LIGHT EMITTING ELEMENT LAMP AND LIGHTING EQUIPMENT

• US 20100225220A1
• Filed: 10/15/2008
• Published: 09/09/2010
• Est. Priority Date: 10/16/2007
• Status: Active Grant

• Current Assignee: Toshiba Lighting & Technology Corporation (Toshiba Corporation)
• Original Assignee: Toshiba Lighting & Technology Corporation (Toshiba Corporation)
• Inventors: Osawa, Shigeru, Tanaka, Toshiya, Hisayasu, Takeshi
• Granted Patent: US 8,384,275 B2
• Time in Patent Office: Days
• US Class Current: 313/46
• CPC Class Codes: F21K 9/23 Retrofit light sources for lighting devices with a single fitting for each light source, e.g. for substitution of incandescent lamps with bayonet or threaded fittings
• 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 9/233 specially adapted for generating a spot light distribution, e.g. for substitution of reflector lamps
• CPC Class Codes: F21K 9/238 Arrangement or mounting of circuit elements integrated in the light source
• CPC Class Codes: F21V 19/0035 the fastening means being capable of simultaneously attaching of an other part, e.g. a housing portion or an optical component
• CPC Class Codes: F21V 19/0055 by screwing
• CPC Class Codes: F21V 23/002 Arrangements of cables or conductors inside a lighting device, e.g. means for guiding along parts of the housing or in a pivoting arm
• CPC Class Codes: F21V 23/006 the substrate being distinct from the light source holder
• CPC Class Codes: F21V 29/503 of light sources cooling arrangements structurally associated with gas-discharge or vapour-discharge lamps H01J61/52; cooling arrangements structurally associated with electric incandescent lamps H01K1/58; cooling arrangements structurally associated with light-emitting diodes H01L33/64
• CPC Class Codes: F21V 29/505 of reflectors
• CPC Class Codes: F21V 29/507 of means for protecting lighting devices from damage, e.g. housings
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: F21V 7/00 Reflectors for light sources characterised by cooling arrangements F21V29/505
• CPC Class Codes: F21Y 2105/16 square or rectangular, e.g. for light panels
• CPC Class Codes: F21Y 2105/18 annular; polygonal other than square or rectangular, e.g. for spotlights or for generating an axially symmetrical light beam
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

An object of the present invention is to provide a light emitting element lamp and a lighting equipment effectively suppressing a temperature rising of a substrate on which a light emitting element is mounted by using a reflector. The present invention provides a light emitting element lamp 1 including: a heat-conductive reflector 2 having an emission opening portion and formed to be widened toward the emission opening portion with a reflecting surface 2a being provided on an inner surface side and an outer peripheral surface being exposed to an outside; a base 4 connected to the reflector 2 via a cover 3; a heat-conductive heat radiating member 8 provided on an inner peripheral surface of the reflector 2 and thermally connected to the reflector 2; a substrate 7 having a light emitting element 6 mounted thereon and attached to the heat radiating member 8 with a substrate surface being thermally connected to the heat radiating member 8 in a surface contact state; a lighting circuit 9 housed in the cover 3 to light the light emitting element 6; and a translucent cover 5 for covering the emission opening portion 2c of the reflector 2.

Claims

1. A light emitting element lamp comprising:

a heat-conductive reflector provided with an emission opening portion and formed to be widened toward the emission opening portion, and having a reflecting surface being provided on an inner surface side and an outer peripheral surface being exposed to an outside;

a base connected to the reflector through a cover;

a heat-conductive heat radiating member provided on the inner peripheral surface of the reflector and thermally connected to the reflector;

a substrate having a light emitting element mounted thereon and attached to the heat radiating member with a substrate surface being thermally connected to the heat radiating member in a surface contact state;

a lighting circuit housed in the cover to light the light emitting element; and

a translucent cover covering the emission opening portion of the reflector.

2. The light emitting element lamp according to claim 1, wherein the heat radiating member has a surface continuous to the inner peripheral surface of the reflector.

3. The light emitting element lamp according to claim 1, wherein the heat radiating member is formed integrally with the reflector.

4. A lighting equipment comprising:

an equipment body provided with a socket; and

a light emitting element lamp according to claim 1 to be mounted to the socket of the equipment body.