Illumination device
View Patent ↗An illumination device includes a point light source disposed on a base substrate, a package in which the point light source is sealed with a wavelength converter for converting a wavelength of light from the point light source, an optical member for controlling light from the package, a housing with an attachment face for holding the optical member and a bonding part for holding the package, and a circuit board on which the package is mounted. A space is provided between the wavelength converter and the optical member. The bonding part of the housing is directly positioned and fixed to a reference face of the package. This makes the heat generated from the LED chip released via the housing. Accordingly, a heat quantity transferred to the lens can be reduced.
1. An illumination device comprising:
a point light source disposed on a base substrate;
a package in which the point light source is sealed with a wavelength converter for converting a wavelength of light from the point light source;
an optical member for controlling light from the package;
a housing including an attachment face for holding the optical member and a bonding part for holding the package; and
a circuit board on which the package is mounted;
wherein
a space is provided between the wavelength converter and the optical member, and
a face of the package where the housing is attached is defined as a reference face, and the bonding part of the housing is directly positioned and fixed to the reference face,
wherein the housing is above the circuit board with a space therebetween.
2. The illumination device of claim 1 , wherein a concavity is provided in the base substrate, and the point light source is disposed in the concavity.
3. The illumination device of claim 1 , wherein an outer wall of the housing has a fin shape.
4. The illumination device of claim 1 , wherein an inner wall of the housing has a reflector shape.
5. The illumination device of claim 2 , wherein an inner wall of the concavity in the base substrate has a reflector shape.
6. The illumination device of claim 1 , wherein the reference face is a face on a periphery of the base substrate where the wavelength converter is not formed.
7. The illumination device of claim 1 , wherein the package and the circuit board are spaced from each other.