Light emitting apparatus with recessed reflective resin and protruding reflection frame
Provided is a light emitting apparatus that causes no lateral light leakage, enables easy assembly, and allows free selection of the shape of a reflection frame. The light emitting apparatus includes an LED device which is flip-chip mounted on a substrate, a phosphor layer placed on a light emitting surface of the LED device, a reflective resin having a recessed portion formed on the upper surface thereof, the reflective resin covering the side surface of the LED device and the side surface of the phosphor layer, and a reflection frame having a protruded portion formed on the lower surface thereof, the reflection frame being fixed on or above the phosphor layer and the reflective resin by engaging the protruded portion with the recessed portion of the reflective resin.
1. A light emitting apparatus comprising:
an LED device which is flip-chip mounted on a substrate;
a phosphor layer placed on a light emitting surface of the LED device;
a reflective resin having a recessed portion formed on the upper surface thereof, the reflective resin covering the side surface of the LED device and the side surface of the phosphor layer;
a reflection frame having a protruded portion formed on the lower surface thereof, the reflection frame being fixed on or above the phosphor layer and the reflective resin by engaging the protruded portion with the recessed portion of the reflective resin; and
a diffusing resin layer being layered on the upper surfaces of the phosphor layer and the reflective resin, the diffusing resin layer having a through-hole at a position corresponding to the recessed portion of the reflective resin,
wherein the protruded portion of the reflection frame passes through the through-hole of the diffusing resin layer and engages with the recessed portion of the reflective resin.
2. The light emitting apparatus according to claim 1 , wherein the reflection frame comprises a round opening provided above the phosphor layer and a curved reflection surface provided in the opening.
3. The light emitting apparatus according to claim 1 , wherein
the reflective resin has a recessed step formed at the side circumference thereof as the recessed portion, and
the reflection frame has a protruded step formed at the side circumference thereof as the protruded portion.
4. The light emitting apparatus according to claim 3 , wherein
the reflection frame has an entry aperture into which light from the LED device enters through the phosphor layer, and
the upper surface of the phosphor layer is larger than the entry aperture of the reflection frame.
5. The light emitting apparatus according to claim 4 , wherein
the entry aperture of the reflection frame is round, and
the phosphor layer has a rectangular upper surface and corners covered by the reflection frame.
6. The light emitting apparatus according to claim 4 , wherein
the entry aperture of the reflection frame is rectangular with rounded corners, and
the phosphor layer has a rectangular upper surface and corners covered by the reflection frame.
7. The light emitting apparatus according to claim 3 , wherein
the reflection frame has an entry aperture into which light from the LED device enters through the phosphor layer, and
the phosphor layer has an upper surface whose shape and size are nearly identical with the shape and size of the entry aperture of the reflection frame.
8. The light emitting apparatus according to claim 7 , wherein the upper surface of the phosphor layer and the entry aperture of the reflection frame are both round.
9. The light emitting apparatus according to claim 7 , wherein the upper surface of the phosphor layer and the entry aperture of the reflection frame are both rectangular.
10. The light emitting apparatus according to claim 1 , wherein
the reflection frame has an entry aperture into which light from the LED device enters through the phosphor layer, and an exit aperture at a position opposing to the entry aperture, and
the light emitting apparatus further comprises a lens placed so as to cover the exit aperture of the reflection frame.