JPH0720572Y2 - Light introduction structure of instrument - Google Patents

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial field of application) The present invention relates to a structure of a light introducing portion of a meter applied to a self-luminous pointer type meter for automobiles and the like.

(Prior Art) A self-luminous pointer-type meter for automobiles is known in which the pointer itself is caused to emit light by the light of a light source in order to make the meter easy to see during night driving. In this meter, as shown in FIG. 3 and FIG. 4, for example, a first internal unit 120 such as a drive mechanism is provided on the back side of the first dial 100 and the second dial 110.
And a second internal unit 130 are provided, and these internal units 12
Light bulbs 140a, 14a are provided between 0 and 130 and outside, respectively.
0b and 140c are arranged. In addition, the first light guide plate made of transparent acrylic resin or the like is provided on the back surface of each dial 100, 110.
150 and the second light guide plate 160 are arranged, and each light guide plate 15
Light introducing portions 151a, 151b, 161a, 161b are formed at 0 and 160 so as to approach the respective illumination bulbs 14a to 140c.

When lighting the lighting bulbs 140a to 140c,
Lights 0a to 140c are introduced from the light introducing portions 151a, 151b, 161a, 161b, and the first and second dial plates 100, 110 are repeatedly reflected while being totally reflected in the first and second light guide plates 150, 160. Reaches the inside of the first pointer 170 and the second pointer 180 arranged on the surface side of
The first and second pointers 170 and 180 are made to emit light.

(Problems to be Solved by the Invention) In the above self-luminous pointer type meter, the lighting bulb 140a is provided in the first internal unit 120 due to the wiring pattern of the wiring board 190 and the like.
It is rare to arrange it in the center between the second inner unit 130 and the second inner unit 130, and as shown in FIG. 4, for example, it is arranged closer to the first inner unit 120, that is, in the inner position of the first dial 100. There are many.

Therefore, as shown in FIG. 5, the second light guide plate 160 is
Since the light is received from the illumination bulb 140a, the light introducing portion 16a
The shape of 1a extends beyond the first dial 100 side. Therefore, the second light guide plate 160 and the second internal unit 130
In the assembled component state (the assy state) in which is incorporated into the second dial 110, the light introducing portion 161a protrudes from the second dial 110 and becomes bulky, and the light introducing portion 161a is damaged during its handling. You have to be careful not to do this, and there is a problem that it takes time to manage parts.

In addition, when the first dial plate 100, the first inner unit 120, and the first light guide plate 150 are assembled into the meter case 200, the second light guide plate 160 receives light after the assembled parts are assembled. Part 1
Since 61a hits the first dial 100, it cannot be assembled (see FIG. 5). For this reason, first, an assembly part in which the second dial 110, the second internal unit 130, and the second light guide plate 160 are assembled is incorporated into the meter case 200, and then the first dial 100 and the first internal unit 120. , The first light guide plate 150 had to be assembled. Further, for example, an assembly part in which the first dial 100, the first inner unit 120, and the first light guide plate 150 are assembled, the second dial 110, the second inner unit 130, and the second light guide plate 160 are provided. There is a problem that the order of assembling cannot be freely set, such as assembling the assembled assembly parts into the meter case 200 at the same time, and it has been difficult to improve the assembly work efficiency.

The present invention solves the above-mentioned conventional problems, and an object thereof is to provide a light introduction part structure of an instrument which does not require time and effort for parts management and can improve assembly work efficiency. That is.

[Means for Solving the Problems] (Means for Solving the Problems) In order to achieve the above-mentioned object, the structure of the light introducing portion of the instrument of the invention is such that the first dial (10) and the first dial (10) A second dial (11), which is separate from the dial (10), is provided adjacent to the dial (10), and the first dial (10) and the second dial (11) are respectively provided with the second dial (11). A first light guide plate (40) and a second light guide plate (41) separate from the first light guide plate (40) are provided along the back surface, and the first light guide plate (40) is provided. Is a first light introducing section (40) extending toward the light source (51) located on the back surface side of the first dial (10).
0) and extends from the light source (51) to the edge of the first dial (10), and has a light emitting surface (401a) at the side edge of the first dial (10). The second light guide plate (4) integrally has an exposed second light introducing section (401).
1) has a light introducing surface (410a) located at a side edge portion of the second dial (11) and facing a light emitting surface (401a) of the second light introducing portion (401). It is characterized by being.

(Operation) In the present invention, (a) a part of the light emitted from the light source (51) is guided from the first light introducing section (400) into the first light guide plate (40), for example, the first light guide plate (40). The pointer of the dial (10) can be illuminated, and (b) the other part of the light emitted from the light source (51) is emitted from the second light introducing section (401) to the light emitting surface (401a). From the light emitting surface (401a) into the light introducing surface 410a of the second light guide plate (41) and then through the second light guide plate (41) to, for example, the second dial (11). Can be illuminated, and (c) the light emitting surface (401a) and the light introducing surface (410a) are close to each other. Light can be efficiently moved to the first dial plate (10) as the first light introducing part (400) and the second light introducing part (401). ), The first dial ( From the 10) side to the second dial (1
The first light guide plate (40) does not extend to the first dial plate (10) or the second dial plate (11) side to the first dial plate (10) side. ) Is provided or the second dial plate (11) is provided with the second light guide plate (41), the light introducing section (400, 401) does not become bulky, and Since the introduction part (400, 401) does not protrude from the first dial plate (10) or the second dial plate (11), be especially careful not to damage the light introduction part (400, 401). You do not have to pay, you can manage the parts easily, and (f) the light introducing part (400, 401) is out of the first dial (10) or the second dial (11). Since there is no first dial plate (10) having the first light guide plate (40)
When assembling the second dial plate (11) having the second light guide plate (41) into the meter case 60, the order of incorporation can be freely set.

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

1 and 2 show one embodiment of the present invention,
FIG. 1 is a partial cross-sectional view of an automobile instrument adopting the light introducing portion structure of the present invention, and FIG. 2 is a partial enlarged view of a first light guide plate. In the figure, reference numeral 10 is the first dial, 11 is the second dial,
20 is the first pointer, 21 is the second pointer, 30 is the first internal unit, 31
Is a second internal unit, 40 is a first light guide plate, 41 is a second light guide plate,
Reference numerals 50, 51 and 52 are illumination valves as light sources. The first and second inner units 30, 31 are drive mechanisms for driving the first pointer 20 and the second pointer 21, respectively. The first and second light guide plates 40 and 41 are made of acrylic resin or the like having excellent light transmittance.

A first pointer 20 is provided on the front side of the first dial 10, and a first inner unit 30 and a first light guide plate 40 are provided on the back side of the first dial 10. It is the first assembly part A. Also, in the same way, the second dial 11 on the front side of the second dial 11
Of the second dial 11 and a second inner unit 31 and a second light guide plate 41 on the back side of the second dial 11.
Assembly part B of

The first and second assembly parts A and B are arranged such that the first and second dials 10 and 11 are adjacent to each other,
It is installed at a predetermined position in the meter case 60.
In this meter case 60, the lighting bulbs 50, 51, 52 are
Between the first and second internal units 30, 31 (close to the first internal unit 30)
And, it is equipped so as to be located outside the first and second inner units 30, 31.

These points are not particularly different from the conventional measuring instrument shown in FIGS. 3 and 4. According to this invention, it is easy to manage the parts of the first and second assembly parts A and B,
Further, it is characterized in that the assembly parts A and B can be freely incorporated into the meter case 60.

That is, as shown in FIG. 1, the illumination bulb 51 is located on the back surface side of the first dial plate 10, and the first light guide plate 40 is provided.
In addition, the lighting bulb 51 is bent at the back surface of the first dial 10.
A first light introducing portion 400 extending toward the is provided. Then, in the first light introducing section 400, the illumination bulb 5
This first dial 1 extends from 1 to the edge of the first dial 10.
The second light introducing portion 401 with the light emitting surface 401a facing the side edge portion of 0 is integrally formed. The first and second light input parts 400 and 401 are connected to only the part where the light enters from the illumination bulb 51 and are formed in a substantially V shape. This is an acrylic resin excellent in light transmittance. It is formed by molding at the same time. However, these first and second light introducing portions 400 and 401 may be integrally formed by fixing them by means such as adhesion. Further, the second light introducing portion 401 extends to the peripheral portion of the first dial plate 10 but does not project from this peripheral portion.

Further, the second light guide plate 41 includes the first and second assembly parts A,
When B is incorporated in the meter case 60, the light introducing surface 410a is located at the side edge portion of the second dial 11 and closely faces the light emitting surface 401a. In addition,
In FIG. 1, a wiring board 70 has a wiring pattern for supplying power to the illumination bulbs 50, 51 and 52. Further, the first light guide plate 40 is provided with another light introducing portion 40a that is close to the illumination bulb 50 located outside the first inner unit 30, and the second light guide plate 4 is provided.
Another light introducing section 41a is provided in the unit 1 so as to approach the illumination bulb 52 located outside the second inner unit 31.

In the instrument configured as above, the lighting bulb 5
When 0, 51 and 52 are turned on, the light emitted from the illumination bulb 50 enters the first light guide plate 40 from the light introducing portion 40a and is guided to the first pointer 20. Part of the light emitted from the lighting bulb 51 is
The light enters the first light guide plate 40 from the first light introducing section 400 and is guided to the first pointer 20. The other part of the light emitted from the illumination bulb 51 is emitted from the second light introduction part 401 to the light emission surface 401a.
And enters the light introducing surface 410a from the light emitting surface 401a,
It is guided to the second pointer 21 through the inside of the second light guide plate 41.
Further, the light emitted from the illumination bulb 52 enters the second light guide plate 41 from the light introducing portion 41a and is guided to the second pointer 21.

Therefore, according to the instrument configured as described above, from the first dial 10 side to the second dial 11 side or the second dial 11 side,
From the dial 11 side to the first dial 10 side, the first light guide plate 40
Alternatively, since the light introducing portion of the second light guide plate 41 does not protrude, it does not become bulky in the assembled parts A and B state, and even if no particular care is taken to prevent the light introducing portion from breaking. The parts management becomes easy.

Also, the meter case of the first and second assembly parts A and B
It is possible to freely set the order of incorporation into 60.
That is, incorporating the first assembly part A and then the second assembly part B, or the second assembly part B and then the first assembly part A, or the first and second assembly parts. It becomes possible to incorporate the parts A and B at the same time.

Further, since the light emitting surface 401a and the light introducing surface 410a are close to each other, the light can be efficiently moved from the light emitting surface 401a to the light introducing surface 410a.

Further, since the second light introducing section 401 is provided on the first dial 10 side, the space C below the light introducing surface 410a of the second light guide plate 41 becomes large, and the same space C is formed. It is possible to make the most effective use.

In addition, in the above-described embodiment, the lighting valve is provided near the first internal unit 30.
Although the case where 51 is arranged is shown, the case where the illumination bulb 51 is arranged near the second inner unit 31 may be used. However, in this case, the first light introducing section 400 and the second light introducing section 401 are provided on the second light guide plate 41 side. That is, the first assembly part A and the second assembly part B may be replaced with each other, and, for example, when the third assembly part C is provided adjacent to the second assembly part B, Second assembly part B
Corresponds to the first assembly part A, and the third assembly part C is the second
It is possible to apply the above-mentioned embodiment, considering that it corresponds to the assembly parts of.

[Advantages of the Invention] As described above, according to the present invention, (a) a part of the light emitted from the light source (51) is transmitted from the first light introducing section (400) to the first light guide plate (40). It is possible to illuminate the pointer of the first dial (10) by being guided inside, and (b) the other part of the light emitted from the light source (51) is the second light introducing section (401). From the light emitting surface (401a) to the inside of the light introducing surface 410a of the second light guide plate (41), passing through the inside of the second light guide plate (41), for example, Since the pointer of the second dial (11) can be illuminated, and (c) the light emitting surface (401a) and the light introducing surface (410a) are close to each other, the second light introducing portion (401) The light can be efficiently moved from the second light guide plate (41) to the second light guide plate (41), and (d) the light introducing section includes the first light introducing section (400) and the second light introducing section (401). As inward of the first dial (10) The second dial (1) from the side of the first dial (10).
The first light guide plate (40) does not extend to the first dial plate (10) or the second dial plate (11) side to the first dial plate (10) side. ) Is provided or the second dial plate (11) is provided with the second light guide plate (41), the light introducing section (400, 401) does not become bulky, and Since the introduction part (400, 401) does not protrude from the first dial plate (10) or the second dial plate (11), be especially careful not to damage the light introduction part (400, 401). You do not have to pay, you can manage the parts easily, and (f) the light introducing part (400, 401) is out of the first dial (10) or the second dial (11). Since there is no first dial plate (10) having the first light guide plate (40)
When assembling the second dial plate (11) having the second light guide plate (41) into the meter case 60, the order of incorporation can be freely set.

Therefore, there is a remarkable effect that it is possible to manage parts and to improve the efficiency of assembly work.

[Brief description of drawings]

1 and 2 show one embodiment of the present invention,
FIG. 1 is a partial cross-sectional view of an automobile instrument adopting the light introducing portion structure of the present invention, FIG. 2 is a partial enlarged view of a first light guide plate, and FIGS. Is shown,
FIG. 3 is a front view, FIG. 4 is a sectional view, and FIG. 5 is an explanatory sectional view for explaining inconvenience during assembling work. 10 …… First dial 11 …… Second dial 20 …… First pointer 21 …… Second pointer 30 …… First inner unit 31 …… Second inner unit 40 …… Second 1 light guide plate 41 2nd light guide plate 60 meter case 400 1st light introducing part 401 2nd light introducing part 401a light emitting surface 410a light introducing surface

Claims (1)

[Scope of utility model registration request] 1. A first dial (1) on a meter case (60).
0) and a second dial (11) separate from the first dial (10) are provided so as to be adjacent to each other, and the first dial (10) and the second dial (10) are provided. 11) is provided with a first light guide plate (40) and a second light guide plate (41) separate from the first light guide plate (40) along the back surface thereof, respectively, The first light guide plate (40) has a first light introducing section (400) extending toward the light source (51) located on the back surface side of the first dial (10), and the light source (40). A second light introducing portion (51a) extending from the edge of the first dial (10) to the side edge of the first dial (10) and exposing the light emission surface (401a). 401) integrally, and the second light guide plate (41) is located at a side edge portion of the second dial plate (11) and the light of the second light introducing section (401). Must have a light-introducing surface (410a) facing the emission surface (401a) Light introducing part structure of the instrument, characterized.