Light emitting diode package
View Patent ↗An LED package in which an LED chip a body has a cup part housing an LED chip. The cup part has a step formed in the outer circumference of the top thereof. A lens is mounted on the cup part, and has a flange extended downward from the outer circumference of the lens along the outside wall of the cup part to form a gap between the flange and the downward step of the cup part and to seal the gap from the outside. Resin material fills a space formed between the underside of the lens and the cup part and at least partially the gap formed between the step of the cup part and the lens flange. The resin material is prevented from leaking out of the LED package. The LED package of the invention prevents the creation of voids in the resin material surrounding the LED chip or the leakage of the resin material to the outside.
1. A Light Emitting Diode (LED) package comprising:
an LED chip;
a resin body having an integral cup part housing the LED chip, the cup part having a step formed in the outer circumference of the top thereof;
a lens unit mounted on the cup part, said lens unit having a lens and an integral flange extending downward from the outer circumference of the lens along an outside wall of the cup part to form a gap between the flange and the step of the cup part and to seal the gap from the outside;
resin material filling a space formed between the underside of the lens and the cup part and at least partially the gap formed between the step of the cup part and the lens flange; and
a fastening arrangement comprising:
a hook integral with the bottom of the lens flange; and
a projection which is integral with the outside wall of the resin body and which is configured to be engaged by the hook,
whereby the resin material is prevented from leaking out of the LED package.
2. The LED package according to claim 1 , wherein the step is formed integrally along the entire outer circumference of the top of the cup part.
3. The LED package according to claim 1 , wherein the step comprises a plurality of step parts spaced at a predetermined gap along the outer circumference of the top of the cup part.
4. The LED package according to claim 1 , wherein the hook and projection are provided in the same number.
5. The LED package according to claim 1 , wherein the outer circumference of the lens is laterally projected from the lens and bent downward to form the flange.
6. The LED package according to claim 1 , further comprising a submount supporting the LED chip within the space of the cup part.
7. A Light Emitting Diode (LED) package comprising:
an LED chip;
a resin body having an integral cup part housing the LED chip, the cup part having a groove formed in the outer circumference of the top thereof;
a lens unit mounted on the cup part, said lens unit having a lens and an integral flange extending downward from the outer circumference of the lens along the outside wall of the cup part to seal the groove of the cup part from the outside; and
resin material filling a space formed between the underside of the lens and the cup part and at least partially the groove of the cup part; and
a fastening arrangement comprising:
a hook which is integral with a bottom of the lens flange; and
a projection which is integral with an outside wall of the resin body and which is configured to be engaged by the hook,
whereby the resin material is prevented from leaking out of the LED package.
8. The LED package according to claim 7 , wherein the groove is formed integrally along the entire outer circumference of the top of the cup part.
9. The LED package according to claim 7 , wherein the groove comprises a plurality of groove parts spaced at a predetermined gap along the outer circumference of the top of the cup part.
10. The LED package according to claim 7 , wherein the hook and projection are provided in the same number.
11. The LED package according to claim 7 , wherein the outer circumference of the lens is laterally projected from the lens and bent downward to form the flange.
12. The LED package according to claim 7 , further comprising a submount supporting the LED chip within the space of the cup part.
13. A Light Emitting Diode (LED) package comprising:
a resin body having a recess in which an LED chip is disposed; and
a lens unit mounted on the resin body to close the recess and to retain a resin material within the recess, the lens unit having a lens a plurality of downwardly depending flanges which are integral with the lens and which are each formed with apertures configured to receive projections that are formed on the resin and which are respectively configured to engage in the apertures and hold lens unit on the resin body.
14. The LED package according to claim 13 , wherein the resin body is formed with a step about the recess into which a portion of the resin material can be displaced from the recess when the lens unit is disposed on the resin body, the step being configured to be enclosed by the lens unit so that the resin material which is trapped in the step by the lens unit comprises a sealing gasket.
15. The LED package according to claim 14 , wherein the sealing gasket comprises an O-ring.