Lamp

• US 9,239,151 B2
• Filed: 06/22/2015
• Issued: 01/19/2016
• Est. Priority Date: 11/09/2011
• Status: Active Grant

• Current Assignee: Iwasaki Electric Company Limited
• Original Assignee: EYE Lighting Systems Corp. (Iwasaki Electric Company Limited), Iwasaki Electric Company Limited
• Inventors: Mikami, Takahiro, Kimoto, Yuuichi, Baba, Nobuyuki, Imanari, Takayoshi
• Primary Examiner(s): Husar, Stephen F
• Application Number:
  US14/746,029
• Publication Number:
  US 20150292718A1
• Time in Patent Office: 211 Days
• US Class Current: 1/1
• 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: F21V 17/12 by screwing
• CPC Class Codes: F21V 17/164 the parts being subjected to bending, e.g. snap joints
• CPC Class Codes: F21V 19/003 Fastening of light source holders, e.g. of circuit boards or substrates holding light sources
• 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 27/02 Cable inlets
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/83 the elements having apertures, ducts or channels, e.g. heat radiation holes
• CPC Class Codes: F21V 31/00 Gas-tight or water-tight arrangements
• CPC Class Codes: F21V 31/005 Sealing arrangements therefor
• CPC Class Codes: F21Y 2101/00 Point-like light sources
• CPC Class Codes: F21Y 2103/10 comprising a linear array of point-like light-generating elements
• CPC Class Codes: F21Y 2107/30 on the outer surface of cylindrical surfaces, e.g. rod-shaped supports having a circular or a polygonal cross section
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lamp achieves high output power like an HID lamp by using a light emitting element(s) as a light source. A mount board having LED mounted thereon is provided on the surface of a base member, and there are provided plural flat plate type light source units arranged around an axial line while the back surfaces thereof faces inwards, and a support member provided on the axial line. The plural light source units are supported on the support member, and a space through which air flows is provided at the back surface side of each base member.

Claims

1. A lamp including:

a plurality of flat plate type light source units each of which has a mount board which is mounted on a surface of a base member

and on which a plurality of light emitting elements are mounted, said light source units being arranged around an axial line while back surfaces of the base members face inwards; and

a storage member that is provided on the axial line to accommodate lead wires from the plurality of light source units, wherein

a space through which air flows is provided at a back surface side of each base member,

the storage member accommodates the respective lead wires from the plurality of light source units such that the respective lead wires are not exposed to the space through which air flows, the light emitting elements are molded with resin material on the surfaces thereof so that the substantially whole surfaces of the light emitting elements emit light, and

an occupancy rate of the light emitting elements to a surface area of the mount board is more than a majority.

2. The lamp according to claim 1, wherein the plurality of light source units are supported by a storage body while a gap is formed between the respective adjacent light source units.

3. The lamp according to claim 2, wherein one ends of the plurality of light source units are cantilevered to the periphery of the storage body.

4. The lamp according to claim 3, wherein the other ends of the plurality of light source units are joined to one another.