Light emitting device and illumination apparatus using same
View Patent ↗A light emitting device includes a solid light-emitting element; a mounting substrate mounting the solid light-emitting element thereon; an encapsulating member encapsulating the solid light-emitting element; and a lead frame electrically connected to the solid light-emitting element through a wire. The lead frame is arranged on a rear surface of the mounting substrate, and the mounting substrate includes a front mounting surface on which the solid light-emitting element is mounted. The front mounting surface having a smooth surface region covered with the encapsulating member. The mounting substrate further includes a wire hole through which the wire extends from the front mounting surface of the mounting substrate to the rear surface thereof.
1. A light emitting device, comprising:
a solid light-emitting element;
a mounting substrate mounting the solid light-emitting element thereon;
an encapsulating member encapsulating the solid light-emitting element; and
a lead frame electrically connected to the solid light-emitting element through a wire,
wherein the lead frame is arranged on a rear surface of the mounting substrate, the mounting substrate including a front mounting surface on which the solid light-emitting element is mounted, the front mounting surface having a smooth surface region covered with the encapsulating member; and a wire hole through which the wire extends from the front mounting surface of the mounting substrate to the rear surface thereof, and
wherein the lead frame includes a stress-relieving portion bent perpendicularly to a longitudinal direction of the lead frame.
2. The light emitting device of claim 1 , wherein the mounting substrate is formed of a metal plate.
3. The light emitting device of claim 1 , wherein the mounting substrate is configured to serve as a light reflecting member for reflecting light emitted from the solid light-emitting element.
4. The light emitting device of claim 1 , wherein the mounting substrate is formed of a conductive member, and an insulating member is interposed between the mounting substrate and the lead frame.
5. The light emitting device of claim 1 , wherein the mounting surface of the mounting substrate includes a light reflecting portion for reflecting light emitted from the solid light-emitting element.
6. The light emitting device of claim 1 , wherein the encapsulating member is made of a resin material containing a phosphor or a pigment.
7. The light emitting device of claim 1 , further comprising: a diffusing member covering the encapsulating member either directly through an air layer, the mounting surface extending to a portion of the mounting substrate covered by the diffusing member.
8. The light emitting device of claim 7 , wherein the diffusing member is made of a resin material or a sheet-like material containing a phosphor or a pigment.
9. The light emitting device of claim 1 , wherein the lead frame makes contact with the rear surface of the mounting substrate.
10. The light emitting device of claim 1 , wherein the mounting substrate includes an extension portion surrounding the mounting surface.
11. The light emitting device of claim 10 , wherein the extension portion includes a peripheral portion that is bent to the side of the solid light-emitting element.
12. The light emitting device of claim 1 , wherein the lead frame is covered with an insulating member.
13. The light emitting device of claim 1 , wherein the solid light-emitting element is provided in plural, the encapsulating member encapsulating the plural solid light-emitting elements.
14. The light emitting device of claim 13 , wherein the solid light-emitting elements are arranged along a line or in a matrix pattern.
15. An illumination apparatus comprising the light emitting device of claim 1 .