JPH0541444Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] This invention illuminates the outer lens periphery with light incident from the outside in a vehicle body color or other desired color when the light is off, and illuminates the outer lens from the center side. The present invention relates to a lamp device that is useful as a marker light for vehicles such as automobiles and has an excellent sense of color unity between the vehicle body and vehicle lamps by visually changing the shading so that it gradually becomes darker toward the periphery.

[Conventional technology]

Lamp devices that make up marker lights, such as width lights, turn signal lights, brake lights, and reversing lights installed at the front and rear ends of automobiles, have different lighting colors, so conventionally they have generally been divided into sections. Consisting of a lamp device and covered with a colored or non-colored translucent outer lens having a filter function of a predetermined color, it emits a predetermined marker color necessary when configured as a marker light. There is.

[The problem that the idea aims to solve]

However, in conventional vehicle lamp devices, the divisions between the outer lenses constituting each lamp device or the boundary with the vehicle body are clearly defined, and when the lamp device is not lit, the functional Even when not in use, there is a lack of color integration between each outer lens or the vehicle body, and there is a lack of unity as a whole lighting device, especially when a so-called combination type lamp device is configured with multiple marker lights. However, the problem was that the vehicle body design was complicated. Therefore, conventionally, as shown in FIGS. 5 and 6, the outer lens 50 is formed of a smoked lens, and in order to add shading to the color from the front side, from the center part 50a of the lens to the peripheral part 50b.
A lens in which the lens thickness is changed stepwise (50a < 50b) has been proposed (see Figure 6), but it not only has poor moldability, such as the occurrence of "sink marks" in the thick part, but also has problems with the lamp body. It had drawbacks such as poor assembly performance and rising material costs.

The present invention was devised in view of the above-mentioned problems, and when turned on, it is possible to produce a clear lighting color as a marker light, which is required for each lamp device, and when it is not turned on, it is possible to produce a clear lighting color as a marker light. A predetermined color is obtained at the periphery of the lamp device, that is, between the outer lenses of each lamp device or at the boundary with the vehicle body, and the shade of the reflected color is gradually changed from approximately the center of the outer lens to the periphery to make it visible. The object of the present invention is to propose a lamp device that can create a sense of color unity through a so-called blurring effect.

[Means to solve the problem]

In order to achieve the above object, the lamp device according to the present invention includes: an outer lens made of a translucent material; an inner lens made of a translucent material arranged in parallel behind the outer lens; A lamp device comprising a light beam collimating means located behind the inner lens and irradiating the light beam from the light source as a parallel light beam onto the back surface of the inner lens, and a lamp body to which these component parts are fixed. The central part in the horizontal or vertical direction is curved into a convex shape protruding toward the back side of the outer lens, and the peripheral part continuous to the convex part is curved into a concave shape with a basic cross-sectional shape of a parabola. A band-shaped reflective film having a mirror surface or a semi-transparent mirror surface is deposited on the surface in a manner perpendicular to the direction of bending, gradually changing the formation width from the periphery to the center at a predetermined pitch so that it becomes narrower, and A condensing lens system or a diffusing lens system lens step corresponding to the reflective coating is formed on the entire back surface, and a colored reflective surface of a desired color is formed on the inner surface of the side wall of the lamp body or outer lens in the direction of reflection of the reflective coating. This is the measure taken.

[Effect]

According to the above configuration, when the light is turned on, the outer lens is illuminated with the radiation light from the light source through the gap between the radiation surface of the inner lens and the reflective film, and is colored in a predetermined marker color, and when the light is not turned on, Sometimes, external light that enters through the outer lens is deflected and reflected to the side of the inner lens by a band-shaped reflective film formed on the concave surface of the inner lens, and this results in coloring formed on the opposing lamp body or the inner surface of the side wall of the outer lens. The reflective surface is illuminated to make the vehicle body color or the outer lens, garnish, etc. of other adjacent lens devices visible in color, as desired, to achieve the above-mentioned blurring effect.

Additionally, by concavely curving the peripheral surface of the inner lens to form a parabola in its basic cross-sectional shape, it is possible to deflect and reflect most of the external light with different incident angles toward the peripheral part of the inner lens. Therefore, it is beneficial to improve the brightness ratio of the lens surface.

〔Example〕

Embodiments of the lamp device according to the present invention will be described below with reference to the drawings.

The lamp device 1 is constructed by applying a reflective coating to the inner surface of a lamp body 2 and forming it into a parabolic reflecting mirror surface 3 to form a lamp chamber 4 (a separate parabolic reflecting mirror is placed inside the lamp body). ), a light source 5 for lighting a bulb or the like is placed at the focal point F position of the parabolic reflecting mirror surface 3.
At the same time, an outer lens 6 made of a translucent material is provided on the front opening of the lamp chamber 4, and an inner lens 7 is arranged in parallel on the back side of the outer lens 6, so that the emitted light L of the light source 5 is The parabolic reflecting mirror surface 3 refracts and deflects the light into a parallel light beam, and the light is emitted to the front of the lamp chamber 4 via an inner lens 7 and an outer lens 6. The inner lens 7 having the above arrangement is
It is molded from an uncolored translucent material, and in this embodiment, the central portion 7a in the vertical direction is shaped like a convex surface so as to protrude toward the back side of the outer lens 6 as a whole, and is continuous with the convex surface portion. At least the surface of the peripheral portion 7b is curved into a concave shape forming a parabola B in the basic cross-sectional shape, and a band-shaped reflective coating 8 having a mirror surface or a semi-transparent mirror surface is curved on the surface of the peripheral portion 7b. The reflective film 8 is applied perpendicularly to the direction, and the forming width W is gradually changed so that it becomes narrower from the periphery to the center side, and is applied at a predetermined pitch P, and the central part 7a is configured as a transparent surface on which no reflective film 8 is applied. It is. The reflective coating 8 can be formed by vapor deposition of a colorless paint containing a metal material, or by pasting a film that has the same effect.
When configuring the outer lens 6 as a structure that develops a predetermined color tone such as a direction indicator light or a brake light,
The inner lens 7 may be made of a colored material, or a filter (not shown) made of a colored material may be attached to or interposed therein.

Further, on the back surface of the inner lens 7, a lens step 9 of a condensing lens system or a diffusing lens system corresponding to the reflective coating 8 is formed over almost the entire surface of the inner lens 7. The structure is such that the light beam L is emitted to the outside of the outer lens 6 through a gap 10 between the reflective coatings 8.

The inner surface of the side wall of the lamp body 2 that the peripheral portion 7b of the inner lens 7 faces (in a lamp device having a structure in which the side wall portion of the outer lens 6 is exposed in the lamp chamber 4, the inner surface of the side wall of the outer lens 6) For example, a colored reflective surface 11 is formed in the same color as the vehicle body color or the outer lens of another adjacent lamp device, and the colored reflective surface 11 is formed on the surface of the peripheral portion 7b of the inner lens 7. It is configured to be illuminated by the reflected light from the reflective coating 8 that has been deposited.

According to the above embodiment, when the light is not lit, the light flux L1 that enters the peripheral part 7b from the outside through the outer lens 6 is reflected by the light reflectance of the reflective film 8 deposited on the surface of the peripheral part 7b. The colored reflective surface 1 formed on the inner side of the outer lens 6 or the side wall of the lamp body 2 is reflected to the side of the inner lens 7 according to the curvature of the concave surface formed on the surface of the peripheral portion 7b
1 is illuminated and viewed from outside the outer lens 6, the surface of the outer lens 6 is the colored reflective surface 1.
1, and is visually recognized (viewpoint X) by creating a color blurring effect corresponding to, for example, the vehicle body or other adjacent lamp devices. In other words, when the light flux L1 enters from the outside when the light is not lit, the inner lens 7
Due to the reflective action of the reflective coating 8, the surface of the outer lens 6 develops a color that gradually changes from the center to the periphery so as to be integrated with the coloring of the outer lens of the vehicle body A or the adjacent lamp device.
Furthermore, during lighting, the luminous flux L emitted from the light source 5 is transmitted not only to the gap 10 between the reflective coatings 8 but also to the reflective coating 8 when the reflective coating 8 is formed of a semi-transparent mirror surface. 8 and illuminates the outer lens 6, which functions as a marker light (view point Y).

Note that the beam collimating means is not limited to the parabolic reflecting mirror surface or parabolic reflecting mirror shown in the above embodiments, but may also utilize various optical means such as a Fresnel lens. Furthermore, it is also possible to take the bending direction of the inner lens in the horizontal direction and form concave portions having a basic cross-sectional shape of a parabola on the left and right peripheral portions of the inner lens.

[Effect of idea]

Since the lamp device according to the present invention is configured as described above, when configured as a marker light for a car, for example, when the lamp device is not lit, light entering from the outside into the outer lens can cause interference between the lens devices or the boundary between the vehicle body and the outer lens. Not only does it have a blurring effect that creates color uniformity or a sense of unity between lenses, but it also increases the brightness ratio between when the lens is lit and when it is not lit, and it also reduces the curvature of the curved portion of the overall shape of the inner lens. It has excellent features such as improving the moldability of the inner lens and the processability of the lens surface, and the practical effects after implementation of the present invention are extremely large.

[Brief explanation of the drawing]

Fig. 1 is a front view showing the lamp device according to the present invention mounted on a vehicle, Fig. 2 is an enlarged sectional view taken along the line of Fig. 1, Fig. 3 is an enlarged view of Fig. 2, and Fig. 4 is an inner FIG. 5 is a front view showing an example of an outer lens configured in a conventional lamp device, and FIG. 6 is a longitudinal sectional view showing the structure of the lens. 2... Lamp body, 3... Luminous flux parallelizing means, 6
...Outer lens, 7...Inner lens, 7
a...Central part, 7b...Peripheral part, 8...Reflective coating, 9...Lens step, 11...Colored reflective surface.

Claims (1)

[Scope of utility model registration request] An outer lens made of a translucent material, an inner lens made of a translucent material arranged in parallel behind the outer lens, and an inner lens positioned behind the inner lens to direct the light flux from the light source. In a lamp device comprising a light beam collimating means that irradiates the back surface of the lens as a parallel light beam, and a lamp body to which these component parts are fixed, the center portion of the inner lens in the horizontal or vertical direction protrudes toward the back surface side of the outer lens. A strip-shaped reflective film having a convex surface shape, and a peripheral portion continuous with the convex surface portion curved into a concave shape with a basic cross-sectional shape of a parabola, and a mirror surface or a semi-transparent mirror surface on the surface of the peripheral portion. perpendicular to the bending direction, gradually changing the forming width from the periphery to the center side at a predetermined pitch so that it becomes narrower,
A condensing lens system or a diffusing lens system lens step corresponding to the reflective coating is formed on the entire back surface, and a colored reflective surface of a desired color is formed on the inner surface of the side wall of the lamp body or outer lens in the direction of reflection of the reflective coating. A lamp device characterized by comprising: