Lighting Device

• US 20120113657A1
• Filed: 11/04/2011
• Published: 05/10/2012
• Est. Priority Date: 11/05/2010
• Status: Active Grant

• Current Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Original Assignee: Semiconductor Energy Laboratory Co., Ltd.
• Inventors: Wakimoto, Kenichi
• Granted Patent: US 8,727,586 B2
• Time in Patent Office: Days
• US Class Current: 362/398
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21K 9/60 Optical arrangements integrated in the light source, e.g. for improving the colour rendering index or the light extraction
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 19/04 with provision for changing light source, e.g. turret auxiliary devices for cleaning, placing, or removing incandescent lamps H01K3/32, fluorescent lamps H01J9/006
• CPC Class Codes: F21V 21/096 Magnetic devices
• CPC Class Codes: F21Y 2105/00 Planar light sources
• CPC Class Codes: F21Y 2105/10 comprising a two-dimensional array of point-like light-generating elements
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]
• CPC Class Codes: F21Y 2115/15 Organic light-emitting diodes [OLED]
• CPC Class Codes: H01R 13/7038 making use of a remote controlled switch, e.g. relais, solid state switch activated by the engagement of the coupling parts
• CPC Class Codes: H01R 33/96 with switch operated by engagement or disengagement of coupling

Abstract

To provide a lighting device where a light-emitting body including light-emitting elements whose light-emitting regions are spread out in a plane or light-emitting elements in which a plurality of light-emitting regions are arranged in a plane can be exchanged easily. To provide a lighting device in which a terminal of the light-emitting body can be electrically connected to a contact of a mounting portion easily. A light-emitting body including light-emitting elements whose light-emitting regions are spread out in a plane or light-emitting elements in which a plurality of light-emitting regions are arranged in a plane may be fixed by a magnetic force so that a terminal of the light-emitting body is in contact with the contact of the mounting portion.

Claims

1. A lighting device comprising:

a light-emitting body comprising an optical member, a sealing member, at least a first terminal and a second terminal, a light-emitting element sealed between the optical member and the sealing member, and a magnetic member; and

a mounting portion comprising a magnet, and at least a first contact and a second contact,

wherein the first terminal and the second terminal are in contact with the first contact and the second contact, respectively, and

wherein the light-emitting body is configured to be detachably fixed to the mounting portion by the magnet and the magnetic member.

2. The lighting device according to claim 1, wherein each of a height of the first contact and a height of the second contact is variable by contact between the light-emitting body and the first contact or the second contact.

3. The lighting device according to claim 1, wherein the magnetic member is fixed to the optical member or the sealing member.

4. The lighting device according to claim 1, wherein the sealing member comprises the magnetic member.

5. The lighting device according to claim 1, wherein the magnetic member comprises iron, cobalt, or manganese.

6. A lighting device comprising:

a light-emitting body comprising an optical member, a sealing member, at least a first terminal and a second terminal, a light-emitting element sealed between the optical member and the sealing member, and a magnetic member;

a mounting portion comprising a magnet, and at least a first contact and a second contact; and

a spacer on the mounting portion, the spacer being in contact with the light-emitting body,

wherein the first terminal and the second terminal are in contact with the first contact and the second contact, respectively,

wherein the light-emitting body is configured to be detachably fixed to the mounting portion by the magnet and the magnetic member, and

wherein a height of the spacer is higher than a height of the magnet.

7. The lighting device according to claim 6, wherein each of a height of the first contact and a height of the second contact is variable by contact between the light-emitting body and the first contact or the second contact.

8. The lighting device according to claim 6, wherein the magnetic member is fixed to the optical member or the sealing member.

9. The lighting device according to claim 6, wherein the sealing member comprises the magnetic member.

10. The lighting device according to claim 6, wherein the magnetic member comprises iron, cobalt, or manganese.

11. The lighting device according to claim 6, wherein a distance between the magnet and the magnetic member is less than or equal to 10 mm.

12. A lighting device comprising:

a light-emitting body comprising an optical member, a sealing member, at least a first terminal and a second terminal, a light-emitting element sealed between the optical member and the sealing member, and a magnetic member;

a mounting portion comprising a magnet, at least a first contact and a second contact, a sliding mechanism, an elastic body, and a switch,

wherein the first terminal and the second terminal are in contact with the first contact and the second contact, respectively,

wherein the light-emitting body is configured to be detachably fixed to the mounting portion by the magnet and the magnetic member, and

wherein the switch is configured to supply power to the light-emitting body through the first contact and the second contact, and is connected to the sliding mechanism.

13. The lighting device according to claim 12, wherein each of a height of the first contact and a height of the second contact is variable by contact between the light-emitting body and the first contact or the second contact.

14. The lighting device according to claim 12, wherein the magnetic member is fixed to the optical member or the sealing member.

15. The lighting device according to claim 12, wherein the sealing member comprises the magnetic member.

16. The lighting device according to claim 12, wherein the magnetic member comprises iron, cobalt, or manganese.