JPH0540417Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Field of Application] The present invention relates to a lighting device for a vehicle instrument, and more particularly to a lighting device for an instrument that makes the day/night display of an integration car effective.

[Conventional technology]

A conventional illumination mechanism for a mileage totalizer in this type of meter has a structure as shown in FIGS. 3 to 5, for example. That is, 1 is the meter panel, and this meter panel 1 is formed with a window 3 for seeing through the dial plate 2 of each instrument, and furthermore, this dial plate 2 is provided with a window 3 for allowing the meter wheel 4 of the meter to be seen through. A window 5 is formed. As the illumination means for the integration car 4, a lighting bulb 7 is installed in the lower housing 6 attached to the back side of the meter panel 1, and the light from this lighting bulb 7 is guided to the integration car 4 via a light guiding member 8. ing. The configuration of this integration wheel 4 is as shown in FIGS. 4 and 5, and the integration wheel itself is formed of a transparent light guide, and the light guide member 8
It has a light incident reflection section 4a that receives light emitted from the vehicle and guides it to the integrating vehicle circumferential surface, and the integrating vehicle circumferential surface is further provided with a numerical display 4b made of light-shielding ink.

[The problem that the idea aims to solve]

However, in the case of the lighting structure of such a conventional totalizer, the structure for guiding light inside the totalizer is complicated, and furthermore, the use of a light guide member increases the product cost. There was a problem.

[Means to solve the problem]

The present invention was devised to solve these conventional problems, and involves displaying numbers on the surface (circumferential surface) of an ordinary totalizing wheel that does not have a light guiding function using paint or ink that can be seen with visible light. A transparent ink layer that emits light when excited by ultraviolet light is formed on the surface of the numerical display, and during the daytime, the numerical display is displayed using visible light, and at night, it is exposed to ultraviolet light from an ultraviolet light emitting light source. Therefore, it is an object of the present invention to provide a lighting device for an instrument, which has a simple structure and can provide effective day/night display by exciting the above-mentioned transparent ink layer to emit light.

〔Example〕

The present invention will be explained in detail below based on the embodiment shown in FIGS. 1 and 2.

10 is a display surface of the instrument, and this display surface is composed of a meter panel 14' and a dial 18, which will be described later. Reference numeral 11 indicates a lower housing made of resin such as ABS or PP, 12 indicates an instrument body mounted within the lower housing 11, and 13 indicates an integration wheel of an integration meter.

Reference numeral 14 denotes a resin upper housing similar to the above, which is attached to the front surface of the lower housing 11.
This Atsupa housing 14 has a dial transparent window 15.
is formed, and inside this transparent window 15,
A dial 18 is attached to a pointer shaft 16 of the meter machine body 12 to indicate the indicated value of a pointer 17. 14' is the front (front) of Atsupa housing 14
The front surface of the meter panel 14' and the front surface of the dial 18 are coated with transparent paint mixed with a fluorescent pigment that is excited and emits light when exposed to ultraviolet light. Layer 19 has been applied. The paint forming this paint layer 19 is, for example, a mixture of a base resin such as ink or paint and an oxide or sulfide phosphor, and preferably a sulfide phosphor with good light resistance is used. 20
In order to read the indicated value by the above-mentioned integration wheel 13,
A totalizer display window is bored in the dial 18, 21 is a transparent front cover attached to the front of the Atsupa housing 14, 22 is a transparent front cover installed in front of the Atsupa housing 14, and the above This is an ultraviolet light emitting lamp for exciting the paint layer 19 to emit light. Further, the configuration of the above-mentioned integration wheel 13 is such that, as shown in FIG.
The numbers 13b up to 0 are applied with a colored paint or colored ink that can be seen with visible light, for example, by printing means, and then a transparent layer similar to the above-mentioned paint layer 19 that is excited and emits light when exposed to ultraviolet light (365 mm) is then applied to the upper surface of the number 13b. The ink layer 13c is formed in the same manner as the number features described above.

The configuration of this embodiment has been described above. Next, the operation will be described. It is well known that the detected value is indicated by the operation of the instrumentation machine 12, and is no different from the conventional operation. This instrument machine body 12
A display screen 10 and a totalizing wheel 1 provided at the front of the
The displayed value of 3 is determined by the paint layer 19 applied to the surface of the display surface 10 and the integrated value by reflected illumination from outside light during the day, and by lighting the ultraviolet light emitting lamp 22 at night. Since the transparent ink layer 13c on the surface of the car 13 is excited and emits light, effective display can be performed day and night. Note that this excitation emission color can be selectively changed depending on the amount of phosphor blended or the type of phosphor.

[Effect of idea]

Therefore, according to this instrument illumination device, the display surface of the instrument and the totalizing wheel 13 can be seen with visible light during the day, and at night, by lighting the ultraviolet lamp 22, the display surface of the instrument and the totalizing wheel 13 can be seen with a predetermined luminescent color. Since the LED is excited and emits light, excellent display performance can be obtained day and night. Especially for this idea,
A transparent ink layer 13c that is excited to emit light when exposed to ultraviolet light is provided on the circumference of the counting wheel, and in a dark place, the transparent ink layer 13c is excited and emitted light by ultraviolet light from an ultraviolet lamp. Since the integration wheel in the conventional totalizer can be used as is, and there is no need to provide a complicated integration wheel illumination mechanism unlike the conventional one, an inexpensive meter can be provided.

[Brief explanation of the drawing]

Fig. 1 is a vertical cross-sectional view showing an embodiment of the instrument lighting device according to the present invention, Fig. 2 is a side explanatory view of only the integration vehicle according to the present embodiment, Fig. 3 is an explanatory view of the conventional example, and Fig. 4 is an explanatory view of the conventional example. The figure shows a side view of a conventional totalizing vehicle.
The figure is a partially cutaway sectional view. 10...Display surface, 11...Lower housing, 1
2...Instrument machine body, 13...Installation vehicle, 14...Atsupa housing, 14'...Meter panel, 15
...See-through window, 16... Pointer shaft, 17... Pointer, 1
8... Dial board, 19... Paint layer, 20... Totalizer display window, 21... Front cover, 22... Ultraviolet lamp.

Claims (1)

[Scope of utility model registration request] A transparent paint layer 19 mixed with a fluorescent pigment that is excited and emits light when exposed to ultraviolet light is coated on at least a part of the surface of a non-transparent display panel 10 installed in the instrument case 11, and the display panel A light source 21 that emits ultraviolet rays to excite the fluorescent pigment to emit light is provided in front of the display surface 10, and a totalizer display window 20 is provided in a part of the display surface 10. Behind the surface 10, display characters 13b are displayed on the surrounding surface.
is printed with ink that is visible under visible light, and further has a transparent ink layer 13c on its outer surface that emits light when excited by ultraviolet rays.
A lighting device for an instrument, characterized in that a plurality of integration wheels 13 on which are printed are arranged.