED light emitting elements 12 or 12a can be divided into multiple groups, and the multiple groups can be controlled by the second control circuit C2. The LED light-emitting elements 12 or 12a are respectively controlled to be turned on or off, so as to respectively light up and extinguish the plurality of groups of LED light-emitting elements 12 or 12a.

In addition, the second control circuit C2 can also be controlled by turning on or off the LED light emitting elements 12 or 12a sequentially along the circumferential direction.

In each of the above-mentioned embodiments 1-8, in the lighting device 1 of the present invention, no matter whether the cover body 4 and the main lens 5 are integrally formed or not, by setting the outer surface of the main body part 4a of the cover body 4 such as four corners The cut surface of the tapered protrusion, thus, increases the surface area of the outer surface on the one hand, and on the other hand, the light emitted by the LED light emitting element 12 or 12a and other light rays are diffusely reflected by the protrusion, so that the lighting device can be further improved. 1's "flickering feeling" realizes the effect that the lighting device has a shining feeling even when it is not lit. The protruding part is not limited to a quadrangular pyramid shape, and may be triangular pyramid shape, pentagonal pyramid shape, hexagonal pyramid shape, or other pyramid shapes, or conical shape.

Industrial Applicability

The invention can be applied, for example, to lighting devices capable of controlling and adjusting front and side illumination separately.

Explanation of reference signs

1 Lighting device

2 shells

3 light emitting part

4 cover body

4a Main body

4b opening

5 main lens

6 sides

7 bottom

8 Light up the circuit

9 lamp head structure

10 metal substrate

11, 11a LED light emitting element

12, 12a LED light emitting element

13 pairs of lenses

14 Layers of light reflective material

15 metal frame

15a bottom

15b side part

15c opening

16 metal fittings

17 window department

18 Lens housing

Claims (13)

1. A lighting device, comprising: the first light-emitting element installed in the center of the substrate, the light-emitting surface of which faces the front of the lighting device; a first light control component for guiding the emitted light of the first light emitting element to the front of the lighting device; and a cylindrical or bowl-shaped light-transmitting member, which is arranged around the outer edge of the substrate and extends toward the front of the lighting device; It is characterized in that, There are also a plurality of second light-emitting elements, which are arranged on the substrate in a manner surrounding the first light-emitting elements; the emitted light of the second light-emitting elements passes through the light-transmitting member to the light of the lighting device. Irradiate from the side. 2 . The lighting device according to claim 1 , wherein the second light emitting element is mounted on the substrate with a light emitting surface facing the translucent member. 3 . 3. The illuminating device according to claim 1, wherein a second light control component is provided corresponding to the second light emitting element, and is used to guide the emitted light of the second light emitting element to the transparent light emitting element. Optical components. 4. The lighting device according to any one of claims 1-3, characterized in that, There is a cylindrical or bowl-shaped heat dissipation case surrounding the outer side of the light-transmitting member, which is composed of a bottom and side parts, A window portion for guiding the emitted light of the second light emitting element to the outside of the heat dissipation case is provided on the side surface of the heat dissipation case corresponding to the translucent member. 5. The illuminating device according to any one of claims 1-3, characterized in that it has a cooling fin provided on the lower side of the substrate. 6. The illuminating device according to claim 4, wherein the heat dissipation housing is made of metal material, opaque ceramic material or opaque resin material. 7. The illuminating device according to any one of claims 1-3, wherein the translucent member is formed integrally with the first light control member. 8. The illuminating device according to any one of claims 1-3, wherein the translucent member is colorless. 9. The illuminating device according to any one of claims 1-3, wherein the translucent member is a color filter material. 10. The illuminating device according to any one of claims 1-3, characterized in that the outer surface of the translucent member is smooth. 11. The illuminating device according to any one of claims 1-3, characterized in that a protrusion is provided on an outer surface of the translucent member. 12. The illuminating device according to any one of claims 1-3, characterized in that, the power of the first light emitting element is greater than that of the second light emitting element. 13. The lighting device according to any one of claims 1-3, characterized in that, It has a casing arranged around the outer edge of the substrate and extending toward the rear of the lighting device, and a lighting circuit accommodated in the casing, and the lighting circuit further has the function of controlling and adjusting the light emission of the first light-emitting element A first control circuit, and a second control circuit for controlling and adjusting the light emission of the second light emitting element.