JPH0686025U - Guidelines for vehicle instruments - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a pointer for a vehicle instrument that can emit light uniformly with high brightness and can also cope with lengthening of the pointer. [Structure] A light emitting pointer main body 3 and a base portion 2 fixed to a rotation shaft of a movement. A holder portion 7 having a light source 4 is provided on the base portion, and a light introducing portion facing the light source is provided in the holder portion. A pointer main body having 3a is provided, and the pointer main body is configured by a substantially conical body having a slit 8 extending in the axial direction.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a pointer for a vehicle instrument, and more particularly to a pointer for a vehicle instrument that is disposed on a dial portion of a vehicle instrument such as an automobile and emits light at night.

[0002]

[Prior art]

 Generally, in various vehicles such as automobiles, a vehicle instrument is often used in which a pointer indicating a predetermined scale on a dial of the instrument is illuminated at night.

5 to 7 show a pointer of such a conventional vehicle instrument, for example, a pointer 1 made of a transparent material such as acrylic resin is a rotary shaft of a movement of an instrument unit (not shown). It is composed of a base 2 fixed to the base 2 and a tapered pyramid-shaped pointer main body 3 extending from the outer peripheral portion of the base 2. The upper surface of the base 2 of the pointer 1 has a base of the pointer main body 3 above. A light source 4 such as a high-intensity LED that irradiates light toward a light introducing portion 3a formed at the end is provided. A cylindrical pointer cap 5 with a ceiling is arranged above the base portion 2 so as to cover the base end portion of the pointer main body 3 and the light source 4, and the irradiation light from the light source 4 is externally provided. It is designed not to leak. Further, the light introducing portion 3a of the pointer main body 3 is formed so as to be enlarged from the base end portion of the pointer main body 3 so that a large amount of light emitted from the light source 4 enters the pointer main body 3. A reflective layer 6 is formed on the bottom surface of the main body 3 by means such as a hot stamp over the longitudinal direction.

In such a conventional pointer 1, by turning on the light source 4 at night or the like, the irradiation light from the light source 4 is emitted from the light introducing portion 3 a of the pointer main body 3 to the inside of the pointer main body 3. The irradiation light guided to the pointer main body 3 is repeatedly reflected inside the pointer main body 3 and is sent to its tip. As a result, the entire pointer body 3 is illuminated, and the pointer 1 can be visually recognized.

[0005]

[Problems to be solved by the device]

 However, in the pointer of the above-mentioned conventional vehicle instrument, since the irradiation light from the light source 4 enters through the light introducing portion 3a which is formed to be larger than the base end portion of the pointer main body 3, Some of the light entering the light introducing section 3a may escape to the outside of the pointer body 3 at the light introducing section 3a portion without being guided to the tip side of the pointer body 3 as shown in FIG. The irradiation light from the light source 4 is not efficiently guided to the inside of the pointer main body 3, so that the pointer 1 as a whole cannot be made to emit light with high brightness, and the visibility of the pointer 1 is poor.

In particular, recently, in order to improve the visibility and merchandise of a vehicle instrument, the pointer body 3 that emits light tends to be elongated, and the irradiation light from the light source 4 can be more efficiently emitted. There is a strong desire to let the light enter inside 3.

The present invention has been made in view of the above points, and proposes a pointer for a vehicle instrument that can uniformly emit light with high brightness and that can correspond to a longer pointer. It is intended to serve.

[0008]

[Means for Solving the Problems]

 In order to achieve the above-mentioned object, the pointer of the vehicle instrument according to the present invention comprises a pointer body that emits light and a base portion that is fixed to the rotation shaft of the movement, and is driven by the movement according to the measured amount. In the pointer of the measuring instrument, a holder part having a light source is provided on the base part, and a pointer main body having a light introducing part facing the light source is provided on the holder part, and a slit-shaped light transmitting part extending in the axial direction of the pointer main body. It is characterized in that it is configured by a substantially conical body provided with.

[0009]

[Action]

 According to the pointer of the vehicle instrument of the present invention, since the holder portion having the light source is provided with the substantially cone-shaped pointer main body having the slit-shaped light transmitting portion extending in the axial direction, the light emitted from the light source is emitted. Is efficiently introduced inside the pointer body, and the density of the light flux emitted from the slit is increased even at the tip side of the pointer body far from the light introduction part of the pointer body, The slit has sufficient light emission brightness from the base end to the tip, and can emit light uniformly over the entire slit.

[0010]

【Example】

 Hereinafter, an embodiment of the present invention will be described with reference to FIGS. 1 to 3 show an embodiment of a pointer of a vehicle instrument according to the present invention, the pointer 1 having a base portion 2 fixed to a rotary shaft of a movement of an instrument unit (not shown). On the base portion 2, a holder portion 7 in which a pointer body 3 and a light source 4 described later are arranged is provided. The holder portion 7 has a hollow substantially rectangular shape, and a light source 4 such as a high-intensity LED is mounted on one side surface 7a of the holder portion 7 so that the lamp portion is located inside the holder portion 7. In addition, on the other side surface 7b facing the mounting surface of the light source 4, a pointer body 3 made of a transparent material such as acrylic resin and having a substantially conical shape with a thin tip is formed. The portion is located inside the holder portion 7, and the base end surface 3a serving as a light introducing portion is mounted so as to face the light source 4.

Further, the inner surface of the holder portion 7 is formed so as to have a high surface roughness, and the irradiation light from the light source 4 is positively diffusely reflected inside the holder portion 7. ing. Further, it is preferable that the light source 4 is provided with a color such as red or amber, and the directional characteristics thereof have a narrow angle.

A slit 8 is formed on the peripheral surface of the pointer main body 3 as a light-transmitting portion extending in the axial direction of the pointer main body 3, and is attached to the slit 8 portion and the holder portion 7. Except for the base end surface 3a of the pointer body 3, the reflecting layer 9a is formed on the outer peripheral surface of the pointer body 3 by painting with high diffuse reflection efficiency, for example, white or amber-based coating. A white coating layer 9b is formed on the outside of the white coating layer 9b, and a light shielding layer 9c of black coating is formed on the outside of the white coating layer 9b. Further, on the tip surface 3b of the pointer main body 3, there is formed a reflection layer 9d having a mirror surface on the inner surface side of the pointer main body 3 by silver hot stamping, vapor deposition or the like.

Furthermore, a cylindrical pointer cap 5 with a ceiling is arranged above the base portion 2 so that the irradiation light from the light source 4 does not leak to the outside.

Next, the operation of this embodiment will be described. In the present embodiment, by turning on the light source 4, the emitted light is reflected from the inner surface of the holder portion 7 or directly from the light source 4 to the inside of the pointer body 3 from the base end surface 3 a of the pointer body 3. The introduced light is further sent to the tip of the pointer body 3 while repeatedly reflected by the reflection layer 9a on the outer peripheral surface of the pointer body 3.

At this time, since the irradiation light emitted from the light source 4 is diffused light, the light reflected by the holder portion 7 or the inner surface of the pointer main body 3 also becomes diffused light, which is reflected by the reflective layer 9 a of the pointer main body 3. A part of the reflected light is emitted to the outside of the pointer main body 3 through the slit 8 formed in the pointer main body 3. Further, since the reflecting layer 9d is also formed on the tip surface 3b of the pointer body 3, the light sent to the tip surface 3b of the pointer body 3 is reflected by the reflecting layer 9d and the base end of the pointer body 3 is reflected. Then, a part of this light is also emitted to the outside from the slit 8.

In this case, in this embodiment, the lamp portion of the light source 4 and the base end portion which is the light introducing portion of the pointer main body 3 are located inside the holder portion 7, and Since the irradiation light from the light source 4 does not escape to the outside of the holder portion 7, the irradiation light from the light source 4 is large except for the one that is attenuated by the reflection on the inner surface of the holder portion 7. The part can be efficiently introduced into the inside of the pointer main body 3 from the base end surface 3a of the pointer main body 3. Further, since the pointer main body 3 has a substantially conical shape, the distance between the reflective layer 9a on the outer peripheral surface of the pointer main body 3 and the slit 8 becomes smaller and closer to the tip side of the pointer main body 3. As a result, the density of the luminous flux emitted from the slit 8 on the tip side of the pointer main body 3 is increased. Further, since the cross-sectional shape of the pointer main body 3 is circular, the direction of the light reflected by the reflective layer 9a of the pointer main body 3 and emitted from the slit 8 is no longer specified, and the movement of the driver's eye point There is no change in the brightness of the slit 8 portion.

Therefore, the irradiation light from the light source 4 is efficiently introduced into the pointer main body 3, and the slit 8 is provided even at the tip side of the pointer main body 3 which is far from the light introducing portion of the pointer main body 3. Since the tip side does not become dark due to the higher density of the emitted light flux, the slit 8 of the pointer main body 3 has sufficient emission brightness from the base end to the tip and can be made to emit light uniformly over the whole. Therefore, it is possible to significantly improve the visibility of the pointer 1, and it is possible to sufficiently deal with the lengthening of the pointer 1.

The present invention is not limited to the above-mentioned embodiment, but can be variously modified if necessary, and as shown in FIG. 4, the base of the pointer main body 3 which is a light introducing portion. By making the end face 3a concave, the reflectance of the base end face at the peripheral edge of the base end face 3a can be lowered, and as a result, light can be introduced into the pointer body 3 more efficiently.

[0019]

[Effect of device]

 As described above, the pointer of the vehicle instrument according to the present invention is provided with the substantially cone-shaped pointer main body having the slit-shaped light transmitting portion extending in the axial direction in the holder portion having the light source. Light is efficiently introduced into the inside of the pointer body, and the density of the luminous flux emitted from the slit is high even at the tip side of the pointer body far from the light introduction part of the pointer body. The slit of the pointer body has sufficient light emission brightness from the base end to the tip, and it is possible to emit light uniformly over the whole, and it is possible to significantly improve the visibility of the finger needle and to increase the length of the pointer. It also has the effect of being able to deal with it sufficiently.

[Brief description of drawings]

FIG. 1 is a perspective view showing an embodiment of a pointer of a vehicle instrument according to the present invention.

FIG. 2 is a front sectional view of FIG.

FIG. 3 is a side sectional view of the pointer main body of FIG.

FIG. 4 is a front sectional view showing another embodiment of the pointer of the vehicle instrument according to the present invention.

FIG. 5 is a perspective view showing a pointer of a conventional vehicle instrument.

6 is a front sectional view of FIG.

FIG. 7 is a plan view showing a proximal end portion of the pointer main body of FIG.

[Explanation of symbols]

 1 pointer 2 base 3 pointer main body 3a light introduction part 4 light source 5 pointer cap 7 holder part 8 slit 9a reflective layer 9c light shielding layer

Claims (1)

[Scope of utility model registration request] 1. A pointer portion of a vehicle instrument, which comprises a main body for emitting light and a base portion fixed to a rotation shaft of the movement, and is driven by the movement according to a measured amount, wherein a holder portion having a light source on the base portion. Is provided with a pointer main body having a light introducing portion facing the light source, and the pointer main body is configured by a substantially conical body having a slit-shaped light transmitting portion extending in the axial direction. Guidelines for vehicle instruments.