Thick-wall light guide structure for realizing light emission of three separated areas by single LED (light-emitting diode) module

Abstract

The utility model discloses a thick-wall light guide structure for realizing light emission of three separated areas by a single LED module, which comprises an LED module, a thick-wall light guide piece and a reflector, the thick-wall light guide piece comprises a light incident part and a first light emergent part integrally formed at one end of the light incident part, and the first light emergent part is provided with first emergent optical patterns; the second light-emitting part and the third light-emitting part are located on the upper side and the lower side of the first light-emitting part, and the first total reflection part is integrally connected between the second light-emitting part and the light-in part and used for enabling incident light to be emitted to the second light-emitting part through two times of total reflection. The second total reflection part is integrally connected between the third light outlet part and the light inlet part and is used for reflecting the incident light to the third light outlet part through two times of total reflection; and light emitted from the light incident part is refracted and diffused through the second emergent optical pattern of the second light emergent part, the first emergent optical pattern and the third emergent optical pattern of the third light emergent part so as to form light emitted from the upper area, the middle area and the lower area.

Description

TECHNICAL FIELD

[0001] The utility model relates to the technical field of car lamp accessory products, in particular to a thick wall light guide structure for realizing three separated area light emission of single LED module, which realizes three separated area light emission through the same set of light source and optical structure and can ensure the consistency of lighting effect and save lamp space, mold and LED module material cost. BACKGROUND

[0002] With the increasing demand of people for car appearance, more and more car lamps have single function light emission area, and many areas are separated due to the need of modeling, which puts forward higher requirements for lighting effect and light color of different areas and the size and cost of lamp space, so it is necessary to realize these functions with highly integrated and compact structure while ensuring the consistency of lighting effect of different areas.

[0003] The Chinese utility model patent with the authorized announcement number CN207065463U discloses a car lamp thick wall condenser light emitting structure. The car lamp thick wall condenser light emitting structure comprises an LED circuit board, LED particles and a corner type thick wall condenser. The inner end of the corner type thick wall condenser has a Fresnel pattern for generating parallel light, and the corner has a total reflection inclined plane. The outer end surface of the corner type thick wall condenser has a pattern capable of diffusing light. The LED particles are fixed on the LED circuit board and correspond to the position of the inner end of the corner type thick wall condenser. The car lamp thick wall condenser light emitting structure can obtain more uniform lighting effect, avoid the LED particle feeling and dark area problem caused by traditional design, effectively solve the problem of visible appearance of traditional direct reflection condenser circuit board, and has high energy utilization rate.

[0004] The car lamp thick wall condenser light emitting structure has the following disadvantages: the car lamp thick wall condenser light emitting structure can only emit light in one area. If three areas need to emit light, three sets of LED modules are used to cooperate with three sets of car lamp thick wall condenser light emitting structures to realize three area light emission, which requires a large installation space and is inconvenient to install, and the material cost and mold cost are high. UTILITY MODEL CONTENTS

[0005] The utility model aims at overcoming the defects of the prior art and providing a thick wall light guide structure for realizing three separated area light emission of single LED module.

[0006] In order to solve the above technical problems, the utility model adopts the following technical scheme: Single LED module realizes three separated area light emitting thick wall light guide structure includes a LED module and with LED module cooperation installation thick wall light guide piece and install in LED module below and be used for collimating and reflecting the light of LED module to thick wall light guide piece mirror, The thick wall light guide piece includes the first light outlet that integrally forms in the light inlet one end of the light inlet and is located mirror side, The first light outlet is provided with first exit optical pattern;The thick wall light guide piece still includes the second light outlet that is located the first light outlet upside, The first total reflection part that is integrally connected between the second light outlet and the light inlet and is used for the light that shoots in through twice total reflection to shoot to the second light outlet, The third light outlet that is located the first light outlet downside, The second total reflection part that is integrally connected between the third light outlet and the light inlet and is used for the light that shoots in through twice total reflection to shoot to the third light outlet;The light that shoots in from the light inlet refracts diffusion through the second exit optical pattern of the second light outlet, the first exit optical pattern, the third exit optical pattern of the third light outlet to form the light emitting of upper area, middle area, lower area.

[0007] Further, in the above technical solution, the second light outlet, the first light outlet and the third light outlet are vertically distributed in three intervals.

[0008] Further, in the above technical solution, the first total reflection part is vertically distributed and is perpendicular to the second light outlet and the light inlet, the first total reflection part is provided with a first total reflection optical surface on the left side of the lower end, the light from the light inlet is totally reflected into the first total reflection part through the first total reflection optical surface, the first total reflection part is provided with a second total reflection optical surface on the right side of the upper end, the light from the first total reflection part is totally reflected to the second light outlet through the second total reflection optical surface.

[0009] Further, in the above technical solution, the first total reflection optical surface and the second total reflection optical surface are both reflection planes, the reflection planes are plated with an aluminum plating reflection layer; or, the first total reflection optical surface and the second total reflection optical surface are both a plurality of total reflection tooth groove surfaces which are continuously distributed in an inclined manner, the total reflection tooth groove surfaces are plated with an aluminum plating reflection layer.

[0010] Further, in the above technical solution, the second total reflection part is vertically distributed and is perpendicular to the third light outlet and the light inlet, the second total reflection part is provided with a third total reflection optical surface on the left side of the upper end, the light from the light inlet is totally reflected into the second total reflection part through the third total reflection optical surface, the second total reflection part is provided with a fourth total reflection optical surface on the right side of the lower end, the light from the second total reflection part is totally reflected to the third light outlet through the fourth total reflection optical surface.

[0011] Further, in the above technical solution, the third total reflection optical surface and the fourth total reflection optical surface are both reflective planes, and an electroplated aluminum reflective layer is electroplated on the reflective planes; or, the third total reflection optical surface and the fourth total reflection optical surface are both a plurality of total reflection tooth groove surfaces that are continuously distributed in an inclined manner, and the total reflection tooth groove surfaces are electroplated with an electroplated aluminum reflective layer.

[0012] Further, in the above technical solution, the first light exit optical pattern includes a plurality of convex blocks that are arrayed and have convex arc-shaped outer surfaces, the convex blocks in each row are distributed in a stepped manner, and the convex blocks in each column are also distributed in a stepped manner; the shapes and structures of the second light exit optical pattern and the third light exit optical pattern are the same as those of the first light exit optical pattern.

[0013] Further, in the above technical solution, a right side surface of the light inlet portion is a plane; or, the right side surface of the light inlet portion is provided with a plurality of light inlet convex teeth that are continuously distributed in a vertical direction and used to increase light inlet uniformity.

[0014] Further, in the above technical solution, a reflective surface of the reflector is a smooth arc-shaped surface; or, the reflective surface of the reflector is an arc-shaped groove formed by a plurality of reflective facets.

[0015] Further, in the above technical solution, a plurality of reflectors are connected together to form an integral whole, and each reflector corresponds to one LED in the LED module.

[0016] After the above technical solution is adopted, the utility model has the following beneficial effects compared with the prior art: in the specific work, the light emitted by the LED module is incident on the reflector, is reflected and collimated by the reflector, and is then incident on the light inlet portion of the thick-wall light guide member, wherein a first part of the light that has entered the light inlet portion is subjected to total reflection by the first total reflection portion to be incident on the second light exit portion, the light path is increased, and the light is refracted and diffused by the second light exit optical pattern to form the light emission of the upper region, and the light uniformity is excellent; a second part of the light that has entered the light inlet portion directly enters the first light exit portion, and the light is refracted and diffused by the first light exit optical pattern to form the light emission of the middle region, and the light uniformity is better; a third part of the light that has entered the light inlet portion is subjected to total reflection by the second total reflection portion to be incident on the third light exit portion, the light path is increased, and the light is refracted and diffused by the third light exit optical pattern to form the light emission of the upper region, and the light uniformity is excellent; three separate regions emit light through the same set of light sources (i.e., the LED module) and optical structures (i.e., the thick-wall light guide member), the consistency of the lighting effect is ensured, and the lamp space and the material costs of the mold and the LED module are saved. BRIEF DESCRIPTION OF DRAWINGS

[0017] Fig. 1 is a perspective view of the utility model;

[0018] Fig. 2 is the front view (displaying light path) of the utility model. Specific embodiments:

[0019] The utility model is further explained below in combination with specific embodiments and drawings.

[0020] See Figs. 1-2 As shown in the figure, it is a kind of single LED module realizes three separate areas light emitting thick wall light guide structure, it includes a LED module 2 and with LED module 2 cooperation installation thick wall light guide piece 1 and install at the lower of LED module 2 and for the light emitted by LED module 2 collimation and reflection to thick wall light guide piece 1 reflector 3, wherein, the reflector 3 is located at the right side of thick wall light guide piece 1, and interval is formed between.

[0021] The thick-wall light guide 1 comprises a light inlet part 11 located beside the reflector 3 and a first light outlet part 12 integrally formed at one end of the light inlet part 11, and the first light outlet part 12 is provided with a first light outlet optical pattern 121; the thick-wall light guide 1 further comprises a second light outlet part 13 located on the upper side of the first light outlet part 12, a first total reflection part 14 integrally connected between the second light outlet part 13 and the light inlet part 11 and used for making the incident light pass through twice total reflection to the second light outlet part 13, a third light outlet part 15 located on the lower side of the first light outlet part 12, and a second total reflection part 16 integrally connected between the third light outlet part 15 and the light inlet part 11 and used for making the incident light pass through twice total reflection to the third light outlet part 15; the light incident from the light inlet part 11 is refracted and diffused through the second light outlet optical pattern 131 of the second light outlet part 13, the first light outlet optical pattern 121 and the third light outlet optical pattern 151 of the third light outlet part 15 to form the light emission of the upper region, the middle region and the lower region.

[0022] The second light outlet part 13, the first light outlet part 12 and the third light outlet part 15 are in three spaced parallel distributions of upper, middle and lower, which can form the light emission of three separated regions more obviously to meet different use requirements.

[0023] The first total reflection part 14 is vertically distributed with the second light exit part 13 and the light entrance part 11, and the lower left end of the first total reflection part 14 is provided with a first total reflection optical surface 141, through which the light rays emitted by the light entrance part 11 are totally reflected into the first total reflection part 14, and the upper right end of the first total reflection part 14 is provided with a second total reflection optical surface 142, through which the light rays emitted into the first total reflection part 14 are totally reflected to the second light exit part 13. The first total reflection part 14 realizes twice total reflection of light through the first total reflection optical surface 141 and the second total reflection optical surface 142.

[0024] The first total reflection optical surface 141 and the second total reflection optical surface 142 are both reflection planes, and an electroplated aluminum reflection layer is plated on the reflection planes; or the first total reflection optical surface 141 and the second total reflection optical surface 142 are both a plurality of total reflection tooth groove surfaces that are continuously distributed in an inclined manner, and an electroplated aluminum reflection layer is plated on the total reflection tooth groove surfaces, and the design of the total reflection tooth groove surfaces can further improve light uniformity.

[0025] The second total reflection part 16 is vertically distributed with the third light exit part 15 and the light entrance part 11, and the upper left end of the second total reflection part 16 is provided with a third total reflection optical surface 161, through which the light rays emitted by the light entrance part 11 are totally reflected into the second total reflection part 16, and the lower right end of the second total reflection part 16 is provided with a fourth total reflection optical surface 162, through which the light rays emitted into the second total reflection part 16 are totally reflected to the third light exit part 15. The second total reflection part 16 realizes twice total reflection of light through the third total reflection optical surface 161 and the fourth total reflection optical surface 162.

[0026] The third total reflection optical surface 161 and the fourth total reflection optical surface 162 are both reflection planes, and an electroplated aluminum reflection layer is plated on the reflection planes; or the third total reflection optical surface 161 and the fourth total reflection optical surface 162 are both a plurality of total reflection tooth groove surfaces that are continuously distributed in an inclined manner, and an electroplated aluminum reflection layer is plated on the total reflection tooth groove surfaces, and the design of the total reflection tooth groove surfaces can further improve light uniformity.

[0027] The first light exit optical pattern 121 includes a plurality of convex blocks 101 that are arrayed and have convex arc surfaces, each row of convex blocks 101 is distributed in a stepped manner, and each column of convex blocks 101 is also distributed in a stepped manner, which can achieve an excellent diffusion effect and greatly enhance light emission uniformity. The shapes and structures of the second light exit optical pattern 131 and the third light exit optical pattern 151 are the same as those of the first light exit optical pattern 121, and the same effect is achieved, which will not be described here.

[0028] The right side surface of the light inlet part 11 is a plane, or the right side surface of the light inlet part 11 is provided with light inlet convex teeth which are vertically and continuously distributed and used for increasing light inlet uniformity, and the light inlet convex teeth can disperse the incident light, that is, the light inlet convex teeth receive the incident light through different surfaces, so that the light is refracted when entering the light inlet part 11, and the purpose of dispersing the light to improve the light uniformity is achieved.

[0029] The reflecting surface of the reflector 3 is a smooth arc surface, or the reflecting surface of the reflector 3 is an arc-shaped groove formed by a plurality of reflecting facets, and the reflecting effect is better.

[0030] The plurality of reflectors 3 are connected together to form a whole, and each reflector 3 corresponds to one LED 21 in the LED module 2.

[0031] In summary, in the specific work, the light emitted by the LED module 2 is incident on the reflector 3, and the light is reflected and collimated by the reflector 3 and then incident on the light inlet part 11 of the thick-wall light guide part 1, wherein the first part of the light entering the light inlet part 11 is subjected to total internal reflection by the first total reflection part 14 to be incident on the second light outlet part 13, the light path is increased, and then the light is refracted and diffused by the second light outlet optical pattern 131 to form the light emission of the upper region, and the light uniformity is excellent; the second part of the light entering the light inlet part 11 directly enters the first light outlet part 12, and then the light is refracted and diffused by the first light outlet optical pattern 121 to form the light emission of the middle region, and the light uniformity is better; the third part of the light entering the light inlet part 11 is subjected to total internal reflection by the second total reflection part 16 to be incident on the third light outlet part 15, the light path is increased, and then the light is refracted and diffused by the third light outlet optical pattern 151 to form the light emission of the upper region, and the light uniformity is excellent; through the same set of light source (i.e. the LED module 2) and optical structure (i.e. the thick-wall light guide part 1), three separate regions emit light, and the consistency of the lighting effect is ensured, and the lamp space and the material costs of the mold and the LED module are saved.

[0032] Of course, the above only describes specific embodiments of the utility model, and does not limit the utility model implementation range, and equivalent changes or modifications made according to the structure, features and principles described in the utility model patent application scope should be included in the utility model patent application scope.

Claims

1. A thick-wall light guide structure for realizing three separate area light emitting by a single LED module, comprising an LED module (2), a thick-wall light guide member (1) installed in cooperation with the LED module (2), and a reflector (3) installed below the LED module (2) and used for collimating and reflecting light emitted by the LED module (2) to the thick-wall light guide member (1), the thick-wall light guide member (1) comprising a light inlet portion (11) located beside the reflector (3) and a first light outlet portion (12) integrally formed at one end of the light inlet portion (11), the first light outlet portion (12) being provided with a first exit optical pattern (121). characterized in that The thick-wall light guide member (1) further comprises a second light outlet portion (13) located above the first light outlet portion (12), a first total reflection portion (14) integrally connected between the second light outlet portion (13) and the light inlet portion (11) and used for making the incident light pass through twice total reflection to reach the second light outlet portion (13), a third light outlet portion (15) located below the first light outlet portion (12), and a second total reflection portion (16) integrally connected between the third light outlet portion (15) and the light inlet portion (11) and used for making the incident light pass through twice total reflection to reach the third light outlet portion (15); the light incident from the light inlet portion (11) is refracted and diffused through the second exit optical pattern (131) of the second light outlet portion (13), the first exit optical pattern (121), and the third exit optical pattern (151) of the third light outlet portion (15) to form light emitting of the upper area, the middle area, and the lower area.

2. The thick-walled light guide structure of claim 1, wherein the single LED module implements three separate regions of light emission. The second light outlet portion (13), the first light outlet portion (12), and the third light outlet portion (15) are vertically and parallelly distributed in three intervals.

3. The thick-walled light guide structure of claim 1, wherein the single LED module implements three separate area light emission. The first total reflection portion (14) is vertically distributed perpendicularly to the second light outlet portion (13) and the light inlet portion (11), the first total reflection portion (14) is provided with a first total reflection optical surface (141) at the left lower end thereof, the light incident from the light inlet portion (11) is totally reflected into the first total reflection portion (14) through the first total reflection optical surface (141), and the first total reflection portion (14) is provided with a second total reflection optical surface (142) at the right upper end thereof, the light incident into the first total reflection portion (14) is totally reflected to the second light outlet portion (13) through the second total reflection optical surface (142).

4. The thick-walled light guide structure of claim 3, wherein: The first total reflection optical surface (141) and the second total reflection optical surface (142) are both reflection planes, the reflection planes are plated with an electroplated aluminum reflection layer; or, the first total reflection optical surface (141) and the second total reflection optical surface (142) are both a plurality of total reflection tooth groove surfaces which are continuously and obliquely distributed, the total reflection tooth groove surfaces are plated with an electroplated aluminum reflection layer.

5. The thick-walled light guide structure of claim 1, wherein the single LED module implements three separate area light emission. The second total reflection part (16) is vertically distributed perpendicularly to the third light exit part (15) and the light entrance part (11), and a third total reflection optical surface (161) is arranged on the left side of the upper end of the second total reflection part (16), through which the light rays emitted by the light entrance part (11) are totally reflected into the second total reflection part (16), and a fourth total reflection optical surface (162) is arranged on the right side of the lower end of the second total reflection part (16), through which the light rays emitted into the second total reflection part (16) are totally reflected to the third light exit part (15).

6. The thick-walled light guide structure of claim 5, wherein: The third total reflection optical surface (161) and the fourth total reflection optical surface (162) are both reflection planes, and an electroplated aluminum reflection layer is plated on the reflection planes; or the third total reflection optical surface (161) and the fourth total reflection optical surface (162) are both a plurality of total reflection tooth groove surfaces which are continuously distributed in an inclined manner, and an electroplated aluminum reflection layer is plated on the total reflection tooth groove surfaces.

7. The thick-walled light guide structure of any one of claims 1-6, wherein the single LED module is configured to emit light in three separate regions. The first light exit optical pattern (121) comprises a plurality of convex blocks (101) which are arrayed and have convex arc surfaces, each row of convex blocks (101) is distributed in a stepped manner, and each column of convex blocks (101) is also distributed in a stepped manner; the shapes and structures of the second light exit optical pattern (131) and the third light exit optical pattern (151) are the same as those of the first light exit optical pattern (121).

8. A thick-walled light guide structure for a single LED module to achieve three separate areas of illumination according to any one of claims 1-6, characterized in that: The right side surface of the light entrance part (11) is a plane; or the right side surface of the light entrance part (11) is provided with a plurality of light entrance convex teeth which are continuously distributed in a vertical direction and used for increasing light entrance uniformity.

9. The thick-walled light guide structure of any one of claims 1-6, wherein the single LED module is configured to emit light in three separate regions. The reflecting surface of the reflector (3) is a smooth arc surface; or the reflecting surface of the reflector (3) is an arc-shaped groove formed by a plurality of reflecting facets.

10. The thick-walled light guide structure of claim 9, wherein: A plurality of reflectors (3) are connected together to form an integral whole, and each reflector (3) corresponds to one LED (21) in the LED module (2).

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