Lighting device
Provided is a lighting device, comprising: a light source module comprising: at least one light source disposed on a printed circuit board; and a resin layer disposed on the printed circuit board so that the light source is embedded; a light reflection member formed on at least any one of one side surface and another side surface of the resin layer; and a diffusion plate having an upper surface formed on the light source module, and a side wall which is integrally formed with the upper surface and formed to extend in a lower side direction and which is adhered onto the light reflection member, wherein a first separated space is formed between the light source module and the upper surface of the diffusion plate, whereby flexibility of the product itself can be secured, and durability and reliability of the product can be also improved.
1 . A light source module for vehicle lamps, comprising:
a substrate;
a heat dissipation member disposed below the substrate;
a plurality of light sources disposed on the substrate;
a resin layer disposed on the substrate and covering the plurality of light sources; and
an optical pattern layer disposed on the resin layer,
wherein the plurality of light sources are side view type light-emitting elements configured to emit light toward a side of the resin layer,
wherein the optical pattern layer comprises a first optical sheet disposed on the resin layer, a second optical sheet disposed on the first optical sheet, a plurality of optical patterns disposed between the first optical sheet and the second optical sheet, and an adhesive layer disposed between the first optical sheet and the second optical sheet,
wherein a part of the adhesive layer is disposed between the plurality of optical patterns and an upper surface of the first optical sheet or a lower surface of the second optical sheet, and
wherein an air gap is disposed around each of the plurality of optical patterns to separate the adhesive layer from the optical patterns.
2 . The light source module for vehicle lamps of claim 1 ,
wherein the optical pattern layer comprises one or more optical sheets disposed on the second optical sheet.
3 . The light source module for vehicle lamps of claim 1 ,
wherein the plurality of light sources are arranged in a row in a longitudinal direction of the substrate and includes a region in which intervals between adjacent light sources among the plurality of light sources are different.
4 . The light source module for vehicle lamps of claim 1 ,
wherein the optical pattern layer is aligned with the plurality of light sources.
5 . The light source module for vehicle lamps of claim 1 ,
wherein the adhesive layer comprises a first region overlapping with the plurality of optical patterns and a second region not overlapping with the plurality of optical patterns.
6 . The light source module for vehicle lamps of claim 5 ,
wherein a thickness of the first region of the adhesive layer includes a region that is different from a thickness of the second region.
7 . The light source module for vehicle lamps of claim 5 ,
wherein a thickness of the plurality of optical patterns includes a region that is thicker than a thickness of the first region of the adhesive layer.
8 . The light source module for vehicle lamps of claim 5 ,
wherein the air gap includes a plurality of air gaps.
9 . The light source module for vehicle lamps of claim 8 ,
wherein a size of at least one of the plurality of air gaps is different from sizes of other air gaps.
10 . The light source module for vehicle lamps of claim 1 ,
wherein the plurality of optical patterns includes a light shielding pattern that blocks part of light emitted from the plurality of light sources.
11 . The light source module for vehicle lamps of claim 1 ,
wherein the plurality of optical patterns includes a region in which a pattern density decreases or a size of the optical patterns decreases as distance from the light sources increases.
12 . The light source module for vehicle lamps of claim 1 ,
wherein the plurality of optical patterns includes a plurality of patterns stacked in a thickness direction of the resin layer.
13 . The light source module for vehicle lamps of claim 12 ,
wherein the stacked plurality of patterns includes a diffusion pattern and a light shielding pattern.
14 . The light source module for vehicle lamps of claim 12 ,
wherein the stacked plurality of patterns includes a first diffusion pattern, a second diffusion pattern, and a light shielding pattern disposed between the first diffusion pattern and the second diffusion pattern.
15 . The light source module for vehicle lamps of claim 1 ,
wherein the plurality of optical patterns includes light shielding ink.
16 . The light source module for vehicle lamps of claim 1 , comprising a reflection unit disposed between the resin layer and the substrate.
17 . A lighting device for vehicle lamps, comprising:
a substrate;
a heat dissipation member disposed below the substrate;
a plurality of light sources disposed on the substrate;
a resin layer disposed on the substrate and covering the plurality of light sources;
an optical pattern layer disposed on the resin layer; and
a diffusion plate or a plurality of micro lenses disposed on the optical pattern layer,
wherein the plurality of light sources are side view type light-emitting elements configured to emit light toward a side of the resin layer, and
wherein the optical pattern layer comprises a first optical sheet disposed on the resin layer, a second optical sheet disposed on the first optical sheet, a plurality of optical patterns disposed between the first optical sheet and the second optical sheet, and an adhesive layer disposed between the first optical sheet and the second optical sheet,
wherein a part of the adhesive layer is disposed between the plurality of optical patterns and the first optical sheet, and
wherein an air gap is disposed around each of the plurality of optical patterns to separate the adhesive layer from the optical patterns.
18 . The lighting device for vehicle lamps of claim 17 , comprising a first air gap disposed between an upper surface of the diffusion plate and the resin layer.
19 . The lighting device for vehicle lamps of claim 18 ,
wherein a thickness of the first air gap is greater than 0 and less than or equal to 30 mm.
20 . The lighting device for vehicle lamps of claim 17 ,
wherein the optical pattern layer comprises one or more optical sheets disposed on the second optical sheet.