Light-emitting unit, vehicle lamp and processing method of light-emitting unit

Abstract

The application discloses a light-emitting unit, a vehicle lamp and a processing method of the light-emitting unit. The light-emitting unit comprises a bottom plate, a light-emitting chip, a light-transmitting piece and a surrounding support. The light-emitting chip is arranged on the surface of the bottom plate. The light-transmitting piece covers the surface of the light-emitting chip. The surrounding support is arranged on the surface of the bottom plate provided with the light-emitting chip and surrounds the periphery of the light-transmitting piece. The surface of the surrounding support away from the surface of the bottom plate is recorded as a first surface, and the light-transmitting piece covers and shields the first surface. Part of the first surface opposite to the light-transmitting piece will also emit light. When multiple light-emitting units are arranged at intervals and lighted up, the spacing between the light-emitting areas of adjacent light-emitting units is reduced, the continuity of the light-emitting light efficiency of the multiple light-emitting units when lighted up simultaneously is improved, the physical spacing between the two adjacent light-emitting units does not need to be reduced to improve the continuity of overall light-up, the overall heat accumulation of the LED matrix lamp panel is not improved, and the service life is improved and the maintenance cost is reduced.

Description

Technical Field

[0001] This application relates to the field of vehicle lighting technology, and in particular to a light-emitting unit, a vehicle lamp, and a method for processing the light-emitting unit. Background Technology

[0002] With the continuous development of the automotive industry and the increasing aesthetic demands of consumers, automotive lighting is no longer limited to traditional functional lighting tools. Higher requirements are placed on the uniformity and brightness of the lighting. In existing technologies, when the LED matrix in a headlight is lit, the dark areas between the LED beads are very obvious, the overall light-emitting surface of the LED matrix has a strong sense of fragmentation, and the lighting continuity and uniformity are poor. To solve the problem of strong light fragmentation, one approach is to minimize the light-emitting area of ​​individual LEDs and reduce the spacing between LEDs (i.e., increase the LED density per unit area). However, reducing the spacing between adjacent LED beads leads to strong heat accumulation in the LED matrix light panel, reducing its lifespan, requiring frequent replacement of the light panel or the configuration of complex heat dissipation structures, encroaching on the internal layout space of the headlight, hindering the integration of headlight functions, and increasing costs.

[0003] In addition, to solve the problem of strong light-emitting segmentation, the luminous power of the LED can be increased as much as possible to visually reduce the dark area between the LED beads, but this will result in strong and dazzling brightness of the luminous surface. Summary of the Invention

[0004] This application aims to solve at least one of the technical problems existing in the prior art, and to provide a light-emitting unit, a vehicle lamp, and a method for processing the light-emitting unit.

[0005] According to one aspect of this application, a light-emitting unit is provided, including a base plate, a light-emitting chip, a light-transmitting element, and a enclosure bracket; the light-emitting chip is disposed on the surface of the base plate; the light-transmitting element covers the surface of the light-emitting chip; the enclosure bracket is disposed on the surface of the base plate on which the light-emitting chip is disposed, and surrounds the periphery of the light-transmitting element; the surface of the enclosure bracket away from the base plate is referred to as the first surface, and the light-transmitting element covers and blocks the first surface.

[0006] In one embodiment, the light-transmitting element includes a first filling portion and a second filling portion. The first filling portion covers the surface of the light-emitting chip, and the second filling portion covers the side of the first filling portion away from the light-emitting chip. The surface of the first filling portion away from the light-emitting chip is a curved surface that is recessed toward the light-emitting chip, and the refractive index of the first filling portion is greater than the refractive index of the second filling portion.

[0007] In one embodiment, the first filling portion is housed inside the enclosure bracket; the enclosure bracket has a light-emitting opening on the side away from the light-emitting chip, and the edge of the light-emitting opening coincides with the surface edge of the first filling portion away from the light-emitting chip.

[0008] In one embodiment, the enclosure support has an inner wall, and the first filling portion fills the space between the inner walls; the inner wall has a first wall surface and a second wall surface, the second wall surface is disposed between the first wall surface and the base plate, the first wall surface is parallel to the main light emission direction of the light-emitting unit, and the second wall surface is angularly disposed with respect to the main light emission direction of the light-emitting unit.

[0009] In one embodiment, in the main light-emitting direction of the light-emitting unit, the size of the first wall is h1 and the size of the second wall is h2, satisfying: 6≤h2 / h1≤7.

[0010] In one embodiment, the distance between the first surface and the base plate in the light-emitting direction of the light-emitting unit gradually increases in the direction from the center of the light-emitting unit toward the edge.

[0011] In one embodiment, the first surface has a black coating.

[0012] According to another aspect of this application, a vehicle lamp is provided, including any of the light-emitting units described above.

[0013] According to another aspect of this application, a method for processing a light-emitting unit is provided, comprising the following steps: bonding a light-emitting chip to a die-bonding area on a substrate and heating and baking it to fix the light-emitting chip; connecting bonding wires to electrically connect the light-emitting chip to an electrode area on the substrate; preheating and dehumidifying the internal area of ​​the enclosure bracket and the first surface; filling the internal area of ​​the enclosure bracket with a mixed potting compound until the mixed potting compound covers the first surface, and heating and baking it to cure it to form a light-transmitting component; removing the material and performing an electrical test.

[0014] In one embodiment, filling the interior of the enclosure support with a mixed potting compound until the mixed potting compound covers the first surface includes: a first filling in which the surface of the mixed potting compound filled inside the enclosure support is slightly concave and then heated and cured; and a second filling after curing in which the filled mixed potting compound protrudes from the enclosure support and covers the first surface.

[0015] In one embodiment, the first filling of the mixed potting compound comprises the following materials by weight percentage: 5% silicone rubber, 50% silicone resin, 5%-10% stabilizer, 15%-20% silicone resin spherical powder, and 5%-10% polymer microsphere powder; the second filling of the mixed potting compound comprises the following materials by weight percentage: 5% silicone rubber, 50% silicone resin, 2%-5% stabilizer, 3%-6% silicone resin spherical powder, and 1%-3% polymer microsphere powder.

[0016] The beneficial effects of this application are as follows: the portion of the light-transmitting element protruding from the enclosure bracket covers the first surface. When the light-emitting chip is lit, some light will be directed towards the light-transmitting element above the first surface, thus light will also be emitted from the portion directly opposite the first surface. When multiple light-emitting units are lit at intervals, the distance between the light-emitting areas of adjacent light-emitting units decreases (when the distance between two adjacent light-emitting units is constant, the distance between the boundaries of the light-emitting areas of adjacent light-emitting units decreases because the portion directly opposite the first surface is also lit), improving the continuity of luminous efficacy when multiple light-emitting units are lit simultaneously. Furthermore, the overall lighting continuity can be improved without reducing the physical distance between two adjacent light-emitting units. The overall heat accumulation of the LED matrix light panel is not increased, which is beneficial for extending service life and reducing maintenance costs. It also eliminates the need for complex heat dissipation structures that could affect the layout of other components inside the headlight, facilitating the integrated functional design of the headlight. Since this application does not require increasing the luminous power of the light-emitting units, it will not cause glare due to high light intensity. Attached Figure Description

[0017] To more clearly illustrate the embodiments of this application, the relevant drawings will be briefly described below. It is understood that the drawings described below are only for illustrating some embodiments of this application, and those skilled in the art can obtain many other technical features and connections not mentioned herein based on these drawings.

[0018] Figure 1 This is a schematic diagram of a light-emitting unit provided in an embodiment of this application.

[0019] Figure 2 This is a cross-sectional view of a light-emitting unit provided in an embodiment of this application.

[0020] Figure 3 yes Figure 2 Enlarged view of a specific area.

[0021] Figure 4 This is a schematic diagram of the filling of a first filling part provided in an embodiment of this application.

[0022] Figure 5 yes Figure 4 Enlarged view of point A in the middle.

[0023] In the picture:

[0024] 10. Light-emitting unit; 11. Base plate; 12. Light-emitting chip; 13. Light-transmitting component; 131. First filling part; 132. Second filling part; 14. Enclosure bracket; 141. First surface; 142. Light-emitting opening; 143. Inner wall; 1431. First wall surface; 1432. Second wall surface; 15. Bonding line. Detailed Implementation

[0025] To make the objectives, technical solutions, and advantages of the embodiments of this application clearer, the technical solutions of the embodiments of this application will be clearly and completely described below with reference to the accompanying drawings. Obviously, the described embodiments are only a part of the embodiments of this application, and not all of them. All other embodiments obtained by those skilled in the art based on the embodiments of this application without creative effort are within the scope of protection of this application.

[0026] In the description of this application, it should be noted that, unless otherwise expressly specified and limited, the terms "installation," "connection," and "linking" should be interpreted broadly. For example, they can refer to a fixed connection, a detachable connection, or an integral connection; they can refer to a mechanical connection, an electrical connection, or a connection that allows communication between them; they can refer to a direct connection or an indirect connection through an intermediate medium; they can refer to the internal communication between two components or the interaction between two components. Those skilled in the art can understand the specific meaning of the above terms in this application according to the specific circumstances.

[0027] The following will describe in detail the light-emitting unit, vehicle lamp, and processing method of the light-emitting unit in this application with reference to the accompanying drawings and specific embodiments.

[0028] See Figure 1 as well as Figure 2 The light-emitting unit 10 includes a base plate 11, a light-emitting chip 12, a light-transmitting element 13, and a enclosure bracket 14. The light-emitting chip 12 is disposed on the surface of the base plate 11. The light-transmitting element 13 covers the surface of the light-emitting chip 12. The enclosure bracket 14 is disposed on the surface of the base plate 11 where the light-emitting chip 12 is disposed, and surrounds the light-transmitting element 13. The surface of the enclosure bracket 14 away from the base plate 11 is referred to as the first surface 141, and the light-transmitting element 13 covers and blocks the first surface 141.

[0029] The enclosure bracket 14 surrounds the light-transmitting element 13, and the first surface 141 covers the light-transmitting element 13. That is, the space enclosed by the enclosure bracket 14 is filled with the light-transmitting element 13, and the light-transmitting element 13 protrudes (the size of the light-transmitting element 13 is larger in the main light-emitting direction of the light-emitting unit 10, such as...). Figure 2 (As shown in the center X) The portion of the light-transmitting element 13 protruding from the enclosure bracket 14 covers the first surface 141. When the light-emitting chip 12 is lit, some light will be directed towards the portion of the light-transmitting element 13 above the first surface 141 (view from the second corner of the figure, the same below). Light will also be emitted from the portion directly opposite the first surface 141, so that the entire light-emitting unit 10 can be lit, creating a borderless effect (i.e., when viewing the light-emitting unit 10 from the light-emitting side, light will be emitted from the entire light-emitting surface of the light-emitting unit 10). This increases the lit area of ​​the light-emitting unit 10 and improves the lighting effect.

[0030] When multiple light-emitting units 10 are lit at intervals, the spacing between the light-emitting areas of adjacent light-emitting units 10 becomes smaller (when the spacing between two adjacent light-emitting units 10 is constant, since the part directly opposite the first surface 141 is also lit, the spacing between the boundaries of the light-emitting areas of adjacent light-emitting units 10 becomes smaller), which improves the continuity of the luminous efficacy when multiple light-emitting units 10 are lit at the same time. Moreover, the physical spacing between two adjacent light-emitting units 10 does not need to be reduced to improve the overall lighting continuity. The overall heat accumulation of the LED matrix light panel is not increased, which is conducive to improving the service life and reducing maintenance costs. It also does not require the addition of a complex heat dissipation structure that affects the layout of other components inside the headlight, which is conducive to the integrated functional design of the headlight.

[0031] Since this application does not require increasing the luminous power of the light-emitting unit 10, it will not be dazzling due to high light intensity.

[0032] It is worth mentioning that the light-transmitting element 13 covers the first surface 141, preventing the first surface 141 from directly contacting the outside world, that is, preventing the inside of the enclosure bracket 14 from directly contacting the outside world, improving the overall airtightness of the light-emitting unit 10, and helping to extend the service life of the light-emitting unit 10.

[0033] It should be noted that the enclosure bracket 14 surrounds the light-transmitting element 13. In the actual product, the light-transmitting element 13 is filled within the space enclosed by the enclosure bracket 14.

[0034] In some embodiments, the light-transmitting member 13 includes a first filling portion 131 and a second filling portion 132. The first filling portion 131 covers the surface of the light-emitting chip 12, and the second filling portion 132 covers the side of the first filling portion 131 away from the light-emitting chip 12. The surface of the first filling portion 131 away from the light-emitting chip 12 is provided as a curved surface that is recessed toward the light-emitting chip 12, and the refractive index of the first filling portion 131 is greater than the refractive index of the second filling portion 132.

[0035] The surface of the first filling portion 131 that is away from the light-emitting chip 12 is the top surface of the first filling portion 131. Figure 2 (View angle, the same below), that is, the light-emitting surface of the first filling part 131. After the light is emitted from the light-emitting chip 12, it first passes through the adjustment of the first filling part 131, and then passes through the light-emitting surface of the first filling part 131 to be directed to the second filling part 132. Since the light-emitting surface of the first filling part 131 is a downwardly concave curved surface, when the light passes through this curved surface, there will be a certain degree of convergence effect. The light will converge towards the middle area, avoiding excessive light diffusion, so that the overall light is concentrated and emitted upward, improving the brightness and illumination distance of the light-emitting unit 10. (The refractive index of the first filling part 131 is greater than that of the second filling part 132. The light diffusion effect in the first filling part 131 is better. That is, the diffusion angle of the light becomes larger after the light is adjusted by the first filling part 131. When the light-emitting surface of the first filling part 131 does not converge the light, the light diffuses too much, which is not conducive to improving the brightness and illumination distance of the light-emitting unit 10.)

[0036] Furthermore, the refractive index of the first filling part 131 is greater than that of the second filling part 132, which ensures that the light is fully diffused and improves the uniformity of illumination. Moreover, since the first filling part 131 is confined inside the enclosure bracket 14, the fully diffused light is less likely to cross the enclosure bracket 14 and shine into the outer area (non-illuminated area) of the enclosure bracket 14. Therefore, more light will shine into the second filling part 132, thus ensuring that the second filling part 132 covering the first surface 141 receives more light and improves the overall uniformity of illumination. The refractive index of the second filling part 132 is smaller. When the light enters the second filling part 132, it will be homogenized again, improving the overall uniformity of illumination. At the same time, since the second filling part 132 is located at the top of the enclosure bracket 14, the refractive index of the second filling part 132 is lower, and the light will not be excessively diffused to the surroundings, thereby reducing the overall illumination brightness along the main light emission direction (X direction).

[0037] It should be noted that the first filling part 131 is disposed inside the enclosure bracket 14, including the case where the first filling part 131 is completely disposed inside the enclosure bracket 14 and the case where the first filling part 131 is mostly disposed inside the enclosure bracket 14; similarly, the second filling part 132 is disposed on the top of the enclosure bracket 14, including the case where the second filling part 132 is completely disposed on the top of the enclosure bracket 14 and the case where the second filling part 132 is mostly disposed on the top of the enclosure bracket 14; the relevant design is carried out according to the design requirements of the light-emitting unit 10.

[0038] It is worth mentioning that the surface of the first filling part 131 away from the light-emitting chip 12 is recessed towards the light-emitting unit 10. Compared with the top of the first filling part 131 (i.e. the surface away from the light-emitting chip 12) being flat, in this embodiment, the contact area between the first filling part 131 and the second filling part 132 is larger, and the top of the first filling part 131 is recessed, which can accommodate and limit the second filling part 132 to a certain extent. That is, it can strengthen the connection between the first filling part 131 and the second filling part 132, improve the structural strength, and make the connection reliable.

[0039] Furthermore, the surface of the first filling portion 131 that is recessed from the light-emitting chip 12 and faces the light-emitting unit 10 is a curved surface. This curved surface can be formed by cutting or other methods after the filler has been filled and cured, or it can be achieved by means of a mold, etc., and no specific limitation is made here. It is worth mentioning that the first filling portion 131 has a structure that is recessed towards the light-emitting unit 10 (high around the edges and low in the middle). During the liquid droplet manufacturing process, it can accommodate and position the liquid second filling portion 132, preventing the second filling portion 132 from slipping out of the enclosure bracket 14.

[0040] See Figure 2 as well as Figure 4 The first filling part 131 is housed inside the enclosure bracket 14; the enclosure bracket 14 has a light-emitting opening 142 on the side away from the light-emitting chip 12, and the edge of the light-emitting opening 142 coincides with the surface edge of the first filling part 131 away from the light-emitting chip 12.

[0041] The edge of the light-emitting opening 142 coincides with the edge of the light-emitting surface of the first filling part 131 (i.e., the surface of the first filling part 131 away from the light-emitting chip 12). When the light-emitting unit 10 is static (not lit), the junction of the first filling part 131 and the second filling part 132 can be avoided, which helps to improve the static visual effect of the light-emitting unit 10.

[0042] Compared to the first filling part 131 where the edge of the light-emitting surface is located below the edge of the light-emitting opening 142, in this application, the two edges are set to overlap, which improves the static visual effect and ensures that the second filling part 132 covering the first surface 141 can receive more light, which is beneficial to improving the overall lighting uniformity.

[0043] In some embodiments, the first filling portion 131 may also protrude from the enclosure bracket 14. For example, a portion of the first filling portion 131 near the periphery of the light-emitting opening 142 may protrude from the enclosure bracket 14. This protruding portion of the first filling portion 131 can better diffuse the light to the second filling portion 132 above the first surface 141, which is beneficial to improving the uniformity of overall lighting.

[0044] See Figure 2-3The enclosure support 14 has an inner wall 143, and a first filling part 131 is filled between the inner walls 143. The inner wall 143 has a first wall surface 1431 and a second wall surface 1432. The second wall surface 1432 is disposed between the first wall surface 1431 and the base plate 11. The first wall surface 1431 is parallel to the main light emission direction of the light-emitting unit 10, and the second wall surface 1432 is set at an angle to the main light emission direction of the light-emitting unit 10.

[0045] exist Figure 2 From the perspective of the first wall surface 1431, it is parallel to the main light emission direction of the light-emitting unit 10, that is, the first wall surface 1431 is in a vertical state. Since the light emission surface of the first filling part 131 is a downwardly concave curved surface, the vertical state of the first wall surface 1431 can avoid the end position of the first filling part 131 near the first surface 141 (that is, the top edge of the first filling part 131) being too sharp, which is conducive to reducing the difficulty of production and improving the yield and processing efficiency.

[0046] To make it easier to understand, the following explanation will be based on the example of an inner wall 143 having only one inclined surface. When the inner wall 143 has only one inclined surface, the top edges of the first filling part 131 are pointed. The closer to the edge of the light-emitting opening 142, the smaller the size of the first filling part 131 becomes, which increases the processing difficulty.

[0047] It should be noted that the second wall surface 1432 is set at an angle to the main light emission direction of the light-emitting unit 10, that is, the second wall surface 1432 is set at an angle. Figure 2 From this perspective, the second wall 1432 is set upward and outward, which is conducive to the propagation of light, and will not be elaborated here.

[0048] In some embodiments, in the main light-emitting direction of the light-emitting unit 10, the size of the first wall 1431 is h1 and the size of the second wall 1432 is h2, satisfying: 6≤h2 / h1≤7, for example 6, 7, etc.

[0049] When the value of h2 / h1 is less than 6, the value of h2 is too small, that is, the size of the second wall 1432 in the vertical direction is too small, and the opening of the light-emitting unit 10 is too small, which is not conducive to improving the lighting range of the light-emitting unit 10. Alternatively, the value of h1 is too large, that is, the size of the first wall 1431 in the vertical direction is too large, and the first wall 1431 occupies too much vertical space, making it difficult for light to shine from the first filling part 131 to the second filling part 132 above the first surface 141, which is not conducive to the uniformity of overall lighting.

[0050] When the value of h2 / h1 is greater than 7, the value of h2 is too large, that is, the vertical dimension of the second wall 1432 is too large, which is not conducive to the flat design of the light-emitting unit 10, or the value of h1 is too small, which increases the processing difficulty.

[0051] In some embodiments, the distance between the first surface 141 and the base plate 11 in the light emission direction of the light-emitting unit 10 gradually increases in the direction from the center of the self-emitting unit 10 toward the edge.

[0052] That is, in Figure 2 and Figure 3 From the perspective of the light source, the first surface 141 is set at an angle, and the part near the center of the light-emitting unit 10 is the lower part (the distance between the light-emitting unit 10 and the base plate 11 is the smallest in the main light-emitting direction). This setting is more conducive to the light shining from inside the enclosure bracket 14 onto the light-transmitting part 13 above the first surface 141, thereby increasing the brightness of the light-transmitting part 13 when lit, which is beneficial to the overall lighting brightness.

[0053] In some embodiments, the first surface 141 is provided with a black coating.

[0054] The black coating can absorb light sources, resulting in no dark areas at the edges of the light-emitting unit 10, full particles, and improved lighting effect of the light-emitting unit 10.

[0055] On the other hand, this application also relates to a vehicle lamp, including any of the aforementioned light-emitting units 10.

[0056] On the other hand, this application also relates to a processing method for a light-emitting unit 10, comprising the following steps: bonding a light-emitting chip 12 to a die-bonding area on a base plate 11 and heating and baking it to fix the light-emitting chip 12; connecting bonding wires 15 to electrically connect the light-emitting chip 12 to the electrode area on the base plate 11; preheating and dehumidifying the internal area of ​​the enclosure bracket 14 and the first surface 141; filling the internal area of ​​the enclosure bracket 14 with a mixed potting compound until the mixed potting compound covers the first surface 141, and heating and baking it to cure it to form a light-transmitting element 13; unloading the material and performing electrical testing.

[0057] The light-transmitting element 13 formed can cover the first surface 141. After the light-emitting unit 10 is lit, some light will enter the light-transmitting element 13 above the first surface 141, realizing the lighting of the area directly opposite the first surface 141, which is beneficial to improving the uniformity of the overall lighting of the light-emitting unit 10.

[0058] In some embodiments, the step of filling the interior of the enclosure bracket 14 with mixed potting compound until the mixed potting compound covers the first surface 141 includes: a first filling in which the surface of the mixed potting compound filled inside the enclosure bracket 14 is a micro-concave surface, and is then heated and baked to cure; and a second filling after curing in which the filled mixed potting compound protrudes from the enclosure bracket 14 and covers the first surface 141.

[0059] By filling with mixed potting compound twice, the first filling forms a first filling part 131, and the light-emitting surface of the first filling part 131 is a slightly concave surface (the surface that is recessed towards the base plate 11), as detailed in the previous embodiment, which will not be repeated here. The second filling forms a second filling part 132, which covers the first surface 141 and improves the uniformity of overall lighting. The two fillings help to improve the processing quality and ensure the lighting effect of the light-emitting unit 10.

[0060] In some embodiments, the first filling of the mixed potting compound comprises the following materials by weight percentage: 5% silicone rubber, 50% silicone resin, 5%-10% stabilizer, 15%-20% silicone resin spherical powder, and 5%-10% polymeric microsphere powder; the second filling of the mixed potting compound comprises the following materials by weight percentage: 5% silicone rubber, 50% silicone resin, 2%-5% stabilizer, 3%-6% silicone resin spherical powder, and 1%-3% polymeric microsphere powder.

[0061] For example: the first filling of the mixed potting compound includes the following materials by weight percentage: 5% silicone rubber, 50% silicone resin, 7% stabilizer, 18% silicone resin spherical powder, and 7% polymer microsphere powder; the second filling of the mixed potting compound includes the following materials by weight percentage: 5% silicone rubber, 50% silicone resin, 3% stabilizer, 4% silicone resin spherical powder, and 2% polymer microsphere powder.

[0062] In the filled potting compound, the powder is in a spherical shape, which increases reflectivity, such as... Figure 5 As shown, this helps to improve the uniformity of light.

[0063] In the first filling of the mixed potting compound, there are more spherical powders (compared to the second filling), and the light is diffused more evenly. Since the first filling is inside the enclosure bracket 14, the diffused light is confined inside the enclosure bracket 14, which improves the utilization rate of light and more light is directed to the target area, which is beneficial to improving the brightness and uniformity of the illumination.

[0064] It should be noted that, in the embodiments, the stabilizing binder could be C2H6Cl2O2Si2 (hydrophobic nano-silica), the chemical structure of the organosilicon resin spherical micropowder is -Si-O-Si-, and the chemical structure of the polymer microsphere powder is [(CH3)2SiO]. a[CH3SiO3 / 2]ᵦ[C6H5SiO3 / 2]c[ViMe2SiO1 / 2]d.

[0065] It is worth noting that, in the above-mentioned mixed potting compound, in addition to the components mentioned in the proportion, the balance can be selected from conventional fillers in the art, such as silica and additives, and is not limited here.

[0066] Using the technical solution provided in this application embodiment, the portion of the light-transmitting element 13 protruding from the enclosure bracket 14 covers the first surface 141. When the light-emitting chip 12 is lit, some light will be directed towards the portion of the light-transmitting element 13 above the first surface 141, and light will also be emitted from the portion directly opposite the first surface 141, so that the entire light-emitting unit 10 can be lit, increasing the lighting area of ​​the light-emitting unit 10 and improving the lighting effect. When multiple light-emitting units 10 are lit at intervals, the distance between the light-emitting areas of adjacent light-emitting units 10 becomes smaller (when the distance between two adjacent light-emitting units 10 is constant, the distance between the light-emitting areas of adjacent light-emitting units 10 becomes smaller because the portion directly opposite the first surface 141 is also lit), improving the continuity of the luminous efficacy when multiple light-emitting units 10 are lit simultaneously. Moreover, the physical distance between two adjacent light-emitting units 10 does not need to be reduced to improve the overall lighting continuity, and the overall heat accumulation of the LED matrix light panel is not increased, which is beneficial to improving the service life and reducing maintenance costs; it also does not require adding a complex heat dissipation structure that affects the layout of other components inside the vehicle light, which is beneficial to the integrated functional design of the vehicle light.

[0067] The light-transmitting element 13 covers the first surface 141, preventing the first surface 141 from directly contacting the outside world, that is, preventing the inside of the enclosure bracket 14 from directly contacting the outside world, improving the overall airtightness of the light-emitting unit 10, and helping to extend the service life of the light-emitting unit 10.

[0068] In the various embodiments of this application, unless otherwise specified or logically conflicting, the terminology or descriptions between different embodiments are consistent and can be referenced mutually. Technical features in different embodiments can be combined to form new embodiments based on their inherent logical relationships. In this application, "at least one" means one or more, and "more than one" means two or more.

[0069] It is understood that the various numerical designations used in the embodiments of this application are merely for descriptive convenience and are not intended to limit the scope of the embodiments of this application. The order of the process numbers described above does not imply the order of execution; the execution order of each process should be determined by its function and internal logic.

[0070] The technical subject matter provided by the embodiments of this application has been described in detail above. Specific examples have been used to illustrate the principles and implementation methods of this application. The description of the above embodiments is only for the purpose of helping to understand this application and its core ideas. At the same time, for those skilled in the art, there will be changes in the specific implementation methods and application scope based on the ideas of this application. Therefore, the content of this specification should not be construed as a limitation of this application.

Claims

1. A light-emitting unit, characterized in that, include: Base plate; A light-emitting chip is disposed on the surface of the base plate; A light-transmitting element that covers the surface of the light-emitting chip; as well as A barrier bracket is provided on the surface of the base plate where the light-emitting chip is located, and surrounds the periphery of the light-transmitting component; The surface of the enclosure support away from the base plate is referred to as the first surface, and the light-transmitting element covers and blocks the first surface.

2. The light-emitting unit as described in claim 1, characterized in that, The light-transmitting element includes a first filling portion and a second filling portion, wherein the first filling portion covers the surface of the light-emitting chip, and the second filling portion covers the side of the first filling portion away from the light-emitting chip; The surface of the first filling portion away from the light-emitting chip is provided as a curved surface that is recessed toward the light-emitting chip, and the refractive index of the first filling portion is greater than the refractive index of the second filling portion.

3. The light-emitting unit as described in claim 2, characterized in that, The first filling portion is housed inside the enclosure bracket; The enclosure bracket has a light-emitting opening on the side away from the light-emitting chip, and the edge of the light-emitting opening coincides with the surface edge of the first filling part away from the light-emitting chip.

4. The light-emitting unit as described in claim 3, characterized in that, The enclosure support has an inner wall, and the first filling portion fills the space between the inner walls; The inner wall has a first wall surface and a second wall surface. The second wall surface is disposed between the first wall surface and the base plate. The first wall surface is parallel to the main light emission direction of the light-emitting unit, and the second wall surface is set at an angle to the main light emission direction of the light-emitting unit.

5. The light-emitting unit as described in claim 4, characterized in that, In the main light-emitting direction of the light-emitting unit, the size of the first wall is h1 and the size of the second wall is h2, satisfying: 6≤h2 / h1≤7.

6. The light-emitting unit as described in claim 1, characterized in that, The distance between the first surface and the base plate in the light-emitting direction of the light-emitting unit gradually increases from the center of the light-emitting unit toward the edge.

7. The light-emitting unit as described in claim 1, characterized in that, The first surface has a black coating.

8. A vehicle light, characterized in that, It includes the light-emitting unit as described in any one of claims 1 to 7.

9. A method for processing a light-emitting unit, characterized in that, Includes the following steps: The light-emitting chip is bonded to the die-bonding area on the substrate and then heated and baked to fix the light-emitting chip. Connect the bonding wires to electrically connect the light-emitting chip to the electrode area on the substrate; Preheat and dehumidify the internal area of ​​the enclosure frame and its first surface; Fill the interior area of ​​the enclosure support with a mixed potting compound until it covers the first surface, and then heat and bake it to cure it into a light-transmitting component. Remove the material and perform electrical tests.

10. The processing method of the light-emitting unit as described in claim 9, characterized in that, The process of filling the interior of the enclosure support with a mixed potting compound until the mixed potting compound covers the first surface includes: a first filling, wherein the surface of the mixed potting compound filled inside the enclosure support is slightly concave, and then heated and baked to cure; and After curing, a second filling is performed, causing the mixed potting compound to protrude from the enclosure support and cover the first surface.

11. The method for processing the light-emitting unit as described in claim 10, characterized in that, The first filling of the mixed potting compound includes the following materials by weight percentage: 5% silicone rubber, 50% silicone resin, 5%-10% stabilizer binder, 15%-20% organosilicon resin spherical powder, and 5%-10% polymer microsphere powder. The second filling of the mixed potting compound includes the following materials by weight percentage: 5% silicone rubber, 50% silicone resin, 2%-5% stabilizer, 3%-6% organosilicon resin spherical powder, and 1%-3% polymer microsphere powder.

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