JPH0548092Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The invention is a lighting display for instruments that is installed on the dial of instruments such as automobiles and uses a light source such as an LED to display warnings. Particularly, the present invention relates to a light shielding structure that shields light between the display part and the outside.

(Prior art) For example, the dial of a meter installed on a car's instrument panel has a display function that uses a light source such as an LED to display a warning, in addition to an indicating function that indicates the scale using a pointer. It is being Conventionally, this dial plate has been formed as shown in FIGS. 14 to 17.

In the figure, a dial plate 1 is made of a transparent material such as acrylic resin, and has a pointer hole 2 in its lower part to which a pointer (not shown) is attached. Further, an opaque layer 5 is formed on the entire surface of the dial plate 1 by printing or other means, leaving arcuate scales 3 and circular lighting display portions 4. Furthermore, this opaque layer 5
There may be cases where unillustrated numbers or characters are printed on the scale 3 to indicate the scale 3 or the like. An LED (not shown) for lighting the display section 4 is provided at the lower part of the lighting display section 4.

Further, as shown in FIG. 15, on the outer periphery of the lighting display section 4, a light shielding member 6 is provided which has a shape to shield light from the outside and has a length approximately equal to the thickness of the dial plate 1. The light shielding member 6 is filled with a transparent member 7 as shown in FIG. The thickness of the transparent member 7 in the axial direction may be thinner than the thickness of the dial plate 1, as shown in FIG. The light shielding 6 prevents the light emitted from the LED from leaking to the outside of the lighting display section 4, and at the same time prevents external light from entering the lighting display section 4 from the outside. In the above dial structure, it is necessary to first mold the transparent member 6 filled with the transparent member 7, and then mold it together with the dial 1.

Other structures of the conventional dial plate 1 are shown in FIGS. 18 to 22. In FIGS. 18 to 20, a notch 8a is formed in the circumferential wall of the cylindrical light shielding member 8 in parallel with the axial direction, and the light shielding member 8 and the dial 1 are formed by two-piece molding. combined. The transparent member forming the dial 1 is then wrapped around and filled into the light shielding member 8. The thickness of the transparent member 9 filled in the light shielding member 8 may be equal to that of the dial 1 as shown in FIGS. 19 and 20, or may be thinner as shown in FIGS. 21 and 22. be.

(Problem to be solved by the invention) However, in the case of the structure shown in FIGS. 15 to 17 among the above-mentioned light shielding structures of the lighting display section for instruments, the outer periphery of the lighting display section 4 is shielded from light over the entire circumference. Since it is surrounded by the member 6, the light-shielding efficiency of the dial 1 is perfect, but the light-shielding member 6 must be filled with the transparent member 7 in a separate process and then molded together with the dial 1. However, there were problems in that the number of man-hours increased and the light shielding member 6 was small, making it difficult to perform two-piece molding.

Further, according to the structure shown in FIGS. 18 to 22, the transparent member 9 in the light shielding member 8 and the dial plate 1 must be integrally molded, so that the connecting portion between the dial plate 1 and the transparent member 9 10, there was a problem that the light shielding efficiency was poor because light entered and exited as shown by arrows E and F in FIGS. 20 and 22, respectively.

The present invention has been made in view of the above problems, and an object of the present invention is to provide a light-shielding structure for an instrument lighting display section that is easy to manufacture and can improve light-shielding efficiency.

[Structure of the invention] (Means for solving the problem) In order to achieve the above-mentioned object, the present invention has a display part that is provided in a part of the dial made of a transparent member and that performs a lighting display using a light source, and an external part. In the light-shielding structure of a lighting display section for an instrument in which a light-shielding member is provided on the outer periphery of the display section to block light, the light-shielding member is formed over the entire inner circumference of the display section, and a part of the peripheral wall of the light-shielding member is provided. A notch is provided in the light shielding member, and the dial plate is extended within the inner periphery of the light shielding member.

(Function) According to the above structure, the transparent member filled in the light shielding member is integrally connected to the scale plate through the notch formed in the light shielding member, so that the light shielding member and the dial plate are connected together. Two-piece molding can be easily performed. Further, since the outer periphery of the light shielding member other than the cutout portion is provided over the entire inner circumference of the display portion, light shielding efficiency can be improved.

(Example) Hereinafter, one example of the light-shielding structure of a lighting display section for an instrument according to the present invention will be described with reference to the drawings.

An embodiment of the present invention is shown in FIGS. 1 and 2.
The feature of this embodiment lies in the shape of the light shielding member 6 in the conventional example shown in FIG. 15, and other parts are similar to the conventional example. A notch 12 is formed in a part of the light shielding member 11, which is made of an opaque material and formed in a substantially cylindrical shape, on the surface side so as to penetrate in the radial direction and have a depth of approximately half the thickness of the dial plate 1. . The light-shielding member 11 and the dial 1 are integrally formed by two-piece molding, and the transparent member constituting the dial 1 flows into the light-shielding member 11 through the notch 12 and is filled into the light-shielding member 11. be done.

According to this embodiment, the notch 12 is provided in the light shielding member 11.
is formed, so that the dial 1 and the light shielding member 11
and can be easily molded into two pieces. Further, since a part of the light shielding member 11 in the thickness direction is formed over the entire circumference, it is possible to reduce light entering and exiting between the transparent member within the light shielding member 11 and the dial 1 on the outside. As a result, it is possible to improve the light shielding efficiency with respect to light flooding from the lighting display section 4 to the outside and light leakage from the outside to the lighting display section 4.

Other embodiments of the present invention are shown in FIGS. 3 to 10. Figure 3 shows the notch 12 shown in Figure 2 on the dial plate 1.
4 and 5, respectively, when the thickness of the transparent member in the light shielding member 11 is equal to the depth of the notch 12, and when it is formed deeper, FIG. 6 shows the thickness of the transparent member in the notch. 12 is formed approximately at the center of the light shielding member 11 in the axial direction. In addition, FIG. 7 shows a thin part 13 on the dial 1 outside the notch 12.
8 to 10 show the notch 1
2 are passed through the light shielding member 11 in the axial direction, and thin portions 14, 15, 16 are formed on the dial plate 1 instead.
This is the case when . Here, the thin part 14 shown in FIG. 8 is formed on the peripheral wall of the light shielding member 11, and the thin part 15 shown in FIG. 1st
The thin wall portion 16 shown in FIG. 0 is a case where the outwardly extending portion of the light shielding member 11 of the thin wall portion 15 is tapered. In either case, the same effects as the embodiments shown in FIGS. 1 and 2 can be obtained.

Further, FIG. 11 shows still another embodiment of the present invention. In this embodiment, a flange-shaped light-shielding portion 16 made of opaque resin is provided on the dial plate 1 at the outer periphery of the lower surface of the light-shielding member 11 of the embodiment shown in FIG. According to this embodiment, as shown in FIG.
The light 18 emitted from the dial plate 1 passes through the light guide plate 19.
Also, as shown in FIG. 13, external light 20 can be prevented from entering from the display section 4 into the light guide plate 19.

[Effects of the invention] As explained above, according to the light-shielding structure of the lighting display section for instruments according to the present invention, the inner periphery of the display section is entirely covered with the light-shielding member, and a notch is formed in a part of the light-shielding member. Since the dial and the interior of the light-shielding member are communicated with each other, the dial and the light-shielding member can be easily molded into two pieces, and the light-shielding efficiency can be improved.

[Brief explanation of the drawing]

FIG. 1 is a perspective view showing a light shielding member according to an embodiment of the light shielding structure of a lighting display section for an instrument according to the present invention, FIG. 2 is a sectional view taken along line A-A in FIG. 1, and FIGS.
Figure 1 is a sectional view of the same part of another embodiment of the present invention;
12 and 13 are sectional views showing the operation of the embodiment shown in FIG. 11, FIG. 14 is a front view showing a dial with a lighting display section, and FIGS. 15 and 18.
16 and 17 are respectively sectional views taken along the line B-B in FIG. 15, and FIGS. 19 and 21 are respectively shown along the line C--C in FIG. 18. C-line sectional view, Fig. 20 and Fig. 2
2 is a sectional view taken along the line D--D in FIG. 18, respectively. 1...Dial board, 4...Lighting display section, 6, 8, 1
1... Light shielding member, 12... Notch.

Claims (1)

[Scope of utility model registration request] In the light-shielding structure of a lighting display section for an instrument, a light-shielding member is provided on the outer periphery of the display section to shield light from the outside and a display section that is provided on a part of a dial made of a transparent member and performs a lighting display using a light source. A light shielding member is formed over the entire inner circumference of the display portion, and a cutout is provided in a part of the peripheral wall of the light shielding member,
A light-shielding structure for a lighting display section for an instrument, characterized in that the dial plate extends within the inner periphery of the light-shielding member.