Lamp
A light guide and light plane technology, applied in the field of lamps, can solve the problems of reducing light utilization efficiency, reducing light utilization efficiency, and being unable to design the light emission area of the light guide element, etc.
Inactive Publication Date: 2010-03-03
KOITO MFG CO LTD
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Problems solved by technology
In this area, since the LED element is usually covered so as to be hidden by the extension so as not to be exposed to the outside, the light that is allowed to illuminate the light guide element in the area where the light guide element is covered so as to be hidden by the extension blocked, whereby the light in this area becomes inefficient, thereby reducing the light utilization efficiency
In addition, when trying to design the lamp such that the second light source is placed behind the light guide member, and the light emitted by the second light source passes through the light guide member to be output to the front of the lamp, a part of the light guide member is covered so as to be When the extension is hidden, the light emission area of the second light source is also limited by the extension, and the light utilization efficiency of the light emitted in the second light source is thus reduced
Therefore, when limiting the light emission area of the light guide element, the light emission area of the second light source needs to be considered, and it is difficult to arbitrarily design the light emission area of the light guide element
In particular, it is not possible to design the light emitting area of the light guiding element with smaller openings in the wall extensions
Method used
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[0045] An exemplary embodiment of the present invention will be described. figure 1 Is a front view of an exemplary embodiment in which the present invention is applied to the right-hand tail combination light TCL of a motor vehicle, figure 2 Is along figure 1 The vertical cross section taken on the line II-II, image 3 Is along figure 1 Horizontal cross-section taken on line III-III. In these figures, the lamp housing is defined by a lamp main body 11 and a transparent front cover 12, which is mounted to the right-hand side of the rear of the motor vehicle body and formed into a container shape, and the main body is on its front side (the motor vehicle The rear side) is open, and the front cover is attached to the front opening of the lamp body 11. The front cover 12 is formed in a shape that is inclined backward at its upper part by matching the bulge shape of the vehicle body and bending in the transverse direction, and the way is to conform to the lateral surface of the veh...
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A lamp is provided with a light guiding element (21) and light sources (26). The light guiding element (21) includes: light incident planes (22i); reflecting plane portions (28); and light sources (26) for respectively emitting light to the light incident planes (22i). Light entered from the light incident planes (22i) into an interior of the light guiding element (21) is reflected on the reflecting plane portions (28) towards a front of the lamp for output. The light sources (26) respectively emit light to the light incident planes (22i). The light guiding element (21) is configured by a combination of a plurality of light guiding plane portions (22) which guide the light that has entered from the light incident planes (22i) towards the front of the lamp at different inclined angles.
Description
Technical field [0001] The present invention relates to a lamp including a light guide element, and more particularly to a lamp, which not only enhances lamp utilization efficiency and lamp output efficiency when the light guide element and a light source are in an illuminated state, but also enhances the lamp when it is illuminated The design-related effects. Background technique [0002] In the automobile lamp, a lamp using a light guide element is provided as a structure for enhancing the design-related effect of the lamp. For example, Patent Document 1 discloses a lamp in which a stepped reflective flat portion is formed at the back side of the light guide element so that it is allowed to enter the light guide element from the lower surface of the light guide element to be guided through the light guide element. The light of the light element is reflected toward the front of the lamp on the reflection plane portion. In this lamp, an illumination method in which the reflecti...
Claims
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IPC IPC(8): F21S2/00F21V8/00F21V7/00
Inventor 平野旬一望月美希夏目和典六角屋裕之
Owner KOITO MFG CO LTD