JP2006010419A - Display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a display device having excellent readability and equipped with a translucent member capable of improving a work efficiency. <P>SOLUTION: This display device 1 is equipped with a pointer 2 comprising a translucent material and equipped with an indication part 2a rotating around a rotating shaft 8a, a partition wall (member) 5 equipped with a flat surface provided on the back of the pointer 2, and a light guide (translucent member) 4 provided in contact with the back of the flat surface of the member 5 and equipped with a discrimination part 9 on its back side. A discrimination notation 9a in the discrimination part 9 is a discrimination notation 9a wherein the right and left sides are inverted. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a display device provided with a translucent member.

As this type of display device, a vehicle pointer type display device as disclosed in Patent Document 1 is known. The display device includes a pointer made of a light-transmitting member, a rotary shaft that rotatably supports the pointer, a main body that includes the rotary shaft and drives the pointer, and an index such as a scale provided behind the pointer. And a light guide that is provided behind the display plate and guides light from a light source to the pointer and the display plate.
JP 7-218296 A

  A display device is known that includes a plurality of vehicle information display devices such as a speedometer, a tachometer, and a fuel meter, and includes a plurality of components corresponding to each meter. Many of these components have similar shapes. Therefore, each part is identified by a symbol such as a model, a serial number, and a manufacturing date. For example, as shown in FIGS. 4 and 5, the light guide 41 used in the vehicle speedometer is provided with a convex shape as an identification symbol 91a on the back side as viewed from the observer, so that the light guide of any meter You can see if it is.

  The display device as described above is assembled in such a manner that the disposition positions are sequentially stacked from the back side (lower side) components viewed from the observer, for example, on the circuit board, the main body, the light guide 41, and the display plate , Guidelines are assembled. The assembly work of the component parts is performed with the back side of the component parts facing down and the front side facing up as viewed from the observer. At this time, the component identification symbol 91a is confirmed from the front side. For example, as shown in FIG. 5, since the identification symbol 91a is provided on the back side of the light guide body 41 made of a translucent material, the identification symbol 91a attached to the back side is watermarked from the front side during or after assembly. When viewed, the left and right symbols (mirror characters) are reversed (see Fig. 4), so the readability is low, incorrect assembly occurs, and confirmation work from the back side is required. There is a risk of mixing.

  There is also a method of attaching the identification symbol 91a to the front side of the translucent component. However, in the case of a structure in which a flat plate member is disposed on the front side, the front side of the translucent component is flattened by the convex identification symbol 91a. Therefore, the flat plate member is not installed horizontally and the stability is poor.

  Therefore, a manufacturing method in which the identification symbol 91a is formed in a concave shape instead of a convex shape is conceivable. However, in comparison with a manufacturing method in which the convex identification symbol 91a is formed, a mold in which the identification symbol 91a portion is left uncut must be used. In other words, mold processing costs are high.

  In addition, there is a method of eliminating a protrusion on the surface by forming a concave portion with a certain area and a predetermined depth on the surface of the component, and providing a convex identification symbol 91a in the concave portion. Similarly, there is a problem that mold processing costs are required.

  The present invention has been made in view of this problem, and provides a display device having excellent legibility and improving work efficiency.

  In order to solve the above-described problems, the present invention is a display device including a translucent member made of a translucent material and having an identification unit, and the identification unit is an identification symbol that is reversed left and right.

  According to a second aspect of the present invention, the display device is a member that includes a pointer that is made of a light-transmitting material and includes an indicator that rotates around a rotation axis, and a flat surface that is provided behind the pointer. And a translucent member provided in contact with the back of the flat surface of the member and provided with the identification portion on the back side.

  According to a third aspect of the present invention, the translucent member is a display board having indicators such as letters and scales.

  According to a fourth aspect of the present invention, the translucent member is a light guide that guides light to the pointer or the member.

  Further, as described in claim 5, the identification symbol has a convex shape.

  The present invention relates to a translucent member provided with an identification symbol, and can provide a display device that has excellent legibility and improves work efficiency.

  Hereinafter, embodiments of the present invention will be described with reference to the accompanying drawings.

  FIG. 1 is a cross-sectional view showing an embodiment of the present invention. FIG. 2 is a view (front view) of the light guide 4 in the present embodiment viewed from the front side. FIG. 3 is a view (back view) of the light guide 4 in the present embodiment viewed from the back side.

  The display device 1 includes a pointer 2, a display plate 3, a light guide (translucent member) 4, a partition wall (member) 5, a circuit board 6, a light source 7, and a main body 8.

  The pointer 2 is made of a translucent material, and includes an instruction portion 2a that rotates around a rotation shaft 8a extending from a main body 8 that drives the pointer 2, and a light-shielding material that covers a rotation center region of the instruction portion 2a. And a covering portion 2b. The instruction unit 2a receives light from the light source 7 and instructs to emit light.

  The display board 3 is made of a flat plate member, and is printed with a light-shielding dark ink except for an index portion such as a scale or a symbol printed with a light-transmitting ink. The display board 3 has a structure in which the indicator portion is transmitted and illuminated from behind.

  The partition wall 5 is made of a light-shielding synthetic resin material, and surrounds the light source 7 by the wall portion 5a and the ceiling portion 5b. The wall 5a has a cylindrical shape so as to partition the illumination area of the light source 7. The ceiling part 5b is provided on the front side of the wall part 5a, has a disk shape, and a circular opening 5c is formed at the center so that the rotating shaft 8a and the cylinder part 4b penetrate. The display board 3 is arrange | positioned at the front side of the ceiling part 5b. The circuit board 6 is a hard circuit board 6 made of glass epoxy resin or the like, and includes three light sources 7 such as light emitting diodes. The main body 8 includes a cross coil instrument main body, a stepping motor, and the like, and is fixed to the back side of the circuit board 6 in the embodiment of the present invention.

  The light guide 4 is made of a light-transmitting resin material such as acrylic or polycarbonate, and is formed by molding. The light guide 4 includes a leg portion 4a, a tube portion 4b, a light receiving portion 4c, and a connecting portion 4d. The leg 4a has an arc shape and is provided to extend in the direction of the circuit board 6. The leg 4 a supports the light guide 4 by inserting the tip of the leg 4 a into a hole 6 a provided in the circuit board 6. The leg portion 4a has an arc shape in order to support the light guide 4 stably by restricting insertion of the tip and increasing the area in contact with the circuit board 6. The cylindrical portion 4b guides light from the light source 7 to the pointer 2, and has a cylindrical shape. The light receiving part 4c receives light from the light source 7 and transmits it to the cylindrical part 4b. The light receiving part 4 c is divided into three parts from the cylindrical part 4 b and is provided so as to extend corresponding to the three light sources 7 provided on the circuit board 6. The connection part 4d connects the leg part 4a and the cylinder part 4b. The connecting portion 4d is flat and parallel to the circuit board 6. A ceiling portion 5b of the partition wall 5 is disposed on the front side of the connecting portion 4d. An identification unit 9 is provided on the back side of the coupling unit 4d.

  The identification unit 9 includes an identification symbol 9a. The identification symbol 9a is provided at the time of molding and is represented by left and right inverted symbols (mirror characters) having a convex shape. The light guide 4 is made of a translucent material, and the observer O can see the identification symbol 9a provided on the back side through the front side, and can be read with normal correct characters (symbols). Moreover, when the confirmation symbol 9a is in a state where it can be read correctly in the vertical and horizontal directions when checking, it can be seen that the light guide 4 is in the correct assembly direction. Since the light guide 4 disclosed in FIGS. 2 and 3 is provided in the speedometer, the identification symbol 9a is represented by the alphabet SP, and can be correctly read instantaneously from the front side as shown in FIG. This prevents mistakes and improves work efficiency.

  The light guide 4 is provided in the display device 1, and a member such as the display plate 3 having a flat surface provided on the light guide 4 is horizontally installed by having a flat surface on the front side of the connecting portion 4 d. can do. In addition, the identification symbol 9a provided on the back side can be seen through more clearly.

  Further, in the display device 1 composed of many components, by using a translucent member such as the display plate 3 and the light guide 4 provided with the identification unit 9, the identification symbol provided on the back side during and after the assembly. The components can be easily confirmed by seeing through 9a.

  Further, by making the identification symbol 9a convex, it is possible to reduce the manufacturing cost by forming the identification symbol 9a on the light guide 4 at the time of molding, and by making the convex shape the mold processing cost can be reduced. Can be suppressed.

  In the embodiment of the present invention, the translucent member 4 is the light guide 4 of the display device 1. However, in the present invention according to claim 1, the light transmissive member 4 is used for any display device in which components are assembled. This is effective in the translucent member 4. For example, a cover disposed on the front surface of the display device 1, a pointer 2, a display plate 3, or the like may be used, and any light transmitting member 4 made of a light transmitting material may be used.

  In the embodiment of the present invention, the partition wall 5 is disposed as a member on the light guide 4. However, in the present invention according to claim 2, the member may be the display panel 3 and has a flat surface. Any member can be used.

  The translucent member 4 may be transparent or translucent, and its light transmittance is arbitrary as long as it can be seen through the identification symbol 9a.

  In the embodiment of the present invention, the alphabet is used for the identification symbol 9a, but it may be a mark such as a letter, a number, or a design, and the combination thereof is also arbitrary. For example, in the light guide 4 of the tachometer, it is conceivable to use TA for the identification symbol 9a.

Sectional drawing which shows embodiment of this invention. The front view of embodiment same as the above. The back view of embodiment same as the above. The front view of a prior art example. The back view of a prior art example.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Display apparatus 2 Pointer 3 Display board 4 Light guide (translucent member)
5 Partition walls (members)
9a Identification symbol

Claims (5)

A display device comprising a translucent member made of a translucent material and having an identification part,
A display device characterized in that the identification unit is an identification symbol that is reversed left and right. The display device
A pointer made of a translucent material and provided with an indicator that rotates about a rotation axis;
A member having a flat surface provided behind the pointer;
A translucent member provided in contact with the back of the flat surface of the member and provided with the identification portion on the back side;
The display device according to claim 1, comprising:   The display device according to claim 1, wherein the translucent member is a display board having indicators such as letters and scales.   The display device according to claim 1, wherein the translucent member is a light guide that guides light to the pointer or the member.   The display device according to claim 1, wherein the identification symbol has a convex shape.

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