JP2013171778A - Vehicle lamp - Google Patents

Abstract

To provide a vehicular lamp capable of realizing three-dimensional light emission that gives a sense of depth.
A direction indication or the like configured by housing a substrate 8 on which LEDs 6 and 7 as light sources are mounted in a lamp chamber 5 defined by a housing 3 and an outer lens 4 covering the opening of the housing 3. In the vehicular lamp 1, the LEDs 6 and 7 are mounted on the front surface and the back surface of the substrate 8, respectively, and the inner surface of the housing 3 is reflected to reflect the light L 2 from the LED 7 mounted on the back surface of the substrate 8. Let it be surface 3a. Further, the inner lens 9 is accommodated in the lamp chamber 4, and the light L1 from the LED 6 mounted on the surface of the substrate 8 is passed through the inner lens 9 to control the light distribution.
[Selection] Figure 2

Description

  The present invention relates to a vehicular lamp that uses an LED mounted on a substrate as a light source.

  For example, a bulb such as an incandescent lamp has been exclusively used as a light source of a direction indicator lamp provided in a motorcycle (see, for example, Patent Documents 1 to 3).

  On the other hand, in recent years, a vehicular lamp using an LED having excellent power saving and durability as a light source is increasing. An example is shown in FIGS.

  4 is a front view of a conventional vehicular lamp, FIG. 5 is a cross-sectional view taken along the line BB of FIG. 4, and the vehicular lamp 101 is a direction indicator lamp for a motorcycle. It is attached to a motorcycle (not shown) of the motorcycle. The direction indicator lamp 101 includes a substrate 108 in which a plurality of LEDs 106 are mounted on a surface in a lamp chamber 105 defined by a housing 103 and an outer lens 104 covering an opening of the housing 103, and the substrate 108 and its surface. An inner lens 109 that covers the LED 106 mounted on the housing is accommodated.

  The substrate 108 is attached to the housing 103 with screws 110, and the light transmission portion of the inner lens 109 is formed in parallel with the substrate 108 for light distribution control.

  Thus, when current is supplied to the plurality of LEDs 106 through the substrate 108, each LED 106 is activated to emit light, and the light distribution is controlled by passing through the inner lens 109, and then the outer lens 104. Is emitted toward the left in FIG.

Japanese Utility Model Publication No. 1-202162 Japanese Utility Model Publication No. 1-032626 No. 2-011265

  However, in the conventional turn signal lamp 101 shown in FIGS. 4 and 5, since only the inner lens 109 that emits light parallel to the substrate 108 emits light when it is turned on, it emits a flat light and has a monotonous impression that does not feel the depth. It was to give.

  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 realize three-dimensional light emission with a high texture that gives a feeling of depth.

  In order to achieve the above object, the invention described in claim 1 is configured by accommodating a substrate on which an LED as a light source is mounted in a lamp chamber defined by a housing and an outer lens covering the opening. In the vehicular lamp, the LEDs are mounted on the front surface and the back surface of the substrate, respectively, and the inner surface of the housing is a reflective surface that reflects light from the LEDs mounted on the back surface of the substrate. .

  According to a second aspect of the present invention, in the first aspect of the invention, an inner lens is accommodated in the lamp chamber, and light from an LED mounted on the surface of the substrate is passed through the inner lens to distribute the light. It is characterized by being configured to control.

  According to the present invention, the LEDs are mounted on the front surface and the back surface of the substrate, respectively, and the inner surface of the housing is a reflective surface that reflects the light from the LED mounted on the back surface of the substrate. It is possible to realize light emission with a high texture that makes you feel the depth.

It is a front view of the vehicle lamp which concerns on Embodiment 1 of this invention. It is the sectional view on the AA line of FIG. It is a bottom sectional view of the vehicular lamp according to the second embodiment of the present invention (corresponding to the sectional view taken along the line AA in FIG. 1). It is a front view of the conventional vehicle lamp. It is the BB sectional view taken on the line of FIG.

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

<Embodiment 1>
1 is a front view of a vehicular lamp according to Embodiment 1 of the present invention, FIG. 2 is a cross-sectional view taken along line AA of FIG. 1, and the illustrated vehicular lamp 1 is a direction indicator lamp for a motorcycle. The support stay 2 is attached to a vehicle body (not shown) of the motorcycle. This direction indicator lamp 1 includes a substrate 8 formed by mounting a plurality of LEDs 6 and 7 on the front and back surfaces in a lamp chamber 5 defined by a housing 3 and a transparent outer lens 4 covering the opening thereof, An inner lens 9 that covers the substrate 8 and the LEDs 6 mounted on the surface of the substrate 8 is accommodated.

  The substrate 8 is attached to the housing 3 with screws 10, and the light transmission part of the inner lens 9 is formed in parallel with the substrate 8 for light distribution control. The lens cut is given.

  By the way, in the direction indicator lamp 1 according to the present embodiment, a plurality of LEDs 6 and 7 are mounted on the front surface and the back surface of the substrate 8 as described above, but the LED 7 mounted on the back surface of the substrate 8 is mounted on the LED 7. The inner surfaces of the housings 3 that face each other constitute a reflective surface 3a, and the reflective surface 3a is subjected to a reflection process such as aluminum vapor deposition.

  Further, in the direction indicator lamp 1 according to the present embodiment, as shown in FIG. 2, a power cord 11 extending from a power battery (not shown) penetrates the grommet 12 inside the hollow support stay 2. The plug 13 connected to the end of the plug 13 is inserted into a connector portion 3 b formed integrally with the back surface of the housing 3 and connected to the terminal 14. One end of the terminal 14 extends into the lamp chamber 5 and is electrically connected to the substrate 8. Accordingly, the plurality of LEDs 6 and 7 mounted on the front surface and the back surface of the substrate 8 are connected to the substrate 8. The terminal 14 and the power cord 11 are electrically connected to a power battery (not shown).

  Thus, when a current is supplied from a power source battery (not shown) to the plurality of LEDs 6 and 7 mounted on the front and back surfaces of the substrate 8 through the power cord 11, the electrode 14 and the substrate 8, these LEDs 6 and 7 are respectively supplied. Is activated and emits light. As shown in FIG. 2, the light L1 emitted upward from the plurality of LEDs 6 mounted on the surface of the substrate 8 in FIG. 2 passes through the inner lens 9 and the inner surface of the inner lens 9 and the inner lens 9. After being controlled to parallel light and diffused light by a lens cut applied to the outer surface, the light passes through the outer lens 4 and is emitted upward in FIG.

  Also, light L2 emitted downward from FIG. 2 from the plurality of LEDs 7 mounted on the back surface of the substrate 8 is reflected by the reflecting surface 3a formed on the inner surface of the housing 3 and is converted into parallel light on the outer lens 4 side (see FIG. 2), passes through the outer lens 4, and exits upward in FIG. 2.

  Therefore, in the direction indicator lamp 1 according to the present embodiment, the inner lens 9 and the reflective surface 3a of the housing 3 that are separated from each other serve as a light emitting portion, and a difference in the front and rear is generated in the light emitting portion. Light emission can be realized.

<Embodiment 2>
Next, Embodiment 2 of the present invention will be described below with reference to FIG.

  3 is a bottom sectional view of the vehicular lamp according to the second embodiment of the present invention (corresponding to a sectional view taken along line AA in FIG. 1). In FIG. 3, the same elements as those shown in FIG. The same reference numerals are given, and repetitive description thereof will be omitted below.

  The vehicular lamp 1 ′ according to the present embodiment is also a direction indicator lamp for a motorcycle, and the difference from the direction indicator lamp 1 ′ according to the first embodiment is that the inner lens 9 in the first embodiment is omitted. The lens cut for light distribution control is applied to the inner surface of the outer lens 4, and the other configuration is the same as that of the direction indicator lamp 1 according to the first embodiment.

  Thus, also in the direction indicator lamp 1 ′ according to the present embodiment, a plurality of LEDs 6, 7 mounted on the front surface and the back surface of the substrate 8 from a power supply battery (not shown) through the power cord 11, the electrode 14 and the substrate 8. When a current is supplied to, these LEDs 6 and 7 are activated to emit light. As shown in FIG. 3, the light L <b> 1 emitted upward from the plurality of LEDs 6 mounted on the surface of the substrate 8 in FIG. 2 is applied to the inner surface of the outer lens 4 when passing through the outer lens 4. Light distribution is controlled by the lens cut, and the light is emitted as parallel light at the center of the outer lens 4 and as diffused light at the periphery and side surfaces of the outer lens 4 toward the upper side in FIG.

  Also, the light L2 emitted downward from FIG. 3 from the plurality of LEDs 7 mounted on the back surface of the substrate 8 is reflected by the reflecting surface 3a formed on the inner surface of the housing 3 and is converted into parallel light on the outer lens 4 side (see FIG. 3), passes through the outer lens 4, and exits upward in FIG. 3.

  Therefore, in the direction indicator lamp 1 ′ according to the present embodiment, the outer lens 4 and the reflecting surface 3a of the housing 3 which are separated from each other serve as a light-emitting portion, and a difference in the front-and-back is generated in the light-emitting portion. Light emission can be realized.

  Although the present invention has been described with respect to a mode in which the present invention is applied to a direction indicator lamp for a motorcycle, the present invention can be similarly applied to any other vehicular lamp using an LED as a light source. Of course there is.

1,1 'Direction indicator lamp (vehicle lamp)
2 Support stay 3 Housing 3a Reflecting surface of housing 3b Connector portion of housing 4 Outer lens 5 Lamp chamber 6, 7 LED
8 Substrate 9 Inner lens 10 Screw 11 Power cord 12 Grommet 13 Plug 14 Terminal L1, L2 Light

Claims (2)

In a vehicular lamp configured to accommodate a substrate formed by mounting an LED as a light source in a lamp chamber defined by a housing and an outer lens covering the opening,
A vehicular lamp characterized in that the LED is mounted on the front surface and the back surface of the substrate, respectively, and the inner surface of the housing is a reflective surface that reflects light from the LED mounted on the back surface of the substrate. The vehicle according to claim 1, wherein an inner lens is accommodated in the lamp chamber, and light distribution from an LED mounted on a surface of the substrate is controlled to pass through the inner lens. Lamps.

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