JP2013175334A - Vehicle lamp - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a vehicle lamp that does not dazzle a person who looks at the lamp and prevents glare, while securing necessary visibility of a driver as a lamp.SOLUTION: A DRL light source unit 10 is arranged on the side of a front face of a lower part in a lamp chamber 4 formed by a housing 3 opened toward the front, and an outer lens 2 for covering an opening of the housing 3, and has an LED lamp 13 and a reflector 14. A tongue section 14d protruding toward an inner peripheral side of an opening 14a so as to be located on a diagonal line L for connecting a front end of a roof 14c and an LED 11 of the LED lamp 13, is formed on a front end of the opening 14a arranged on a bottom face 14b of the reflector 14.

Description

  The present invention relates to a vehicular lamp, and is particularly suitable for a vehicular lamp using a light emitting element such as an LED as a light source.

  In recent years, with the increase in luminance of light emitting elements, in particular, light emitting diodes (LEDs), the range of utilization of LED lamps that use the LEDs as light sources is rapidly expanding. This LED lamp has advantages such as small size, low power consumption, and long life as compared with other light sources such as halogen lamps and HID lamps (High Intensity Discharge lamps). For this reason, the LED lamp having such advantages is used as a light source of a vehicle lamp, for example, a vehicle width lamp (position lamp), a direction indicator lamp (blinker lamp), a high-mount stop lamp, a tail lamp (not only a tail lamp, but a brake lamp・ Includes rear combination lamps with integrated back lamps and direction indicators, etc.), headlamps, auxiliary headlamps (fog lamps), or DRL (Daytime Running Lights) Widely applied to various vehicle lamps.

  For example, Patent Documents 1 and 2 propose a vehicular lamp in which this type of LED lamp is applied as a DRL. Specifically, for example, as illustrated in FIG. 5, the vehicular lamp 100 includes a housing (not shown) that opens toward the front and a lens (outer lens 110) that covers the front opening of the housing. A light source unit having an LED lamp 130 as a light source and a reflector 140 for reflecting and diffusing light emitted from the LED lamp 130 in a desired direction is provided below the interior of the lamp chamber 120 formed. ing. An extension 150 is provided between the outer lens 110 and the reflector 140 so as to extend to the front end side of the reflector 140 located behind the outer lens 110 and to partition the lamp chamber 120. Here, “front” means the traveling direction of light emitted from the vehicular lamp (refer to the arrows indicating the up and down directions in the figure).

  The LED lamp 130 is configured by mounting an LED 131 as a light source on a substrate 132 such as a flexible printed circuit board (FPC), and the substrate 132 on which the LED 131 is mounted faces the reflector 140 with the LED 131 facing upward. It is mounted in the lamp chamber 120 by being disposed below the lamp. In the bottom surface portion 140a of the reflector 140, an opening 140b for exposing the front of the LED 131 (that is, the traveling direction of the light emitted from the LED 131) at a position corresponding to the lower LED lamp 130 has a circular shape or the like. It has been drilled.

  Therefore, in the vehicular lamp 100, after the light emitted from the LED 131 is reflected by the inner surface of the dome-shaped roof portion 140c that is curved and extended toward the upper side of the reflector 140 through the opening 140b, the predetermined amount is obtained. It is made to radiate | emit toward the direction (namely, housing front). At this time, the vehicle lamp 100 employs a configuration in which a plurality of LEDs 131 are mounted on a substrate 132 in order to provide a plurality of LED lamps 130 in order to obtain a light quantity required for this type of lamp.

JP 2010-267468 A JP 2011-28906 A

  However, in the vehicular lamp 100 having such a configuration, the amount of light required for this type of lamp, that is, the visibility necessary for the lamp is secured, but when the vehicular lamp 100 is viewed from the front side, 6, an end 140 d on the front side of the opening 140 b provided in the bottom surface 140 a of the reflector 140 is positioned on a diagonal L connecting the front end of the roof 140 c and the LED 131 of the LED lamp 130. Since the LED 131 of the LED lamp 130 is exposed so that it is not directly visible, the light emitted from the LED lamp 130 is glare as a glare, that is, a driver or occupant of an oncoming vehicle or a preceding vehicle, There has been a problem of dazzling and dazzling pedestrians.

  Therefore, the present invention has been made in view of the above-described problems, and provides a vehicular lamp that can prevent dazzling without giving a viewer a dazzling feeling while ensuring the necessary visibility as a lamp. Objective.

In order to solve the above-mentioned problem, the invention described in claim 1
A light chamber defined by a housing that opens toward the front and a lens that covers the front opening of the housing; a light emitting element on the front side of the interior of the lamp chamber; A light source lamp disposed with the light emitting element facing upward, and disposed above the light source lamp and emitted from the light source lamp due to light emission of the light emitting element. The vehicle lamp is provided with a light source unit that includes a reflector that reflects the diffused light and diffuses the light toward the front of the housing, and is configured to irradiate the light of the light source unit toward the front of the housing In
The reflector is
A bottom surface portion facing the light source lamp disposed below and having an opening for exposing the light source lamp at a portion corresponding to the light source lamp;
A dome-shaped roof portion that extends upward from the bottom surface portion, reflects light emitted from the light source lamp, and diffuses the light toward the front of the housing;
A tongue protruding toward the inner peripheral side of the opening so as to be positioned on a diagonal line connecting the front end of the roof and the light emitting element of the light source lamp at the front end of the opening A portion is formed.

The invention according to claim 2 is the vehicle lamp according to claim 1,
A plurality of the light source units are provided, and each of the light source units is
A plurality of the light source lamps configured by mounting a plurality of the light emitting elements on the substrate;
A plurality of the reflectors each having a plurality of the opening portions each having the tongue portion and a plurality of the roof portions corresponding to the plurality of light emitting elements,
It is characterized by providing.

  According to the present invention, the front end of the opening formed in the bottom surface of the reflector in the light source unit is positioned on a diagonal line connecting the front end of the roof and the light emitting element of the light source lamp. Since the tongue projecting toward the inner peripheral side of the opening is formed, even when viewed from the front side while ensuring the necessary visibility as a lamp, the front end of the reflector opening Since the provided tongue can avoid exposing the light emitting element of the light source lamp to a state where it can be directly viewed, the light emitted from the light source lamp is seen as glare as a glare (that is, a driver of an oncoming vehicle or a preceding vehicle, It is possible to prevent the passengers or pedestrians from being dazzled without giving a feeling of dazzling.

It is a schematic front view which shows the vehicle lamp which concerns on one Embodiment of this invention. It is a schematic sectional drawing which shows the cross section in the vehicle lamp of FIG. It is a disassembled perspective view which shows the principal part in the vehicle lamp of FIG. It is a fragmentary perspective view which expands and shows the principal part of FIG. It is a schematic sectional drawing with which it uses for description of the conventional vehicle lamp. It is a fragmentary perspective view which expands and shows the principal part of FIG.

  Hereinafter, an embodiment of a vehicular lamp according to the present invention will be described with reference to the drawings.

  FIG. 1 is a schematic front view showing a vehicular lamp according to an embodiment of the present invention, FIG. 2 is a schematic cross-sectional view showing a cross section of the vehicular lamp of FIG. 1, and FIG. FIG. 4 is an exploded perspective view showing a main part of the vehicular lamp, and FIG. 4 is an enlarged partial perspective view showing the main part of FIG. In the following description, “front” means the direction in which light emitted from the vehicular lamp travels.

  As shown in FIG. 1, the vehicular lamp 1 according to the present embodiment is a front combination lamp in which a plurality of light source units are disposed in a lamp chamber 4 defined by an outer lens 2 and a housing 3. As the light source unit, the multi-reflector type light source unit 5 for high beam (traveling beam), low beam (passing beam) in order from the traveling lane side in the vehicle width direction to the shoulder side (in the drawing, from the right side to the left side) Projector type light source unit (hereinafter referred to as low beam light source unit) 6, multi-reflector type light source unit 7 for vehicle width lamp (position lamp), and multi-reflector type light source unit 8 for direction indicator lamp (winker lamp) And. The outer lens 2 is made of a light-transmitting (translucent) material such as polycarbonate, and may be a cover through which light passes or may have a lens function.

  Further, in the vehicle lamp 1 of the present embodiment, the DRL that is the light source unit according to the present invention is located below these four light source units 5 to 8, that is, on the front side (outer lens 2 side) inside the lamp chamber 4. A multi-reflector type light source unit (hereinafter abbreviated as a DRL light source unit) 10 (10a) for (Daytime Running Lights) is disposed.

  Specifically, as shown in FIG. 2, in the vehicular lamp 1, the low beam light source unit 6 is disposed inside the lamp chamber 4 and below the low beam light source unit 6 (that is, the lamp chamber 4. A DRL light source unit 10 is disposed in the lower part of the interior.

  The low beam light source unit 6 includes an LED light source 20 using a light emitting element (in this embodiment, an LED) as a light source, a mount plate 21 on which the LED light source 20 is mounted, and an LED light source 20 connected to the mount plate 21. A reflector 22 having an enclosing reflecting surface and having an opening at one end, a projection lens 23 positioned in front of the opening of the reflector 22, and a lens holder 24 for supporting the projection lens 23 are provided, whereby a low beam ( A light distribution pattern for (passing beam) is formed. The structure of such a low beam light source unit 6 is the same as that of a conventional projector type light source unit. Here, the case where the low-beam light source unit 6 is a projector-type light source unit and the LED light source 20 is applied as the light source is described. However, the present invention is not limited to this, and the low-beam light source unit and the light source are as follows. In addition, for example, halogen bulbs, incandescent bulbs, high-intensity discharge lamps (HID (High Intensity Discharge) lamps called xenon lamps such as high-pressure mercury lamps, metal halide lamps, and high-pressure sodium lamps), other bulbs, and other light emitting elements ( Various light source units using light sources such as organic EL) can be widely applied.

  Here, the DRL light source unit 10 according to the present invention includes a light emitting element (LED (Light Emitting Diode) in this embodiment) 11 serving as a light source, and a flexible printed circuit board (FPC) on which the LED 11 is mounted. ) And the like, and the LED lamp 13 disposed in the lamp chamber 4 with the LED 11 facing upward, and the LED lamp 13 disposed above the LED lamp 13, and the LED 11 emitted from the LED 11 And a reflector 14 that reflects light emitted from the lamp 13 and diffuses it toward the front of the housing 3 (indicated by an arrow in the figure). Further, an extension 15 is provided between the outer lens 2 and the reflector 14 so as to extend to the front end side of the reflector 14 located behind the outer lens 2 and partition the lamp chamber 4. Here, “front” means the direction in which the light emitted from the DRL light source unit 10 travels (see the up and down arrows in the figure).

  The reflector 14 is opposed to the LED lamp 13 disposed below, and a bottom surface portion 14b in which an opening 14a for exposing the LED lamp 13 is formed at a portion corresponding to the LED lamp 13, and a bottom surface portion 14b. And a dome-shaped roof portion 14c for reflecting the light emitted from the LED lamp 13 and diffusing it toward the front of the housing 3. In addition, although the case where the bottom part 14b which has the opening part 14a, and the roof part 14c are integrally formed here is described here, this invention is not limited to this, For example, as shown in FIG. The bottom surface portion 14b having the opening portion 14a and the roof portion 14c may be separated and fastened and fixed by a fixing member (fastening member) such as a screw 30.

  In the case of the present embodiment, the DRL light source unit 10 faces from the traveling lane side in the vehicle width direction to the road shoulder side (from the right side to the left side indicated by the arrow in the figure) as shown in FIGS. A plurality of DRL light source units 10a, 10a... 10a (in this embodiment, the number is 12 but is not limited to this). That is, each of the DRL light source units 10a, 10a,... 10a includes an LED lamp 13 and a reflector 14. As a whole, the LED lamp 13 is placed on the board 12, from the traveling lane side in the vehicle width direction to the shoulder side. A plurality of (in this case, 12) LEDs 11 are mounted and the reflector 14 is configured to have a plurality of openings 14 a and a roof 14 c corresponding to the plurality of LEDs 11 in the LED lamp 13. .

  At this time, as shown in FIG. 4, the opening portion 14a is formed in a substantially circular shape with respect to the bottom surface portion 14b of the reflector 14, and the front end portion of the roof portion 14c at the front end portion. A tongue portion 14d positioned on a diagonal line L connecting the LED 11 and the LED 11 of the LED lamp 13 is formed so as to protrude toward the inner peripheral side of the opening portion 14a. Therefore, the LED lamp 13 (LED 11) is covered by the tongue 14d when viewed from the front side in the opening 14a. Therefore, even when the vehicular lamp 1 is viewed from the front, the LED lamp 13 (LED 11). Cannot be seen directly.

  In addition, the reflector 14 may be made to function as a planar reflecting surface and a multi-reflecting surface, respectively, by performing a metallic-like glittering process by chrome plating or the like on at least the bottom surface portion 14b or the inner surface side of the roof portion 14c. In this case, when the DRL light source unit 10 is viewed through the outer lens 2, the bottom surface portion 14 b of the reflector 14 and the inner surface side of the roof portion 14 c, both of which have been subjected to a metallic-like glittering process, are visually recognized and have a high-class feeling. It can have the advantage that an atmosphere excellent in design property can be felt.

  Further, the bottom surface portion 14 b of the reflector 14, the inner surface side of the roof portion 14 c, and the region surrounded by the extension 15 become an optical path forming region where the light emitted from the LED lamp 13 (LED 11) reaches the outer lens 2. The light guided through this optical path forming region is irradiated to the outside through the outer lens 2.

  As described above, the present embodiment has the lamp chamber 4 defined by the housing 3 that opens toward the front and the outer lens 2 that covers the front opening of the housing 3. The LED 11 has a LED 11 and a board 12 on which the LED 11 is mounted on the front side, the LED lamp 13 is disposed with the LED 11 facing upward, and the LED 11 is disposed above the LED lamp 13. A DRL light source unit 10 including a reflector 14 that reflects and diffuses light emitted from the LED lamp 13 toward the front of the housing 3, and is emitted from the DRL light source unit 10. In the vehicular lamp 1 configured to irradiate the light to the front of the housing 3, the reflector 14 has an L disposed below. A bottom surface portion 14b facing the D lamp 13 and having an opening portion 14a for exposing the LED lamp 13 at a portion corresponding to the LED lamp 13, and extending upward from the bottom surface portion 14b. A dome-shaped roof portion 14c for reflecting and diffusing the light emitted from the LED lamp 13 toward the front of the housing 3, and at the end on the front side of the opening 14a, the roof portion 14c A tongue portion 14d that protrudes toward the inner peripheral side of the opening portion 14a is formed so as to be positioned on a diagonal line L that connects the front end portion and the LED 11 of the LED lamp 13.

  Therefore, according to the vehicular lamp 1 of the present embodiment, the front end portion of the roof portion 14c and the LED are connected to the front end portion of the opening portion 14a formed in the bottom surface portion 14b of the reflector 14 in the DRL light source unit 10. Since the tongue portion 14d that protrudes toward the inner peripheral side of the opening portion 14a is formed so as to be positioned on the diagonal line L that connects the LED 11 of the lamp 13, the front surface while ensuring the necessary visibility as a lamp. Even when viewed from the side, it is possible to avoid exposing the LED 11 of the LED lamp 13 to a state in which the LED 11 can be directly viewed by the tongue 14 d provided in the opening 14 a of the reflector 14. For this reason, the light emitted from the LED lamp 13 is prevented from being dazzled as glare without giving a dazzling feeling to a viewer (that is, a driver, an occupant, or a pedestrian of an oncoming vehicle or a preceding vehicle). be able to. Thus, it is possible to realize the vehicular lamp 1 that can prevent dazzling without giving the viewer a dazzling feeling while ensuring the visibility required for the lamp.

  In addition, according to the vehicular lamp 1 of the present embodiment, a plurality of DRL light source units 10a are provided, and each DRL light source unit 10a includes a plurality of LEDs 11 mounted on the substrate 12. 13 and a plurality of reflectors 14 each having a plurality of openings 14a each having a tongue portion 14d and a plurality of roof portions 14c corresponding to the plurality of LEDs 11, and is required in this type of lamp. Therefore, it is possible to more reliably retain the necessary light quantity, that is, the visibility required as a lamp.

  The embodiments to which the present invention can be applied are not limited to the above-described embodiments, and can be appropriately changed without departing from the spirit of the present invention.

  For example, in the above-described embodiment, the case where the opening portion 14a of the bottom surface portion 14b of the reflector 14 is formed in a substantially circular shape as a whole has been described. However, the present invention is not limited thereto, In a state where the portion 14a protrudes toward the inner peripheral side of the opening portion 14a, the tongue portion 14d located on the diagonal L connecting the front end portion of the roof portion 14c and the LED 11 of the LED lamp 13 to the front end portion. As long as it is formed, various shapes such as an elliptical shape, a rectangular shape, and other polygonal shapes can be widely applied as the shape of the opening 14a.

  In the above-described embodiment, the case where the LED lamp 13 is applied to the DRL light source unit 10 as the vehicular lamp 1 is described as being applied to a front combination lamp. However, the present invention is not limited to this, and the vehicular lamp. In addition to this, for example, vehicle width lamp (position lamp), direction indicator lamp (winker lamp), high mount stop lamp, tail lamp (not only tail lamp but also brake lamp, back lamp, direction indicator lamp, etc. are integrated. The present invention can be widely applied to various vehicle lamps such as a rear combination lamp, a headlamp, and an auxiliary headlamp (fog lamp).

1 ... Vehicle lamp 2 ... Outer lens (lens)
3 ... Housing 4 ... Light chamber 10, 10a ... DRL light source unit (light source unit)
11 ... LED (light emitting element)
12 ... Substrate 13 ... LED lamp (light source lamp)
14 ... Reflector 14a ... Opening 14b ... Bottom 14c ... Roof 14d ... Tongue 15 ... Extension L ... Diagonal

Claims (2)

A light chamber defined by a housing that opens toward the front and a lens that covers the front opening of the housing; a light emitting element on the front side of the interior of the lamp chamber; A light source lamp disposed with the light emitting element facing upward, and disposed above the light source lamp and emitted from the light source lamp due to light emission of the light emitting element. The vehicle lamp is provided with a light source unit that includes a reflector that reflects the diffused light and diffuses the light toward the front of the housing, and is configured to irradiate the light of the light source unit toward the front of the housing In
The reflector is
A bottom surface portion facing the light source lamp disposed below and having an opening for exposing the light source lamp at a portion corresponding to the light source lamp;
A dome-shaped roof portion that extends upward from the bottom surface portion, reflects light emitted from the light source lamp, and diffuses the light toward the front of the housing;
A tongue protruding toward the inner peripheral side of the opening so as to be positioned on a diagonal line connecting the front end of the roof and the light emitting element of the light source lamp at the front end of the opening A vehicular lamp characterized in that a portion is formed. A plurality of the light source units are provided, and each of the light source units is
A plurality of the light source lamps configured by mounting a plurality of the light emitting elements on the substrate;
A plurality of the reflectors each having a plurality of the opening portions each having the tongue portion and a plurality of the roof portions corresponding to the plurality of light emitting elements,
The vehicular lamp according to claim 1, comprising:

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