JPH0447844Y2 - - Google Patents

Description

[Detailed description of the invention] [Field of industrial application] The present invention relates to a lamp device that can exhibit two lighting colors with one lamp, and is particularly useful as a marker light for vehicles such as automobiles. This invention relates to a color lamp device.

[Conventional technology]

Conventionally, for example, marker lights such as brake lights, turn signal lights, and reversing lights have been installed at the rear of automobiles, but each of these marker lights lights up in a different color, so generally these types of marker lights are The indicator lights are each composed of separately sectioned lamp devices,
Lenses with different color filters are provided to develop a predetermined marker color.

[The problem that the idea aims to solve]

Therefore, in this type of lamp device, each color is emitted by the reflected light from the filter even when the lamp is not lit.
Many of these marking colors were gathered at the rear and were subject to color design regulations.

The present invention was devised in view of the above problems, and provides a two-color lamp device that can exhibit two lighting colors with one lamp and is particularly useful as a sign light for vehicles such as automobiles. For example, in the case of automobile marker lights, the brake light emits red light, the turn signal light emits orange (amber), the tail light emits red light, the reversing light emits white light, and the reversing light emits red light. It is an object of the present invention to provide a two-color lamp device that can be used as a marker light, emitting white light and orange light as a direction indicator light.

[Means to solve the problem]

The principle of the two-color lamp device according to the present invention is, as shown in FIG. 1, a double filament bulb 1 having two filaments 2 and 3 located apart,
A Fresnel lens 4 is provided in front of the double filament bulb 1 with the filament position substantially at the focal point, and deflects transmitted light into a substantially parallel beam.
, a condenser lens 5 located in front of the Fresnel lens 4 and constituting condensing lens steps 6, 6, etc. of appropriate pitch P1; It is located at the focal position and the pitch of the lens step 6.
A first light-transmitting color portion 8 (width p1) and a second light-transmitting color portion 9 (width p2) having different color tones for each P1 and the same pitch P2.
and filter lenses 7 which are arranged alternately.

The width ratio of the first transparent colored portion 8 and the second transparent colored portion 9 of the filter lens 7 can be changed without changing P1=P2=p1+p2, The transparent colored portions 8 and 9 each occupy an area corresponding to at least the imaging position of the filaments 2 and 3 by the respective lens steps 6.

The filter lens 7 may be formed by integrally molding a translucent resin having a first color and a translucent resin having a second color by two-color molding, or by molding a translucent resin having a first color and a translucent resin having a second color. This is a material in which a color transparent paint and a second color transparent paint are applied alternately.

[Effect]

The two-color lamp device according to the present invention changes the color of emitted light by selecting the lighting of the filaments 2 and 3 of the double filament bulb 1. First, as shown by the solid line in FIG. When the upper filament 2 at the focal point F on CL is lit, the light flux L1 transmitted through the Fresnel lens 4 is
The light flux L1, which becomes a light flux parallel to the lens axis CL of the Fresnel lens 4 (zero angle of inclination) and passes through each lens step 6, 6... of the condensing lens 5, has the first transparent color of the filter lens 7. The area 8 is focused, and the transmitted light develops a marker color having the transmitted color of the area.

In addition, as shown by the broken line, when the lower filament 3 located below the focal point F position on the lens axis CL is lit, the light flux L2 transmitted through the Fresnel lens 4 is transmitted along the lens axis of the Fresnel lens 4.
The light flux L2 becomes an upward parallel light flux that is deflected at a certain angle (inclination angle α degree) with respect to CL, and passes through each lens step 6, 6... of the condenser lens 5.
are respectively focused on the second transparent color portion 9 of the filter lens 7, and the transmitted light emits a marker color having the transmitted color of the portion.

〔Example〕

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

Figures 2 to 4 show a first embodiment of the present invention, which uses a double filament bulb 1 in which filaments 2 and 3 are arranged in the vertical direction of the lamp device, and parallelizes the luminous flux. This shows an example in which a Fresnel lens 4 and a Fresnel reflecting mirror 41 are used as means.

A double filament bulb 1 having two filaments 2 and 3 displaced in the vertical direction is fixed on the inner surface of the bottom of the lamp body 10.
One filament 2 is connected to the lamp device center line CL.
The upper filament 3 is located at the F position of both focal points of a Fresnel lens 4 and a Fresnel reflecting mirror 41, which will be described later, and the other filament 3 is located at a distance below the focal point F position. Further, on the inner surface of the bottom of the lamp body 10, an annular Fresnel reflector 4 having the focal point F is disposed around the double filament bulb 1.
1 is fixedly installed, and a Fresnel lens 4 having a focal point F is also fixedly installed in front of the double filament bulb 1. A condensing lens 5 comprising condensing type lens steps 6, 6, . Pitch of lens steps 6, 6... of the above-mentioned condensing lens 5
P1 is the colorless transparent colored part 8 of the filter lens 7
(width p1) and the width of the red transparent color part 9 (width p2) (p1 + p2) is the same as pitch P2 (P1 = P2),
For each pitch P2, a red transparent resin member 72 with a width p2 is attached to a colorless transparent resin plate 71 so that the colorless transparent color portion 8 and the red transparent color portion 9 are alternately positioned p1. They are insert molded so that they are arranged at intervals of .

In addition, 11 in the figure is an annular shade member provided so that the reflected light beam and the direct light beam do not intersect.

In the above configuration, since the filter lens 7 is a combination of colorless and red, the reverse light, brake light,
Alternatively, it can be used as a marker light for backing lights and taillights, and by changing the combination of these two colors to a combination of colorless and orange, it can be changed to a marker light for backing lights and direction indicators. .

Next, a second embodiment of the present invention will be described with reference to FIGS. 5 to 7.

This embodiment uses a double filament bulb 1a in which filaments 2 and 3 are arranged in the direction of the central axis of the lamp device, and uses a parabolic mirror as a beam collimating means.

The inner surface of the bottom of the lamp body 10a is a parabolic curved surface with a focal point F, and the inner surface is processed into a mirror surface 42 for reflecting light. In the double filament valve 1a, one filament 2 is located at the focal point F, and the other filament 3 is located at a distance behind the focal point F. Further, a condenser lens 5a comprising condensing type concentric lens steps 6, 6, . A filter lens 7a is disposed in which a pair of light-transmitting colored portions 8 and 9 are arranged alternately in concentric circles with different color tones corresponding to the positions. Lens step 6 of the condensing lens 5a,
The pitch P1 of 6... is the same as in the first embodiment, the yellow transparent color portion 8 (width) of the filter lens 7a.
p1) and the width of the red transparent color part 9 (width p2) (p1 + p2) is the same as pitch P2 (P1 + P2),
For each pitch P2, a red transparent resin member 72a having a width p2 is attached to a yellow transparent resin plate 71a so that the yellow transparent color portion 8 and the red transparent color portion 9 are alternately positioned p1. They are insert molded so that they are arranged concentrically at intervals of .

In the dichroic lamp device having the above configuration, when the filament 2 located at the focal point F of the light reflecting mirror surface 42 forming a paraboloid is turned on, the luminous flux becomes parallel to the central axis CL as shown by the solid line and is focused. The transmitted light flux that has passed through the optical lens 5a comes to pass through the red transparent color portion 9 of the filter lens 7a, and exhibits a red marker color. Furthermore, when another filament 3 is turned on, the light beam expands outward at an angle β with respect to the central axis CL, as shown by the broken line, and the condensing lens 5
The transmitted light flux that has passed through the filter lens 7a comes to pass through the yellow transparent color portion 8 of the filter lens 7a, and exhibits a yellow marker color.

In the above embodiments, a combination of colorless and red colors and a combination of yellow and red colors were described, but the color combinations of the present invention can be changed in various ways depending on the purpose of implementation. Needless to say. The filter lens can also be constructed by applying a transparent paint to a colorless transparent plate.

[Effect of idea]

Since the dichroic lamp device according to the present invention is constructed as described above, the light flux collimating means and the condensing lens change the light flux position of the double filament bulb that passes through the filter lens. A single lamp can exhibit two lighting colors, and a two-color lamp device that is particularly useful as a marker light for vehicles such as automobiles can be constructed.

Therefore, when configured as a marker light at the rear of a vehicle, it is possible to reduce the number of colors around the marker light at the rear of the vehicle, and it has features such as not being subject to design restrictions based on the color of the marker light. Therefore, the practical effects after implementing the present invention are extremely large.

[Brief explanation of the drawing]

Fig. 1 is an explanatory diagram showing the principle of a two-color lamp device according to the present invention, Fig. 2 is a side sectional view of the two-color lamp device showing a first embodiment implementing the principle, and Fig. 3 is a front view of the same. 4 is an enlarged sectional view of the same essential parts, FIG. 5 is a side sectional view showing the second embodiment of the two-color lamp device, FIG. 6 is a front view of the same, and FIG. 7 is an enlarged sectional view of the same essential parts. It is a diagram. 1, 1a...Double filament valve, 2,
3...Filament, 4...Fresnel lens, 4
1... Fresnel reflector, 42... Mirror surface for light reflection,
5, 5a... Condenser lens, 6, 6a... Lens step, 7, 7a... Filter lens, 8, 9
...Translucent colored part, 10, 10a...Lamp body.

Claims (1)

[Claims for Utility Model Registration] A double filament bulb having two filaments spaced apart, the filament position of the double filament bulb being provided as a substantially focal point position, for deflecting irradiated light from the filament into a substantially parallel beam of light. a light beam collimating means; a condenser lens located in front of the light beam collimating means and constituting an appropriately pitched condensing lens step; As well as being located and provided,
It is characterized by being constituted by a filter lens in which a pair of first light-transmitting color portions and second light-transmitting color portions each having a different color tone are alternately formed in correspondence with the pitch of the lens step. A two-color lamp device.