Low-cost automobile rear combination lamp structure

Abstract

The low-cost automobile rear combination lamp structure is characterized in that a first light guide is located on one side of a PCBA, a second light guide and a third light guide are located on the other side of the PCBA, and a plurality of first LEDs emitting light to the first light guide are integrated on the side, close to the first light guide, of the PCBA; a plurality of second LEDs emitting light to the second light guide and a plurality of third LEDs emitting light to the third light guide are integrated on the side, close to the second light guide and the third light guide, of the PCBA. By the adoption of the low-cost automobile rear combination lamp structure, the first LED, the second LED and the third LED which send light to the first light guide, the second light guide and the third light guide respectively are integrated on one PCBA, so that the problem that an existing automobile rear combination lamp needs a plurality of PCBAs is solved, the production cost is effectively reduced, no wire harness exists in the lamp, and the lamp is convenient to use. And automatic production is easy to realize, and the production efficiency and the stability of product quality are improved.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, in particular to a low-cost automobile rear combination lamp structure. Background Art

[0002] The rear combination lights of automobiles are generally used mainly as signal lights to inform the rear driver of the position, steering, braking, reversing and other related driving information of the vehicle in front.

[0003] Please refer to the Chinese utility model patent with announcement number CN219177535U. Since the rear combination lamp of an automobile integrates multiple functions such as turn signals, reversing lights, fog lights, etc., different PCBAs with integrated LEDs need to be configured for different lamps, which not only leads to high costs, but also different PCBAs need to be connected through wiring harnesses, which can usually only be done manually, and automated production is difficult to achieve.

[0004] Solving the above problems has become a top priority. Utility Model Content

[0005] In order to solve the technical problem that the existing automobile rear combination lamp needs to be equipped with multiple PCBAs, the utility model provides a low-cost automobile rear combination lamp structure.

[0006] The technical solution is as follows:

[0007] The first aspect of the present application relates to a low-cost automotive rear combination lamp structure, comprising a component installation cavity formed by a rear cover and a mask, wherein a main bracket, a first light guide, a second light guide, a third light guide and a PCBA are installed in the component installation cavity;

[0008] The first light guide is located on one side of the PCBA, the second light guide and the third light guide are located on the other side of the PCBA, a side of the PCBA close to the first light guide is integrated with a plurality of first LEDs that emit light toward the first light guide, and a side of the PCBA close to the second light guide and the third light guide is integrated with a plurality of second LEDs that emit light toward the second light guide and a plurality of third LEDs that emit light toward the third light guide.

[0009] By adopting the above low-cost automobile rear combination lamp structure, a first LED, a second LED and a third LED are integrated on one PCBA for sending light to the first light guide, the second light guide and the third light guide respectively, thereby solving the problem that the existing automobile rear combination lamp requires multiple PCBAs, which not only effectively reduces the production cost, but also there is no wiring harness inside the lamp, which is easy to realize automated production, and improves the production efficiency and the stability of product quality.

[0010] In some embodiments, a connector is integrated on the PCBA, all PIN pins of the connector extend in a direction close to the back cover, and each PIN pin is inserted into the same mounting positioning block. A mounting positioning hole matching the mounting positioning block is provided on the back cover, and the mounting positioning block is embedded in the mounting positioning hole. The outer ends of each PIN pin extend into the plug-in sheath of the back cover.

[0011] In some embodiments, the second light guide, the third light guide, the first light guide and the PCBA are all located on a side of the main bracket away from the mask, and the main bracket is provided with a first through hole for a first light emitting segment of the first light guide to pass through, a second through hole for a second light emitting segment of the second light guide to pass through, and a third through hole for a third light emitting segment of the third light guide to pass through, the outer end face of the first light emitting segment is the first light emitting end face directly facing the mask, the outer end face of the second light emitting segment is the second light emitting end face directly facing the mask, and the outer end face of the third light emitting segment is the third light emitting end face directly facing the mask.

[0012] In some embodiments, the first via hole protrudes outwardly to form a first annular boss, and an annular gap is left between the circumferential outer wall of the first light output segment and the first annular boss; the second via hole protrudes outwardly to form a second annular boss, and an annular gap is left between the circumferential outer wall of the second light output segment and the second annular boss; the third via hole protrudes outwardly to form a third annular boss, and an annular gap is left between the circumferential outer wall of the third light output segment and the third annular boss.

[0013] In some embodiments, the mask includes a mask body made of a light-shielding plastic material and a first light-transmitting plate, a second light-transmitting plate, and a third light-transmitting plate all made of a light-transmitting plastic material. The mask body, the first light-transmitting plate, the second light-transmitting plate, and the third light-transmitting plate are integrally formed using a multi-color injection molding process. The first light-emitting end face faces the first light-transmitting plate, the second light-emitting end face faces the second light-transmitting plate, and the third light-emitting end face faces the third light-transmitting plate.

[0014] In some embodiments, the outer surface of the third light-transmitting plate is a planar structure, a portion of the inner surface of the third light-transmitting plate is a fog lamp area with a planar structure, and the remaining portion is a retro-reflective area formed with a reflective optical pattern, and the projection of the third light-emitting end face on the third light-transmitting plate is the fog lamp area.

[0015] In some embodiments, the first light emitting section, the second light emitting section and the third light emitting section are all parallel to the PCBA, the inner end of the first light emitting section has a first light input section extending toward the PCBA, the end of the first light input section away from the first light emitting section has a first light concentrator corresponding to each first LED one by one, and the light emitting end face of each first LED is respectively opposite to the light input end face of the corresponding first light concentrator, the inner end of the second light emitting section has a second light input section extending toward the PCBA, the end of the second light input section away from the second light emitting section has a second light concentrator corresponding to each second LED one by one, and the light output end face of each second LED is respectively opposite to the light input end face of the corresponding second light concentrator, the inner end of the third light emitting section has a third light input section extending toward the PCBA, the end of the third light input section away from the third light emitting section has a third light concentrator corresponding to each third LED one by one, and the light output end face of each third LED is respectively opposite to the light input end face of the corresponding third light concentrator.

[0016] In some embodiments, the outer chamfer at the junction of the first light input segment and the first light output segment forms a first reflective surface, and the first reflective surface is molded with a first optical pattern; the outer chamfer at the junction of the second light input segment and the second light output segment forms a second reflective surface, and the second reflective surface is molded with a second optical pattern; the outer chamfer at the junction of the third light input segment and the third light output segment forms a third reflective surface, and the third reflective surface is molded with a third optical pattern.

[0017] In some embodiments, a light leakage prevention bracket is installed in the component installation cavity, the light leakage prevention bracket is located between the second light guide and the third light guide, and the second light guide is located on a side of the light leakage prevention bracket away from the PCBA. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a structural diagram of a rear combination lamp of a car from one viewing angle;

[0019] Figure 2 This is a structural diagram of the rear combination lamp of an automobile from another perspective;

[0020] Figure 3 A schematic diagram of the structure for removing the mask of the rear combination lamp of an automobile;

[0021] Figure 4 Schematic diagram of the structure for removing the mask and rear cover of the rear combination lamp of the vehicle;

[0022] Figure 5 It is a schematic diagram of the coordination relationship among the PCBA, the light leakage prevention bracket, the first light guide and the third light guide;

[0023] Figure 6 It is a structural diagram of PCBA;

[0024] Figure 7is a schematic structural diagram of a first light guide;

[0025] Figure 8 is a schematic structural diagram of a second light guide;

[0026] Fig. 9 is a schematic structural diagram of a third light guide;

[0027] Fig.10 is a schematic diagram of the structure of the mask;

[0028] Fig.11 It is a schematic diagram of the structure of the back cover. DETAILED DESCRIPTION

[0029] The utility model is further described below in conjunction with embodiments and drawings.

[0030] like Figure 1-Figure 11 As shown, a low-cost automobile rear combination lamp structure mainly includes a rear cover 1, a mask 2, a main bracket 3, a first light guide 7, a second light guide 5, a third light guide 6 and a PCBA 8. The rear cover 1 and the mask 2 form a component installation cavity, and the main bracket 3, the first light guide 7, the second light guide 5, the third light guide 6 and the PCBA 8 are all installed in the component installation cavity.

[0031] In this embodiment, the first light guide 7 is located on one side of the PCBA 8, the second light guide 5 and the third light guide 6 are located on the other side of the PCBA 8, a plurality of first LEDs 8a emitting light to the first light guide 7 are integrated on the side of the PCBA 8 close to the first light guide 7, and a plurality of second LEDs 8b emitting light to the second light guide 5 and a plurality of third LEDs 8c emitting light to the third light guide 6 are integrated on the side of the PCBA 8 close to the second light guide 5 and the third light guide 6. That is, the light emitted by each first LED 8a is emitted to the first light-incoming section 7b of the first light guide 7, the light emitted by each second LED 8b is emitted to the second light-incoming section 5b of the second light guide 5, and the light emitted by each third LED 8c is emitted to the third light-incoming section 6b of the third light guide 6.

[0032] Therefore, this embodiment solves the problem that the existing automobile rear combination lamp requires multiple PCBAs by being able to simultaneously send light to the first light guide 7, the second light guide 5 and the third light guide 6 on one PCBA 8. This not only effectively reduces the production cost, but also there is no wiring harness inside the lamp, which makes it easy to realize automated production, thereby improving production efficiency and the stability of product quality.

[0033] See also Figure 2 , Figure 6 and Fig.11, a connector 8d is integrated on PCBA8, all PIN pins 8d1 of the connector 8d extend toward the direction close to the rear cover 1, and each PIN pin 8d1 is inserted into the same PIN positioning block 8d2, and a mounting positioning hole 1a matching with the PIN positioning block 8d2 is provided on the rear cover 1, and the PIN positioning block 8d2 is embedded in the mounting positioning hole 1a, and the outer end of each PIN pin 8d1 extends into the plug-in sleeve 1b of the rear cover 1, that is, the PIN positioning block 8d2 and the mounting positioning hole 1a are positioned and matched. Therefore, when the internal parts are assembled with the rear cover 1, the connector 8d is designed as one of the positioning structures to ensure the position of the PIN pin 8d1 and the plug-in sleeve 1b, which can effectively avoid the difficulty of assembling the whole vehicle connector.

[0034] See also Figure 3-Figure 5 and Fig.10 , an anti-light leakage bracket 4 is also installed in the component installation cavity, and the anti-light leakage bracket 4 is located between the second light guide 5 and the third light guide 6. The second light guide 5 is located on the side of the anti-light leakage bracket 4 away from PCBA8, which can achieve physical isolation of the second light guide 5 and the third light guide 6, and avoid the problem of light leakage between the second light guide 5 and the third light guide 6. At the same time, PCBA8 blocks the first light guide 7 on one side and blocks the second light guide 5 and the third light guide 6 on the other side, thereby achieving the purpose of physical anti-light leakage. Therefore, through the cooperation of PCBA8 and the anti-light leakage bracket 4, the problem of light leakage between the first light guide 7, the second light guide 5, and the third light guide 6 can be completely solved, and the design is ingenious, simple and reliable. It should be pointed out that the anti-light leakage bracket 4 is made of opaque plastic material, and the substrate of PCBA8 is also opaque.

[0035] In this embodiment, the first light guide 7, the second light guide 5, the third light guide 6 and the PCBA 8 are all located on the side of the main bracket 3 away from the mask 2. The main bracket 3 is provided with a first through hole 3a, a second through hole 3b and a third through hole 3c, wherein the outer end of the first light emitting segment 7a of the first light guide 7 slightly passes through the first through hole 3a, the outer end of the second light emitting segment 5a of the second light guide 5 slightly passes through the second through hole 3b, and the outer end of the third light emitting segment 6a of the third light guide 6 slightly passes through the third through hole 3c. Through such a design, it can also play a role in preventing light leakage.

[0036] Furthermore, the first via hole 3a protrudes outward to form a first annular boss 3d, an annular gap is left between the circumferential outer wall of the first light-emitting section 7a and the first annular boss 3d, the second via hole 3b protrudes outward to form a second annular boss 3e, an annular gap is left between the circumferential outer wall of the second light-emitting section 5a and the second annular boss 3e, the third via hole 3c protrudes outward to form a third annular boss 3f, and an annular gap is left between the circumferential outer wall of the third light-emitting section 6a and the third annular boss 3f. The requirements of the shape are met by the above-mentioned outwardly protruding first annular boss 3d, second annular boss 3e and third annular boss 3f, and the design of leaving annular gaps between the corresponding first light-emitting section 7a, second light-emitting section 5a and third light-emitting section 6a can avoid friction and vibration between the hands, thereby avoiding the problem of abnormal noise.

[0037] In this embodiment, the outer end face of the first light emitting segment 7a is the first light emitting end face 7a1 directly facing the mask 2, the outer end face of the second light emitting segment 5a is the second light emitting end face 5a1 directly facing the mask 2, and the outer end face of the third light emitting segment 6a is the third light emitting end face 6a1 directly facing the mask 2.

[0038] Correspondingly, the mask 2 includes a mask body 2a made of light-shielding plastic material, and a first light-transmitting plate 2b, a second light-transmitting plate 2c, and a third light-transmitting plate 2d all made of light-transmitting plastic material, the first light-emitting end face 7a1 faces the first light-transmitting plate 2b, the second light-emitting end face 5a1 faces the second light-transmitting plate 2c, and the third light-emitting end face 6a1 faces the third light-transmitting plate 2d. Through such a design, not only can the light effect of the first light-transmitting plate 2b, the second light-transmitting plate 2c, and the third light-transmitting plate 2d be ensured when they are lit, but the opaque mask body 2a can also play a certain anti-light-channeling effect, and at the same time can also play a role in covering up the ugliness of the internal parts.

[0039] Furthermore, the mask body 2a, the first light-transmitting plate 2b, the second light-transmitting plate 2c and the third light-transmitting plate 2d are integrally formed using a multi-color injection molding process, thereby ensuring the stability and reliability of the overall structure and avoiding problems such as cracks and poor bonding.

[0040] In this embodiment, the outer surface of the third light-transmitting plate 2d is a planar structure. At the same time, a part of the inner surface of the third light-transmitting plate 2d is a fog lamp area 2d1 with a planar structure. The projection of the third light-emitting end surface 6a1 on the third light-transmitting plate 2d is the fog lamp area 2d1, so as to facilitate the transmission of light emitted from the third light-emitting end surface 6a1 to the third light-transmitting plate 2d to ensure brightness. The remaining part is a retro-reflective area 2d2 formed with a reflective optical pattern, so that it can reflect light when it is emitted from the following vehicle, thereby improving driving safety at night.

[0041] Furthermore, the retro-reflective region 2d2 surrounds the fog lamp region 2d1 to increase the area of ​​the retro-reflective region 2d2 as much as possible.

[0042] In this embodiment, the first light-emitting section 7a, the second light-emitting section 5a and the third light-emitting section 6a are all parallel to the PCBA 8. The first light-incoming section 7b extends from the inner end of the first light-emitting section 7a toward the PCBA 8, and the first light-incoming section 7b has a first concentrator 7c corresponding to each first LED 8a at one end away from the first light-emitting section 7a, and the light-emitting end face of each first LED 8a is respectively opposite to the light-incoming end face of the corresponding first concentrator 7c, so that the light emitted by each first LED 8a can be retained in the first light guide 7 as much as possible, thereby improving the light-emitting brightness of the first light-emitting end face 7a1.

[0043] Similarly, the second light input section 5b extends from the inner end of the second light output section 5a toward PCBA8, and the end of the second light input section 5b away from the second light output section 5a has a second concentrator 5c corresponding to each second LED 8b one by one, and the light output end face of each second LED 8b is opposite to the light input end face of the corresponding second concentrator 5c, so that as much light emitted by each second LED 8b as possible can be retained in the second light guide 5, thereby improving the light output brightness of the second light output end face 5a1.

[0044] Similarly, the third light input section 6b extends from the inner end of the third light output section 6a toward PCBA8, and the end of the third light input section 6b away from the third light output section 6a has a third concentrator 6c corresponding to each third LED 8c one by one, and the light output end face of each third LED 8c is opposite to the light input end face of the corresponding third concentrator 6c, so that as much light emitted by each third LED 8c as possible can be retained in the third light guide 6, thereby improving the light output brightness of the third light output end face 6a1.

[0045] It should be pointed out that the structures of the first concentrator 7c, the second concentrator 5c and the third concentrator 6c are prior art, please refer to the Chinese patent with announcement number CN115164119A.

[0046] See also Figure 7-Figure 9The first light-incoming section 7b and the first light-emitting section 7a are connected at the outer chamfer to form a first reflective surface 7d, on which a first optical pattern is formed; the second light-incoming section 5b and the second light-emitting section 5a are connected at the outer chamfer to form a second reflective surface 5d, on which a second optical pattern is formed; the third light-incoming section 6b and the third light-emitting section 6a are connected at the outer chamfer to form a third reflective surface 6d, on which a third optical pattern is formed. Through the design provided, the light of the first light-incoming section 7b, the second light-incoming section 5b and the third light-incoming section 6b can be directed as much as possible to the first light-emitting section 7a, the second light-emitting section 5a and the third light-incoming section 6b, thereby improving the light output brightness of the first light-emitting end surface 7a1, the second light-emitting end surface 5a1 and the third light-emitting end surface 6a1.

[0047] Furthermore, the outer end of the second light emitting section 5a is widened to form an extension section 5a2. In order to enhance the light emitting brightness of the second light emitting end surface 5a1 corresponding to the extension section 5a2, an enhanced reflective optical pattern 5a3 is formed on the inner end surface of the extension section 5a2.

[0048] In this embodiment, the second light guide 5 is a reversing light guide, the third light guide 6 is a fog light guide, and the first light guide 7 is a rear position light turn signal guide.

[0049] Finally, it should be noted that the above description is only a preferred embodiment of the present invention. Under the guidance of the present invention, ordinary technicians in this field can make a variety of similar expressions without violating the purpose and claims of the present invention, and such changes fall within the scope of protection of the present invention.

Claims

1. A low-cost automotive rear combination lamp structure, comprising a component mounting cavity formed by a rear cover and a mask, characterized in that: The component installation cavity is provided with a main bracket, a first light guide, a second light guide, a third light guide and a PCBA; The first light guide is located on one side of the PCBA, the second light guide and the third light guide are located on the other side of the PCBA, a side of the PCBA close to the first light guide is integrated with a plurality of first LEDs that emit light toward the first light guide, and a side of the PCBA close to the second light guide and the third light guide is integrated with a plurality of second LEDs that emit light toward the second light guide and a plurality of third LEDs that emit light toward the third light guide.

2. The low-cost automobile rear combination lamp structure according to claim 1, characterized in that: The PCBA is integrated with a connector, all PIN pins of the connector extend in a direction close to the rear cover, and each PIN pin is inserted into the same PIN positioning block. The rear cover is provided with an installation positioning hole adapted to the PIN positioning block, the PIN positioning block is embedded in the installation positioning hole, and the outer end of each PIN pin extends into the plug-in sheath of the rear cover.

3. The low-cost automobile rear combination lamp structure according to claim 1, characterized in that: The second light guide, the third light guide, the first light guide and the PCBA are all located on a side of the main bracket away from the mask. The main bracket is provided with a first through hole for a first light emitting segment of the first light guide to pass through, a second through hole for a second light emitting segment of the second light guide to pass through, and a third through hole for a third light emitting segment of the third light guide to pass through. The outer end face of the first light emitting segment is the first light emitting end face facing the mask, the outer end face of the second light emitting segment is the second light emitting end face facing the mask, and the outer end face of the third light emitting segment is the third light emitting end face facing the mask.

4. The low-cost automobile rear combination lamp structure according to claim 3, characterized in that: The first via hole protrudes outwardly to form a first annular boss, and an annular gap is left between the circumferential outer wall of the first light output section and the first annular boss; the second via hole protrudes outwardly to form a second annular boss, and an annular gap is left between the circumferential outer wall of the second light output section and the second annular boss; the third via hole protrudes outwardly to form a third annular boss, and an annular gap is left between the circumferential outer wall of the third light output section and the third annular boss.

5. The low-cost automobile rear combination lamp structure according to claim 3, characterized in that: The mask includes a mask body made of light-shielding plastic material and a first light-transmitting plate, a second light-transmitting plate and a third light-transmitting plate all made of light-transmitting plastic material. The mask body, the first light-transmitting plate, the second light-transmitting plate and the third light-transmitting plate are integrally formed using a multi-color injection molding process. The first light-emitting end face faces the first light-transmitting plate, the second light-emitting end face faces the second light-transmitting plate, and the third light-emitting end face faces the third light-transmitting plate.

6. The low-cost automobile rear combination lamp structure according to claim 5, characterized in that: The outer surface of the third light-transmitting plate is a planar structure, a portion of the inner surface of the third light-transmitting plate is a fog lamp area with a planar structure, and the remaining portion is a retro-reflective area formed with a reflective optical pattern, and the projection of the third light-emitting end face on the third light-transmitting plate is the fog lamp area.

7. The low-cost automobile rear combination lamp structure according to claim 3, characterized in that: The first light emitting section, the second light emitting section and the third light emitting section are all parallel to the PCBA, the inner end of the first light emitting section has a first light input section extending toward the PCBA, the end of the first light input section away from the first light emitting section has a first light concentrator corresponding to each first LED one by one, and the light emitting end face of each first LED is respectively opposite to the light input end face of the corresponding first light concentrator, the inner end of the second light emitting section has a second light input section extending toward the PCBA, the end of the second light input section away from the second light emitting section has a second light concentrator corresponding to each second LED one by one, and the light output end face of each second LED is respectively opposite to the light input end face of the corresponding second light concentrator, the inner end of the third light emitting section has a third light input section extending toward the PCBA, the end of the third light input section away from the third light emitting section has a third light concentrator corresponding to each third LED one by one, and the light output end face of each third LED is respectively opposite to the light input end face of the corresponding third light concentrator.

8. The low-cost automobile rear combination lamp structure according to claim 7, characterized in that: The outer chamfer at the junction of the first light input section and the first light output section forms a first reflective surface, and a first optical pattern is formed on the first reflective surface; the outer chamfer at the junction of the second light input section and the second light output section forms a second reflective surface, and a second optical pattern is formed on the second reflective surface; the outer chamfer at the junction of the third light input section and the third light output section forms a third reflective surface, and a third optical pattern is formed on the third reflective surface.

9. The low-cost automobile rear combination lamp structure according to claim 1, characterized in that: An anti-light leakage bracket is installed in the component installation cavity, the anti-light leakage bracket is located between the second light guide and the third light guide, and the second light guide is located on a side of the anti-light leakage bracket away from the PCBA.

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