JP2004227981A - Vehicular lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To solve the problem that in the conventional vehicular lamp using an LED as a light source, it was difficult to emit light in the lateral direction of the light source and that when the LED lamp is faced squarely, the high luminance portion becomes too conspicuous and design is degraded. <P>SOLUTION: The vehicular lamp 1 is constructed of an LED lamp 2 that is provided crossing the optical axis to the irradiation direction of the vehicular lamp and a reflecting face 3 for reflecting the emitted light from this LED lamp in the irradiation direction of the vehicular lamp 1, and the LED lamp and the reflecting face are combined by a holder 5 as a pair and a light projection unit 4 is constructed, and a plurality of light projection units are arranged along the three-dimensional face based on a desired design, and a light-emitting face is formed. Since a diffusion cut 5b which reflects the light toward outside of the vehicle is applied on the standing wall part 5c of the holder 5, it is not necessary to face the LED lamp squarely and light can be distributed to the side of the vehicle. <P>COPYRIGHT: (C)2004,JPO&NCIPI

Description

[0001]
TECHNICAL FIELD OF THE INVENTION
The present invention relates to a vehicular lamp such as a headlamp, a tail lamp, and a stop lamp, and more particularly, to a configuration of a vehicular lamp using an LED lamp as a light source.
[0002]
[Prior art]
Examples of the configuration of a conventional vehicle lamp using an LED lamp as a light source include an infrared-emitting LED lamp holding a light-emitting direction downward, and reflecting light from the LED lamp in an irradiation direction. For example, there is an LED lamp having a paraboloid of revolution whose focal point is a virtual light source position of the LED lamp and a reflective surface. (For example, see Patent Document 1)
[0003]
[Patent Document 1]
JP 2002-270008 A (FIG. 1)
[0004]
[Problems to be solved by the invention]
However, in the above-mentioned prior art, since the LED lamp emits infrared light, the LED lamp and the reflection surface do not both shine and appear bright even when lit, and therefore, even when lit at night, they can be viewed. The possibility that the presence of the light emitting unit is recognized by the user is extremely low. Therefore, there is almost no need to consider the design of the shape of the light emitting surface at the time of lighting, and it is not necessary to consider the appearance such as the uniformity of the luminance of the light emitting surface at the time of lighting. Therefore, in the above-mentioned prior art, there is no disclosure about a means for producing an aesthetic appearance when the vehicle lamp is viewed at the time of lighting.
[0005]
Further, as an example of a vehicular lamp using an LED lamp that emits visible light as a light source, a high-mount stop lamp or the like installed near a rear window of a vehicle is known. In this type of vehicular lamp, In many cases, a light distribution characteristic is formed by adjusting the degree of diffusion or the like by a lens cut that applies direct light from the LED lamp to an outer lens or the like.
[0006]
In this case, in order to improve the beauty of the vehicle lamp, the lens cut may be considered in terms of design, but once the LED lamp is turned on, the direct light emitted from the LED lamp may be changed. Since the brightness is strong, only the presence of the LED lamp is strongly recognized by the viewer, and the above-mentioned lens cut has a weak design effect, and the aesthetic effect cannot be improved as expected. ing. Further, since the amount of light radiated in the lateral direction is small in the LED lamp, it is often difficult to radiate light in that direction, which is also a problem.
[0007]
[Means for Solving the Problems]
The present invention is, as a specific means for solving the above-described conventional problems, an LED lamp provided so as to cross an optical axis with respect to an irradiation direction of a vehicle lamp, and a light emitted from the LED lamp is provided on the vehicle. The LED lamp and the reflecting surface are combined as a pair by a holder to form a light projecting unit, and a plurality of the light projecting units are tertiary based on a desired design. A vehicular lamp that is arranged along the original surface to form a light emitting surface, and the holder of the light emitting unit has an irradiation direction of the vehicular lamp on an inner side of a vehicle body. An upright wall portion substantially parallel to the light emitting unit is provided to connect the light emitting units to each other, or the housing and the light emitting unit in a horizontal direction, and the upright wall portion emits light from the LED lamp, or It solves the problem by providing a vehicular lamp according to claim to appropriate diffusion cuts that reflects light from the serial reflective surface toward the outside of the vehicle body is applied.
[0008]
BEST MODE FOR CARRYING OUT THE INVENTION
Next, the present invention will be described in detail based on an embodiment shown in the drawings. 1 is a vehicle lamp according to the present invention. The vehicle lamp 1 also employs an LED lamp 2 as a light source, and the LED lamp 2 irradiates the vehicle lamp 1. An optical axis Y is set in a direction X, that is, a direction crossing the horizontal direction, such as a downward direction, and the direction is changed in the irradiation direction X by the reflection surface 3. It is almost the same as that of. The optical axis Y may intersect the irradiation direction X in an upward direction.
[0009]
In FIG. 1, in order to simplify the drawing and clearly show the configuration, the vehicle lamp 1 is configured by one light emitting unit 4 in which one LED lamp 2 and one reflecting surface 3 are combined. However, in actual implementation, as shown in FIG. 2, an appropriate number of LED lamps 2 and reflecting surfaces 3 are used as holders so as to obtain a necessary and sufficient light emitting area for the purpose of improving visibility and the like. The vehicle lamp 1 is configured by combining the lamps 5 with each other.
[0010]
In the present invention, the LED lamp 2 is of a type that emits visible light such as red, yellow, amber, or white, and naturally reflects light from the LED lamp 2 when it is turned on. The reflecting surface 3 is in a visible state. Accordingly, the reflecting surface 3 is provided with an appropriate reflecting surface cut 3a so that a wide light distribution characteristic in the horizontal direction required for this type of vehicle lamp 1 can be obtained. 3 is considered to shine as uniform brightness.
[0011]
FIG. 3 shows, in a vertical cross section, the arrangement of a plurality of light projecting units 4 in the vehicle lamp 1 of the present invention. In recent vehicle designs, the vehicle lamp 1 is also adapted to the design of the vehicle body. Thus, for example, the outer lens 6 is often formed as a cubic curved surface.
[0012]
In such a case, in the vehicular lamp 1 of the present invention, the shape of the portion of the holder 5 that holds the LED lamp 2 and the reflecting surface 3 and constitutes the light projecting unit 4 is devised, so that the outer lens 6 The light projecting unit 4 is arranged so that the lower the light projecting unit 4 moves forward along the shape, that is, the shape (design) of the vehicle body.
[0013]
FIGS. 4 and 5 show the arrangement state of the light projecting unit 4 in a horizontal cross section, and in the recent vehicle design as in the vertical cross section described above, the horizontal cross section is also used. In many cases, the vehicle lighting device 1 employs a cubic curved surface along the narrowing of the vehicle body, for example.
[0014]
In this case, the holder 5 is provided with an upright wall portion 5a between the adjacent light emitting units 4, and the light emitting units 4 are displaced from each other in the front-rear direction so as to conform to the shape of the vehicle body or the like. Has been done. In this embodiment, as shown in FIG. 5, the upright wall portion 5a is provided with a diffusion cut 5b that receives light from the LED lamp 2 and reflects the light toward the side of the vehicle. Light is reflected toward the side surface of the vehicle beyond the provided reflection surface cut 3a, and the visibility from the side can be improved.
[0015]
Further, the holder 5 is provided with a hood portion 5c for covering the LED lamp 2 so that the LED lamp 2 is not directly seen when the vehicle lamp 1 is viewed in a normal state, and a light emitting portion of the extremely bright LED lamp 2 when lit. Is prevented from being seen, so that the luminance unevenness of the light emitting surface, which is conventionally felt at the time of lighting, is not generated.
[0016]
Next, the operation and effect of the vehicle lamp 1 of the present invention having the above-described configuration will be described. Each light projecting unit 4 is in a state where the irradiation direction is made to coincide with the irradiation direction X of the vehicle lamp 1, that is, the light is projected. The unit 4 can be arranged on a three-dimensional curved surface that conforms to the design of the vehicle body in the vertical direction and the horizontal direction in a state where the light distribution characteristics of the unit 4 satisfy the requirements.
[0017]
Accordingly, by making the shape of the outer lens 6 conform to the design of the vehicle, the light emitting unit 4 (reflection surface 3) is also provided for the vehicle lamp 1 which can provide a sense of unity with the vehicle design when not lit. It is assumed that the vehicle can be arranged in accordance with the design of the vehicle body, and that the unity with the vehicle design can be obtained even when the vehicle is lit.
[0018]
Also, the holder 5 is provided with an upright wall portion 5a, and the upright wall portion 5a is provided with a diffusion cut 5b for reflecting light from the LED lamp 2 (or the reflecting surface 3) toward the side of the vehicle body. A sufficient amount of light can be distributed also in the side direction to improve visibility from the side of the vehicle.
[0019]
Further, according to the present invention, the hood portion 5c is provided on the holder 5 so that the LED lamp 2 cannot be seen in a normal viewing state with respect to the vehicular lamp 1, and in addition, the reflecting surface 3 is provided with a reflecting surface cut 3a to provide a uniform Because the reflection is performed at a high luminance, the direct light from the LED lamp 2 looks extremely brighter than other parts in the related art because the LED lamp 2 is directly viewed, so that only the LED lamp 2 is turned on at the time of lighting. It becomes conspicuous and eliminates the effects of other design parts such as the shape of the outer lens 6, for example.
[0020]
FIG. 6 shows another embodiment of the vehicular lamp according to the present invention. In the previous embodiment, the vehicular lamp 1 has been described as an example in which the light projecting unit 4 is provided on the entire surface. Without limitation, for example, a lamp in which a plurality of lamps 1A and lamps 1B are integrally combined is referred to as a rear combination lamp or the like. It is only necessary that the light emitting unit 4 composed of the light source 1 and the reflecting surface 3 and the holder 5 be employed. The other lamp 1B has a different configuration such as a conventional configuration using the bulb 10 as a light source. Will also be good.
[0021]
【The invention's effect】
As described above, according to the present invention, an LED lamp provided so that its optical axis intersects the irradiation direction of the vehicle lamp, and the light emitted from the LED lamp is reflected in the irradiation direction of the vehicle lamp. A reflection surface, the LED lamp and the reflection surface are combined as a pair by a holder to form a light emitting unit, and a plurality of the light emitting units are arranged along a three-dimensional surface based on a desired design. A lighting device for a vehicle having a light emitting surface, wherein the holder of the light emitting unit is provided with an upright wall portion substantially parallel to an irradiation direction of the lighting device for a vehicle on a side inside the vehicle body. Alternatively, the connection between the housing and the light emitting unit is performed in the horizontal direction, and the light from the LED lamp or the light from the reflecting surface is reflected toward the outside of the vehicle body by the upright wall portion. First, not only the outer lens shape but also the light-emitting surface at the time of lighting, that is, the arrangement of the reflective surface is in conformity with the vehicle body shape. Not only at the time of lighting but also at the time of lighting, an extremely excellent effect for improving the aesthetic appearance is achieved.
[0022]
Secondly, by providing a diffusion cut in the upright wall of the holder having the above-described configuration, even when an LED lamp, which is difficult to emit light to the side, is used as a light source, when the lamp is turned on, the LED is placed on the side of the vehicle body. This makes it possible to emit a lamp, improve visibility from the side of the vehicle, and achieve an extremely excellent effect in improving safety during night driving.
[0023]
Thirdly, the LED lamp is covered by the hood portion of the holder in a normal viewing state, and light as a vehicle lamp is reflected at a time after being reflected by the reflection surface having the reflection surface cut. By having a configuration that can be seen by the viewer, the direct light from the LED lamp that has high brightness and makes other parts inconspicuous, such as the design shape of the outer lens, does not reach the viewer, This design is transmitted to the viewer, and also in this respect, it is extremely effective in improving the beauty of the vehicle lamp.
[Brief description of the drawings]
FIG. 1 is a perspective view showing an embodiment of a vehicular lamp according to the present invention, partly represented by a combination of one LED lamp and one reflection surface.
FIG. 2 is a front view showing an embodiment of a vehicular lamp according to the present invention.
FIG. 3 is a sectional view taken along line AA of FIG. 2;
FIG. 4 is a sectional view taken along line BB of FIG. 2;
FIG. 5 is a sectional view taken along line CC of FIG. 4;
FIG. 6 is a front view showing another embodiment of the vehicular lamp according to the present invention in a partially broken state.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Vehicle lamp 1A ... One lamp 1B ... The other lamp 2 ... LED lamp 3 ... Reflective surface 3a ... Reflective surface cut 4 ... Light emitting unit 5 ... Holder 5a ... Stand wall portion 5b … Diffusion cut 5c… Hood part 6… Outer lens 10… Light bulb

Claims (2)

An LED lamp provided so as to intersect the optical axis with respect to the irradiation direction of the vehicle lamp, and a reflecting surface that reflects light emitted from the LED lamp in the irradiation direction of the vehicle lamp, The reflecting surface is combined with the reflecting surface as a pair to form a light emitting unit, and a plurality of the light emitting units are arranged along a three-dimensional surface based on a desired design to form a light emitting surface. Vehicle lighting device. The holder of the light emitting unit is provided with an upright wall portion on the inner side of the vehicle body and substantially parallel to the irradiation direction of the vehicular lamp, so that the light emitting units are arranged in a horizontal direction. And a suitable diffusion cut that reflects the light from the LED lamp or the light from the reflecting surface toward the outside of the vehicle body is provided on the upright wall portion. The vehicular lamp according to claim 1.

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