Automotive lamps and automobiles containing such lamps

Abstract

To produce a lamp for automobiles that has excellent flexibility and a high degree of freedom in design.SOLUTION: In the present invention, a lamp for automobiles is disclosed that includes: a circuit board; a plurality of light sources provided on the top of the circuit board; an optical resin layer provided on the top of the circuit board so as to cover the plurality of light sources; and a phosphor layer provided in close contact with the top of the optical resin layer. The phosphor layer includes a resin matrix, and a phosphor dispersed in the resin matrix.SELECTED DRAWING: Figure 1

Description

[Technical Field]

[0001] The present invention relates to an automotive lamp and to a vehicle including the lamp. [Background technology]

[0002] Various lamps are installed at the front and rear of automobiles. For example, a rear combination lamp installed at the rear of an automobile may include a backup lamp, a tail lamp, a stop lamp, and a turn signal lamp in a single assembly.

[0003] Among these, taillights and stoplights function as taillights, which notify vehicles behind of your position, and stoplights, which notify vehicles behind that you are slowing down. Both taillights and stoplights generally emit red light. Since taillights are always on at night, the brakelights, which emit the same color as the taillights, must be designed with a relatively high luminous intensity to ensure that they function smoothly as brake lights, which light up when you apply the brakes.

[0004] Meanwhile, conventional automotive lamps generally use either a direct lighting system that distributes light directly to the outside through an inner lens without using a reflective surface, or an indirect lighting system that distributes light using a reflective surface. For example, an automotive lamp using an indirect lighting system includes a reflective surface that is disposed forward with respect to the light irradiation direction of a light source that irradiates light, is formed to have a curvature, and reflects light incident from the light source and distributes it to the outside.

[0005] However, conventional optical systems using direct or indirect lighting require an air gap of at least 15mm and an inner lens that not only serves as a reflective surface but also diffuses light, which limits the structural flexibility of automotive lamps. In addition, applying an inner lens makes it difficult to realize stop light distribution using brake lights.

[0006] Recently, active research has been conducted on lamp optics to realize various effects, such as 3D effects, using organic light-emitting diodes (OLEDs) with surface light source characteristics. However, most OLED lamp optics do not comply with North American STOP regulations.

[0007] Therefore, there is a demand for the development of an automotive lamp optical system that ensures good appearance and freedom of design, and also satisfies stop light distribution regulations.

[0008] The background art relating to the present invention is disclosed in Patent Document 1. [Prior art documents] [Patent documents]

[0009] [Patent Document 1] Japanese Patent Application Laid-Open No. 5953662 Summary of the Invention [Problem to be solved by the invention]

[0010] Therefore, the problem to be solved by the present invention is to manufacture an automotive lamp that is flexible and has excellent design freedom.

[0011] Another problem to be solved by the present invention is to manufacture an automotive lamp that has excellent light uniformity when turned on.

[0012] Another problem to be solved by the present invention is to manufacture an automotive lamp that satisfies the regulations for stop light distribution and has excellent heat resistance, yellowing resistance, durability and reliability.

[0013] Another problem to be solved by the present invention is to manufacture an automotive lamp that has a simplified structure, increases space utilization, and is highly productive and economical. [Means for solving the problem]

[0014] According to one aspect of the present invention for achieving the above object, there is provided an automotive lamp including: a circuit board; a plurality of light sources provided on an upper surface of the circuit board; an optical resin layer provided on the upper surface of the circuit board so as to cover the plurality of light sources; and a phosphor layer provided in close contact with the upper surface of the optical resin layer, wherein the phosphor layer includes a resin matrix and a phosphor dispersed within the resin matrix.

[0015] When the distance between the plurality of light sources is P, the thickness of the optical resin layer is T1, and the thickness of the phosphor layer is T2, the relationship of the following [Formula 1] can be satisfied. [Formula 1] 0.1≦(T1+T2) / P≦2.0

[0016] The light source may have an emission peak wavelength of 420 nm or more and 470 nm or less.

[0017] The phosphor may include a red phosphor having a size of 1 μm to 100 μm, and the red phosphor may include one or more of a garnet-based phosphor, a silicate-based phosphor, a nitride-based phosphor, and an oxynitride-based phosphor.

[0018] The phosphor layer may contain 50 to 99.9% by weight of the resin matrix and 0.1 to 50% by weight of a red phosphor.

[0019] The optical resin layer and the resin matrix each contain an addition reaction type silicone resin composition, and the addition reaction type silicone resin composition can contain a methyl group-containing silicone composition and a curing catalyst.

[0020] The addition reaction type silicone resin composition may contain the curing catalyst in an amount of 0.0001 to 5 parts by weight per 100 parts by weight of the methyl group-containing silicone composition.

[0021] The methyl group-containing silicon composition can contain 65 to 85% by weight of a methyl group-containing polysiloxane, 13 to 30% by weight of a methyl group-containing chlorosilane compound, and 1 to 8% by weight of a methyl group-containing hydrogen polysiloxane.

[0022] The phosphor may have a refractive index of 1.5 or more, and the optical resin layer and the resin matrix may each have a refractive index of 1.3 or more and 1.8 or less.

[0023] The phosphor may have a refractive index of 1.5 or more and 2.5 or less, and the optical resin layer and the resin matrix may each have a refractive index of 1.4 or more and 1.5 or less.

[0024] The display device may further include an optical filter member disposed on the phosphor layer to block a portion of wavelengths of visible light emitted from the phosphor layer.

[0025] The phosphor layer may include a pattern region provided on a surface of the phosphor layer, in which recessed grooves are formed.

[0026] The patterned region may be provided on an upper surface of the phosphor layer.

[0027] The optical filter member may be an inner lens or an outer lens.

[0028] According to another aspect of the present invention to achieve the above object, there is provided an automobile including an automotive lamp, the automotive lamp including a circuit board, a plurality of light sources provided on an upper surface of the circuit board, an optical resin layer provided on the upper surface of the circuit board and molding the plurality of light sources, and a phosphor layer provided in close contact with the upper surface of the optical resin layer, the phosphor layer including a resin matrix and a phosphor dispersed within the resin matrix.

[0029] A reflective area that reflects light emitted from the light sources may be provided on at least a portion of an upper surface of the circuit board. [Effects of the Invention]

[0030] According to the present invention, it is possible to manufacture an automotive lamp that is highly flexible and has a high degree of freedom in design.

[0031] Furthermore, according to the present invention, an automotive lamp having excellent light uniformity when lit can be manufactured.

[0032] Furthermore, according to the present invention, it is possible to manufacture an automotive lamp that satisfies the regulations for stop light distribution and has excellent heat resistance, yellowing resistance, durability and reliability.

[0033] Furthermore, the present invention simplifies the structure, increases space utilization, and allows for the manufacture of automotive lamps with excellent productivity and economy. [Brief explanation of the drawings]

[0034] [Figure 1] 1 is a cross-sectional view illustrating the structure of an automotive lamp according to an example of the present invention. [Figure 2] 1 is a graph showing wavelength conversion of a light source by a phosphor of the present invention. [Figure 3] 10 is a graph showing the wavelength conversion effect when the optical filter member according to the present invention is applied. [Figure 4] 10 is a photograph showing a light distribution pattern formed by an automotive lamp according to another embodiment of the present invention. [Figure 5] 1 is a photograph showing the state in which a laminated structure of a circuit board, a plurality of light sources, an optical resin layer, and a phosphor layer that constitutes an automotive lamp according to Example 1 of the present invention emits light. [Figure 6] 1 is a photograph showing a state in which an automotive lamp according to Example 1 of the present invention is applied to an automobile. DETAILED DESCRIPTION OF THE INVENTION

[0035] Hereinafter, an automotive lamp and an automobile according to the present invention will be described with reference to the drawings.

[0036] [Automotive lamps] FIG. 1 is a cross-sectional view illustrating the structure of an automobile lamp according to an embodiment of the present invention.

[0037] As shown in FIG. 1, an automotive lamp 10 (hereinafter referred to as "lamp") according to the present invention may include a circuit board 100 and a plurality of light sources 200 provided on the upper surface of the circuit board 100. FIG. 1 illustrates, as an example, four light sources provided on the upper surface of the circuit board 100. Meanwhile, the circuit board 100 may include a printed circuit board (PCB). For example, the circuit board 100 may include a flexible printed circuit board, and the thickness of the circuit board 100 may be 0.05 mm or more and 5 mm or less. More preferably, the thickness of the circuit board 100 may be 0.1 mm or more and 1 mm or less.

[0038] The lamp 10 may also include an optical resin layer 300 provided on the upper surface of the circuit board 100 to cover the plurality of light sources 200, and a phosphor layer 400 provided in close contact with the upper surface of the optical resin layer 300. Therefore, as shown in Fig. 1, the plurality of light sources 200 may be molded by the optical resin layer 300. The optical resin layer 300 may be configured to protect the plurality of light sources 200 from external impacts and ensure uniformity of light emitted from the plurality of light sources 200.

[0039] In addition, the plurality of light sources 200 may be provided on the upper surface of the circuit board 100 using a flip chip method. The flip chip method means that when attaching an element such as a light source to a circuit board, the element is directly fused using an electrode pattern formed on the circuit board without using a separate connection structure. When the plurality of light sources 200 are provided on the circuit board 100 using the flip chip method, wires attached to the light sources can be eliminated, thereby improving reliability against external impact or thermal shock and improving the luminous efficiency of the light source.

[0040] Meanwhile, according to the present invention, when the distance between the plurality of light sources 200 provided on the circuit board 100 is P, P may have a value of 3 mm or more and 10 mm or less. More preferably, P may be 4 mm or more and 6 mm or less.

[0041] Furthermore, the plurality of light sources 200 may have a predetermined emission peak. For example, the emission peak of the plurality of light sources 200 may have a wavelength of 420 nm or more and 470 nm or less. For example, the light source 200 may include a blue light-emitting diode having an emission peak wavelength of 420 nm or more and 470 nm or less.

[0042] On the other hand, when the thickness of the optical resin layer 300 is T1 and the thickness of the phosphor layer 400 is T2, according to the present invention, the relationship of the following [Formula 1] can be satisfied.

[0043] [Formula 1] 0.1≦(T1+T2) / P≦2.0

[0044] When the condition of [Equation 1] is satisfied, the light uniformity of the lamp 10 according to the present invention can be improved. For example, the distance P between the light sources may be equal to the sum T1 + T2 of the thickness T1 of the optical resin layer 300 and the thickness T2 of the phosphor layer 400.

[0045] Furthermore, according to the present invention, the thickness T1 of the optical resin layer 300 may be 3 mm or more and 10 mm or less so that the lamp 10 has excellent durability and bending properties. More preferably, T1 may be 4 mm or more and 6 mm or less.

[0046] Meanwhile, the phosphor layer 400 of the lamp 10 according to the present invention may include a resin matrix 410 and phosphors 420 dispersed within the resin matrix. As shown in Fig. 1, the phosphors 420 dispersed within the resin matrix 410 may be configured to absorb light emitted from the plurality of light sources 200 and simultaneously diffuse the light when emitting it, thereby realizing the characteristics of a surface light source. This is advantageous in terms of improving light uniformity compared to the case where a diffusion filler according to the prior art is used.

[0047] Meanwhile, in order to improve light diffusion and uniformity, the refractive index of the phosphor 420 may be 1.5 or more, and more preferably, the refractive index of the phosphor 420 may be 1.5 or more and 2.5 or less.

[0048] The phosphor 420 may include a red phosphor having a size of 1 μm to 100 μm. Here, the size of the phosphor 420 may refer to the diameter or maximum length of the particle. The red phosphor may include one or more of a garnet-based phosphor, a silicate-based phosphor, a nitride-based phosphor, and an oxynitride-based phosphor. For example, the garnet-based red phosphor may include one or more of YAG (Yttrium Aluminum Garnet) and TAG (Terbium Aluminum Garnet). The size of the red phosphor may be 5 μm to 50 μm.

[0049] FIG. 2 is a graph showing wavelength conversion of a light source by the phosphor of the present invention.

[0050] For example, when the light source 200 (see FIG. 1) of the lamp 10 (see FIG. 1) according to the present invention emits blue light having an emission peak of about 450 nm and the phosphor 420 (see FIG. 1) is a red phosphor, it can be seen that a wavelength conversion has occurred from blue light having an emission peak of about 450 nm to red light having an emission peak of about 625 nm, as shown in FIG. 2.

[0051] Meanwhile, according to the present invention, the optical resin layer 300 and the resin matrix 410 can each contain an addition reaction type silicone resin composition. More specifically, the addition reaction type silicone resin composition can contain a methyl group-containing silicone composition and a curing catalyst. The methyl group-containing silicone composition has excellent moldability, flexibility, and heat resistance, and can prevent yellowing during long-term use, which is also advantageous in terms of economy.

[0052] The methyl group-containing silicone composition can include a methyl group-containing polysiloxane, a methyl group-containing chlorosilane compound, and a methyl group-containing hydrogen polysiloxane.

[0053] The methyl group-containing polysiloxane may include one or more of polymethylvinylsiloxane, dimethylvinyl-terminated dimethylsiloxane copolymer, methylvinylsiloxane-dimethylsiloxane copolymer, dimethylvinylsiloxy-terminated dimethylsiloxane, dimethylvinylsiloxy-terminated dimethylsiloxane, dimethylvinylsiloxy-terminated trimethylsiloxy-terminated dimethylsiloxane-methylvinylsiloxane copolymer, and trimethylsiloxy-terminated dimethylsiloxane-methylphenylsiloxane-methylvinylsiloxane copolymer. For example, it may include a dimethylvinyl-terminated dimethylsiloxane copolymer. Furthermore, the methyl group-containing polysiloxane may be included in an amount of 65 to 85 wt % based on the total weight of the methyl group-containing silicone composition. In this case, the optical resin layer 300 and the resin matrix 410 may have excellent flexibility, heat resistance, and reliability. More preferably, the methyl group-containing polysiloxane may be included in an amount of 70 to 75 wt %.

[0054] The methyl group-containing chlorosilane compound can include one or more of dimethylchlorosilane, trimethylchlorosilane, vinyldimethylchlorosilane, and diethylmethylchlorosilane.

[0055] The methyl group-containing chlorosilane compound may be contained in an amount of 13 to 30 wt % based on the total weight of the methyl group-containing silicone composition. In this case, the crosslink density, heat resistance, and mechanical properties of the optical resin layer 300 and the resin matrix 410 can be excellent. More preferably, the methyl group-containing chlorosilane compound may be contained in an amount of 15 to 25 wt %.

[0056] The methyl-group-containing hydrogen polysiloxane can contain one or more, for example, two or more silicon-bonded hydrogen groups per molecule. For example, the hydrogen atoms bonded to the silicon atoms of the methyl-group-containing hydrogen polysiloxane can be bonded at one or more of the terminal and side chains of the molecular chain. The methyl-group-containing hydrogen polysiloxane can also include one or more of dimethylhydrogensiloxy-terminated polydimethylsiloxane and trimethylsiloxy-terminated dimethylsiloxane-methylhydrogensiloxane copolymers.

[0057] The methyl-containing hydrogen polysiloxane may be contained in an amount of 1 to 8 wt % based on the total weight of the methyl-containing silicone composition, which may provide excellent crosslink density, heat resistance, and mechanical properties for the optical resin layer 300 and the resin matrix 410.

[0058] The methyl group-containing silicone composition may further contain 0.001 to 5 wt % of additives, such as light stabilizers, heat stabilizers, antioxidants, antistatic agents, lubricants, and flame retardants, based on the total weight of the composition.

[0059] The curing catalyst may include one or more of finely powdered platinum, platinum black, chloroplatinic acid, alcohol-modified chloroplatinic acid, chloroplatinic acid-olefin complex, chloroplatinic acid-alkenylsiloxane complex, and chloroplatinic acid-divinyltetramethyldisiloxane complex, and may be included in an amount of 0.0001 to 5 parts by weight based on 100 parts by weight of the methyl group-containing silicone composition.

[0060] The platinum catalyst may be included in an amount of 0.0001 to 5 parts by weight per 100 parts by weight of the methyl group-containing silicone composition. In this case, it is easy to control the curing reaction rate of the addition reaction type silicone resin composition. For example, the platinum catalyst may be included in an amount of 0.01 to 3 parts by weight per 100 parts by weight of the methyl group-containing silicone composition. Alternatively, the platinum catalyst may be included in an amount of 0.03 to 2 parts by weight per 100 parts by weight of the methyl group-containing silicone composition.

[0061] Meanwhile, the resin matrix may have a refractive index of 1.3 to 1.8. For example, the resin matrix may include one or more of polycarbonate, polystyrene, polyolefin, polyester, and polyalkyl(meth)acrylate. More preferably, the refractive index of the resin matrix may be 1.4 to 1.5, or 1.4 to 1.42.

[0062] The optical resin layer may have a refractive index of 1.3 or more and 1.8 or less, and more preferably, the refractive index of the optical resin layer may be 1.4 or more and 1.5 or less.

[0063] Furthermore, the difference in refractive index between the optical resin layer and the resin matrix of the phosphor layer may be 0.2 or less. In this case, the lamp according to the present invention can have excellent light uniformity. For example, the optical resin layer and the resin matrix can contain the same type of addition reaction type silicone resin composition. In this case, the adhesive strength between the optical resin layer and the resin matrix can be excellent.

[0064] The fluorescent layer may contain 50 to 99.9% by weight of a resin matrix and 0.1 to 50% by weight of a red phosphor, which not only ensures uniformity of light emitted from the lamp but also improves the durability and bending properties of the fluorescent layer.

[0065] The thickness T2 of the fluorescent layer may be 0.1 mm or more and 1 mm or less, for example, 0.3 mm or more and 1 mm or less, in which case durability and bending properties can be excellent.

[0066] 1, the lamp 10 according to the present invention may further include an optical filter member 500 disposed on the phosphor layer 400 and blocking a portion of the wavelengths of the visible light emitted from the phosphor layer 400. That is, the optical filter member 500 may be configured to block a portion of the visible light emitted from the phosphor layer 400 and convert the color of the light emitted to the outside.

[0067] FIG. 3 is a graph showing the wavelength conversion effect when the optical filter member according to the present invention is applied.

[0068] The lamp 10 according to the present invention may be a lamp mounted on the rear of an automobile. In this case, the light emitted from the lamp 10 according to the present invention to the outside may be red light. In this case, the optical filter member 500 according to the present invention may be a red outer lens provided on the outermost side of the lamp 10. That is, when the optical filter member 500 is a red outer lens, as shown in FIG. 3, it can block blue wavelength light from the light emitted from the plurality of light sources 200, thereby allowing red light to be emitted to the outside. However, alternatively, the optical filter member 500 may be a red inner lens provided in the interior space of the lamp 10, or may be provided separately from the inner lens or outer lens.

[0069] FIG. 4 is a photograph showing a light distribution pattern formed by an automotive lamp according to an example of the present invention.

[0070] As shown in Fig. 4, a predetermined pattern Z may be formed in the light distribution pattern formed by the lamp 10 according to the present invention. To this end, the phosphor layer 400 (see Fig. 1) may further include a pattern region in which a recessed groove is formed on the surface of the phosphor layer 400. More specifically, the pattern region may be formed on the upper surface of the phosphor layer 400. For example, the pattern region may be formed by forming a groove region having a shape corresponding to the pattern region in a mold used to manufacture the phosphor layer 400. However, the pattern region may be manufactured in various ways.

[0071] [Example 1] (1) Preparation of Addition-Reaction Silicone Resin Composition: To prepare the resin matrix for the optical resin layer and the phosphor layer, an addition-reaction silicone resin composition containing 100 parts by weight of a methyl-group-containing silicone composition and 0.001 parts by weight of a curing catalyst (platinum-based catalyst) was prepared. The methyl-group-containing silicone composition contained 75% by weight of dimethylvinyl-terminated dimethylsiloxane copolymer, 23% by weight of a methyl-group-containing chlorosilane compound (at least one of chlorotrimethylsilane and dichloroethylmethylsilane), 1% by weight of a methyl-group-containing hydrogen polysiloxane (trimethylsiloxy-terminated dimethylsiloxane-methylhydrosilane copolymer), and 1% by weight of additives.

[0072] (2) Fabrication of a laminated structure comprising a circuit board for an automotive lamp, multiple light sources, an optical resin layer, and a phosphor layer: A 0.5 mm thick flexible circuit board (PCB) was prepared, and multiple light sources (blue light-emitting diodes with an emission peak of 450 nm) were arranged on the circuit board at 5 mm intervals using a flip-chip method. The multiple light sources were molded on top of the circuit board using an addition-reaction type silicone resin composition, forming an optical resin layer with a refractive index of 1.4 to 1.5. Next, a phosphor layer was formed on the surface of the optical resin layer to fabricate an automotive lamp.

[0073] In this case, the phosphor layer was prepared to contain 80 to 99.5 wt % of a resin matrix having a refractive index of 1.4 to 1.5, formed by containing an addition reaction type silicone resin composition, and 0.5 to 20 wt % of a red phosphor (nitride-based phosphor having a refractive index of 1.5 to 2.5) dispersed in the resin matrix. The sum of the thicknesses of the optical resin layer and the phosphor layer was 5 mm.

[0074] Figure 5 is a photograph showing the light emitted from a laminated structure of a circuit board, a plurality of light sources, an optical resin layer, and a phosphor layer constituting an automotive lamp according to Example 1 of the present invention. Referring to Figure 5, it can be seen that in Example 1, the structure has excellent flexibility and can realize a surface light source and tail and stop light distribution.

[0075] [Example 2] A structure was manufactured in the same manner as in Example 1, except that a methyl-containing silicon composition containing 71 wt% dimethylvinyl-terminated dimethylsiloxane copolymer, 25 wt% methyl-containing chlorosilane compound (one or more of chlorotrimethylsilane and dichloroethylmethylsilane), 2 wt% methyl-containing hydrogen polysiloxane (trimethylsiloxy-terminated dimethylsiloxane-methylhydrosilane copolymer), and 2 wt% additive was used.

[0076] (2) Manufacturing of Automotive Lamps: Automotive lamps including the structures manufactured according to Examples 1 and 2 were manufactured.

[0077] Conventional surface light sources using three-dimensional lenses require multiple lenses and LED light sources, which increases the thickness of the optical system, resulting in low space efficiency, difficulty in lens injection and assembly, which is economical, and low light efficiency relative to the area, making it difficult to use in brake lights.

[0078] FIG. 6 is a photograph showing the state in which the automotive lamp according to the first embodiment of the present invention is applied to an automobile.

[0079] Referring to FIG. 6, it can be seen that the automotive lamp according to the first embodiment can realize slimmer lamp modules in line with recent design trends, can reduce production costs by simplifying the lamp module assembly process and miniaturizing the lamp, and can easily realize geometric shapes that could not be realized in the past.

[0080] (3) Thermal Shock Test: LG Innotek conducted a bending thermal shock test on the automotive lamp structures according to Examples 1 and 2. Specifically, the structures manufactured according to Example 1 were subjected to 1,000 cycles, consisting of 10 minutes at -40±3°C, followed by 10 minutes at 85±3°C at a heating rate of 12°C / min. After 1,000 cycles, the structures according to Example 1 were turned on and their luminous flux was measured. A test specimen was deemed pass if its luminous flux was reduced to 20% or less compared to the luminous flux before the thermal shock test. The test specimens were visually inspected for discoloration, fading, swelling, cracks, etc. The results showed that the luminous flux of the structures manufactured according to Examples 1 and 2 after the thermal shock test was reduced to 2.2% or less compared to the luminous flux before the thermal shock test, and no discoloration, fading, swelling, cracks, etc. were observed.

[0081] [car] An automobile according to the present invention may include an automobile lamp 10 (hereinafter referred to as "lamp"). In this case, the lamp 10 may be a lamp provided at the rear of the automobile. In this case, the lamp 10 may include a circuit board 100, a plurality of light sources 200 provided on an upper surface of the circuit board 100, an optical resin layer 300 provided on the upper surface of the circuit board 100 and molding the plurality of light sources 200, and a phosphor layer 400 provided in close contact with the upper surface of the optical resin layer 300. In this case, the phosphor layer 400 may include a resin matrix 410 and a phosphor 420 dispersed within the resin matrix 410.

[0082] Meanwhile, according to the present invention, at least a portion of the upper surface of the circuit board 100 may be provided with a reflective area for reflecting light emitted from the plurality of light sources 200. Most of the light emitted from the plurality of light sources 200 is incident upward toward the phosphor layer 400, but some of the light may be incident downward toward the circuit board 100. Of this, the light incident toward the circuit board 100 does not contribute to the light emission of the lamp 10 and may act as a factor that reduces the performance of the lamp 10. Therefore, according to the present invention, a reflective area is formed on at least a portion of the circuit board 100 to reflect the light incident on the circuit board from the plurality of light sources 200 and then incident on the phosphor layer 400 again, thereby minimizing the reduction in performance of the lamp 10. More preferably, the reflective area may have a white color to maximize the reflectance of the reflective area.

[0083] Although the present invention has been described above using limited examples and drawings, it goes without saying that the present invention is not limited thereto, and that various implementations within the technical spirit of the present invention and the scope of the following claims can be made by a person having ordinary skill in the art to which the present invention pertains. [Explanation of symbols]

[0084] 10 Lamp 100 Circuit Boards 200 light source 300 Optical resin layer 400 phosphor layer 410 Resin Matrix 420 Phosphor 500 Optical filter components

Claims

1. A circuit board; a plurality of light sources provided on an upper surface of the circuit board; an optical resin layer provided on the upper surface of the circuit board so as to cover the plurality of light sources; a phosphor layer provided in close contact with an upper surface of the optical resin layer, The phosphor layer is A resin matrix; a phosphor dispersed within the resin matrix; the optical resin layer and the resin matrix each contain an addition reaction type silicone resin composition, the addition reaction type silicone resin composition containing a methyl group-containing silicone composition and a curing catalyst; the addition reaction type silicone resin composition contains the curing catalyst in an amount of 0.0001 to 5 parts by weight per 100 parts by weight of the methyl group-containing silicone composition, The methyl group-containing silicone composition comprises 65 to 85% by weight of a methyl group-containing polysiloxane, 13 to 30% by weight of a methyl group-containing chlorosilane compound, and 1 to 8% by weight of a methyl group-containing hydrogen polysiloxane.

2. A circuit board; a plurality of light sources provided on an upper surface of the circuit board; an optical resin layer provided on the upper surface of the circuit board so as to cover the plurality of light sources; a phosphor layer provided in close contact with an upper surface of the optical resin layer, The phosphor layer is A resin matrix; a phosphor dispersed within the resin matrix; The phosphor has a refractive index of 1.5 or more, The optical resin layer and the resin matrix each have a refractive index of 1.3 or more and 1.8 or less.

3. the phosphor has a refractive index of 1.5 or more and 2.5 or less; 3. The automotive lamp according to claim 2, wherein the optical resin layer and the resin matrix each have a refractive index of 1.4 or more and 1.5 or less.

4. A circuit board; a plurality of light sources provided on an upper surface of the circuit board; an optical resin layer provided on the upper surface of the circuit board so as to cover the plurality of light sources; a phosphor layer provided in close contact with an upper surface of the optical resin layer, The phosphor layer is A resin matrix; a phosphor dispersed within the resin matrix; The automotive lamp further includes an optical filter member disposed on the phosphor layer and blocking a portion of wavelengths of visible light emitted from the phosphor layer.

5. The automotive lamp according to claim 4 , wherein the optical filter member is an inner lens or an outer lens.

6. 6. The automotive lamp according to claim 1, wherein the relationship of the following [Formula 1] is satisfied when a distance between the plurality of light sources is P, a thickness of the optical resin layer is T1, and a thickness of the phosphor layer is T2. [Formula 1] 0.1≦(T1+T2) / P≦2.0

7. 6. The automotive lamp according to claim 1, wherein the light source has an emission peak wavelength of 420 nm or more and 470 nm or less.

8. The phosphor includes a red phosphor having a size of 1 μm or more and 100 μm or less, 6. The automotive lamp according to claim 1, wherein the red phosphor comprises at least one of a garnet-based phosphor, a silicate-based phosphor, a nitride-based phosphor, and an oxynitride-based phosphor.

9. The phosphor layer is 6. The automotive lamp according to claim 1, comprising 50 to 99.9% by weight of the resin matrix and 0.1 to 50% by weight of a red phosphor.

10. The phosphor layer is 6. The automotive lamp according to claim 1, further comprising a pattern region in which recessed grooves are formed on the surface of the phosphor layer.

11. 11. The automotive lamp of claim 10, wherein the patterned area is provided on an upper surface of the phosphor layer.

12. A motor vehicle comprising an automotive lamp according to any one of claims 1 to 5.

13. The vehicle according to claim 12, wherein at least a portion of an upper surface of the circuit board is provided with a reflective area that reflects light emitted from the plurality of light sources.

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