JP5738701B2 - Vehicle lighting - Google Patents

Description

  The present invention relates to a vehicular lamp such as a position lamp that efficiently illuminates a long inner lens by using twice reflection of light emitted from a light source.

  For example, a headlamp for a motorcycle is often used in combination with a main lamp for illumination and a signal lamp such as a position lamp and a turn signal lamp. As a light source, an LED (light emitting diode) is being used instead of a conventional incandescent bulb or the like (see, for example, Patent Documents 1 and 2).

  By the way, the position lamp includes at least one light source, a reflector that reflects light emitted from the light source, and an inner lens that transmits light reflected by the reflector. Long ones may be used. When such a long inner lens is used, it is necessary to form a multi-focus reflecting surface on the reflector in order to efficiently shine the long inner lens including both ends with a small number of light sources.

JP 2008-226739 A JP 2010-267468 A

  However, when a multi-focus reflective surface is formed on the reflector in order to efficiently shine a long inner lens with a small number of light sources, light does not enter the end of the reflector as the width of the reflector increases. There is a drawback that the part does not shine.

  The present invention has been made in view of the above problems, and an object of the present invention is to provide a vehicular lamp that can efficiently shine a long inner lens including its both ends with a small number of light sources. There is.

  To achieve the above object, the invention described in claim 1 comprises at least one light source, a reflector that reflects light emitted from the light source, and a long inner lens that transmits light reflected by the reflector. In the vehicular lamp, a central reflection region that guides light from the light source to the inner lens by a single reflection is formed around the optical axis of the light source of the reflector. A surface is formed in the vicinity of the central reflection region of the reflector, and a second reflection surface with the first reflection surface as a focal point is formed at a position away from the central reflection region of the reflector. The light is reflected by the first reflecting surface and the second reflecting surface and guided to the inner lens.

According to a second aspect of the invention of claim 1 Symbol placement, along with a pair formed on the left and right sides of the first and 2 wherein the reflector a reflecting surface provided a pair of left and right, the left and right ends of the second reflecting surface reflector It is characterized by being arranged in the section.

A third aspect of the invention is characterized in that, in the first or second aspect of the invention, the first and second reflecting surfaces of the reflector are multiple reflecting surfaces.

  According to the present invention, the light from the light source is reflected by the first reflecting surface of the reflector, is directed to the second reflecting surfaces at the left and right ends of the reflector, is reflected by the second reflecting surface, and is Since it passes in the direction and passes through the left and right end portions of the inner lens, it is possible to efficiently shine the long inner lens including the both end portions with a small number of light sources.

It is a fracture front view of the vehicular lamp concerning the present invention. It is a partial front view of the position lamp part of the vehicle lamp which concerns on this invention. It is a front view of the reflector of the vehicle lamp which concerns on this invention. It is a perspective view which shows one division | segmentation piece of the reflector divided into 3 of the vehicle lamp which concerns on this invention.

  Embodiments of the present invention will be described below with reference to the accompanying drawings.

  1 is a partial front view of a vehicular lamp according to the present invention, FIG. 2 is a partial front view of a position lamp and a portion of the vehicular lamp, FIG. 3 is a front view of a reflector of the vehicular lamp, and FIG. It is a perspective view which shows one division piece divided into three.

  A vehicle lamp 1 shown in FIG. 1 is the left one of headlamps arranged on the left and right of a front part of a motorcycle, and is a resin transparent outer lens that covers a resin housing 2 and a front opening thereof. 3, a main bulb 4 for illumination, a reflector 5 arranged around the main bulb 4, and position lamps 6 and 7 as signal lamps arranged below the main bulb 4 are accommodated in the lamp chamber defined by 3. Has been. The right headlamp 1 is configured symmetrically with the left one and the basic configuration is the same, so illustration and description thereof are omitted.

  As shown in FIG. 2, the position lamps 6 and 7 are attached to a resin extension 8 that covers the periphery of the position lamps 6, and a slender reflector 9 shown in FIG. .

  Here, the position lamp 6 is formed to be elongated along the lower shape of the housing 2 obliquely below the main bulb 4, and is a long inner lens 10 made of transparent resin that is screwed to the extension 8 from the back side. And LED11 (refer FIG. 4) which is a light source arrange | positioned at two places, and the said reflector 9 are comprised.

  The position lamp 7 is disposed beside the position lamp 6 obliquely below the main bulb 4, and is a parallelogram inner lens 12 made of a transparent resin screwed to the extension 8 from the back side thereof. The LED 9 (not shown) which is a light source disposed at one place and the reflector 9 are included.

  By the way, in the present embodiment, the reflector 9 is divided into three pieces 9-1, 9-2 and 9-3 as shown in FIG. 3, and one piece 9-1 is used for the position lamp 7. The other two divided pieces 9-2 and 9-3 are used for the position lamp 6. The inner surfaces (reflective surfaces) of the divided pieces 9-1, 9-2, and 9-3 of the reflector 9 are subjected to a reflection process such as aluminum vapor deposition or silver coating in order to increase the reflectance.

  Here, the configuration of one divided piece 9-2 used for the position lamp 6 among the three divided pieces 9-1, 9-2, 9-3 of the reflector 9 will be described below with reference to FIG. To do.

  As shown in FIG. 4, the light from the LED 11 is reflected once around the optical axis of one LED 11 arranged at the center in the width direction of the divided piece 9-2 of the reflector 9. Thus, a central reflection region 9A leading to the front inner lens 10 is formed. And the 1st reflective surface 9B which makes LED11 the focus is formed in the right and left of the center reflective area 9A of the division piece 9-2, respectively, and the 1st reflection surface 9B is formed in the right and left both ends of the division piece 9-2. A second reflecting surface 9C having the reflecting surface 9B as a focal point is formed. Here, the first reflective surface 9B is configured as a multiple reflective surface with the LED 11 as a focal point, and the second reflective surface 9C is configured as a multiple reflective surface with the first reflective surface 9B as a focal point, The optical axis direction (light reflection direction) of the first reflection surface 9B is set in the vehicle width direction, and the optical axis direction (light reflection direction) of the second reflection surface 9C is set in front of the vehicle. Since the other divided piece 9-3 used for the position lamp 6 is configured in the same manner as the divided piece 9-2, description thereof will be omitted.

  Thus, when the LED 11 emits light in the divided piece 9-2 of the reflector 9, a part of the light is reflected by the central reflection region 9A only once and guided to the inner lens 10, and is transmitted through the inner lens 10. And then exits to the front of the vehicle. Further, another part of the light emitted from the LED 11 is directed to the left and right first reflecting surfaces 9B as shown by arrows in FIG. 4 and reflected by the first reflecting surfaces 9B (first reflection). ) And the second reflection surface 9C on the opposite side in the left-right direction (the light reflected by the left first reflection surface 9B is the light reflected by the right second reflection surface 9C and the right first reflection surface 9B). Respectively proceeds in the vehicle width direction toward the second reflecting surface 9C on the left side, is reflected by the second reflecting surfaces 9C on the left and right (second reflection), and travels toward the inner lens 10 in front. The light passes through the lens 10 and is emitted forward of the vehicle.

  As described above, in the position lamp 6 according to the present embodiment, the light from the LED 11 is reflected by the first reflecting surface 9B of the divided piece 9-2 of the reflector 9, and the left and right of the divided piece 9-2 are reflected. To go to the second reflecting surface 9C at both ends, reflected by the second reflecting surface 9C and heading forward of the vehicle, and passing through the left and right ends of the region corresponding to the split piece 9-2 of the inner lens 10, The entire region including the left and right ends of the region can be illuminated substantially uniformly. Similarly, also in the other divided piece 9-3 of the reflector 9 used for the position lamp 6, the entire region including the left and right ends of the region corresponding to the divided piece 9-3 of the inner lens 10 can be illuminated substantially uniformly. .

  Therefore, according to the present embodiment, the long inner lens 10 including the both ends can be efficiently illuminated with the two LEDs 11 and the visibility of the position lamp 6 can be improved. can get.

  Although the present invention has been described with respect to a form in which the present invention is applied to a position lamp, the present invention is similarly applied to any other vehicle such as a tail lamp or a stop lamp having a long inner lens. Of course, it is possible. Moreover, although the above demonstrated the form which used LED as a light source, arbitrary things other than LED can be used as a light source.

1 Vehicle lamps (headlamps)
2 Housing 3 Outer lens 4 Main valve 5 Reflector 6, 7 Position lamp (vehicle lamp)
8 Extension 9 Reflector 9A Reflector Central Reflection Area 9B Reflector First Reflection Surface 9C Reflector Second Reflection Surface 10 Inner Lens 11 LED (Light Source)
12 Inner lens

Claims (3)

In a vehicle lamp comprising at least one light source, a reflector that reflects light emitted from the light source, and a long inner lens that transmits light reflected by the reflector,
A central reflection region is formed around the optical axis of the light source of the reflector to guide light from the light source to the inner lens by a single reflection, and a first reflective surface with the light source as a focal point is formed on the reflector. The second reflection surface having the first reflection surface as a focal point is formed at a position away from the center reflection region of the reflector, and the light from the light source is emitted from the light source. A vehicular lamp characterized in that the vehicular lamp is configured to be reflected by one reflecting surface and the second reflecting surface and guided to the inner lens. With a pair formed on the left and right of said reflector the first and second reflective surfaces disposed pair, for a vehicle according to claim 1 Symbol mounting, characterized in that the second reflecting surface is disposed at the left and right ends of the reflector Light fixture. The vehicular lamp according to claim 1 or 2, wherein the first and second reflecting surfaces of the reflector are multiple reflecting surfaces.

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