JPH03133003A - Signal lamp for vehicle - Google Patents

Abstract

PURPOSE:To reduce the number of parts so as to reduce the cost of a signal lamp for vehicles by forming on one surface of an inner lens a plurality of transmitting portions of fixed width which are relatively recessed, in such a manner that the intervals between them become gradually narrower, and covering with a light blocking film a light blocking portion which is so formed as to project relatively. CONSTITUTION:A plurality of channeled transmitting portions 4 are formed on one face 3a of an inner lens 3 in such a manner that each of the transmitting portions 4 has roughly U-shaped cross section and has the same channel width and the same depth, and also that the intervals between the portions 4 are wide at the upper end 3c of the inner lens 3 and become gradually narrower toward the center portion of the lens; i.e. a light blocking portion 5 formed at the center of the transmitting portions 4 is formed as a relatively projecting face and a light blocking film 6 is formed over the light blocking portion 5 using e.g. an opaque film whereby a gradually decreasing light blocking means which is dense on the side of the upper end 3c and becomes thinner toward the center portion is obtained. The number of parts is thus decreased so that the cost of a signal lamp can be reduced.

Description

[Detailed description of the invention] [Industrial application field]

The present invention relates to lighting lights for vehicles such as automobiles,
Specifically, the present invention relates to a signal light that is provided with a light-shielding portion on the upper end surface, the lower end surface, or both, which is dark at the ends and becomes thinner toward the center, thereby improving the viewing feeling.

[Conventional technology]

FIG. 4 shows a conventional plate lamp 21. For example, when direct light enters the lamp 21 from above during the daytime, the light is reflected inside the lamp 21 and passes through the outer lens 22 again. This causes so-called false lighting that is transmitted through the lamp and is emitted to the outside.Also, this false lighting occurs extremely strongly on the lower end side of the lamp and becomes unsightly. A film 24 is attached that has a gradation sun that is darker on the sides and becomes lighter toward the center, thereby preventing the above-mentioned problems, and the same treatment can be applied to the upper end side or both upper and lower ends of the inner lens 23 as necessary. Some are decorated on the sides.

[Problem to be solved by the invention]

However, the lamp 21 to which the film 24 described above is attached increases the number of parts, which causes an increase in cost.Furthermore, the film 24 with the gradation date described above is, for example, specially designed for each model of the lamp 21. Since it is very time-consuming to manufacture the light fixture 21, this further increases the cost, leading to the problem that the manufacturing cost of the lamp 21 becomes extremely high. The challenge was to solve this problem.

[Means to solve the problem]

As a specific means for solving the above-mentioned conventional problems, the present invention provides a vehicle signal light comprising a light shielding means provided in a predetermined width range of at least one end above and below the lens, which has a sound range from the end. In the light shielding means, a plurality of relatively concave transmitting parts having a constant width are formed on one surface of the inner lens so that the intervals between the respective parts correspond to a sound range, and thereby the light shielding means is formed as a relatively convex light shielding means. The above-mentioned conventional problems are solved by providing a vehicle signal lamp characterized in that a portion thereof is coated with a light-shielding film.

【Example】

Next, the present invention will be explained in detail based on embodiments shown in the drawings. What is shown in FIG. 1 is a first embodiment of the present invention, which is a vehicle signal lamp (hereinafter abbreviated as lamp 1) 1, and this lamp 1 is provided with an outer lens 2 and an inner lens 3. However, a plurality of groove-shaped transmission portions 4 are formed on one surface 3a1 of the inner lens 3, for example, the surface where the Fresnel lens cut 3b cannot be made. The transmissive portion 4 has a substantially U-shaped or U-shaped cross section, and has the same groove width and depth. For example, the distance between the two is wide at the upper end 3c, and the distance is gradually narrowed toward the center. By providing the transmitting portion 4 on one surface 3a of the inner lens 3 in this way, the transmitting portions 4 come into contact with each other at a predetermined distance from the end, and one surface 3a of the inner lens 3 comes into contact with the other. The surface 3a is formed as a surface recessed by the depth of the transparent portion 4. This means that the light shielding part 5 formed in the middle of the transmitting part 4 is formed as a relatively convex surface, and a light shielding film 8 is formed on this light shielding part 5 by hot stamping, for example, using an opaque film. By doing so, the inner lens 3 becomes dark on the upper end 3c side and gradually becomes thinner toward the center, thereby achieving the objective. Although not shown in the drawings, it goes without saying that the same method can be applied to the lower end side of the inner lens 3. Further, as a result of numerous experiments carried out by the inventor to accomplish this invention, it has been found that when the width of the transparent portion 4 is set to 1 ff11 or less, the paint is applied from a slightly oblique direction even when spray painting the corresponding portion. It has been found that when sprayed, the transmittance of the transmitting portion 4 is maintained at a practically sufficient degree, so the light shielding film 6 may be provided by a coating method, thereby making it possible to further reduce costs. What is shown in FIG. 2 is also a second embodiment of the present invention;
In contrast, this embodiment was designed from the beginning for the purpose of forming a light-shielding film 6 by painting, and the upper end of one surface 3a of the inner lens 3 As in the previous embodiment, a plurality of shielding walls 7 having the same width and height from the 3c side are spaced widely apart from each other on the upper end 3c side, and the spaces gradually narrow as they move toward the center. It is. By spraying paint onto the thus formed inner lens 3 from an appropriate diagonal direction as shown by the arrow Z in the figure, the paint adheres to the portions not shielded by the shielding wall 7 and blocks light. A film 6 is formed, and this light shielding film 6 is formed approximately in proportion to the interval between the shielding walls 7, so that the inner lens 3 has a sound range that is dark on the upper end 3c side and gradually becomes thinner toward the center. It provides a means of blocking light,
The same effect as the previous embodiment can be obtained. It should be noted that the shielding wall 7 does not need to be provided over the entire surface 3a of the inner lens 3; it is necessary to apply masking or the like in advance to the position where the entire surface is a transparent surface to prevent the above-mentioned coating from adhering. It's a good thing. Next, what is shown in FIG. 3 is a third embodiment of the present invention, which is similar to the second embodiment in that a shielding wall 8 is provided on one surface 3a of the inner lens 3; Unlike the embodiment described above, the height of the shielding wall 8 is lower on the upper end 3c side and gradually increases toward the center, and at the same time, the height of the shielding wall 8 is set at equal intervals. By spraying the paint on the inner lens 3 formed in this way from an appropriate diagonal direction, the inner lens 3 is coated with a paint that is thicker on the upper end 3c side and gradually becomes thinner toward the center, as in the second embodiment. This provides a sound-blocking means for the sound range, and also achieves the objective. The second embodiment and the third embodiment may be appropriately selected depending on, for example, the difficulty in manufacturing the mold or the rate of change in the degree of light attenuation by the light shielding film 6, or they may be used in combination. That is, it goes without saying that both the height and the interval may be changed.

【Effect of the invention】

As explained above, according to the present invention, the light shielding means is formed by forming a plurality of constant, relatively concave transmitting parts on one surface of the inner lens, so that the distance between each of them gradually decreases, thereby making the light shielding means relatively concave. By coating the light-shielding portion formed as a convex portion with a light-shielding film, the film used in the conventional example can be eliminated, the number of parts can be reduced, and costs can be reduced. By integrating the light shielding means, it is possible to omit the extremely labor-intensive step of manufacturing the film for each model, for example, and to reduce the cost of the -layer, which is an extremely excellent effect.

[Brief explanation of the drawing]

FIG. 1 is a sectional view showing a first embodiment of a vehicle signal lamp according to the present invention, FIG. 2 is a sectional view showing a second embodiment of the invention, and FIG. 3 is a sectional view showing a third embodiment. FIG. 4 is a sectional view showing a conventional example, and FIG. 6 is an explanatory view showing a conventional film. 3b... Fresnel cut 3c... Upper end 4... Transmissive part 5... Light shielding part 6... Light shielding film 7.8... Shielding wall

Claims (3)

[Claims] (1) In a vehicle signal light comprising a temporary light shielding means provided from the end in a predetermined width range at least on one end of the lens, the light shielding means is fixed on one surface of the inner lens. A device for a vehicle, characterized in that a plurality of transparent portions each having a relatively concave width are formed such that the distance between each portion gradually decreases, and the light shielding portion formed as a relatively convex portion is coated with a light shielding film. Signal light. (2) The light shielding means is formed by forming a plurality of relatively convex shielding walls of a constant width and a constant height on one surface of the inner lens so that the distance between each shielding wall gradually decreases, and further diagonal at an appropriate angle. 2. The vehicle signal lamp according to claim 1, wherein a temporary light-shielding film is formed on the relatively concave surface by spraying paint from the opposite side. (3) The light shielding means is formed by forming a plurality of relatively convex shielding walls having a constant width and increasing height at equal intervals on one surface of the inner lens, and further applying paint from an oblique direction at an appropriate angle. 2. The vehicle signal lamp according to claim 1, wherein a temporary light-shielding film is formed on a relatively concave surface by spraying the light.