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Illuminating unit

A lighting unit and substrate technology, applied in lighting applications, household lighting, lighting devices, etc., can solve the problems of unsuitable lighting applications, narrow lighting range of lighting units, etc., and achieve the effect of high illuminance

Active Publication Date: 2010-09-01
NICHIA CORP
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

[0004] However, since the above-mentioned lighting unit has a narrow irradiation range, it is not suitable for lighting applications that uniformly irradiate light over a wide range.

Method used

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Experimental program
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Effect test

Embodiment approach 1

[0035] Figure 1A It is a schematic perspective view seen from the top side, Figure 1B is a schematic cross-sectional view of the substrate width direction, as in the Figure 1A , 1B As shown, the lighting unit 10 of this embodiment is mainly composed of a long substrate 11, a plurality of semiconductor light sources 12 arranged in a row along the length direction on the substrate, and a light source arranged along one long side of the substrate. The light reflector 13 is constituted.

[0036] The substrate 11 is formed in a shape extending in the longitudinal direction, and a plurality of semiconductor light sources 12 are arranged in a row on the upper surface side of the substrate 11 in the longitudinal direction. The substrate 11 is a substrate implemented by a known method in this field. The substrate 11 has wiring and a wiring pattern for making the semiconductor light source 12 emit light on the upper surface and the bottom surface facing the upper surface, and variou...

Embodiment approach 2

[0047] The lighting unit 20 of the second embodiment is as figure 2 As shown, the multilayer reflector 23a is divided among the plurality of semiconductor light sources 22, and the side reflector 23b is provided in the divided part, and its structure is substantially the same as that of the first embodiment.

[0048]In this embodiment, a plurality of multilayer reflectors 23a and a plurality of semiconductor light sources 22 are arranged in pairs. Thereby, the light from each semiconductor light source 22 can be efficiently extracted to the outside by the multilayer reflector 23a, and the utilization efficiency of light can be improved. Moreover, the light reflection body of this embodiment has the side reflector 23b which protrudes between each semiconductor light source 22 from between each multilayer reflector 23a. Thus, by using a side reflector protruding between the plurality of semiconductor light sources, non-utilized light directed in the longitudinal direction of t...

Embodiment approach 3

[0050] In the lighting device 100 according to Embodiment 3, two sets of lighting units 30 are arranged in the longitudinal direction of the substrate 31 and held in one casing 101. The lighting unit 30 has a metal plate 34, a substrate 31 on which a semiconductor light source 32 is mounted, Light reflector 33 .

[0051] The metal plate 34 is made of, for example, a metal material with high thermal conductivity such as aluminum, copper, iron, or stainless steel. In addition, the shape of the metal plate is not limited to a plate shape, but a heat sink shape with fins added thereto, or a shape that becomes a part of the structural configuration of the case may be added.

[0052] In Embodiment 3, the same devices as in Embodiments 1 and 2 can be used for the semiconductor light source 32 and the substrate 31 on which the light source is mounted. The light reflector has substantially the same structure as the light reflector used in Embodiment 2 except that the back surface has ...

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Abstract

Provided is an illuminating unit which can uniformly irradiate a wide range with light. The illuminating unit is provided with a long substrate, a plurality of semiconductor light sources arranged in a row in the longitudinal direction on the substrate, and a light reflecting body arranged along one long side on the substrate. The light reflecting body has a multi-reflector wherein a plurality ofsmall pieces are synthesized. Especially the arrangement angles of the small pieces are adjusted so that light from the semiconductor light sources can be extracted as reflection light having different optical axes. The small pieces arranged further from the semiconductor light sources preferably have larger areas and longer focal distances.

Description

technical field [0001] The present invention relates to a lighting unit using a semiconductor light source, and more particularly to a lighting unit in which a plurality of semiconductor light sources are mounted in a line. Background technique [0002] In recent years, linear lighting units using semiconductor light sources such as light emitting diodes have been proposed as lighting units that are variations of fluorescent lamps. For example, a lighting unit is disclosed which includes a plurality of LED chips mounted along the longitudinal direction of a substrate, and a substantially semi-cylindrical LED chip that integrally covers the entirety of the LED chips for the purpose of increasing the luminous flux of light. Or a semi-circular transparent resin part. [0003] [Patent Document 1] JP Unexamined Publication No. 2002-299697 [0004] However, since the above-mentioned lighting unit has a narrow irradiation range, it is not suitable for lighting applications that u...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): F21V7/00F21V3/00F21V7/09F21V19/00H01L33/00F21Y101/02H01L33/60
CPCH01L25/0753F21W2131/405F21W2131/305F21V3/04F21V7/09F21V7/0008F21Y2103/003F21Y2101/02H01L33/60F21V7/005F21Y2103/10F21Y2115/10H01L2924/0002H01L2924/00
Inventor 宫入洋
Owner NICHIA CORP
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