Unidirectional light-emitting system of lamp

Abstract

The utility model discloses a one-way light-emitting system of a lamp. The one-way light-emitting system comprises a PCB, a row of LED yellow light sources, a row of LED red light sources, a partition plate, a yellow light guide plate component, a red light guide plate, a front frame shell and a rear frame shell, wherein the front frame shell and the rear frame shell are arranged on the top face of the PCB. The partition plate is fixed to the top face of the PCB, a row of light holes arranged at intervals are formed in the bottom end of the partition plate, the LED yellow light sources cannot penetrate through the light holes, and part of light of the LED red light sources can penetrate through the light holes. The yellow light guide plate component comprises a yellow light guide plate, and the light-emitting surface of the yellow light guide plate is higher than that of the red light guide plate; light, incident from the bottom face of the yellow light guide plate, of the LED yellow light source is emitted out of the light-emitting face through the effect of the yellow light guide plate component. A part of light of the LED red light source enters the yellow light guide plate and then is emitted from the light emitting surface under the action of the yellow light guide plate component; and the other part of light of the LED red light source enters the red light guide plate and then is emitted from the light emitting surface of the red light guide plate. When the red light is lighted independently, the red light guide plate and the yellow light guide plate can respectively emit uniform red light.

Description

Technical Field

[0001] The utility model relates to the technical field of vehicle lamps, in particular to a unidirectional light-emitting system for lamps. Background Technique

[0002] In the fierce competition in the automotive market, the shape of vehicle lamps has also become the focus of consumers' attention. A distinctive and design-sense vehicle lamp shape can not only enhance the visual effect of the whole vehicle but also strengthen consumers' sense of brand identity. With the continuous improvement of consumers' requirements for the appearance and performance of automobiles, automobile manufacturers need to continuously innovate and improve lamp technologies, enhance the light-emitting performance and appearance design level of lamps, so as to improve market competitiveness. At the same time, automobile manufacturers should also give priority to the functionality and regulatory feasibility of automotive lamps to ensure the important role of lamps in ensuring driving safety.

[0003] At present, the shape of the light-emitting area of automotive lamps has a development trend of structural flattening and more three-dimensional shapes, and there are increasingly complex animation function requirements such as turning water flow, welcome, start-stop, etc., which requires a relatively novel surface light source structure form. There is a structure of a double-sided light source in the market solutions, which can meet the diversified and functional requirements of lamp shapes, but it has the disadvantage that different color light sources affect each other under specific working conditions. As Figure 1 shown, the two LEDs at the bottom of the double-sided light source structure will affect each other. Although there is a partition between the light guide plate A11 and the light guide plate B12, a part of the LED light of the light guide plate A11 will uncontrollably irradiate the light guide plate B12, and the lighting effect cannot meet the requirements of the main engine.

[0004] Therefore, it is necessary to realize complex functions within the limited space of vehicle lamps, so that the two light sources in the two light guide plates will not affect each other and achieve a uniform lighting effect. Content of the Utility Model

[0005] The purpose of the utility model is to provide a unidirectional light-emitting system for lamps in which two light sources in the limited space of vehicle lamps do not affect each other in two light guide plates.

[0006] In order to achieve the above purpose, the utility model provides the following technical solutions:

[0007] A unidirectional light-emitting system for lamps, comprising a PCB board, a row of LED yellow light sources and a row of LED red light sources respectively arranged on both sides of the PCB board, a partition, a yellow light guide plate component, a red light guide plate, a front frame housing and a rear frame housing respectively arranged on the top surface of the PCB board;

[0008] The rear frame housing, the yellow light guide plate component, the partition, the red light guide plate and the front frame housing are sequentially arranged in the direction from back to front;

[0009] The partition is arranged on the top surface of the PCB board, and a row of light-transmitting holes arranged at intervals are opened at the bottom end of the partition;

[0010] Each LED yellow light source fixed on the top surface of the PCB board is arranged at the interval between two light-transmitting holes, and each LED red light source fixed on the top surface of the PCB board is arranged at the corresponding position of the light-transmitting hole, so that the LED yellow light source cannot pass through the light-transmitting hole, and a part of the light of the LED red light source can pass through the light-transmitting hole;

[0011] The front side of the red light guide plate is the light-emitting surface;

[0012] The yellow light guide plate component includes a yellow light guide plate, and the front side of the yellow light guide plate is its light-emitting surface and is higher than the front side of the red light guide plate; the light incident from the bottom surface of the yellow light guide plate by the LED yellow light source is emitted from the light-emitting surface of the yellow light guide plate through the action of the yellow light guide plate component;

[0013] A part of the light of the LED red light source can pass through the light-transmitting hole and be incident on the yellow light guide plate, and then is emitted from the light-emitting surface of the yellow light guide plate through the action of the yellow light guide plate component; another part of the light of the LED red light source is incident on the red light guide plate and then is emitted from the light-emitting surface of the red light guide plate.

[0014] Further, the top surface of the yellow light guide plate is an inclined surface, and a reflection structure is arranged on the inclined surface;

[0015] The light of the LED yellow light source is incident into the light-transmitting medium of the yellow light guide plate through the condenser on the bottom surface of the yellow light guide plate; after the light reaches the reflection structure in the light-transmitting medium, a reflected light beam that is emitted toward the light-emitting surface is formed under the action of the reflection structure, and the reflected light beam is scattered in the optical pattern on the light-emitting surface.

[0016] Further, the yellow light guide plate component includes a reflection film arranged on the rear frame housing, and the light of the LED yellow light source is incident into the light-transmitting medium of the yellow light guide plate through the condenser on the bottom surface of the yellow light guide plate; after the light reaches the reflection film in the light-transmitting medium, a reflected light beam that is emitted toward the light-emitting surface is formed under the action of the reflection film, and the reflected light beam is scattered in the optical pattern on the light-emitting surface.

[0017] In the above technical solution, the present utility model has the following beneficial effects:

[0018] According to the light-emitting angle design of the LED red light source, the red LED can pass through the partition and be incident into the yellow light guide plate, so that when the red light is lit alone, in addition to the normal light emission of the red light guide plate, the yellow light guide plate can also emit uniform red light to achieve the required lighting effect. And the light reflected by the LED yellow light source when lit alone to the red light guide plate is very limited and has almost no influence. Description of the Drawings

[0019] To more clearly illustrate the technical solutions in the embodiments of the present application or the prior art, the following will briefly introduce the drawings required for use in the embodiments. Obviously, the drawings described below are only some embodiments recorded in the present utility model. For those of ordinary skill in the art, other drawings can also be obtained based on these drawings.

[0020] Figure 1 It is a schematic structural diagram of a vehicle lamp with a double-sided light source structure disclosed in the prior art;

[0021] Figure 2 It is a schematic structural diagram inside the unidirectional light-emitting system of the lamp disclosed in the present utility model;

[0022] Figure 3 It is a schematic cross-sectional structure diagram of the path of the LED red light source disclosed in the present utility model;

[0023] Figure 4 It is a schematic structural diagram of the front side of the partition board disclosed in the present utility model;

[0024] Figure 5 It is a schematic structural diagram of the rear side of the partition board disclosed in the present utility model;

[0025] Figure 6 It is a schematic structural diagram of the yellow light guide plate disclosed in the present utility model;

[0026] Figure 7 It is a schematic structural diagram of one angle of the unidirectional light-emitting system of the lamp disclosed in the present utility model;

[0027] Figure 8 It is a schematic structural diagram of another angle of the unidirectional light-emitting system of the lamp disclosed in the present utility model.

[0028] Reference numerals:

[0029] PCB board 1, LED yellow light source 2, LED red light source 3, partition board 4, light-transmitting hole 41, red light guide plate 6, front frame housing 7, rear frame housing 8, yellow light guide plate 9, condenser 91, reflection structure 92, light guide plate A 11, light guide plate B 12. Detailed implementation manners

[0030] In order to enable those skilled in the art to better understand the technical solutions of the present utility model, the following will further introduce the present utility model in detail in conjunction with the drawings.

[0031] It should be noted that the orientation or positional relationship indicated by the terms "above", "one end", "upper", etc. used in this article is based on the orientation or positional relationship shown in the drawings. It is only for the convenience of describing the present utility model and simplifying the description. Similar expressions are only for the purpose of illustration and do not indicate or imply that the device or element referred to must have a specific orientation, be constructed and operated in a specific orientation. Therefore, it should not be construed as a limitation to the present utility model. In addition, the terms "one part", "two parts", etc. are only used for descriptive purposes and cannot be understood as indicating or implying relative importance.

[0032] As Figure 2-8 shown, a unidirectional light-emitting system for a lamp includes a PCB board 1, a row of LED yellow light sources 2 arranged on the rear side of the PCB board 1 and a row of LED red light sources 3 arranged on the front side, a partition 4, a yellow light guide plate component, a red light guide plate 6, a front frame housing 7 and a rear frame housing 8 respectively arranged on the top surface of the PCB board 1.

[0033] The rear frame housing 8, the yellow light guide plate component, the partition 4, the red light guide plate 6 and the front frame housing 7 are arranged in sequence in the direction from back to front; the space formed by the front frame housing 7, the rear frame housing 8 and the PCB board 1 is used to install the LED yellow light sources 2, the LED red light sources 3, the partition 4, the yellow light guide plate component and the red light guide plate 6. The front frame housing 7 is a frame structure, and its hollow part is for exposing the front side surface of the red light guide plate 6.

[0034] The partition 4 is arranged on the top surface of the PCB board 1, and the partition can be fixedly connected to the front frame housing 7 or the rear frame housing 8. A row of spaced light-transmitting holes 41 are opened at the bottom end of the partition 4. The shape and size of the light-transmitting holes are designed according to the light-emitting angle of each LED red light source 3. Schematically, as Figure 4-5 shown, the light-transmitting holes 41 on the partition 4 are in the shape of a flared opening, and the opening on the rear side surface of the partition 4 is larger than the opening on the front side surface. Each LED yellow light source 2 fixed on the top surface of the PCB board 1 is arranged at the interval between two light-transmitting holes 41, and each LED red light source 3 fixed on the top surface of the PCB board 1 is arranged at the corresponding position of the light-transmitting hole 41, so that the LED yellow light source 2 cannot pass through the light-transmitting hole 41, and a part of the light of the LED red light source 3 can pass through and pass through the light-transmitting hole 41. The LED yellow light sources 2 and the LED red light sources 3 are respectively arranged at the rear side and the front side of the bottom end of the partition 4.

[0035] The front side of the red light guide plate 6 is the light-emitting surface; the yellow light guide plate component includes a yellow light guide plate 9, and the front side of the yellow light guide plate 9 is its light-emitting surface and is higher than the front side of the red light guide plate 6. The front frame housing 7 is a frame structure, and its hollow part is for exposing the light-emitting surfaces of both the yellow light guide plate 9 and the red light guide plate 6 at the same time. The overall shape of the yellow light guide plate 9 is an inverted L shape, thick at the top and thin at the bottom. The yellow light guide plate 9 can place its protruding front side above the red light guide plate 6, and at the same time, the partition and the red light guide plate 6 can cover the thin lower part of the yellow light guide plate 9. The light-emitting surfaces of the yellow light guide plate 9 and the red light guide plate 6 are juxtaposed up and down.

[0036] When the LED yellow light source 2 is lit alone, the light incident from the bottom surface of the yellow light guide plate 9 is emitted from the light-emitting surface of the yellow light guide plate 9 through the action of the yellow light guide plate component. The function of the yellow light guide plate component is to change the path of the light.

[0037] When the LED red light source 3 is lit alone, a part of its light can be incident on the yellow light guide plate 9 through the light-transmitting hole 41 and then be emitted from the light-emitting surface of the yellow light guide plate 9 through the action of the yellow light guide plate component; another part of the light of the LED red light source 3 is incident on the red light guide plate 6 and then is emitted from the light-emitting surface of the red light guide plate 6. The yellow light guide plate 9 and the red light guide plate 6 respectively make the LED yellow light source 2 and the LED red light source 3 emit evenly from the lamp. The function of the yellow light guide plate component is to change the light angle of the yellow light or red light incident on the yellow light guide plate, so that the yellow light or red light is emitted from the front side of the yellow light guide plate.

[0038] If only the partition is used to separate the LED yellow light source 2 and the LED red light source 3, there will be optical defects on the red light guide plate, and there will be a bright line, which is not acceptable to the OEM. The function of the partition is to divide the red light into two parts, one part is emitted from the light-emitting surface of the yellow light guide plate, and the other part is emitted from the light-emitting surface of the red light guide plate, so that the red light is emitted from these two light-emitting surfaces arranged up and down respectively.

[0039] Preferably, the top surface of the yellow light guide plate 9 is an inclined surface and a reflection structure 92 is provided on the inclined surface; the inclined surface is provided at the edge of the rear side of the yellow light guide plate 9.

[0040] The light of the LED yellow light source 2 is incident into the light-transmitting medium of the yellow light guide plate 9 through the condenser 91 on the bottom surface of the yellow light guide plate 9; the light forms a reflected light that is emitted toward the light-emitting surface of the yellow light guide plate 9 under the action of the reflection structure after reaching the reflection structure in the light-transmitting medium, and the reflected light is scattered into the required optical effect in the optical pattern on the light-emitting surface of the yellow light guide plate 9.

[0041] Preferably, the yellow light guide plate component includes a reflective film disposed on the rear frame housing 8, and the light of the LED yellow light source 2 enters the light-transmitting medium of the yellow light guide plate 9 through the condenser on the bottom surface of the yellow light guide plate 9; after the light is in the light-transmitting medium, it forms reflected light that is emitted toward the light-emitting surface of the yellow light guide plate 9 under the action of the reflective film, and the reflected light is scattered in the optical pattern on the light-emitting surface of the yellow light guide plate 9.

[0042] Only some exemplary embodiments of the present invention have been described by way of illustration above. Without doubt, for those of ordinary skill in the art, the described embodiments can be modified in various different ways without departing from the spirit and scope of the present invention. Therefore, the above drawings and description are illustrative in nature and should not be construed as limiting the scope of protection of the claims of the present invention.

Claims

1. A unidirectional lighting system for a lamp, characterized in that: It comprises a PCB board (1), a row of yellow LED light sources (2) and a row of red LED light sources (3) respectively arranged on both sides of the PCB board (1), a partition (4), a yellow light guide plate component, a red light guide plate (6), and a front frame shell (7) and a rear frame shell (8) respectively arranged on the top surface of the PCB board (1); The rear frame housing (8), the yellow light guide plate component, the partition plate (4), the red light guide plate (6) and the front frame housing (7) are arranged in sequence from the back to the front; The partition (4) is arranged on the top surface of the PCB board (1), and a row of light-transmitting holes (41) arranged at intervals are formed at the bottom end of the partition (4); Each LED yellow light source (2) fixed on the top surface of the PCB board (1) is arranged at the interval between two light-transmitting holes (41), and each LED red light source (3) fixed on the top surface of the PCB board (1) is arranged at a corresponding position of the light-transmitting hole (41), so that the LED yellow light source (2) cannot pass through the light-transmitting hole (41), and a part of the light of the LED red light source (3) can pass through the light-transmitting hole (41); The front side surface of the red light guide plate (6) is a light emitting surface; The yellow light guide plate component comprises a yellow light guide plate (9), the front side surface of the yellow light guide plate (9) being its light emitting surface and being higher than the front side surface of the red light guide plate (6); Light from the yellow LED light source (2) incident from the bottom surface of the yellow light guide plate (9) is emitted from the light exit surface of the yellow light guide plate (9) through the action of the yellow light guide plate component; A portion of the light from the LED red light source (3) can be incident on the yellow light guide plate (9) through the light-transmitting hole (41) and then emitted from the light-emitting surface of the yellow light guide plate (9) through the action of the yellow light guide plate component; another portion of the light from the LED red light source (3) can be incident on the red light guide plate (6) and then emitted from the light-emitting surface of the red light guide plate (6).

2. A one-way lighting system for a lamp according to claim 1, characterized in that: The top surface of the yellow light guide plate (9) is an inclined surface and a reflective structure (92) is arranged on the inclined surface; Light from the yellow LED light source (2) is emitted into the light-transmitting medium of the yellow light guide plate (9) through a condenser (91) on the bottom surface of the yellow light guide plate (9); after the light reaches the reflective structure in the light-transmitting medium, it forms reflected light emitted toward the light-emitting surface under the action of the reflective structure (92), and the reflected light is scattered in the optical pattern of the light-emitting surface.

3. The one-way lighting system of a lamp according to claim 1, characterized in that: The yellow light guide plate component comprises a reflective film arranged on the front side of the rear frame shell (8); the light from the yellow LED light source (2) is emitted into the light-transmitting medium of the yellow light guide plate (9) through a condenser on the bottom surface of the yellow light guide plate (9); after the light is in the light-transmitting medium, it forms reflected light emitted toward the light-emitting surface under the action of the reflective film, and the reflected light is scattered in the optical pattern of the light-emitting surface.

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