Illumination device
An illumination device includes a supporting base, and a light-emitting element inserted in the supporting base. The light-emitting element includes a substrate having a supporting surface and a side surface, a light-emitting chip disposed on the supporting surface, and a first wavelength conversion layer covering the light-emitting chip and only a portion of the supporting surface without covering the side surface.
1. An illumination device comprising:
a supporting base; and
a light-emitting element inserted in the supporting base, and comprising:
a substrate having a supporting surface and a side surface;
a light-emitting chip disposed on the supporting surface; and
a first wavelength conversion layer covering the light-emitting chip and only a portion of the supporting surface without covering the side surface.
2. The illumination device of claim 1 , further comprising a first connecting conductor formed on the supporting surface and electrically connected to the light-emitting chip by a wire.
3. The illumination device of claim 2 , wherein the first connecting conductor extends to an edge of the substrate.
4. The illumination device of claim 2 , further comprising a second connecting conductor, wherein the first connecting conductor and the second connecting conductor are disposed at opposite sides of the light-emitting chip.
5. The illumination device of claim 1 , wherein the supporting base has a socket for receiving the light-emitting element.
6. The illumination device of claim 1 , wherein the supporting base is inclined with respect to the light-emitting element by an angle of 30°-150°.
7. The illumination device of claim 1 , further comprising a second wavelength conversion layer, wherein the substrate further comprises a main surface opposite to the supporting surface and covered by the second wavelength conversion layer.
8. The illumination device of claim 7 , wherein the first wavelength conversion layer and the second wavelength conversion layer have different areas.
9. The illumination device of claim 7 , wherein the second wavelength conversion layer does not cover the side surface.
10. The illumination device of claim 1 , further comprising a lamp housing enclosing the light-emitting element.
11. An illumination device comprising:
a supporting base; and
a light-emitting element inserted in the supporting base and comprising:
a substrate;
a plurality of light-emitting chips disposed on the supporting base, and having a first chip with a first end, and a last chip with a last end; and
a first connecting conductor disposed on the supporting base and extending beyond the first end.
12. The illumination device of claim 11 , further comprising a wavelength conversion layer covering the plurality of light-emitting chips.
13. The illumination device of claim 12 , wherein the first connecting conductor is longer than the wavelength conversion layer.
14. The illumination device of claim 12 , wherein the wavelength conversion layer has an area less than that of the substrate.
15. The illumination device of claim 11 , wherein the first connecting conductor extends to an edge of the substrate.
16. The illumination device of claim 11 , wherein the supporting base has a socket for receiving the substrate.
17. The illumination device of claim 11 , wherein the first connecting conductor is electrically connected to at least one of the plurality of light-emitting chips by a wire.
18. The illumination device of claim 11 , further comprising a second connecting conductor disposed on the substrate and electrically connected to the plurality of light-emitting chips.
19. The illumination device of claim 11 , further comprising a lamp housing enclosing the light-emitting element.
20. The illumination device of claim 19 , further comprising a base connected to the lamp housing.