Reversing lamp and steering lamp mixed optical system
By providing a break-up pattern on the second light guide part of the optical system where the reverse light and turn signal are mixed, the problems of high cost and poor optical uniformity are solved, and more efficient light irradiation and more uniform optical effects are achieved.
Patent Information
- Application Number
- CN202422319189.2
- Authority / Receiving Office
- CN · China
- Patent Type
- Utility models(China)
- Current Assignee / Owner
- Filing Date
- 2024-09-23
- Publication Date
- 2025-06-24
- Estimated Expiration
- 2034-09-23
AI Technical Summary
Existing optical systems that mix reverse lights and turn signals have problems with high cost and poor optical uniformity.
By providing a broken-out pattern on the second light guide part of the hybrid optical system, the structure of the optical system is improved to improve the irradiation efficiency and uniformity of the light.
In reverse light mode, the light emitted by the second LED hits more to the ground, reducing production costs and improving optical uniformity.
Smart Images
Figure CN223020040U_ABST
Abstract
Description
Technical Field
[0001] The utility model relates to the technical field of optical systems, and in particular to an optical system that combines a reversing lamp and a turning lamp. Background Art
[0002] With the booming development of the automotive industry, the shapes of vehicle lights are changing rapidly. Focusing on the field of the shapes of automotive rear lights, many manufacturers will compress the space of automotive rear lights in order to pursue features such as "compactness" and "streamlinedness". In the case of limited space, some functions have to share the light-emitting surface. Therefore, we need to provide an optical system that combines a reversing lamp and a turning lamp to meet the situation where the reversing lamp and the turning lamp share the light-emitting surface.
[0003] Currently, such a hybrid optical system includes: a dual-core LED method and a double-layer inner lamp cover stacking method;
[0004] 1. Dual-core LED method: Dual-core LED + inner lamp cover. The light color of the reversing lamp is white, and the light color of the turning lamp is yellow. A white + yellow dual-core LED is used as the light source. In order to achieve better optical uniformity, an inner lamp cover with a condenser is used as the light guiding component to achieve the lighting effect;
[0005] 2. Double-layer inner lamp cover stacking method: This method has two inner lamp covers, which are arranged in a front-back stacking manner. Both the reversing lamp and the turning lamp have independent light sources. When the reversing lamp is lit, both the front and rear inner lamp covers serve as light guiding components. When the turning lamp is lit, only the front inner lamp cover serves as the light guiding component;
[0006] In summary, both methods have the problems of high cost (i.e., Method 1: Using dual-core LEDs, the cost is high; Method 2: In order to meet the requirements of the reversing lamp's ground illumination brightness, high-power LEDs will be selected, and the cost is high) and poor optical uniformity (Method 1: The single-layer inner lamp cover has a high design difficulty to simultaneously meet the lighting performance of the reversing lamp and the turning lamp, and the optical uniformity is poor; Method 2: In the case of double-layer inner lamp cover stacking, when designing the pattern of the inner lamp cover of the reversing lamp, it is necessary to consider downward light projection, so the pattern angle will be downward, sacrificing some front uniformity, and the optical uniformity is poor). Summary of the Utility Model
[0007] The technical problem to be solved by the utility model is: In order to solve the technical problems of high cost and poor optical uniformity of the existing hybrid optical system, the utility model provides an optical system that combines a reversing lamp and a turning lamp. By improving the structure of the hybrid optical system, the production cost of the entire hybrid optical system can be reduced, and the optical uniformity of the entire hybrid optical system can be improved.
[0008] The technical solution adopted by the present utility model to solve its technical problems is as follows: An optical system combining a reverse light and a turn signal includes: a PCB, a first light guide unit, and a second light guide unit. On one side of the PCB, a first LED and a second LED are provided. The first light guide unit is located on the side of the PCB close to the first LED, and the first light guide unit is disposed opposite to the first LED. The second light guide unit is in an L shape and includes: a first light guide portion and a second light guide portion. The first light guide portion is connected to the second light guide portion. The first light guide portion is disposed opposite to the second LED. The second light guide portion is located on the side of the first light guide unit away from the PCB, and a light-bending pattern is provided on the side of the second light guide portion close to the first light guide unit.
[0009] Thus, in the reverse light mode, through the light-bending pattern provided on the second light guide portion, compared with the existing dual-core LED method and the double-layer inner lamp cover superposition method, this method can make more light emitted by the second LED irradiate on the ground. In this way, the production cost of the entire hybrid optical system can be reduced, and the optical uniformity of the entire hybrid optical system can be improved.
[0010] Furthermore, a plurality of condensers are provided on the side of the first light guide unit close to the first LED. Thus, the light diffused by the first LED is collected to improve the light efficiency.
[0011] Furthermore, a plurality of the first LEDs are provided; among them: the number of the first LEDs is equal to the number of the condensers.
[0012] Furthermore, the plurality of first LEDs are sequentially distributed along the length direction of the PCB, and the plurality of first LEDs are all located on one side of the second LED.
[0013] Furthermore, a plurality of the light-bending patterns are provided. Thus, the plurality of light-bending patterns can make the light passing through the first light guide unit emit parallelly, and a part of the light can be refracted downward better.
[0014] Furthermore, the plurality of light-bending patterns are sequentially distributed along the length direction of the PCB.
[0015] Furthermore, there is a gap between the first light guide unit and the PCB, and there is a gap between the first light guide portion and the PCB. Thus, on the one hand, the light efficiency can be improved. If it is closely attached to the first LED and the second LED, the light efficiency will be poor instead. On the other hand, the stability of the entire hybrid optical system is improved. If it is closely attached to the first LED and the second LED, there is a risk of knocking off the first LED and the second LED.
[0016] Furthermore, there is a gap between the first light guide part and the first light guide unit, and there is a gap between the second light guide part and the first light guide unit. Thus, the stability of the entire hybrid optical system is provided. If the first light guide part and the second light guide part are in close contact with the first light guide unit, powder will be generated due to mutual friction.
[0017] Compared with the prior art, the beneficial effects of the present utility model are:
[0018] In the reverse light mode, through the light-breaking pattern provided on the second light guide part, compared with the existing dual-core LED method and the double-layer inner lamp cover stacking method, this method can make the light emitted by the second LED irradiate more on the ground. In this way, the production cost of the entire hybrid optical system can be reduced, and the optical uniformity of the entire hybrid optical system can be improved. BRIEF DESCRIPTION OF THE DRAWINGS
[0019] The present utility model will be further described below with reference to the drawings and embodiments.
[0020] Figure 1 is a schematic structural diagram of the optical system for mixing reverse lights and turn signals of the present utility model;
[0021] Figure 2 is a top view of the optical system for mixing reverse lights and turn signals of the present utility model;
[0022] Figure 3 is of the present utility model Figure 2 Schematic cross-sectional structure diagram taken along A-A in;
[0023] Figure 4 is a light path diagram when the reverse light of the present utility model is lit;
[0024] Figure 5 is a light path diagram when the turn signal of the present utility model is lit.
[0025] In the figure: 1, PCB; 101, first LED; 102, second LED; 2, first light guide unit; 201, condenser; 3, second light guide unit; 301, first light guide part; 302, second light guide part; 303, light-breaking pattern. DETAILED DESCRIPTION OF THE EMBODIMENTS
[0026] The present utility model will now be described in further detail with reference to the drawings. These drawings are all simplified schematic diagrams, only illustrating the basic structure of the present utility model in a schematic manner, and therefore only showing the components related to the present utility model.
[0027] In the description of the present utility model, it should be understood that the orientation or positional relationship indicated by the terms "center", "longitudinal", "transverse", "length", "width", "thickness", "upper", "lower", "front", "rear", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", "clockwise", "counterclockwise", "axial", "radial", "circumferential", etc. is based on the orientation or positional relationship shown in the drawings, and is only for the convenience of describing the present utility model and simplifying the description, rather than indicating or implying that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation, and thus should not be construed as a limitation to the present utility model. In addition, the features defined as "first" and "second" may explicitly or implicitly include one or more of such features. In the description of the present utility model, unless otherwise stated, the meaning of "a plurality" is two or more.
[0028] In the description of the present utility model, it should be noted that unless otherwise clearly defined and limited, the terms "installation", "connection", and "coupling" should be understood in a broad sense. For example, it may be a fixed connection, a detachable connection, or an integral connection; it may be a mechanical connection or an electrical connection; it may be directly connected or indirectly connected through an intermediate medium, and it may be the communication inside two elements. For those of ordinary skill in the art, the specific meanings of the above terms in the present utility model can be understood according to specific circumstances.
[0029] As Figures 1 to 5 shown, it is the optimal embodiment of the present utility model. The optical system for mixing a reverse light and a turn signal of this embodiment includes: a PCB 1, a first light guide unit 2, and a second light guide unit 3. On one side of the PCB 1, a first LED 101 and a second LED 102 are provided. The first light guide unit 2 is located on the side of the PCB 1 close to the first LED 101, and the first light guide unit 2 is disposed opposite to the first LED 101. The second light guide unit 3 is arranged in an L shape. The second light guide unit 3 includes: a first light guide portion 301 and a second light guide portion 302. The first light guide portion 301 is connected to the second light guide portion 302. The first light guide portion 301 is disposed opposite to the second LED 102. The second light guide portion 302 is located on the side of the first light guide unit 2 away from the PCB 1. On the side of the second light guide portion 302 close to the first light guide unit 2, a light bending pattern 303 is provided. Thus, in the reverse light mode, through the light bending pattern 303 provided on the second light guide portion 302, compared with the existing dual-core LED method and the double-layer inner lamp cover stacking method, this method can make more light emitted by the second LED 102 irradiate on the ground. In this way, the production cost of the entire hybrid optical system can be reduced, and the optical uniformity of the entire hybrid optical system can be improved.
[0030] In other words, without increasing the number of LEDs or the power of the LEDs, by bending the light pattern 303, more light emitted by the second LED 102 can be irradiated onto the ground. In this way, the production cost of the entire hybrid optical system can be reduced, and the optical uniformity of the entire hybrid optical system can be improved.
[0031] Specifically, the relative arrangement of the first light guide unit 2 and the first LED 101 means that the projection of the first LED 101 completely falls on the first light guide unit 2, improving the light efficiency; the relative arrangement of the first light guide portion 301 and the second LED 102 means that the projection of the second LED 102 completely falls on the first light guide portion 301, improving the light efficiency.
[0032] Specifically, the first LED 101 is a reverse light LED, the second LED 102 is a turn signal LED, the first light guide unit 2 is a reverse light guide unit, and the second light guide unit 3 is a turn signal light guide unit.
[0033] In this embodiment, a plurality of condensers 201 are provided on the side of the first light guide unit 2 close to the first LED 101; a plurality of first LEDs 101 are provided; wherein: the number of the first LEDs 101 is equal to the number of the condensers 201; the plurality of first LEDs 101 are sequentially distributed along the length direction of the PCB 1, and the plurality of first LEDs 101 are all located on one side of the second LED 102. Thus, the condenser 201 can collect the light diffused by the first LED 101 and improve the light efficiency.
[0034] In this embodiment, a plurality of light bending patterns 303 are provided; the plurality of light bending patterns 303 are sequentially distributed along the length direction of the PCB 1. Thus, the plurality of light bending patterns 303 can make the light passing through the first light guide unit 2 emit parallelly, and a part of the light can be refracted downward better.
[0035] In this embodiment, there is a gap between the first light guide unit 2 and the PCB 1, and there is a gap between the first light guide portion 301 and the PCB 1; there is a gap between the first light guide portion 301 and the first light guide unit 2, and there is a gap between the second light guide portion 302 and the first light guide unit 2. Thus, on the one hand, the light efficiency can be improved. If it is in close contact with the first LED 101 and the second LED 102, the light efficiency will be poor instead; on the other hand, the stability of the entire hybrid optical system can be improved. If it is in close contact with the first LED 101 and the second LED 102, there is a risk of knocking off the first LED 101 and the second LED 102; the stability of the entire hybrid optical system is provided. If the first light guide portion 301 and the second light guide portion 302 are in close contact with the first light guide unit 2, powder will be generated due to mutual friction.
[0036] The working process of the reverse light of the present utility model is as Figure 4As shown, when the first LED 101 emits light, the light enters the first light guide unit 2 through the condenser 201, exits from the first light guide unit 2, and then passes through the light-bending pattern 303. Part of the light is refracted downward and exits through the second light guide portion 302 (i.e., this part of the light irradiates the ground), and the other part of the light directly exits through the second light guide portion 302 (i.e., this part of the light directly exits through the light-emitting surface).
[0037] The working process of the turn signal of the present utility model is as follows: As Figure 5 shown, when the second LED 102 emits light, the light enters the first light guide portion 301, and after being refracted by the second light guide portion 302, it is emitted outward (i.e., the light directly exits through the light-emitting surface).
[0038] In summary, in the reverse light mode of the present utility model, through the light-bending pattern 303 provided on the second light guide portion 302, compared with the existing dual-core LED method and the double-layer inner lamp cover stacking method, this method can make more light emitted by the second LED 102 irradiate the ground. Thus, the production cost of the entire hybrid optical system can be reduced, and the optical uniformity of the entire hybrid optical system can be improved.
[0039] The above is based on the ideal embodiments of the present utility model as inspiration. Through the above description, relevant staff can completely make various changes and modifications without departing from the technical idea of this utility model. The technical scope of this utility model is not limited to the content in the specification, and its technical scope must be determined according to the scope of the claims.
Claims
1. An optical system combining a reverse light and a turn signal light, characterized in that: include: A PCB (1), wherein a first LED (101) and a second LED (102) are arranged on one side of the PCB (1); A first light guide unit (2), the first light guide unit (2) being located on a side of the PCB (1) close to the first LED (101), and the first light guide unit (2) and the first LED (101) being arranged opposite to each other; A second light guide unit (3), wherein the second light guide unit (3) is arranged in an L shape, and the second light guide unit (3) comprises: A first light guide portion (301) and a second light guide portion (302), wherein the first light guide portion (301) is connected to the second light guide portion (302), the first light guide portion (301) and the second LED (102) are arranged opposite to each other, the second light guide portion (302) is located on a side of the first light guide unit (2) away from the PCB (1), and a light-bending pattern (303) is arranged on a side of the second light guide portion (302) close to the first light guide unit (2).
2. The optical system of the hybrid reversing light and turn signal light according to claim 1, characterized in that: A plurality of light collectors (201) are arranged on a side of the first light guide unit (2) close to the first LED (101).
3. The optical system of the hybrid reversing light and turn signal light according to claim 2, characterized in that: A plurality of the first LEDs (101) are provided; Wherein: the number of the first LEDs (101) is equal to the number of the condensers (201).
4. The optical system of the hybrid reversing light and turn signal light according to claim 3, characterized in that: The plurality of first LEDs (101) are distributed in sequence along the length direction of the PCB (1), and the plurality of first LEDs (101) are all located on one side of the second LED (102).
5. The optical system of the hybrid reversing light and turn signal light according to claim 1, characterized in that: The light-breaking patterns (303) are provided in plurality.
6. The optical system of the hybrid reversing light and turn signal light according to claim 1, characterized in that: The plurality of light-bending patterns (303) are distributed in sequence along the length direction of the PCB (1).
7. The optical system of the hybrid reversing light and turn signal light according to claim 1, characterized in that: There is a gap between the first light guide unit (2) and the PCB (1), and there is a gap between the first light guide portion (301) and the PCB (1).
8. The optical system of the hybrid reversing light and turn signal light according to claim 1, characterized in that: There is a gap between the first light guide portion (301) and the first light guide unit (2), and there is a gap between the second light guide portion (302) and the first light guide unit (2).