Vehicle lamp

1. A vehicle lamp comprising a lamp chamber and a plastic decorative member arranged in the lamp chamber,

wherein the plastic decorative member includes a portion having skin layers and a core layer which are formed by sandwich molding, and

wherein the core layer is formed of resin material greater in heat-resistance than resin material for the skin layers,

wherein the skin layers comprise a first skin layer and a second skin layer,

wherein the first skin layer and the second skin layer are formed of a same material,

wherein the first skin layer is directly formed on an obverse surface of the core layer,

wherein the second skin layer is directly formed on a reverse surface of the core layer, and

wherein a metallic vapor-deposited layer is directly formed on a surface of the first skin layer.

2. The vehicle lamp according to claim 1 , wherein the plastic decorative member further includes a portion that does not have a core layer and has skin layers.

3. The vehicle lamp according to claim 1 , wherein the core layer is made of at least one of high heat polycarbonate, polybutylene terephthalate and polyethylene terephthalate.

4. The vehicle lamp according to claim 1 , wherein the skin layers are made of polycarbonate.

5. The vehicle lamp according to claim 1 , wherein the plastic decorative member comprises an extension.

6. The vehicle lamp according to claim 1 , wherein the plastic decorative member comprises a reflector.

7. A vehicle lamp comprising:

a body;

a lamp cover for covering the front of the body;

a lamp chamber constituted by the body and the lamp cover;

a light source portion; and

a plastic decorative member, arranged in the lamp chamber, including skin layers and a core layer which are formed by sandwich molding,

wherein the core layer is located in at least a portion that requires heat-resistance in the decorative member and formed of resin material greater in heat-resistance than resin material for the skin layers,

wherein the skin layers comprise a first skin layer and a second skin layer,

wherein the first skin layer and the second skin layer are formed of a same material,

wherein the first skin layer is directly formed on an obverse surface of the core layer,

wherein the second skin layer is directly formed on a reverse surface of the core layer, and

wherein a metallic vapor-deposited layer is directly formed on a surface of the first skin layer.

8. The vehicle lamp according to claim 7 , wherein the skin layers are formed of resin material offering a good external appearance.

9. The vehicle lamp according to claim 7 , wherein the core layer is formed only in a portion that requires heat-resistance.

10. The vehicle lamp according to claim 9 , wherein a gate mark of the core layer is formed in a hidden portion from the outside.

11. The vehicle lamp according to claim 7 , wherein the core layer is made of at least one of high heat polycarbonate, polybutylene terephthalate and polyethylene terephthalate.

12. The vehicle lamp according to claim 7 , wherein the skin layers are made of polycarbonate.

13. The vehicle lamp according to claim 7 , wherein the plastic decorative member comprises an extension.

14. The vehicle lamp according to claim 7 , wherein the plastic decorative member comprises a reflector.

15. The vehicle lamp according to claim 7 , wherein the plastic decorative member is configured such that a boundary between resin materials that have different heat resistances does not appear on an exterior surface of the plastic decorative member.

16. The vehicle lamp according to claim 7 , wherein the core layer is configured such that the core layer it exhibits no substantial thermal deterioration at a temperature of 130° C.

17. The vehicle lamp according to claim 7 , wherein the plastic decorative member is arranged inside the lamp cover and outside a convex lamp cover.