Lighting apparatus

• US 9,353,927 B2
• Filed: 07/21/2014
• Issued: 05/31/2016
• Est. Priority Date: 03/29/2010
• Status: Expired due to Fees

• Current Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation), Toshiba Lighting & Technology Corporation (Toshiba Corporation)
• Original Assignee: Kabushiki Kaisha Toshiba (Toshiba Corporation), Toshiba Lighting & Technology Corporation (Toshiba Corporation)
• Inventors: Ishida, Toshiyuki, Takahashi, Akimichi, Yamada, Hirokazu, Kawagoe, Makoto, Kuramochi, Hiroyuki
• Primary Examiner(s): COUGHLIN, ANDREW J
• Application Number:
  US14/336,362
• Publication Number:
  US 20140328068A1
• Time in Patent Office: 680 Days
• US Class Current: 1/1
• CPC Class Codes: F21K 9/20 Light sources comprising attachment means
• CPC Class Codes: F21K 9/68 Details of reflectors forming part of the light source
• CPC Class Codes: F21S 2/005 of modular construction
• CPC Class Codes: F21S 8/086 with lighting device attached sideways of the standard, e.g. for roads and highways
• CPC Class Codes: F21V 15/01 Housings, e.g. material or assembling of housing parts F21V15/02 takes precedence housings forming signs or letters G09F13/04
• CPC Class Codes: F21V 19/001 the light sources being semiconductors devices, e.g. LEDs
• CPC Class Codes: F21V 29/51 using condensation or evaporation of a fluid, e.g. heat pipes
• CPC Class Codes: F21V 29/74 with fins or blades
• CPC Class Codes: F21V 29/75 with fins or blades having different shapes, thicknesses or spacing
• CPC Class Codes: F21V 29/76 with essentially identical parallel planar fins or blades, e.g. with comb-like cross-section
• CPC Class Codes: F21V 5/04 of lens shape
• CPC Class Codes: F21W 2131/103 of streets or roads
• CPC Class Codes: F21Y 2115/10 Light-emitting diodes [LED]

Abstract

A lighting apparatus according to an embodiment includes an optical unit and a body. The Optical unit includes a light emitting module that has a light emitting element, a reflector that controls distribution of light from the light emitting module, and a unit supporting member that supports the light emitting module and the reflector. A plurality of optical units are mounted to the apparatus body such that each optical unit is detachable. And the body includes an irradiating portion that has an opening through which the optical units irradiate light.

Claims

1. A lighting apparatus, comprising:

an optical unit comprising a light emitting module that includes a light emitting element mounted on a substrate, and a lens configured to control distribution of light from the light emitting module;

a unit mounting plate, formed in a flat plate shape, comprising a front surface on which the optical unit is disposed;

a power supply apparatus comprising a lighting circuit configured to cause the light emitting element to light; and

a body configured to comprise a case main body and a top cover being openably and closably provided with the case main body, the case main body having a coupling portion for connecting a support column to the case main body, a non-translucent portion having an irradiating opening provided at a bottom surface of the case main body through which the optical unit irradiates light, and a translucent plate formed in a flat plate shape, the flat plate-shaped translucent plate being arranged in parallel with the flat plate-shaped unit mounting plate and arranged so as to fit the irradiating opening such that the non-translucent portion surrounds an entire outer periphery of the translucent plate and such that the non-translucent portion and the translucent plate are substantially arranged in the same plane,

wherein the optical units and the unit mounting plate are housed in the body such that the optical unit faces the irradiating opening.

2. The lighting apparatus according to claim 1, wherein:

the unit mounting plate comprises a flange provided at an outer peripheral edge of the unit mounting plate, and

the flange is supported by the non-translucent portion as a peripheral area around the translucent plate such that the flat plate-shaped unit mounting plate is attached to and spaced from the irradiation opening of the body.

3. The lighting apparatus according to claim 1, wherein the translucent plate is transparent.