TL retrofit LED module inside sealed glass tube

• US 8,829,551 B2
• Filed: 06/30/2011
• Issued: 09/09/2014
• Est. Priority Date: 07/01/2010
• Status: Active Grant

• Current Assignee: Signify Holding B.V. (Signify N.V.)
• Original Assignee: Koninklijke Philips N.V.
• Inventors: Hikmet, Rifat Ata Mustafa, Kriege, Jan Cornelis, Cillessen, Johannes Franciscus Maria, Wegh, Ren Theodorus, Van Der Wel, Pieter Joseph Clara, Driessens, Rene Maarten Arjan
• Primary Examiner(s): Huynh, Andy
• Application Number:
  US13/806,305
• Publication Number:
  US 20130092969A1
• Time in Patent Office: 1,167 Days
• Field of Search: 257/98, 257/99, 257/E23.137, 257/E51.018
• US Class Current: 257/98
• CPC Class Codes: F21K 9/232 specially adapted for generating an essentially omnidirectional light distribution, e.g. with a glass bulb
• CPC Class Codes: F21K 9/27 Retrofit light sources for lighting devices with two fittings for each light source, e.g. for substitution of fluorescent tubes
• CPC Class Codes: F21K 9/64 using wavelength conversion means distinct or spaced from the light-generating element, e.g. a remote phosphor layer
• CPC Class Codes: F21V 3/00 Globes; Bowls; Cover glasses with refracting properties F21V5/00; with reflecting properties F21V7/00; characterised by cooling arrangements F21V29/506
• CPC Class Codes: F21V 31/03 with provision for venting for vehicle head lights F21S45/33; for vehicle rear lights F21S41/192
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2107/90 on two opposite sides of supports or substrates
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: H01L 25/0753 the devices being arranged next to each other
• CPC Class Codes: H01L 2924/00 Indexing scheme for arrangements or methods for connecting or disconnecting semiconductor or solid-state bodies as covered by H01L24/00
• CPC Class Codes: H01L 2924/0002 Not covered by any one of groups H01L24/00, H01L24/00 and H01L2224/00
• CPC Class Codes: H01L 33/50 Wavelength conversion elements
• CPC Class Codes: H01L 33/507 the elements being in intimate contact with parts other than the semiconductor body or integrated with parts other than the semiconductor body
• CPC Class Codes: H01L 33/56 Materials, e.g. epoxy or silicone resin
• CPC Class Codes: Y02B 20/30 Semiconductor lamps, e.g. solid state lamps [SSL] light emitting diodes [LED] or organic LED [OLED]

Abstract

This invention relates to a light emitting diode device (100) including an outer casing (102), a light emitting diode element (114), which includes at least one light emitting diode (114a), arranged within the outer casing, a light outlet member (108) constituting a part of the outer casing, a sealed cavity (104) containing a controlled atmosphere, and a seal (110) arranged to seal the cavity. The light emitting diode device further comprises a remote organic phosphor element (116) arranged in the sealed cavity.

Claims

1. A light emitting diode device comprising

an outer casing,

a light emitting diode element, comprising at least one light emitting diode, arranged within the outer casing,

a light outlet member constituting a part of the outer casing,

a sealed cavity containing a controlled atmosphere,

a seal arranged to seal the cavity,

a remote organic phosphor element arranged in the sealed cavity,

a getter arranged in the sealed cavity, and

a base part, wherein the light outlet member comprises an outer shell, which is attached to the base part by means of the seal, wherein the light emitting diode element is arranged on the base part, wherein the organic phosphor element constitutes a hood, which covers the light emitting diode element and which is arranged between the light emitting diode element and the outer shell, and wherein the getter is arranged between the phosphor hood and the outer shell.

2. The light emitting diode device according to claim 1, wherein the getter is arranged to remove oxygen from the controlled atmosphere.

3. The light emitting diode device according to claim 1, wherein the getter is arranged adjacent to the seal.

4. The light emitting diode device according to claim 1, wherein the getter is arranged in a position where it does not interfere with an output light path.

5. The light emitting diode device according to claim 1, wherein the getter includes a hydrogen gas dispenser.

6. The light emitting diode device according to claim 1, wherein the seal is non-hermetic and permeable to oxygen.

7. The light emitting diode device according to claim 1, wherein the organic phosphor element is a separate element.

8. The light emitting diode device according to claim 1, wherein the light outlet member comprises an outer wall and an inner wall, attached to the outer wall by means of the seal, thereby forming the cavity, wherein the organic phosphor element and the getter are arranged in the cavity between the walls, and wherein the light emitting diode device comprises a further compartment, housing the light emitting diode element.

9. The light emitting diode device according to claim 8, wherein the light outlet member forms a lid covering a further compartment, wherein the further compartment comprises a surrounding wall and a bottom plate, wherein the surrounding wall extends between the bottom plate and the light outlet member, and wherein the light emitting diode element is arranged on the bottom plate.

10. The light emitting diode device according to claim 8, wherein the outer casing is arranged as a retrofit lamp.

11. The light emitting diode device according to claim 8, wherein the light outlet member comprises a cylindrical glass tube, wherein the outer casing further comprises end caps sealingly attached to the cylindrical glass tube.

12. The light emitting diode device according to claim 8, wherein the controlled atmosphere comprises a reactant gas arranged to react with a substance to be produced within the sealed cavity during the operation of the light emitting diode device.

13. The light emitting diode device according to claim 12, further comprising a dispenser arranged to dispense the reactant gas.

14. A light emitting diode device comprising

an outer casing,

a light emitting diode element, comprising at least one light emitting diode, arranged within the outer casing,

a light outlet member constituting a part of the outer casing,

a sealed cavity containing a controlled atmosphere,

a seal arranged to seal the cavity,

a remote organic phosphor element arranged in the sealed cavity, and

a getter arranged in the sealed cavity, wherein the light outlet member comprises an outer wall and an inner wall, attached to the outer wall by means of the seal, thereby forming the cavity, wherein the organic phosphor element and the getter are arranged in the cavity between the walls, and wherein the light emitting diode device comprises a further compartment, housing the light emitting diode element.