CN212273916U - Lighting device and car light - Google Patents

Abstract

The utility model discloses a lighting device and car light, including anti-light cup and heat conduction post, the one end that light-emitting mouth was kept away from to anti-light cup includes a through-hole, the heat conduction post passes this through-hole, still includes luminous light source and light guide, the light source is fixed and is located the inside tip of anti-light cup at the heat conduction post, the light source is luminous to the direction of keeping away from the heat conduction post, the light guide is located luminous one side of light source, and the light that the light source sent is luminous to anti-light cup inner wall after the guide of light guide, the utility model provides an utilize the focus position that the heat pipe placed light source and light guide in anti-light cup in, both can make the light guide be located the focus, can transmit the heat that the light.

Description

Lighting device and car light

Technical Field

The utility model relates to the field of lighting technology, specifically speaking relates to a lighting device and car light.

Background

Lamps on vehicles are important factors influencing the driving safety of vehicles, and the development of the vehicle industry puts higher and higher requirements on the lamps of the vehicles. Tungsten filament lamps are a common light source for automotive lighting and are gradually eliminated due to their low brightness, high energy consumption and short service life. In order to improve the brightness of a light source and reduce energy consumption, researchers replace a tungsten filament lamp with an LED and research and develop a laser lighting device simulating filament application as a lighting source. The light guide element is formed by coupling light emitted from the LED into a rod-shaped light guide element and emitting the light on the surface of the rod-shaped light guide element. The simulated filament has the same light-emitting characteristic as a tungsten filament, and has the advantages of high brightness, long service life and the like, so that the simulated filament can replace the tungsten filament and be applied to the field of automobile illumination.

And because the LED emits light like a hemisphere in one direction (Lambert light), the traditional car lamp reflecting cup reflects and emits light of a circle on the side surface. Because the light distribution of LEDs is not matched with that of conventional tungsten lamps, there are technical difficulties in replacing LEDs with tungsten lamps.

To solve the above problem, the current commonly adopted technical solution is that the LED is attached to the side of a heat-conducting pillar. The two sides of the heat conducting column are respectively pasted with the LEDs to simulate a circle of 360-degree light emission. However, dark areas still exist, and in order to dissipate heat, the heat-conducting columns need to be as thick as possible, and the positions of the LEDs are out of focus, so that the light-emitting efficiency and the effect are poor.

SUMMERY OF THE UTILITY MODEL

An object of the utility model is to overcome the weak point of above-mentioned conventional art, the utility model provides a side luminous lighting device who uses in being suitable for the car light.

In order to solve the above problems, the utility model adopts the following technical scheme: an illumination device, characterized by: including anti-light cup and heat conduction post, the one end that light-emitting mouth was kept away from to anti-light cup includes a through-hole, the heat conduction post passes this through-hole, still includes luminous light source and light guide, the light source is fixed and is located the inside tip of anti-light cup at the heat conduction post, the light source is luminous to the direction of keeping away from the heat conduction post, the light guide is located the luminous one side of light source, and the light that the light source sent is luminous to anti-light cup inner wall after the guide of light guide.

As an improvement of the technical scheme: the heat conducting column comprises a heat pipe.

As an improvement of the technical scheme: the light guide comprises a receiving surface and an emergent surface, wherein the receiving surface is arranged opposite to the light source, the emergent surface is formed by surrounding the periphery of the receiving surface, and the area of the section of the light guide, which is perpendicular to the central line of the receiving surface, is gradually reduced along the direction of the optical axis of the light source.

As an improvement of the technical scheme: the light guide includes a convex reflective surface that is convex toward one side of the light source, the convex reflective surface being for reflecting light emitted by the light source.

As an improvement of the technical scheme: the light guide comprises a receiving surface, a reflecting surface and an emergent surface, wherein the receiving surface is arranged opposite to the reflecting surface, and the emergent surface is positioned at the periphery of a space between the receiving surface and the reflecting surface; the light emitted by the light source enters the light guide from the receiving surface and then exits from the exit surface.

As an improvement of the technical scheme: the reflecting surface is a convex reflecting surface, the convex reflecting surface protrudes towards one side of the light source, and the convex reflecting surface is used for reflecting light emitted by the light source.

As an improvement of the technical scheme: the convex reflecting surface is a conical surface, the cone angle of a cone formed by the conical surfaces is alpha, and the alpha is more than or equal to 80 degrees and less than or equal to 100 degrees.

As an improvement of the technical scheme: the light source comprises a light emitting surface, and the light emitting surface is provided with a scattering layer.

As an improvement of the technical scheme: the light guide comprises a light guide body, and the light guide body is provided with a light emitting surface.

Since the technical scheme is used, compare with prior art, the utility model provides an utilize the heat pipe to place light source and light guide in the focus position of anti-light cup both can make the light guide be located the focus, can transmit the heat that produces in the light source use again.

The present invention will be further described with reference to the accompanying drawings and the following detailed description.

Drawings

Fig. 1 is a front view of a lighting device.

Fig. 2 is a front view of a light guide.

Fig. 3 is a front view of a light guide.

Fig. 4 is an optical path diagram of a light guide.

Fig. 5 is an optical path diagram of a light guide.

Fig. 6 is a front view of another lighting device.

Fig. 7 is a front view of the light guide of fig. 6.

Fig. 8 is an optical path diagram of the light guide of fig. 7.

Fig. 9 is a front view of another lighting device.

Fig. 10 is a front view of the light guide of fig. 9.

Fig. 11 is a light intensity distribution diagram with a cone angle of 80 °.

Fig. 12 is a light intensity distribution diagram with a cone angle of 100 °.

Fig. 13 is a light intensity distribution diagram with a cone angle of 86 °.

Detailed Description

Example 1:

as shown in fig. 1 to 5, an illumination device includes a reflective cup 107 and a light source 103 disposed in the reflective cup 107, the reflective cup 107 and the light source 103 are fixed on a heat sink 101, light emitted by the light source 103 is reflected by the reflective cup 107 and then emitted along a light outlet direction of the reflective cup 107, the reflective cup 107 can turn the direction of light emitted by the illumination device and shape light spots as required, so that the light emitted by the light source 103 is suitable for lighting a vehicle lamp; it is also possible that the light emitted from the light source 103 does not irradiate the target area, resulting in insufficient brightness and waste of light energy. As can be seen from the above analysis, first, the light emitted from the light source 103 is emitted in the lateral direction, so that the reflector cup 107 functions to reflect the light emitted from the light source 103, and the light emitted from the light source 103 is reflected by the reflector cup 107 to change the light emitting direction of the light source 103 and shape the light spot; how to arrange the light emitted from the light source 103 at or near the focal point of the reflector cup 107; thirdly, the light source 103 emits light to generate heat, and how to lead out the heat generated by the light source 103 arranged in the reflecting cup 107. The above problems are several existing problems of the lighting device.

The lighting device comprises a reflecting cup 107 and a heat conducting column 102, wherein one end of the reflecting cup 107, which is far away from an opening, is provided with a through hole 108, the heat conducting column 102 penetrates through the through hole 108, the lighting device further comprises a luminous light source 103 and a light guide, the light source 103 is fixed at the end part, which is positioned inside the reflecting cup 107, of the heat conducting column 102, the light source 103 emits light in the direction far away from the heat conducting column 102, the light guide is positioned on the luminous side of the light source 103, and the light emitted by the light source 103 emits light to the inner wall of the reflecting cup 107 after.

Because the focus of the reflective cup 107 is located in the space inside the reflective cup 107, none of the auxiliary devices, namely the light source 103, is difficult to be arranged at or near the focus of the reflective cup 107, a light guide column is added in the patent to solve the problem that the light source 103 cannot be arranged at the focus of the reflective cup 107, the light source 103 is fixed at the end part of the light guide column, and the light guide column becomes an auxiliary device that the light source 103 is fixed at the focus of the reflective cup 107, so that the light source 103 is located at the focus of the reflective cup 107, and the problem that part of light emitted by the light source 103 cannot be reflected by the reflective cup 107 or the reflected light cannot be used; at this time, the light source 103 is located at the focal point and near the focal point of the reflector cup 107, but it is necessary to fully utilize the light emitted by the light source 103 and also to emit the light emitted by the light source 103 to the inner wall of the reflector cup 107, so a light guide is fixed on the light emitting side of the light source 103, and the light guide is used for guiding the light emitted by the light source 103 to the inner wall of the reflector cup 107, that is, the light emitted by the light source 103 is emitted to the periphery of the light source 103 in a twisting direction; the patent provides a structure that anti-light cup 107 and heat conduction post 102 cooperate, wherein set up a through-hole 108 on the anti-light cup 107, heat conduction post 102 sets up in through-hole 108, and heat conduction post 102 one end is in anti-light cup 107 this moment, the fixed luminous light source 103 of this tip, and heat conduction post 102 conducts the luminous light that produces of light source 103 to anti-light cup 107 outside, has solved the unable problem of deriving from anti-light cup 107 inside of the light that light source 103 sent.

It can be found through analysis that in order to achieve both the conduction of the heat generated by the light source 103 to the outside of the reflector cup 107 and the fixation of the position of the light source 103 to the focal point of the reflector cup 107 through the heat-conducting pillar 102, the heat-conducting pillar 102 must have a strong ability to transfer heat. In a preferred embodiment, the thermally conductive post 102 comprises a heat pipe. At least one section inside the reflector cup 107 is a heat pipe. The heat pipe system is a special material with the characteristic of rapid temperature equalization, wherein the hollow metal pipe body has the characteristic of light weight, and the characteristic of rapid temperature equalization enables the heat pipe system to have excellent heat superconducting performance. The interior of the heat pipe is pumped into a negative pressure state and filled with proper liquid, and the liquid has a low boiling point and is easy to volatilize. The tube wall has a wick that is constructed of a capillary porous material. When one end of the heat pipe is heated, the liquid in the capillary tube is rapidly evaporated, the vapor flows to the other end under a slight pressure difference and releases heat to be condensed into liquid again, and the liquid flows back to the evaporation end along the porous material under the action of capillary force, so that the heat is not circulated and transferred from one end of the heat pipe to the other end. This cycle is rapid and heat can be conducted away from the heat source.

The above analysis has solved the problem that the light source 103 radiates heat and cannot be located at the focal point of the reflective cup 107, and the problem to be solved is to emit light emitted by the light source 103 to the periphery thereof, and in this patent, a light guide is used to achieve the above function, and in a preferred embodiment, the light guide includes a receiving surface 105 disposed opposite to the light source 103 and an emitting surface 106 surrounded by the periphery of the receiving surface 105, and the area of the cross section of the light guide perpendicular to the center line of the receiving surface 105 is gradually reduced along the optical axis direction of the light source 103. The receiving surface 105 is arranged opposite to the light source 103, so that the light emitted by the light source 103 can be received into the light guide by the receiving surface 105 as much as possible, and the light emitted by the light source 103 is prevented from being wasted because the light cannot enter the light guide; the light guide is provided to turn the light emitted from the light source 103 in the direction to be emitted to the periphery of the light guide, and it is understood from the condition that the position of the emission surface 106 from which the light is emitted from the light guide determines the direction in which the light is emitted from the light guide. As is apparent from the above description, the exit surface 106 is located around the periphery of the receiving surface 105, and the area of the receiving surface 105 is gradually reduced along the optical axis direction, and various shapes can be obtained according to the above description, for example, as shown in fig. 2 and 3, the exit surface 106 of the light guide is in the shape of a cone or an approximate cone, and the cone of the exit surface 106 in fig. 3 is taken as an example in this embodiment.

The receiving surface 105 of the light guide is opposite to the light source 103, and since the light guide needs to be used with the light source 103, in order to make the receiving surface 105 and the receiving surface 103 fit together more closely and prevent the light emitted by the light source 103 from emitting out of the receiving surface 105, in a preferred embodiment, the light source 103 comprises the light emitting surface 104, and the light guide comprises the receiving surface 105 arranged opposite to the light source 103, at this time, the light emitting surface 104 and the receiving surface 105 can be closely fitted together, so that the light emitted by the light source 103 can be prevented from emitting out of the receiving surface 105, the waste of the light is avoided.

Since the light guide comprises a receiving surface 105 and the light source 103 comprises a light emitting surface 104, the two can be tightly attached together to prevent light from exiting from the two, but the tight attachment here comprises two connection methods, one of which is integrally bonded through a transparent light guide medium, and the other is that an air gap still exists between the two. When the light emitting surface 104 and the receiving surface 105 are bonded together by a transparent light guide medium, the high-angle light can directly enter the light guide from the light emitting surface 104 through the receiving surface 105 and then exit the light guide from the exit surface 106. When an air gap exists between the light-emitting surface 104 and the receiving surface 105, the high-angle light emitted from the light-emitting surface 104 enters the light guide from the receiving surface 105, and at the moment, the high-angle light is totally reflected on the surface of the emergent surface 106 until the high-angle light is twisted to an angle and then is emitted out of the light guide from the emergent surface 106.

From the above analysis, it can be seen that the light guide is more favorable for light to exit from the light guide when the light emitting surface 104 and the receiving surface 105 are bonded together by the transparent light guide medium. However, in either case, some of the light may be reflected back to the light-emitting surface 104 by the exit surface 106, and even if the light-reflecting surface reflects the light back to the light guide, the light-reflecting surface returns to the light-emitting surface 104 as it is until the energy converted into another form by the light-reflecting surface disappears. In a preferred embodiment, a scattering layer is provided on the light-emitting surface 104. The light that cannot exit the light guide exit surface 106 returns to the light emitting surface 104, and the scattering layer provided on the light emitting surface 104 scatters and reflects a portion of the light back into the light guide at a changed angle, so that the portion of the light can exit the light guide exit surface 106. The scattering layer shortens the light path of the light exiting from the exit surface 106 and avoids the waste of light energy caused by the light failing to exit from the exit surface 106.

The light guide is added to turn the light emitted from the light source 103 in the same direction, so that the light emitted from the light source 103 is emitted to the periphery of the light source 103 and then is reflected by the inner wall of the reflector cup 107 to be emitted from the light outlet, and therefore the light guide needs to be at or near the focal point of the reflector cup 107. And secondly, the light emitted by the light guide piece needs to uniformly emit light to the periphery, so that the light emitted by the light outlet of the light reflecting cup 107 is more uniform without dark areas, and the lighting requirement is met. In a preferred embodiment, the exit surface 106 is provided with a scattering layer. The scattering layer will follow the light scattering back of emitting surface 106 outgoing, makes the light of emitting surface 106 outgoing light more even, is fit for reflecting cup 107's design more, has reduced the existence of dark space after reflecting cup 107 reflection, accords with the illumination demand more.

In this preferred embodiment, a scattering layer is added to the emission surface 106, and the light emitted from the emission surface 106 is scattered to achieve uniform light. It is also possible to add several white particles inside the light-guide, which are uniformly fixed inside the light-guide. The white particles have the function of reflecting light, so that the light entering the light guide can be randomly reflected, and the white particles are uniformly arranged in the light guide at the moment, so that the light uniformizing effect is better. The light guide can be made of glass or plastic, and white particles are added during molding to fill the inside of the light guide with the white particles.

As shown in fig. 4, when the light emitting surface 104 and the receiving surface 105 are bonded by a transparent light guiding medium, and a scattering layer is provided on the exit surface 106, the optical path is as follows:

the first outgoing light 121 is emitted from the light emitting surface 104, and the first outgoing light 121 enters the light guide after passing through the receiving surface 105, and at this time, the first outgoing light 121 is scattered by the scattering layer and then directly exits from the outgoing surface 106 to the outside of the light guide.

The second outgoing light 122 is emitted from the light emitting surface 104, the second outgoing light 122 enters the light guide after passing through the receiving surface 105, at this time, the second outgoing light 122 is totally reflected multiple times inside the light guide and then returns to the light emitting surface 104, the second outgoing light 122 passes through the receiving surface 105 again and enters the light guide after being scattered by the light emitting surface 104, and the second outgoing light 122 is finally emitted out of the light guide from the outgoing surface 106 after being scattered by the scattering layer.

The third outgoing light 123 is emitted from the light emitting surface 104, and the third outgoing light 123 enters the light guide after passing through the receiving surface 105, and at this time, the third outgoing light 123 is refracted at the outgoing surface 106 and then exits to the outside of the light guide.

As shown in fig. 5, when an air gap is included between the light emitting surface 104 and the receiving surface 105, and a number of white particles are uniformly arranged in the light guide, the light path is as follows:

the fourth outgoing light 124 is emitted from the light emitting surface 104, and the fourth outgoing light 124 enters the light guide after passing through the receiving surface 105, and then the fourth outgoing light 124 is emitted from the outgoing surface 106 to the outside of the light guide after being reflected for several times in the light guide.

The fifth outgoing light 125 is emitted from the light emitting surface 104, the fifth outgoing light 125 enters the light guide after passing through the receiving surface 105, at this time, the fifth outgoing light 125 returns to the light emitting surface 104 after being reflected for several times inside the light guide, the fifth outgoing light 125 passes through the receiving surface 105 again after being scattered by the light emitting surface 104 and enters the light guide, and the fifth outgoing light 125 finally exits from the light emitting surface 106 to the outside of the light guide.

Sixth outgoing light 126 is emitted from the light emitting surface 104, and the sixth outgoing light 126 passes through the receiving surface 105, enters the light guide, is finally refracted at the outgoing surface 106, and then exits from the outgoing surface 106 to the outside of the light guide.

Example 2:

embodiment 1 gives a specific technical solution in which the area of a cross section of the light guide perpendicular to the center line of the receiving surface is gradually reduced in the direction of the optical axis of the light source, however, in practical applications, there are many alternative technical solutions.

In fig. 6-8, the light-guide comprises a receiving surface 205, a reflecting surface 209 and an exit surface 206, the receiving surface 205 being arranged opposite to the reflecting surface 209, the exit surface 206 being located at the periphery of the space between the receiving surface 205 and the reflecting surface 209; light emitted by the light source 203 enters the light guide through the receiving surface 205 and exits through the exit surface 206.

Light emitted by the light source 203 enters the light guide through the receiving surface 205 and then exits through the exit surface 206; the light emitting surface of the light source 203 is closely attached to the receiving surface 205; the light-emitting surface at least partially scatters and reflects light emitted by the light source 203. The illumination device twists the light emitted from the light source 203 in the direction of the light guide, and emits the light emitted from the light source 203 in the lateral direction of the illumination device, and the shape, positional relationship, and connection relationship of the receiving surface 205, the reflecting surface 209, and the emission surface 206 of the light guide determine whether the light emitted from the entire illumination device is emitted to the lateral side thereof. Light from the light source 203 enters the light guide and is split into a plurality of portions by the path along which it exits. As shown in fig. 7, taking three portions as an example, the first portion 221 of light directly exits from the periphery of the space between the receiving surface 205 and the reflecting surface 209, i.e., directly exits from the exit surface 206. The second portion of light 222 enters the light guide and propagates toward the reflecting surface 209, and since the receiving surface 205 is disposed opposite to the reflecting surface 209, the second portion of light 222 reaches the reflecting surface 209, and since the reflecting surface 209 can reflect the light emitted from the light source 203, the second portion of light 222 is reflected by the reflecting surface 209, and the reflected second portion of light 222 is emitted from the emitting surface 206. The third portion 223 enters the light guide from the receiving surface 205 and then totally reflects on the inner wall of the exit surface 206, the totally reflected third portion 223 continues to be emitted toward the reflecting surface 209 side in the light guide, the third portion 223 is reflected by the reflecting surface 209 and then returns to the light emitting surface of the light source 203, the light emitting surface at least partially scatters and reflects the light emitted by the light source 203, the third portion 223 scatters on the light emitting surface, and the scattered third portion 223 finally exits from the exit surface 206.

The light guide reflects the light emitted from the light source 203 by the reflecting surface 209, and the light emitting surface of the light source 203 scatters and reflects the light emitted from the light source 203, so that the light emitted from the light source 203 is emitted to the periphery of the light guide. In a preferred embodiment, the reflective surface 209 is convex toward the light source 203, and the reflective surface 209 is used for reflecting the light emitted from the light source 203.

Since the light emitted from the light source 203 is reflected by the reflecting surface 209 and the reflecting surface 209 is convex toward the light source 203, the light emitted from the light source 203 is reflected by the reflecting surface 209 and is emitted toward the periphery of the reflecting surface 209 without returning to the light source 203. As can be seen from the above analysis, the reflection surface 209 is disposed on the light path of the light source 203, and the structure that the reflection surface 209 protrudes toward one side of the light source 203 changes the emitting direction of the light emitted from the light source 203, so that the emitted light can be emitted toward the periphery of the reflection surface 209, and the light emitted toward the periphery can be reflected on the inner wall of the light reflecting cup 207 and emitted from the light outlet, thereby improving the light emitting efficiency.

Example 3:

the light guide of embodiment 1 is a complicated structure, and includes a reflecting surface 309, the reflecting surface 309 is convex toward the light source side, and the reflecting surface 309 is used for reflecting the light emitted from the light source.

In fig. 9 to 10, light emitted from the light source 303 is reflected by the reflecting surface 309, and since the reflecting surface 309 is convex toward the light source 303, the light emitted from the light source 303 is reflected by the reflecting surface 309 and is emitted toward the periphery of the reflecting surface 309 instead of being returned to the light source 303. As can be seen from the above analysis, the structure in which the reflecting surface 309 is provided on the optical path of the light source 303 and the reflecting surface 309 protrudes toward the light source 303 changes the emission direction of the light emitted from the light source 303, so that the emitted light can be emitted toward the periphery of the reflecting surface 309.

In a preferred embodiment, the reflecting surface 309 is a conical surface, which is smoother and does not block the light incident on the reflecting surface 309, and the light path of the light reflected by the conical surface is emitted to the side of the reflecting surface 309, which is more desirable, and the effect of the reflected light is better, so that the light path of the light reflected by the reflecting surface 309 can be controlled conveniently. Because the reflecting surface 309 is a conical surface, and the conical surface forms a cone, the position of the cone and the cone angle determine the position of the optical axis of the light reflected by the conical surface on the inner wall of the reflecting cup 307, the closer the optical axis of the light reflected by the conical surface is to the light outlet of the reflecting cup 307, the more a part of the light is emitted from the light outlet of the reflecting cup 307 without being reflected by the reflecting cup 307, and the position of the emitted part of the light is not at the light-emitting design position of the reflecting cup 307, so that the light becomes invalid light; the farther the optical axis of the light reflected by the conical surface is from the light outlet of the light reflecting cup 307, that is, the light reflected by the conical surface is concentrated at the bottom of the light reflecting cup 307, and at this time, the light emitted by the light reflecting cup 307 is concentrated in a certain area, so that a local dark area appears in the irradiation range. In order to enable the light emitted after the conical surface reflects the light source 303 to be reflected at the designed position of the inner wall of the reflective cup 307 and then to be emitted from the light outlet, the light illumination effect emitted from the reflective cup 307 is better. Therefore, we need to control the inclination angle of the conical surface, i.e. the cone angle of the cone. The taper angle of the cone in which the conical surface is located is alpha, and the alpha is more than or equal to 80 degrees and less than or equal to 100 degrees after repeated tests. Analysis of the data obtained from the experiments is shown in FIGS. 11-13, where the abscissa is angle and the ordinate is luminescence intensity. The axes of the cones formed by the reflecting surfaces 309 correspond to each other, and the direction of the axes of the cones formed by the reflecting surfaces 309 away from the light source 303 is 0 degree, wherein clockwise is positive and counterclockwise is negative. The angular relationship between the optical axis of the light reflected by the reflecting surface 309 and the axis of the cone formed by the reflecting surface 309 at different angles α was experimentally obtained.

As shown in fig. 11, when the cone angle α of the cone is 80 °, it can be seen that the light emission intensity is strongest at +100 ° and-100 °, that is, when α is 80 °, the optical axis of the light reflected by the reflecting surface 309 is on one conical surface of which the axial included angle of the cone formed by the reflecting surface 309 is 100 °.

As shown in fig. 12, when the cone angle α of the cone is 100 °, it can be seen that the light emission intensity is strongest at +128 ° and-128 °, that is, when α is 100 °, the optical axis of the light reflected by the reflecting surface 309 is on one conical surface of which the axial included angle of the cone formed by the reflecting surface 309 is 128 °.

As can be seen from fig. 11 and 12, when the included angle of the optical axis of the light reflected by the reflecting surface 309 is 100 ° to 128 ° with respect to the axis of the cone formed by the reflecting surface 309, the light reflected by the reflecting surface 309 is located between the light outlet of the reflective cup and the bottom, and at this time, the light emitted from the light outlet of the reflective cup is most uniform and has the best effect.

As shown in fig. 13, according to a preferred embodiment obtained after trial and error, when the taper angle α of the cone is 86 °, the light emission intensity is strongest at +106 ° and-106 °, that is, at this position, the optical axis of the light reflected by the reflecting surface 309 is on a conical surface having an angle of 106 ° with respect to the axial center of the cone formed by the reflecting surface 309.

The present invention is not limited to the embodiments described above, but the embodiments are only preferred embodiments of the present invention and should not be considered as limiting the scope of the present invention. All the equivalent changes and improvements made according to the application scope of the present invention should fall within the patent coverage of the present invention.

Claims (10)

1. An illumination device, characterized by: including anti-light cup and heat conduction post, the one end that light-emitting mouth was kept away from to anti-light cup includes a through-hole, the heat conduction post passes this through-hole, still includes luminous light source and light guide, the light source is fixed and is located the inside tip of anti-light cup at the heat conduction post, the light source is luminous to the direction of keeping away from the heat conduction post, the light guide is located the luminous one side of light source, and the light that the light source sent is luminous to anti-light cup inner wall after the guide of light guide.

2. A lighting device as recited in claim 1, wherein: the heat conducting column comprises a heat pipe.

3. A lighting device as recited in claim 1, wherein: the light guide comprises a receiving surface and an emergent surface, wherein the receiving surface is arranged opposite to the light source, the emergent surface is formed by surrounding the periphery of the receiving surface, and the area of the section of the light guide, which is perpendicular to the central line of the receiving surface, is gradually reduced along the direction of the optical axis of the light source.

4. A lighting device as recited in claim 1, wherein: the light guide includes a reflection surface protruding toward one side of the light source, the reflection surface reflecting light emitted from the light source.

5. A lighting device as recited in claim 1, wherein: the light guide comprises a receiving surface, a reflecting surface and an emergent surface, wherein the receiving surface is arranged opposite to the reflecting surface, and the emergent surface is positioned at the periphery of a space between the receiving surface and the reflecting surface; the light emitted by the light source enters the light guide from the receiving surface and then exits from the exit surface.

6. A lighting device as recited in claim 5, wherein: the reflecting surface is a convex reflecting surface, the reflecting surface is convex towards one side of the light source, and the reflecting surface is used for reflecting light emitted by the light source.

7. A lighting device as recited in claim 4 or claim 6, wherein: the reflecting surface is a conical surface, the cone angle of a cone formed by the conical surfaces is alpha, and the alpha is more than or equal to 80 degrees and less than or equal to 100 degrees.

8. A lighting device as recited in any one of claims 3-5, wherein: the light source comprises a light emitting surface, and the light emitting surface is provided with a scattering layer.

9. A lighting device as recited in claim 3 or claim 5, wherein: the light guide comprises a light guide body, and the light guide body is provided with a light emitting surface.

10. A vehicle lamp, characterized in that: comprising a lighting device according to any one of claims 1-9.

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