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lamps

A lamp and lamp body technology, which is applied in the direction of headlights, lighting and heating equipment, vehicle lighting systems, etc., can solve the problems of reduced light utilization efficiency, and achieve the effects of improving appearance, increasing light intensity, and improving light utilization efficiency

Active Publication Date: 2015-09-30
KOITO MFG CO LTD
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  • Summary
  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

Therefore, part of the light emitted from the peripheral area in front of the projection lens at a large diffusion angle is blocked by the annular flange portion of the lens holder, and the light utilization efficiency of the emitted light from the light source decreases due to this reason.

Method used

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Examples

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Embodiment Construction

[0073] Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings. In the following embodiments, although various limitations are made to constituent elements, types, combinations, shapes, relative arrangements, etc., these are merely examples, and the present invention is not intended to limited to this.

[0074] figure 1 shows a lamp 10 according to an embodiment of the present invention, figure 1 (a) is the front view, figure 1 (b) is a side view. figure 2 yes figure 1 The II-II line sectional view. image 3 (a) is figure 1 Section diagram of line IIIa-IIIa, image 3 (b) is figure 1 Line IIIb-IIIb sectional view.

[0075] As shown in these figures, the lamp 10 according to this embodiment is a lamp for illuminating the front while being mounted on a working vehicle such as a forklift.

[0076] This lamp 10 has a configuration including a projection lens 12 , a light source 14 arranged behind the projection lens ...

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PUM

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Abstract

A lamp includes a projection lens, a light source disposed behind the projection lens, a lens holder that holds the projection lens, and a lamp body that holds the lens holder while accommodating the light source. In particular, a front surface of the projection lens includes a central region configured by a convex curved surface and a peripheral region around the central region which is configured by an annular concave curved surface, the lens holder is formed in a cylindrical shape and an annular flange portion extending towards an inner peripheral side is formed at a front end of the lens holder, an annular step portion is formed at an outer peripheral edge of the peripheral region on the front surface of the projection lens, and the projection lens is fixed to the annular flange portion of the lens holder at a step surface of the annular step portion.

Description

technical field [0001] The invention relates to a luminaire provided with a projection lens. Background technique [0002] Conventionally, as a configuration of a lamp, a projection lens supported by a lens holder, a light source arranged behind the projection lens, and a lamp body supporting the lens holder in a state where the light source is housed are known. [0003] For example, it is described in Patent Document 1 that, in such a lamp, a convex meniscus lens having different vertical and horizontal curvatures is provided as a projection lens. [0004] In this case, the projection lens of the lamp described in Patent Document 1 is configured to be fixed to the lens holder on the rear surface of the outer peripheral portion and on the outer peripheral surface. [0005] [Patent Document 1] Japanese Unexamined Patent Publication No. 2007-335301 [0006] As a light distribution pattern formed by the irradiated light from a lamp equipped with a projection lens, in order to...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): F21S2/00F21V5/04F21V17/10
CPCF21V17/06F21V5/04F21S48/1216F21V14/06F21S48/1154F21S41/143F21S41/295
Inventor 稻叶彻明
Owner KOITO MFG CO LTD