JPH0590324U - Instrument pointer - Google Patents

Abstract

(57) [Summary] [Purpose] To prevent the display quality from deteriorating due to light leakage from the pointer body without reducing the amount of light reaching the tip of the pointer. [Structure] An instrument pointer 1 includes a pointer main body portion 4, a colored portion 5, a pointer shaft 6, a light shielding plate 7, and a cap 8. The pointer main body 4 has a two-layer structure including a transparent layer 4a and a light diffusion layer 4b. The transparent layer 4a is made of a transparent material such as an acrylic resin material. The transparent layer 4a is provided with a reflecting surface 9 near the pointer shaft 6 for bending incident light from the outside, that is, the light guide 3 to the pointer tip portion 1a at a substantially right angle.
The reflecting surface 9 is composed of two continuous reflecting surfaces 9a and 9b so as to increase the light collection rate of incident light on the pointer tip portion 1a. The light diffusion layer 4b is formed of a translucent coloring material having the same color as the coloring portion 5. The colored portion 5 is formed on the upper surface of the light diffusion layer 4b.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 The present invention relates to instrument pointers, more specifically to instrument pointers used for vehicle instruments and the like.

[0002]

[Prior Art]

 Conventionally, as a pointer for this type of instrument, the one described in Japanese Utility Model Laid-Open No. 2-7523 is known.

This conventional pointer for an instrument comprises a pointer main body and a colored portion adhered to the upper surface of the pointer main body. With this structure, the leakage of light from the main body of the pointer is the same as the color of light emitted from the colored portion, and the display quality (look) of the pointer is improved.

[0004]

[Problems to be solved by the device]

 However, it is generally considered that even a transparent resin material is deteriorated in translucency due to the incorporation of the fluorescent dye.

Therefore, according to the conventional instrument pointer as described above, the amount of light reaching the tip of the pointer decreases, and the brightness of the tip of the pointer becomes lower than the brightness of other points. The quality may deteriorate.

In view of the above points, the present invention has an object to prevent the deterioration of the display quality due to the light leakage of the pointer main body without causing a decrease in the amount of light reaching the tip of the pointer.

[0007]

[Means for Solving the Problems]

 In order to solve such a problem, the instrument pointer according to the present invention has a two-layer structure of a transparent layer and a light diffusion layer, and the transparent layer bends incident light from the outside to the tip of the pointer. A pointer for an instrument comprising: a pointer main body portion having a reflective surface formed thereon; and a colored portion formed on the upper surface of the light diffusion layer, wherein the light diffusion layer has the same translucent coloring as the colored portion. It is characterized by being formed of a material.

[0008]

[Function and effect of the device]

 In the instrument pointer according to the present invention, part of the illumination light that has entered the pointer from the outside reaches the pointer tip through the transparent layer of the pointer main body with almost no attenuation. Therefore, the amount of light reaching the tip of the pointer is increased, the brightness of the colored portion at the tip of the pointer is increased, and the display quality is improved.

Further, a part of the leaked light from the pointer main body becomes a leaked light from the light diffusion layer formed of the translucent coloring material having the same color as the coloring portion. Therefore, this leaked light has the same color as the emission color of the colored portion, and it is possible to prevent deterioration of display quality.

[0010]

【Example】

 An embodiment of the present invention will be described below with reference to FIGS.

As shown in FIG. 1, an instrument pointer 1 according to this embodiment can be rotated by a movement (not shown) above a light guide 3 having a dial 2 on its upper surface. It is arranged.

As shown in FIG. 5, the instrument pointer 1 includes a pointer main body portion 4, a colored portion 5, a pointer shaft 11 including a shaft portion 6 and a light shielding plate portion 7, and a cap 8.

The pointer main body 4 has a two-layer structure including a transparent layer 4a and a light diffusion layer 4b.

The transparent layer 4a is made of a transparent material such as an acrylic resin material. In the transparent layer 4a, a reflecting surface 9 that bends incident light from the outside, that is, from the light guide 3 to the pointer tip portion 1a at a substantially right angle is formed near the shaft portion 6. The reflecting surface 9 is configured to increase the light collection rate of incident light on the pointer tip portion 1a. That is, the reflecting surface 9 is composed of, for example, two continuous reflecting surfaces 9a and 9b as shown in FIG. 3 as a partially enlarged sectional view, and the light reflected by the reflecting surfaces 9a and 9b is the tip of the pointer 1a. It is configured to collect light at. In addition, the reflecting surface 9 may be formed of three or more continuous reflecting surfaces, or may be formed of a curved surface. That is, the reflecting surface 9 may be one that functions as a light converging means.

The light diffusion layer 4 b is formed of a translucent coloring material having the same color as the coloring portion 5. For example, when the colored portion 5 is red, the light diffusion layer 4b is formed of a red translucent colored material.

The colored portion 5 is formed on the upper surface of the light diffusion layer 4b by hot stamping (thermocompression bonding of stamp foil with an adhesive) or printing (screen printing of ink). The shaft portion 6 is connected to a movement (not shown). The light-shielding plate portion 7 is for preventing light from entering the rear end portion 4c of the pointer main body portion 4. The cap 8 is made of a black material and is attached to the pointer main body 4 so as to cover the side surface 4d near the shaft 6 of the pointer main body 4 to reduce light leakage of the pointer main body 4. The other reference numeral 10 in the figure represents a light source such as a bulb.

Next, the operation of the instrument pointer 1 configured as described above will be described.

The illumination light of the light source 10 is incident on the light guide body 3, passes through the light guide body 3, and is emitted from the light guide body 3.

The light emitted from the light guide 3 enters the transparent layer 4 a of the pointer main body 4 of the pointer 1. The illumination light incident on the transparent layer 4a is bent at a substantially right angle on the reflection surfaces 9a and 9b, and a part of the illumination light passes through the transparent layer 4a of the pointer main body portion 4 to the pointer tip portion 1a with almost no attenuation. To reach. Therefore, the amount of light reaching the tip 1a of the pointer is increased, the brightness of the colored portion 5 of the tip 1a of the pointer is increased, and the display quality is improved.

As shown in FIG. 2, a small part of the illumination light that has entered the transparent layer 4 a of the pointer main body 4 passes through the light diffusion layer 4 b formed of a translucent coloring material having the same color as the coloring portion 5. Leaks to the outside. Since the light diffusion layer 4b is formed of the light-transmitting coloring material having the same color as the colored portion 5, this light leakage has the same color as the light emission color of the colored portion 5, and it is possible to prevent the deterioration of the display quality. ..

[Brief description of drawings]

FIG. 1 is a cross-sectional view taken along line II in FIG. 4 for showing the instrument pointer and its peripheral structure according to an embodiment.

FIG. 2 is a sectional view taken along line II-II shown in FIG.

FIG. 3 is an enlarged view of a main part in FIG.

FIG. 4 is a perspective view of a pointer for the instrument.

FIG. 5 is an exploded perspective view of the pointer for the instrument.

[Explanation of symbols]

 1 Instrument pointer 1a Pointer tip 4 Pointer body 4a Transparent layer 4b Light diffusion layer 5 Colored part 9 Reflective surface 9a, 9b Reflective surface

Claims (2)

[Scope of utility model registration request] 1. A pointer main body having a two-layer structure of a transparent layer and a light diffusing layer, the transparent layer having a reflecting surface for bending incident light from the outside to a pointer tip, A colored pointer formed on the upper surface of the diffusion layer, and a pointer for a measuring instrument, wherein the light diffusing layer is formed of a translucent coloring material having the same color as the colored portion. . 2. The reflective surface according to claim 1,
An instrument pointer, comprising a condensing means for increasing a condensing rate of incident light to a tip portion of the pointer.