JPS5836972Y2 - Vehicle instruments - Google Patents

Description

[Detailed Description of the Invention] The present invention relates to a vehicle instrument installed in an instrument panel of a vehicle such as an automobile.

In order to improve visibility, vehicle instruments usually have a lighting bulb installed inside the housing behind the display panel, and the light from this lighting bulb is reflected by a reflector placed on the front side of the periphery of the display panel. The front of the display board is illuminated indirectly.

However, since such indirect lighting reflects light from the sides of the display board, the reflected light does not sufficiently reach the entire surface of the display board, and uneven light tends to occur, making it impossible to obtain a satisfactory visual effect. be.

Therefore, in recent years, a system has been proposed in which the light from the illumination bulb inside the housing is guided to the front of the display board by a light guide member, and then reflected to the front surface of the display board by a reflective part formed on the light guide member. However, even with this type of light guide member, the visual recognition effect is not so great because the light is reflected from the sides of the display panel and illuminates the display panel surface.

In view of this conventional situation, the present invention has been developed by forming a front cover, which is normally attached to the front of a vehicle instrument for dustproofing and protection purposes, with a light guiding member, and guiding light from a lighting bulb inside the housing into the front of the front cover. At the same time, the nine letters of the symbol are displayed in an embossed manner by being reflected by a diffused reflection section formed in the shape of nine letters of the symbol on the front surface of the front cover, further improving visibility. By forming a leading member, bulb light is introduced into the pointer, and the pointer itself can be displayed in an embossed manner with reflected light, and a light transmitting part in the shape of a nine-letter symbol or the like is partially formed on the display board. The present invention also provides a vehicle instrument that is capable of transmitting information different from the five characters of the symbol on the front cover by the light transmitted through the bulb in the portion.

Embodiments of the present invention will be described in detail below with reference to the drawings.

In the drawing, 1 is a housing fixed to an instrument panel (not shown). Inside the housing 1, a movement 2 of a pointer 3 and a display plate 4 fixed to the movement 2 are disposed. A lighting bulb 5 is disposed on the rear wall of the housing 1.

The display plate 4 is engaged with a stepped portion 1a formed on the inner peripheral surface of the housing 1 so that the light from the illumination bulb 5 does not leak from the peripheral side.

Reference numeral 6 denotes a front cover that covers the front opening of the housing 1. The front cover 6 is made of a light guiding member such as acrylic resin, and its upper side is bent and molded along the earthen wall of the housing 1. It has a light receiving part 7 at its tip which also serves as a locking hook, and the light receiving part 7 is inserted into a locking hole 8 formed in the upper wall of the housing, so that the light receiving part 7 is disposed opposite to the bulb 5.

Further, a plurality of snap parts 9 are integrally molded on the back surface of the flat end of the front cover 6, and after the light receiving part 7 is inserted into the locking hole 8, the snap parts 9 are attached to the lower front edge of the housing 1. It can be attached with one touch by pushing it into a locking hole 10 formed in the hole and engaging it.

Approximately four
It is equipped with reflective surfaces 11.12 cut out at 5 degrees, and reflects the light from the bulb 5 introduced from the light receiving section 7 to these reflective surfaces 11.1.
2, the light is totally reflected and transmitted through the inside of the front side of the front cover 6.

On the front side of the front cover 6, there are displayed characters, symbols, etc. that are normally applied to the display board 4, such as 40 on the upper side near the dial 4, .
Number 13 a of 50 etc. is Km on the lower side far from the dial 4.
A diffused reflection surface 13 is formed in the shape of a character 13b such as /h, 5PEED, etc., and the light passing through the front cover 6 is diffusely reflected by this diffused reflection surface 13 to emboss display characters, symbols, etc. It can be displayed on the screen.

Therefore, in this embodiment, the display plate 4 is used simply as a light shielding plate.

The pointer 3 is made of a light guiding member like the front cover 6, and the light from the bulb 5 is introduced into the pointer 3 and reflected and transmitted within the pointer 3, thereby making the pointer 3 also have an embossed shape. It can be displayed on the screen.

A light guide member 14 having a light receiving portion 15 and reflective surfaces 16 and 17 cut out at approximately 45 degrees is disposed on the back surface of the display panel 4 to allow light to enter the base 3a of the pointer 3.

Furthermore, the display board 4 includes a diffused reflection surface 13 of the front cover 6.
A symbol 5 different from that of the diffused reflection surface 13 is placed on a part that does not overlap with the diffused reflection surface 13.
A light transmitting portion 18 in the shape of a character or the like is formed.

With the above configuration, the tip of the illumination bulb 5 inside the housing 1 is incident on the light receiving part 7 of the front cover 6 facing inside the housing 1, and this incident light is totally reflected by the reflection surfaces 11 and 12 and is reflected on the front cover 6. It penetrates into the inside of the front side.

Then, this transmitted light is diffusely reflected by the diffused reflection surface 13 formed into display characters, symbols, etc. on the front side of the front cover.
The displayed characters, symbols, etc. are clearly displayed in relief, and the transmitted light is sufficiently transmitted to the lower side of the front cover 6, so that the visibility of the entire display of the displayed characters, symbols, etc. can be further improved. .

Further, the bulb light incident on the light receiving section 15 of the light guide member 14 on the back surface of the display panel 4 is totally reflected by the reflective surface 16 and transmitted through the light guide member 14, and is then totally reflected by the reflective surface 17 at the tip of the light guide member 14. and enters the base 3a of the pointer 3.

As a result, the incident light is reflected and transmitted through the entire pointer 3 from the pointer base 3a, and the pointer 3 can also be displayed in relief due to this reflected light, further improving the visibility of the instrument. It can be done.

Furthermore, since the light from the bulb 5 passes through the light transmitting section 18 of the display board 4, characters, symbols, etc. that are different from those displayed on the front cover 6 can be displayed in relief on the display board 4 side as well. In combination with the embossed display of characters, symbols, etc. due to the diffused reflection of the shaped diffused reflection surface 13, visibility can be greatly improved.

As described above, unlike conventional display panel illumination using reflected light, the present invention introduces and transmits light from a lighting bulb into the front cover made of a light guide member, and then uses this transmitted light to display characters, symbols, etc. on the front cover. Characters, symbols, etc. can be displayed in an embossed manner by diffusely reflecting them on the shaped diffused reflective surface, greatly improving visibility.In addition, the pointer itself can also be displayed in an embossed manner, and the light-transmitting part of the display board can be used to display the front cover. Since it is possible to display information that is different from the displayed information in an embossed manner, it has an excellent practical effect in that the display visibility of the entire instrument can be significantly improved.

[Brief explanation of the drawing]

The figure is a sectional view showing an embodiment of the present invention. 1... Housing, 2... Movement, 3... Pointer, 4... Display board, 5... Lighting bulb, 6... ...Front cover, 9...Snap part, 13...
・Diffuse reflection surface, 14... Light guide member, 18...
...Light transmission part.

Claims (2)

[Scope of utility model registration request] (1) A front cover made of a light guide member is disposed at the front opening of a housing that contains a lighting bulb, a pointer movement, a display board, etc. and is incorporated into a vehicle's instrument panel, and one side of the front cover An end portion is disposed through the side wall of the housing to face the bulb, and repulp light is introduced from the end portion and transmitted through the front cover, so that the front cover can function as a lighting member. In a vehicle instrument, the front cover is formed with a diffusely reflective surface with nine symbols, etc., the pointer is formed with a leading member, and light from a bulb is introduced into the back side of the display panel and reflected toward the base of the pointer. In addition to providing the member, the symbol 9 is partially marked on the display board.
A vehicle instrument characterized by forming a light transmitting part in the shape of letters or the like. (2) A snap part is integrally molded on the other end of the front cover, and the snap part can be fitted into a mounting hole formed on the front edge of the housing to be hung.Claim 1 of the Utility Model Registration Vehicle instruments listed in section.