JP4335402B2 - Vehicle signal lights - Google Patents

Description

[0001]
BACKGROUND OF THE INVENTION
The present invention relates to a vehicular lamp, and more specifically, a tail lamp that notifies the existence of the vehicle at night, a stop lamp that notifies the operation of the braking device to the outside, or a turn signal lamp that notifies the outside that a turn is performed. This relates to a vehicular lamp for signals.
[0002]
[Prior art]
FIG. 8 and FIG. 9 show examples of the configuration of a conventional vehicle signal lamp of this type. First, in the vehicle signal lamp 90 shown in FIG. 8, a light source 91 such as an incandescent bulb, a rotating paraboloid, and the like. A reflector 92 that is a surface and has the light source 91 as a focal point, and a lens 93 that is provided with a lens cut 93a such as a fish-eye cut, for example.
[0003]
When the light source 91 is turned on, the light from the light source 91 is converted into parallel rays by the reflector 92 and is incident on the lens 93. The lens cut 93a appropriately diffuses the parallel rays. A light distribution characteristic having a required irradiation angle is formed. Accordingly, when the lens 93 is viewed from the range of the irradiation angle of the above-described light distribution characteristic, the entire surface appears to shine with substantially uniform brightness, and the intended notification can be performed.
[0004]
Although not shown in the figure, instead of the reflector 92, a Fresnel lens having a focal point on the light source 91 is installed between the light source 91 and the lens 93, and the light from the light source is converted into parallel rays by this Fresnel lens. There is also a configuration in which the light is incident on the lens 93, and substantially the same operation as that shown in FIG. 7 can be obtained.
[0005]
Further, in the vehicular signal lamp 80 shown in FIG. 9, in order to solve the problem that the lens 91 appears to emit light when the lamp is lit, the impression becomes flat. As shown in FIG. 7, a reflector cut 82a having a fine uneven shape is provided on the surface of the reflector 82 having a basic shape formed as a paraboloid as in FIG. 7, and the reflector 82 itself diffuses and distributes light. It is supposed to form optical characteristics.
[0006]
By doing so, the lens 83 does not need to form a light distribution characteristic, and a transparent one can be adopted, so that the lens 83 can be seen through the lens 83 both when it is lit and when it is not lit. As a result, the vehicle signal lamp 80 has a feeling of depth, and an appearance different from the above-described configuration is obtained.
[0007]
[Problems to be solved by the invention]
Here, as this kind of vehicle signal lamp has a great influence on the design of the vehicle, a novel appearance is always required. However, even in the case shown in FIG. 9, when the number of vehicles to be used increases, the original novelty is lost, and it is difficult to differentiate from other vehicles.
[0008]
In addition, the conventional one shown in FIG. 8 and the one shown in FIG. 9 are provided with light sources 81 and 91 in a plane where the lenses 83 and 93 emit light when viewed from the outside. Direct light is radiated to the outside through the lens, and the presence of the light sources 81 and 91 is strongly recognized. At the time of light emission, the direct light part becomes brighter than the others and the display quality is deteriorated.
[0009]
[Means for Solving the Problems]
As specific means for solving the above-described conventional problems, the present invention includes a light source, a parabolic reflecting surface having a focal point near the light source, and a lens that diffuses reflected light from the reflecting surface. In the vehicle signal lamp, the outer lens and the inner lens are configured with a predetermined interval, and the outer lens is formed as a light colored transparent material with a thick lens portion formed in a pattern on a part thereof. is, the inner lens, ranges excluding the thick lens portion of the outer lens is at the member outer lens is formed of the same color or different colors, and, colored transparent material which was dark than the outer lens is formed, the range corresponding to the outer shape of the thick lens unit, department by providing plain-like or vehicle signal lamp, characterized in that it is formed of a colorless transparent member It is intended to solve.
[0010]
DETAILED DESCRIPTION OF THE INVENTION
Below, this invention is demonstrated in detail based on embodiment shown in a figure. 1 and 2 show a first embodiment of a vehicular signal lamp (hereinafter abbreviated as a signal lamp 1) according to the present invention. The signal lamp 1 includes a light source 2 which is, for example, an incandescent lamp, and the light source 2. A paraboloidal reflecting surface 3 such as a paraboloid of revolution, a parabolic column surface, a parabolic free-form surface, and the like, and light distribution characteristics are formed by appropriately diffusing the reflected light from the reflecting surface 3 It is the same as that of the conventional example in that it is composed of a lens that performs the above.
[0011]
Here, in the present invention, the lens is composed of the outer lens 4 and the inner lens 5, and the outer lens 4 is formed with a thick lens portion 4a having a pattern such as letters and figures, The outer lens 4 is formed of a light colored transparent material such as light red, light green, light yellow, and light blue. It should be noted that the thick lens portion 4a can be freely protruded to the front or back side of the outer lens 4. The outer lens 4 is transparent except for the thick lens portion 4a.
[0012]
The inner lens 5 is provided in a range excluding the thick lens portion 4a of the outer lens 4. At this time, when the signal lamp 1 is a tail / stop lamp, a red color that satisfies a specified color. When it is a turn signal lamp, it is amber or the like, and is darker than the member on which the outer lens 4 is formed.
[0013]
In actual implementation of the present invention, when the inner lens 5 is formed, the inner lens 5 may be provided with an opening 5a in a portion corresponding to the thick lens portion 4a of the outer lens 4 (see FIG. 1). However, it may be formed in a transparent shape with a colorless and transparent member, and a filter of a desired color may be attached except for a portion corresponding to the thick lens portion 4a.
[0014]
Here, if the mutual relationship between the color Co colored on the outer lens 4 and the color Ci colored on the inner lens 5 is described, the color Co and the color Ci are not necessarily similar colors. For example, even if the light from the light source 2 that has passed through the inner lens 5 further passes through the outer lens 4 such that the color Co is light yellow and the color Ci is deep red, the tail / stop lamp As long as it falls within the specified color range.
[0015]
Further, as shown in FIG. 2, when a cap 6 of a predetermined color is attached to the light source 2, the color Ci colored on the inner lens 5 is, for example, a smoke that has no color and reduces only the light amount. The color (neutral gray) can also be freely changed. By doing so, when the sun is at a low position, such as when the sun rises or when it is sunset, the pseudo light that is generated when the sunlight enters the signal lamp 1 It becomes possible to reduce lighting.
[0016]
Furthermore, in the signal lamp 1 having the above-described configuration, the outer lens 4 and the inner lens 5 have many through portions, and it is expected that it is difficult to obtain a prescribed light distribution characteristic. In some cases, the cap 6 may be subjected to a diffusion cut to assist the formation of light distribution. Therefore, the cap 6 can freely have either a coloring function or a diffusing function, or both functions. In addition, what is shown by the code | symbol 7 in a figure is the housing which serves also as the reflective surface 3, This housing 7 and the outer lens 4 are adhere | attached, and the waterproof function inside a lamp is improved.
[0017]
In the signal lamp 1 of the present invention configured as described above, the thick lens portion 4a formed as a pattern on the outer lens 4 is brightly lifted from the surroundings by the darker inner lens 5 provided on the back surface when turned off. Visible and brighter from the light emitting surface that shines as a functional color by the inner lens 5 that is darker when viewed and turned on, and can provide an unprecedented new way of viewing both when lit and when not lit It becomes.
[0018]
FIG. 3 shows a second embodiment of the signal lamp 1 of the present invention as a main part. In this second embodiment, the inner lens 15 other than the place where the thick lens portion 4a of the outer lens 4 is provided. In this way, only the thick lens portion 4a on the outer lens 4 side can be seen when the light source 2 is not lit, and both the thick lens portions are both lit when the light source 2 is lit. 4a and 15b appear to be combined, the design of the light-emitting surface can be different between when it is lit and when it is not lit, and the signal lamp 1 can be made to have a more innovative appearance.
[0019]
FIG. 4 is a main part of the third embodiment of the present invention. In the first and second embodiments, both the outer lens 4 and the inner lens 5 (15) tend to have many through portions. As described above, there is a possibility that it is difficult to form the light distribution characteristics.
[0020]
This third embodiment solves that point, and the thick lens portion provided in the inner lens 25 is formed as a plurality of spherical projections 25b as shown in the figure, and the arrangement of the projections 25b and By appropriately adjusting the number, diffusion necessary for forming the light distribution characteristics is performed. Therefore, as long as the purpose of diffusion can be achieved, the projection is not limited to the projection 25b, and may be a polyhedral prism-shaped cut or a fish-eye cut conventionally used.
[0021]
FIG. 5 shows an essential part of the fourth embodiment of the present invention. In this fourth embodiment, the inner lens 35 is provided with a standing wall portion 35c along the outline of the thick lens portion 4a of the outer lens 4. ing. By forming the standing wall portion 35c in this manner, when the signal lamp 1 is assembled, the inner lens 35 is simply sandwiched between the outer lens 4 and the housing 7, and the tip of the standing wall portion 35c projects into contact with the back surface of the outer lens 4. Fixing is performed, and the number of steps for mounting the inner lens 35 is not required.
[0022]
In addition, the above-described standing wall portion 35c allows the distance between the outer lens 4 and the inner lens 35 to be set to the design value correctly, and also causes tilting and misalignment between the lenses 4 and 35 due to assembly errors. Therefore, the lighting state as intended by the designer can be reliably realized.
[0023]
FIG. 6 shows a fifth embodiment of the present invention. In this fifth embodiment, an elliptical reflecting surface 13 a such as a spheroid is formed on a part of the reflecting surface 13. The first focal point f1 of the elliptical reflecting surface 13a is disposed in the vicinity of the light source 2, and the second focal point f2 is disposed in the vicinity of the back surface of the thick lens portion 4a of the outer lens 4. By doing in this way, the said thick lens part 4a will be made to shine with the pseudo | simulation point light source by a 2nd focus, and it will shine brighter further, and the design given to the outer lens 4 is emphasized. .
[0024]
FIG. 7 shows a sixth embodiment of the present invention. In the first to fifth embodiments described above, an incandescent lamp is used as the light source 2, but the present invention is not limited to this. Instead, an LED lamp may be adopted as the light source 12 in place of the incandescent bulb as shown in FIG. In this case, for example, an LED lamp (light source 12) is arranged corresponding to the position of the thick lens portion 4a of the outer lens 4, and appropriate adjustments may be made so as to obtain the same appearance as the incandescent bulb. preferable.
[0025]
【The invention's effect】
As described above, according to the present invention, the lens is composed of an outer lens and an inner lens, and the outer lens is a light colored transparent material, and a thick lens portion is formed in a pattern on a part thereof. The vehicle signal lamp is made of a colored transparent material that is the same color as or different from the member on which the outer lens is formed in the range excluding the thick lens portion of the outer lens, and a dark color. When the light source is not lit, the thick lens part of the pattern on the outer lens formed in a light color can be seen from the outside, making it possible to achieve an unprecedented new appearance. It has an extremely excellent effect on improving the aesthetic appearance.
[0026]
In addition, when the light source is turned on at night, etc., the pattern on the outer lens shines brightly, and the pattern on the inner lens is displayed in an overlapping manner. The degree of attention to the signal lamp is also improved, and the effect of improving the information transmission function, which is the original purpose, is also achieved.
[Brief description of the drawings]
FIG. 1 is a perspective view showing a vehicle signal lamp according to a first embodiment of the present invention in an exploded state.
FIG. 2 is a cross-sectional view taken along the line AA in FIG.
FIG. 3 is an explanatory view showing a second embodiment of a vehicular signal lamp according to the present invention in the same manner.
FIG. 4 is an explanatory view showing the third embodiment in the main part.
FIG. 5 is an explanatory view showing the fourth embodiment in the main part.
FIG. 6 is a perspective view showing the fifth embodiment in a partially broken state.
FIG. 7 is a perspective view showing the sixth embodiment in a partially broken state.
FIG. 8 is a cross-sectional view showing a conventional example.
FIG. 9 is a cross-sectional view showing another conventional example.
[Explanation of symbols]
DESCRIPTION OF SYMBOLS 1 ... Vehicle signal lamp 2, 12 ... Light source 3, 13 ... Reflective surface 13a ... Elliptic reflective surface 4 ... Outer lens 4a ... Thick lens part 5, 15, 25, 35 ... Inner lens 5a …… Open 15b …… Thick lens portion 35c …… Standing wall portion 6 …… Cap 7 …… Housing

Claims (7)

In a vehicular signal lamp comprising a light source, a parabolic reflecting surface having a focal point in the vicinity of the light source, and a lens that diffuses reflected light from the reflecting surface,
The lens is configured with a predetermined interval between the outer lens and the inner lens,
The outer lens is formed with a thick lens part in a pattern as a light colored transparent material,
The inner lens is
The range excluding the thick lens portion of the outer lens, the Outer lens formed member and the same color or different colors, and is formed of a colored transparent material in which the dark than the outer lens,
A vehicle signal lamp characterized in that a range corresponding to the outer shape of the thick lens portion is formed of a transparent or colorless transparent member . The vehicular signal lamp according to claim 1, wherein a pattern-like thick lens portion is formed on an inner lens in a range excluding the thick lens portion of the outer lens. 3. The vehicular signal lamp according to claim 2, wherein the thick lens portion of the inner lens is a plurality of projecting surfaces or a polyhedral cut prism surface. 4. The inner lens is provided with a standing wall portion along the contour of the thick lens portion of the thick lens of the outer lens facing the outer lens side. The vehicle signal lamp as described. The elliptical reflecting surface having a first focal point in the vicinity of the light source and a second focal point in the vicinity of the back surface of the thick lens portion is provided on a part of the reflecting surface. 4. The vehicle signal lamp according to any one of 4 above. 6. The vehicular signal lamp according to claim 1, wherein a cap for coloring or diffusing light from the light source is attached to the light source. The vehicle signal lamp according to any one of claims 1 to 6, wherein the light source is an LED lamp.

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