Car lamp

Abstract

The utility model discloses a car lamp which comprises a heat dissipation substrate, a light source assembly arranged on the heat dissipation substrate, a light emitting lens used for emitting light of the light source assembly, and a light cutting mechanism arranged between the light emitting lens and the light source assembly. The light cutting mechanism comprises a reflection light cutting piece and a driving piece connected with the reflection light cutting piece, and the driving piece is used for driving the reflection light cutting piece to be located in a light path of the light source assembly or driving the reflection light cutting piece to move out of the light path of the light source assembly. When the automobile lamp is used for low beam illumination, the light source used for emitting high beam is in a closed state, the problems of resource waste, short service life and heavy heat load caused by long-term lighting of the light source are solved, the reflection light cutting sheet with a reflection function is moved in or out of a light path to replace a traditional light blocking sheet, and the light source is not damaged. The light which is originally blocked by the light blocking piece can be reflected to the light emitting lens to be emitted out to serve as a part of a low-beam light source, and the brightness of low-beam illumination is improved.

Description

Technical Field

[0001] The utility model relates to the field of automobile lighting, and more particularly to an automobile lamp. Background Art

[0002] like Figure 1-Figure 3 As shown, the basic structure of the headlights in the current aftermarket is: a heat dissipation substrate, a low beam light source arranged above the heat dissipation substrate, a high beam light source arranged below the heat dissipation substrate, a light output lens and a light cutting assembly. When low beam lighting is to be achieved, the light blocking piece in the light cutting assembly is located on the light path to block part of the light, thereby achieving low beam light type. When high beam lighting is to be achieved, the light blocking piece in the light cutting assembly moves out of the light path to achieve high beam lighting. However, the light source of the high beam of the above-mentioned headlight is always on, and the light type is switched by moving the light blocking piece in and out of the light output path of the light source. Therefore, when low beam lighting is used, there is a great waste of light from the high beam light source, and the high beam light source is lit for a long time, which affects the service life and increases the heat load burden of the entire headlight. In addition, the brightness of traditional low beam lighting is not enough, and it is difficult to ensure driving safety under special road conditions. Utility Model Content

[0003] The present invention aims to overcome at least one of the above-mentioned defects of the prior art and provide a headlight for solving the problems of the prior art such as short service life of the headlight light source, heavy heat load burden of the entire headlight and insufficient brightness of the low beam.

[0004] The technical solutions adopted by this utility model are as follows:

[0005] A vehicle lamp comprises: a heat dissipation substrate, a light source assembly arranged on the heat dissipation substrate, a light output lens for emitting light from the light source assembly, and a light cutting mechanism arranged between the light output lens and the light source assembly; the light cutting mechanism comprises a reflective light cutting plate and a driving member connected to the reflective light cutting plate, the driving member being used to drive the reflective light cutting plate to be located in the light path of the light source assembly, or to drive the reflective light cutting plate to move out of the light path of the light source assembly; when the reflective light cutting plate is located in the light path of the light source assembly, the reflective light cutting plate reflects and partially transmits the light of the light source assembly and projects a low beam light pattern through the light output lens.

[0006] In one embodiment, the reflective light-cutting sheet includes a first reflective sheet and a second reflective sheet that are arranged in parallel and have a height difference, and the first reflective sheet and the second reflective sheet are connected by a connecting wall.

[0007] In one embodiment, the height difference ranges from 0.45 mm to 0.75 mm.

[0008] In one embodiment, the reflective light-cutting plate is parallel to the mounting surface of the light source on the heat dissipation substrate.

[0009] In one embodiment, both the first reflective sheet and the second reflective sheet are provided with arc-shaped edges, and the arc-shaped edges are both located close to the light output lens.

[0010] In one embodiment, the distance between the vertex of the arc edge connection point of the first reflector and the second reflector on the side where the arc edge is located and the focus of the light output lens is in the range of 0-0.2 mm.

[0011] In one embodiment, the light source assembly includes a low-beam light source arranged above the heat dissipation substrate, and a high-beam light source arranged below the heat dissipation substrate; the low-beam light source includes a low-beam light-emitting body arranged on the heat dissipation substrate, and a low-beam reflector cup for reflecting the light of the low-beam light-emitting body; the high-beam light source includes a high-beam light-emitting body arranged on the heat dissipation substrate, and a high-beam reflector cup for reflecting the light of the high-beam light-emitting body.

[0012] In one embodiment, the light source assembly includes a low beam light source and a high beam light source, both of which are arranged above the heat dissipation substrate, and the mounting surface of the low beam light source is higher than the mounting surface of the high beam light source; the low beam light source includes a low beam light-emitting body arranged on the heat dissipation substrate, and a low beam reflective cup for reflecting the light of the low beam light-emitting body; the high beam light source includes a high beam light-emitting body arranged on the heat dissipation substrate, and a high beam reflective cup for reflecting the light of the high beam light-emitting body, and the top of the high beam reflective cup is not higher than the mounting surface of the low beam light source.

[0013] In one embodiment, the light source assembly includes a focusing light source and a floodlight light source arranged above the heat dissipation substrate; the focusing light source includes a focusing luminous body and a focusing reflective cup for collecting light from the focusing luminous body; the floodlight light source includes a floodlight luminous body and a floodlight reflective cup for collecting light from the floodlight luminous body, and the cup body of the focusing reflective cup is smaller than the cup body of the floodlight reflective cup.

[0014] In one embodiment, the light output lens includes a first lens portion for emitting light from a floodlight source, and a second lens portion for emitting light from a spotlight source.

[0015] Compared with the prior art, the beneficial effects of the present invention include at least:

[0016] When the headlight of the present technical solution is used for low beam lighting, the light source for emitting high beam is in a closed state, thereby avoiding the problems of resource waste, short service life and heavy heat load caused by long-term lighting of the light source. In addition, the present technical solution adopts a reflective light-cutting plate with a reflective function to move in or out of the light path, replacing the traditional light-blocking plate, so that the light originally blocked by the light-blocking plate can be reflected to the light-emitting lens to be emitted as part of the low beam light source, thereby improving the brightness of the low beam lighting. Specifically, when low beam lighting is required, the driving part drives the reflective light-cutting plate to move, so that the reflective light-cutting plate is located in the light path of the light source assembly and reflects a part of the light. At this time, the reflected light is also projected into the low beam lighting area, thereby improving the brightness of the low beam lighting; when high beam lighting is required, the driving part drives the reflective light-cutting plate to move out of the light path of the light source assembly, so that the light emitted by the light source assembly can be fully utilized and emitted from the light-emitting lens as high beam lighting. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 The figure is a schematic diagram of the low beam lighting light path of a vehicle lamp in the prior art.

[0018] Figure 2 The figure is a schematic diagram of the high beam lighting path of a vehicle lamp in the prior art.

[0019] Figure 3 This is a structural view of a light-blocking sheet in the prior art.

[0020] Figure 4 This is a schematic diagram of the low beam lighting path of the vehicle lamp described in Example 1 of the present utility model.

[0021] Figure 5 This is a schematic diagram of the high beam lighting path of the vehicle lamp described in Example 1 of the present utility model.

[0022] Figure 6 This is a structural diagram of the reflective light-cutting plate described in Example 1 of the present utility model.

[0023] Figure 7 This is a structural diagram of the vehicle lamp described in Example 2 of the present utility model.

[0024] Figure 8 This is a schematic diagram of the structure of the vehicle lamp described in Example 3 of the present utility model. Figure 1 .

[0025] Figure 9 This is a schematic diagram of the structure of the vehicle lamp described in Example 3 of the present utility model. Figure 2 .

[0026] Figure 10 This is a schematic diagram of the structure of the vehicle lamp described in Example 3 of the present utility model. Figure 3 .

[0027] Figure 11 This is a structural diagram of the reflective light-cutting plate described in Example 3 of the present utility model.

[0028] Figure 12 for Figure 4 Optical simulation of the situation.

[0029] Figure 13 for Figure 5 Optical simulation of the situation.

[0030] Figure 14 for Figure 1 Optical simulation of the situation.

[0031] Figure 15 for Figure 1 The light blocked by the light shielding sheet in the situation Figure 6 Optical simulation diagram of the light reflected by the reflective light-cutting plate shown.

[0032] Figure numerals: 10, heat dissipation substrate; 20, light source assembly; 21, low beam light source; 211, low beam illuminator; 212, low beam reflector cup; 22, high beam light source; 221, high beam illuminator; 222, high beam reflector cup; 23, focusing light source; 231, focusing illuminator; 232, focusing reflector cup; 24, floodlight light source; 241, floodlight illuminator; 242, floodlight reflector cup; 30, light output lens; 31, first lens portion; 32, second lens portion; 41, reflective light-cutting plate; 411, first reflective plate; 412, second reflective plate; 413, connecting wall; 414, arc edge; 415, vertex of the arc edge connection point; 42, light blocking plate. DETAILED DESCRIPTION

[0033] The drawings in this utility model are for illustrative purposes only and are not to be construed as limiting the scope of this utility model. To better illustrate the following embodiments, some components in the drawings may be omitted, enlarged, or reduced in size, and do not represent the actual dimensions of the products. It is understandable to those skilled in the art that some well-known structures and their descriptions may be omitted from the drawings.

[0034] Example 1

[0035] like Figure 4-Figure 6The vehicle lamp shown includes: a heat dissipation substrate 10, a light source assembly 20 arranged on the heat dissipation substrate 10, a light output lens 30 for emitting light from the light source assembly 20, and a light cutting mechanism arranged between the light output lens 30 and the light source assembly 20; the light cutting mechanism includes a reflective light cutting piece 41 and a driving member connected to the reflective light cutting piece 41, the driving member is used to drive the reflective light cutting piece 41 to be located in the light path of the light source assembly 20, or to drive the reflective light cutting piece 41 to move out of the light path of the light source assembly 20, when the reflective light cutting piece 41 is located in the light path of the light source assembly 20, the reflective light cutting piece 41 reflects and partially transmits the light of the light source assembly 20 and projects a low beam light type through the light output lens 30.

[0036] When the vehicle lamp of this embodiment is operating in low beam mode, the light source for emitting high beam is turned off, thereby avoiding the problems of resource waste, short service life, and heavy heat load caused by the long-term lighting of the light source. In addition, this embodiment uses a reflective light-cutting plate 41 with a reflective function to move in or out of the light path, replacing the traditional light-blocking plate 42. The light originally blocked by the light-blocking plate 42 is reflected to the light-emitting lens 30 to be emitted as part of the low beam light source 21, thereby improving the brightness of the low beam. Specifically, when low beam lighting is required, the driver drives the reflective light-cutting plate 41 to move, so that the reflective light-cutting plate 41 is located in the light path of the light source assembly 20 and reflects a portion of the light. At this time, the reflected light is also projected into the low beam lighting area, thereby improving the brightness of the low beam lighting. When high beam lighting is required, the driver drives the reflective light-cutting plate 41 to move out of the light path of the light source assembly 20, so that all the light emitted by the light source assembly 20 can be fully utilized and emitted from the light-emitting lens 30 as high beam lighting.

[0037] The light source assembly 20 of this embodiment includes a low-beam light source 21 disposed above the heat dissipation substrate 10, and a high-beam light source 22 disposed below the heat dissipation substrate 10; the low-beam light source 21 includes a low-beam light emitter 211 disposed on the heat dissipation substrate 10, and a low-beam reflector 212 for reflecting the light of the low-beam light emitter 211 to the light output lens 30; the high-beam light source 22 includes a high-beam light emitter 221 disposed on the heat dissipation substrate 10, and a high-beam reflector 222 for reflecting the light of the high-beam light emitter 221 to the light output lens 30. Figure 4 As shown, when low beam lighting is required, the low beam light source 21 is turned on and the high beam light source 22 is turned off, and the driving member drives the reflective light cutter 41 to move, so that the reflective light cutter 41 is located in the light path of the low beam light source 21 and reflects a part of the light. At this time, the reflected light is also projected into the low beam lighting area, thereby improving the brightness of the low beam lighting; Figure 5As shown, when high beam lighting is required, the low beam light source 21 and the high beam light source 22 are both turned on, and the driving component drives the reflective light cutter 41 to move out of the light path of the low beam light source 21 and the high beam light source 22, so that the light emitted by the light source assembly 20 can be fully utilized and emitted from the light output lens 30 as high beam lighting.

[0038] Figure 4 In the case shown, the optical simulation diagram is as follows Figure 12 As shown; Figure 5 In the case shown, the optical simulation diagram is as follows Figure 13 shown. Figure 1 In the case shown, the optical simulation diagram is as follows Figure 14 By comparison Figure 12 and Figure 14 , it can be seen that the low beam effect of this embodiment has higher brightness in the top center area. The improved brightness of this embodiment comes from Figure 1 The part of light blocked by the light blocking sheet 42 in the case is reflected by the reflective light cutting sheet 41 of this embodiment and then projected onto the top center area of ​​the illumination area, such as Figure 15 shown.

[0039] The reflective light-cutting sheet 41 in this embodiment includes a first reflective sheet 411 and a second reflective sheet 412 arranged in parallel with a height difference. The first reflective sheet 411 and the second reflective sheet 412 are connected by a connecting wall 413 , which can be a vertical surface or an inclined surface.

[0040] The height difference in this embodiment ranges from 0.45 mm to 0.75 mm.

[0041] In this embodiment, the reflective cutting plate 41 is parallel to the mounting surface of the low beam light source 21 on the heat dissipation substrate 10, that is, the reflective surfaces of the first reflective plate 411 and the second reflective plate 412 are parallel to the upper plane of the heat dissipation substrate 10, thereby blocking part of the light and reflecting the blocked light to form a low beam light with a clear cut-off line and higher brightness.

[0042] In this embodiment, both the first reflective sheet 411 and the second reflective sheet 412 are provided with an arc-shaped edge 414 , and the arc-shaped edge 414 is located close to the light output lens 30 , and the arc-shaped edge 414 serves as a light transmission port.

[0043] In this embodiment, the vertex 415 of the arc edge connection point of the first reflector 411 and the second reflector 412 on the side where the arc edge 414 is located is near the focus of the light output lens 30. Specifically, the distance between the arc edge connection point, i.e., the vertex of the arc edge 414 and the focus of the light output lens 30 is in the range of 0-0.2 mm.

[0044] Example 2

[0045] like Figure 7 As shown, the structure and principle of this embodiment are similar to those of Example 1, except that the light source assembly 20 of this embodiment includes a low-beam light source 21 and a high-beam light source 22, both of which are disposed above the heat dissipation substrate 10, and the mounting surface of the low-beam light source 21 is higher than the mounting surface of the high-beam light source 22. That is, the upper surface of the heat dissipation substrate 10 includes a first stepped surface for arranging the low-beam light source 21 and a second stepped surface for arranging the high-beam light source 22, the first stepped surface being higher than the second stepped surface. The low-beam light source 21 includes a low-beam emitter 211 disposed on the heat dissipation substrate 10 and a low-beam reflector 212 for reflecting light from the low-beam emitter 211. The high-beam light source 22 includes a high-beam emitter 221 disposed on the heat dissipation substrate 10 and a high-beam reflector 222 for reflecting light from the high-beam emitter 221.

[0046] In order to ensure that the light from the low beam light source 21 can be smoothly reflected to the reflective light cutter 41 through the low beam reflector cup 212, the top of the high beam reflector cup 222 in this embodiment is not higher than the installation surface of the low beam light source 21 to avoid interference with the emission of the low beam light.

[0047] Example 3

[0048] like Figures 8-11 As shown, the structure and principle of this embodiment are similar to those of embodiment 1 and embodiment 2, except that the light source assembly 20 described in this embodiment includes a focusing light source 23 and a floodlight light source 24 arranged above the heat dissipation substrate 10; the focusing light source 23 includes a focusing luminous body 231 and a focusing reflective cup 232 for collecting light from the focusing luminous body 231; the floodlight light source 24 includes a floodlight luminous body 241 and a floodlight reflective cup 242 for collecting light from the floodlight luminous body 241, and the cup body of the focusing reflective cup 232 is smaller than the cup body of the floodlight reflective cup 242.

[0049] In addition, the reflective light-cutting sheet 41 in this embodiment is a double light-cutting sheet structure, that is, two reflective light-cutting sheets 41 are arranged side by side, and the two reflective light-cutting sheets 41 in this embodiment are connected to facilitate assembly.

[0050] The light emitting lens 30 in this embodiment includes a first lens portion 31 for emitting light from the floodlight source 24 , and a second lens portion 32 for emitting light from the spotlight source 23 .

[0051] The floodlight source 24 emits light across a wide angle range through the first lens portion 31, while the spotlight source 23 emits high-brightness light through the second lens portion 32, resulting in a wide illumination range and high brightness. Furthermore, since the floodlight source 24 and the spotlight source 23 emit light separately through the first lens portion 31 and the second lens portion 32, the light emitted by the floodlight source 24 and the spotlight source 23 after passing through the light output lens 30 is symmetrical along the optical axis of the light output lens 30, avoiding eccentric or asymmetrical light output and ensuring a good light output effect.

[0052] Obviously, the above embodiments of the present invention are merely examples for the purpose of clearly illustrating the technical solution of the present invention, and are not intended to limit the specific implementation methods of the present invention. Any modifications, equivalent substitutions, and improvements made within the spirit and principles of the claims of the present invention shall be included within the scope of protection of the claims of the present invention.

Claims

1. A vehicle lamp, characterized in that: include: A heat dissipation substrate, a light source assembly arranged on the heat dissipation substrate, a light output lens for emitting light from the light source assembly, and a light cutting mechanism arranged between the light output lens and the light source assembly; the light cutting mechanism includes a reflective light cutting plate and a driving member connected to the reflective light cutting plate, the driving member is used to drive the reflective light cutting plate to be located in the light path of the light source assembly, or to drive the reflective light cutting plate to move out of the light path of the light source assembly. When the reflective light cutting plate is located in the light path of the light source assembly, the reflective light cutting plate reflects and partially transmits the light of the light source assembly and projects a low beam light type through the light output lens.

2. The vehicle lamp according to claim 1, characterized in that The reflective light-cutting sheet includes a first reflective sheet and a second reflective sheet that are arranged in parallel and have a height difference, and the first reflective sheet and the second reflective sheet are connected by a connecting wall.

3. The vehicle lamp according to claim 2, characterized in that: The height difference ranges from 0.45 mm to 0.75 mm.

4. The vehicle lamp according to claim 2, characterized in that The reflective light-cutting plate is parallel to the mounting surface of the light source on the heat dissipation substrate.

5. The vehicle lamp according to claim 2, characterized in that The first reflective sheet and the second reflective sheet are both provided with arc-shaped edges, and the arc-shaped edges are both located on a side close to the light output lens.

6. The vehicle lamp according to claim 5, characterized in that The distance between the vertex of the arc edge connection point of the first reflective sheet and the second reflective sheet on the side where the arc edge is located and the focus of the light output lens is in a range of 0-0.2 mm.

7. The vehicle lamp according to any one of claims 1 to 6, characterized in that: The light source assembly includes a low-beam light source arranged above the heat dissipation substrate, and a high-beam light source arranged below the heat dissipation substrate; the low-beam light source includes a low-beam light-emitting body arranged on the heat dissipation substrate, and a low-beam reflector cup for reflecting the light of the low-beam light-emitting body; the high-beam light source includes a high-beam light-emitting body arranged on the heat dissipation substrate, and a high-beam reflector cup for reflecting the light of the high-beam light-emitting body.

8. The vehicle lamp according to any one of claims 1 to 6, characterized in that: The light source assembly includes a low-beam light source and a high-beam light source, both of which are arranged above the heat dissipation substrate, and the mounting surface of the low-beam light source is higher than the mounting surface of the high-beam light source; the low-beam light source includes a low-beam light-emitting body arranged on the heat dissipation substrate, and a low-beam reflective cup for reflecting the light of the low-beam light-emitting body; the high-beam light source includes a high-beam light-emitting body arranged on the heat dissipation substrate, and a high-beam reflective cup for reflecting the light of the high-beam light-emitting body, and the top of the high-beam reflective cup is not higher than the mounting surface of the low-beam light source.

9. The vehicle lamp according to any one of claims 1 to 6, characterized in that: The light source assembly includes a focusing light source and a floodlight light source arranged above the heat dissipation substrate; the focusing light source includes a focusing luminous body and a focusing reflective cup for collecting light from the focusing luminous body; the floodlight light source includes a floodlight luminous body and a floodlight reflective cup for collecting light from the floodlight luminous body, and the cup body of the focusing reflective cup is smaller than the cup body of the floodlight reflective cup.

10. The vehicle lamp according to claim 9, characterized in that The light-emitting lens includes a first lens portion for emitting light from a floodlight source, and a second lens portion for emitting light from a spotlight source.

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