US 8,770,781 B2Granted

Lighting apparatus

AssigneeSharp Kabushiki Kaisha

InventorsHiroyuki Yamamoto, Osamu Bando, Noritaka Okamura

Life of this patent

Estimating the term…

Loading patent…

Abstract

It is expected to provide a lighting apparatus that can improve the radiation performance. In a lighting apparatus that includes a light source unit and a heat sink radiating the heat generated by the light source unit and is recessed and installed to an attaching hole opened on a mounted portion, the heat sink is exposed at least partially to a side where the light from the light source unit is emitted from the attaching hole. For example, when installed to a ceiling having a heat insulated structure, the heat generated by the light source unit and transferred to the heat sink is transferred inside the heat sink and radiated from one part to the air at the side where the light from the light source unit is emitted from the attaching hole. Therefore, the radiation performance can be improved.

Claims15

Dependent claims

A recessed lighting apparatus that emits light in a predetermined direction, comprising:

a light source that generates the light;
a radiator that radiates heat generated by the light source;
a terminal block that is connected to plural electric wires for supplying power or signal;
and
plural mounting members,
wherein
a part of the radiator is exposed in a direction opposite to the predetermined direction,
a direction for connecting the plural electric wires to the terminal block is substantially equal to a direction from the terminal block to at least one of the plural mounting members,
the terminal block is configured with a first terminal block portion and a second terminal block portion,
the first terminal portion is connected to an electric wire having a higher rigidity than an electric wire connected to the second terminal portion, and
a direction from the first terminal block portion to the second terminal block portion is substantially equal to the predetermined direction.

8 more elements

Dependencies are inferred from the claim text.

Facts

Application: 13/377,192Filed 3 Jun 2010
Priority: JP 2009-13955710 Jun 2009
Published: US 2012/0081912 A15 Apr 2012
Granted: 8 Jul 2014
Term ends: Not estimatedThe source records don’t support an estimate.

Classification11 codes

F21V 29/70
Cooling arrangements: characterised by passive heat-dissipating elements, e.g. heat-sinks
F21S 8/026
Of recess-mounted type, e.g. downlighters: intended to be recessed in a ceiling or like overhead structure, e.g. suspended ceiling
F21V 21/04
Wall, ceiling, or floor bases; Fixing pendants or arms to the bases: recessed bases
F21V 29/507
Characterised by the adaptation for cooling of specific components: of means for protecting lighting devices from damage, e.g. housings

Family

US 2012/0081912 A1Pre-grant publication · published 5 Apr 2012
US 8,770,781 B2This patent

From the US filing history. Foreign family members aren’t listed.

Timeline

Citations

Open elsewhere

Building an agent or pulling many patents? Use the API or MCP server instead of scraping pages. Get an API key