JP2885244B2 - Light emission guide - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a light emitting pointer applied to an instrument of a vehicle such as an automobile or a motorcycle, and more particularly, to a pointer cap which is cut along a pointer shaft from a front end to a rear end of a pointing portion. The present invention relates to an entire surface light emission guideline that emits light without light.

[0002]

2. Description of the Related Art FIG. 10 shows a prior art of this kind of a general light emitting guideline. That is, the entire surface light emitting pointer is made of a transparent resin material such as acryl or polycarbonate, and has an indicator 1 and a pointer base 2 extending linearly.
And The indicator 1 is illuminated by receiving illumination light from an external light source (not shown) from below the pointer base 2. The pointer base 2 is provided with a reflecting portion 2a having a converging point P1 on the distal end side of the indicating portion 1 and a reflecting portion 2b having a converging point P2 on the rear end side of the indicating portion 1. The illumination light is reflected and supplied to the front end side and the rear end side of the indicating section 1 by 2b, so that the indicating section 1 emits light linearly. In this case, the pointer base 2 having the reflecting portions 2a and 2b is covered with a black pointer cap made of a light-shielding synthetic resin (not shown). In this case, the pointer cap does not cover the front surface of the pointing unit 1. As a result, the indicator 1 can be continuously emitted from the front end to the rear end thereof through the pointer shaft (not shown) without being divided by the pointer cap.

[0003] Incidentally, in such a full surface light emitting pointer, an unillustrated pointer seat made of light-shielding black synthetic resin is provided behind the pointer base 2 including the reflecting portions 2a and 2b to cover this part. A structure is used in which a light transmitting portion made of a through hole is formed at a position corresponding to each of the reflecting portions 2a and 2b of the pointer seat, and the indicator 1 is caused to emit light only by the illumination light supplied through the light transmitting portion. May be done. According to such a structure, the light transmitting portion (the reflecting portion 2a,
There is an advantage that supply of illumination light from sources other than 2b), that is, unnecessary introduction of illumination light to the light emitting pointer can be suppressed.

[0004]

However, the pointer seat is applied to the entire surface light-emitting pointer covered with the pointer cap, and the illumination of the indicator 1 is performed only by the illumination light supplied to each of the reflectors 2a and 2b. In this case, the regions R1 and R3 on the front end side and the rear end side from the vicinity of the light condensing points P1 and P2 are located at the respective reflection portions 2a,
Although there is a light-emitting surface on the optical path analysis by 2b, light is emitted brightly. However, the pointer base region R2 has no light-emitting surface on the optical path analysis, is darker than the regions R1 and R3, and uniform light emission is obtained. There is no problem.

Therefore, the inner surfaces of the pointer cap and the pointer seat are colored white, and the supplied illumination light is diffusely reflected in a space inside the pointer cap formed by the pointer cap and the pointer seat. The pointer base region R2 is changed to each region R
1 and R3, and a structure in which the indicator 1 emits light uniformly is adopted. However, it is not easy to color the inner surface of the pointer cap or the pointer seat, which is a small and complicated shape, in a white color.Complicated work is required to accurately color the pointer cap and productivity is not improved. Had.

[0006] The present invention has been made in view of this point,
It is a main object of the present invention to provide an entire surface light emitting guide that is easy to manufacture, has good productivity, and can emit light almost uniformly from the front end side to the rear end side of the indicator.

[0007]

According to the present invention, in order to achieve the above object, the indicator is exposed to a pointer body integrally formed with a linear indicator and a pointer base having a light receiving portion, and a pointer cap is covered. Fitting, the illumination light from the light source is guided to the indicator through the light receiving unit, and the entire surface of the indicator that emits light from the front end to the rear end of the indicator is white in the pointer cap. And a white reflecting member is disposed on a pointer seat disposed on the lower surface side of the pointer main body, and the pointer main body is covered with the reflection cap and the reflecting member.

In addition, the indicator and the light receiver are exposed on a pointer body integrally formed with a linear indicator and a pointer base having a light receiver, and are covered with a pointer cap and a pointer seat. Guiding light to the indicating unit through the light receiving unit,
In a full-surface light-emitting pointer that emits light from the front end side to the rear end side of the pointing unit, a white reflective cap that covers the inside of the pointer cap is provided in the pointer cap, and is disposed on the lower surface side of the pointer main body. A white reflecting member is provided on the pointer seat.

In addition, the indicator is exposed on a pointer body integrally formed with a linear indicator and a pointer base having a light receiver, and a pointer cap is fitted thereto. Illumination light from a light source passes through the light receiver. A light guide from the front end to the rear end of the indicator, the pin cap is provided with a pin-shaped mounting portion, and the pointer cap is provided inside the pointer cap. A white reflective cap is disposed to cover the pointer body, a white reflective member is disposed on the pointer seat disposed on the lower surface side of the pointer main body, and the mounting portion penetrates through the reflective cap and the pointer seat. Project from the bottom of the
The mounting portion is welded and fixed.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION A white reflective cap 15 for covering the inside of a pointer cap 5 is provided in the pointer cap 5, and light receiving parts 2c and 2d are formed on both sides of the pointing part 1, and a lower surface of the pointer body 3 is formed. A white reflecting member is provided on the pointer seat 9 which is a light shielding member disposed on the side.
Since the indicator 12 is disposed on the pointer seat 9 via the reflecting member 12 and the light receiving units 2c and 2d are exposed from the pointer seat 9, the light is introduced from the light receiving units 2c and 2d. Since the illuminating light is diffused by the reflection cap 15 and the reflection member 12, insufficient light emission brightness on the front surface of the indicator 1 near the pointer base 2 is compensated.
The light emission luminance of the entire indicator 1 is made uniform. Also, by providing the reflection cap 15 and the reflection member 12 as separate members,
Manufacturing is facilitated and productivity is improved.

[0011]

Embodiments of the present invention will be described below with reference to the accompanying drawings. The same and corresponding parts as those in the conventional example are denoted by the same reference numerals, and detailed description thereof will be omitted.

The pointer body 3 is made of a light-transmitting resin material such as acrylic or polycarbonate. Immediately before the pointer base 2, the coloring layer 4 is formed by printing using a hot stamp or the like. In particular, on the front surface of the indicating portion 1, the peripheral portion 1a is rounded so that light does not leak from a boundary with a pointer cap 5 described later, and the colored layer 4 is formed so as to wrap around the rounded peripheral portion 1a. . On both sides of the pointer base 2, light receiving sections 2c and 2 receive illumination light from a light source (not shown) on the lower surface side.
and a plurality of reflectors 2a and 2b for reflecting the illumination light received by the light receiving units 2c and 2d and continuously emitting light from the front end side to the rear end side of the pointing unit 1 are formed.

The reflecting portions 2a and 2b are condensing portions P at which the illumination light reflected on the front end side and the rear end side of the pointing portion 1 are collected.
1 and P2, and supplies the reflected light to the front end side and the rear end side of the pointing unit 1 to cause the pointing unit 1 to emit light. The periphery of the pointer base 2 including the reflecting portions 2a and 2b is covered with a pointer cap 5 made of black synthetic resin that exposes the front surface of the indicator 1, and the linear design of the indicator 1 that emits light is used. It is not divided.

A concave portion 6 is provided on the side of the indicator 1 beyond the pointer base 2 from the rear end side of the pointer main body 3. The convex portion 5a of the pointer cap 5 matches the concave portion 6.
On the back surface of the pointer base 2 of the pointer main body 3, a hollow portion 7, which is a space portion for preventing sink marks, is formed. In the drawing, reference numeral 8 denotes a flange portion for mounting the pointer cap 5, and a pin-shaped mounting portion 5b of the pointer cap 5 is fixed to the flange portion 8 by means such as welding. In addition, the pointer main body 3 having such a configuration is mounted on a pointer seat 9 described later on the back surface of the pointer base 2 and is connected to a pointer shaft (not shown).

The pointer seat 9 covers the back of the pointer base 2 of the pointer main body 3 and places the pointer main body 3 thereon. And a cylindrical mounting portion 11 for press-fitting and connecting with the pointer main body 3. The pedestal portion 10 is provided with a reflective member 12 made of a white synthetic resin on the upper surface. The reflecting member 12 is formed so as to cover the upper surface of the pedestal portion 10 except for a portion corresponding to the flange portion 8 for mounting the pointer cap 5. The reflecting member 12 is provided with a mounting pin 12a for fixing a weight 13 for pointer balance. The weight 13 is mounted on the mounting pin 12a, and the mounting pin 12a is fixed by welding.

The pedestal portion 10 of the pointer seat 9 has a pointer body 3
A light transmitting portion 10a made of a through hole is formed at a position corresponding to each of the light receiving portions 2c and 2d, and a notch is also formed at the reflecting member 12 at a position corresponding to the light receiving portions 2c and 2d of the pointer main body 3. A part 14 is formed. This notch
Reference numeral 14 denotes a portion corresponding to the above-described flange portion 8 and the light receiving portion 2
It is formed so as to correspond to c and 2d. The light receiving portions 2c and 2d of the pointer main body 3 match the light transmitting portion 10a and the cutout portion 14, face the lower surface of the pedestal portion 10, and are exposed from the pointer seat 9.

The pointer cap 5 is divided into left and right parts so as to cover the pointer base 2 and has a connecting part 5c connected at the rear end side of the pointing part 1. The pointer cap 5 is provided with convex portions 5a on the left and right sides of the pointer cap 5, respectively, which correspond to the concave portions 6 on the side surface of the pointing portion 1 described above.
d is continuous with the step 5e provided in the connecting portion 5c.
The pointer cap 5 has the above-mentioned pin-shaped mounting portion 5b protruding downward on the inner surface thereof.

The pointer cap 5 has left and right reflection caps 15 made of a white synthetic resin. The reflection cap 15 is attached to the mounting portion 5 of the pointer cap 5.
b has a through-hole 15a through which it passes. Thus, the mounting portion 5b is provided on the pointer cap 5 without providing the pin-shaped mounting portion 5b on the reflection cap 15, and the mounting portion 5b is passed through the through hole 15a of the reflection cap 15, and the pedestal of the pointer seat 9 is provided. When the mounting portion 5b is projected and fixed to the lower surface of the portion 10 by welding, when the illumination light is supplied from behind the hands because the mounting portion 5b is black, the supplied light is reflected by the lower surface of the pedestal portion 10 and a dial (not shown) This prevents the upper part from shining. This is because when the mounting portion 5b is formed on the reflection cap 15, the white reflection cap 15 deformed by welding on the lower surface of the pedestal portion 10 is formed.
This is because the supply light is reflected by the mounting portion 5b, and the dial plate shines.

When the pointer main body 3 is assembled to the pointer cap 5, the concave portion 6 of the pointer main body 3 matches the convex portion 5a of the pointer cap 5. That the concave portion 6 and the convex portion 5a match,
The coloring layer 4 provided on the front surface of the indicator 3 of the pointer body 3 described above.
Is in contact with the pointer cap 5, it is possible to prevent light from leaking from the boundary between the pointer 1 and the pointer cap 5.

When the pointer body 3, pointer cap 5, reflection cap 15, reflection member 12, and pointer seat 9 are assembled,
The pointer body 3 is covered with the pointer cap 5, the reflection cap 15 in the pointer seat 9, and the reflection member 12.

When the light source is turned on, the illuminating light passes through the light receiving portions 2c and 2d of the pointer seat 9 and the pointer body 3
The illumination light introduced into the pointer body 3 is reflected by the reflecting portions 2a and 2b toward the respective light collecting portions P1 and P2 of the pointing portion 1 as described above, and is mainly reflected by the respective light collecting portions. P1, P2
The light is reflected and supplied to the front end side and the rear end side to make these portions emit light.

On the other hand, the supply light diffused by the reflection cap 15 and the reflection member 12 is diffused and supplied to the front of the pointer 1 near the pointer base 2, and is mainly directed to the pointers sandwiched by the light collectors P1 and P2. Light is emitted in the vicinity of the pointer base 2.

Therefore, the indicator 1 emits light continuously from the front end to the rear end. At this time, each light condensing part P of the indicator 1 having a light emitting surface on the optical path analysis by each of the reflecting parts 2a and 2b.
1, near the pointer base 2 of the indicating unit 1 having no light emitting surface on the optical path analysis, similarly to the front end side and the rear end side of P2.
Similar light emission luminance can be obtained.

Accordingly, the pointer base 2 of the pointing unit 1 as described above.
The insufficient light emission luminance in the vicinity is compensated by the reflection cap 15 and the reflection member 12.

As described above, according to the present embodiment, the instruction unit 1
The illumination light introduced behind the pointer base 2 of the
Since the light is diffused and supplied to the front side of the indicating section 1 by the reflection member 12, insufficient light emission in the vicinity of the pointer base 2 of the indicating section 1 sandwiched between the light collecting sections P1 and P2 can be compensated. The entire part 1 can be made to shine substantially uniformly.

Further, as in this embodiment, in order to irregularly reflect the supplied light in the space surrounded by the pointer cap 9 and the pointer cap 5, separate components such as the reflection cap 15 and the reflection member 12 are provided instead of the coating. Thereby, it is possible to easily manufacture the entire surface light emitting pointer in which the entire indicator 1 shines uniformly.

In this embodiment, the peripheral portion 1a is rounded on the front surface of the pointing portion 1 so that light does not leak from a boundary with a pointer cap 5 described later. The peripheral portion 1a does not necessarily have to be rounded, and the peripheral portion 1a may be an inclined surface.

[0028]

As described in detail above, according to the present invention,
It is possible to provide a light-emitting pointer that is easy to manufacture and that can compensate for the lack of light emission in the pointer base region of the indicator so as to emit light from the front end to the rear end of the indicator substantially uniformly.

[Brief description of the drawings]

FIG. 1 is an exploded cross-sectional view of an embodiment of the present invention, with a portion cut away.

FIG. 2 is a top view of the entire surface light emitting pointer of the embodiment.

FIG. 3 is a top view of the pointer body of the embodiment.

FIG. 4 is a top view of the pointer cap of the embodiment.

FIG. 5 is a side view of the entire surface light emitting pointer of the embodiment.

FIG. 6 is an exploded explanatory view of the embodiment as viewed from the back.

FIG. 7 is a rear view in which a reflecting cap is assembled to the pointer cap of the embodiment.

FIG. 8 is an exploded cross-sectional view taken along line AA in FIG. 2 of the embodiment.

FIG. 9 is a sectional view of the embodiment, in which the pointer cap, the reflection cap, and the pointer main body are cut along the line AA in FIG. 2;

FIG. 10 is a top view showing a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Pointer 2 Pointer base 2c, 2d Light receiver 3 Pointer body 4 Colored layer 5 Pointer cap 9 Pointer seat 12 Reflecting member 15 Reflecting cap

──────────────────────────────────────────────────続 き Continued on front page (58) Field surveyed (Int.Cl. ⁶ , DB name) G01D 13/28 G01D 11/28

Claims (3)

(57) [Claims] 1. A pointer body is integrally formed with a linear pointing portion and a pointer base having a light receiving portion. The pointing portion is exposed and a pointer cap is fitted thereto. Illumination light from a light source passes through the light receiving portion. In the entire light emitting pointer, which guides the light to the indicating portion and emits light from the front end side to the rear end side of the indicating portion, a white reflective cap is provided inside the pointer cap, and the lower surface side of the main body of the pointer is provided. A white light reflecting member is disposed on a pointer seat disposed on the pointer, and the pointer main body is covered with the reflection cap and the reflecting member. 2. A pointer body in which a linear pointing portion and a pointer base having a light receiving portion are integrally formed, the pointing portion and the light receiving portion are exposed, covered with a pointer cap and a pointer seat, and illuminated by a light source. In the entire light emitting pointer, which guides light to the indicator through the light receiving unit and emits light from the front end to the rear end of the indicator, a white reflection covering the inside of the pointer cap is provided in the pointer cap. An entire light emitting pointer, wherein a cap is disposed, and a white reflecting member is disposed on the pointer seat disposed on a lower surface side of the pointer main body. 3. An indicator body is integrally formed with a linear pointing part and a pointer base having a light receiving part. The pointing part is exposed and a pointer cap is fitted thereto. Illumination light from a light source is transmitted through the light receiving part. A light guide from the front end to the rear end of the indicator, the pin cap is provided with a pin-shaped mounting portion, and the pointer cap is provided inside the pointer cap. A white reflective cap is disposed to cover the pointer body, a white reflective member is disposed on the pointer seat disposed on the lower surface side of the pointer main body, and the mounting portion penetrates through the reflective cap and the pointer seat. The whole surface light emitting pointer, wherein the mounting portion is welded and fixed to the lower surface of the light emitting device.