JPS6339058B2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a display device installed in vehicles such as vehicles, ships, and other various devices, and particularly relates to a device that displays by transmitting light emitted from a light source. It is.

[Conventional technology and its problems]

As a display device that has been widely used in the past,
35814 and Utility Model Application Publication No. 50-133080 are known. FIG. 1 shows a general example of this type of conventional device, which is used as a display device for vehicles. In the figure, reference numeral 1 denotes an upper case of a display device that displays information according to the state of the display target of each part of the vehicle, and this upper case 1 may be integrated with dials of various instruments. The upper case 1 is provided with a transparent plate mounting hole 2, and after a transparent display plate 3 is fitted into the transparent plate mounting hole 2, it is fixed with an adhesive 4. This transparent plate 3 is colored and transparent, and as shown in FIG.
On the surface, characters representing display items are printed. Reference numeral 5 denotes a light-shielding tube that stands up from the lower case 6 so as to be located around the space below the light-transmitting plate 3. A lamp mounting hole 7 is provided in the lower case 6 at a position surrounded by the light-shielding tube 5, so that this lamp can be mounted. A lamp 9 is attached to the hole 7 via a lamp socket 8. 1
Walls 0 and 11 stand up from the back surface of the upper case 1 and are located inside and outside the upper end of the light-shielding tube 5, respectively, to prevent light leakage.

With the above configuration, for example, when a car door is open, the transparent plate 3 displays the opening and closing of the door.
The lower lamp 9 lights up to notify the driver that the door is open.

However, in the display device with the above configuration, when the lamp 9 is turned on, that is, when the display is performed, the driver can see the light passing through the transparent plate 3, and must then read the characters at the position corresponding to the visible light. Furthermore, since the amount of light passing through the transparent plate 3 is large at that time, it may be difficult to read the characters.

Therefore, as shown in Japanese Utility Model Publication No. 42-9227, as shown in Figure 3, an opaque black color was printed on the surface of the transparent plate 3' without the text and pictures. This will reduce the amount of light and make it easier to read, but if the light-transmitting plate 3' is attached in the same way as shown in FIG. The disadvantage is that it gets stored away. In addition, as a countermeasure, a method of integrally molding the transparent plate 3' whose surface has already been printed and the upper case 1 may be considered, but the printed portion of the transparent plate 3' may be damaged in the subsequent process, causing light leakage. It is easy to cause this problem, and it is inconvenient that a check is required for each process. Originally, printing and painting tend to cause minute printing (or paint) leakage points called pinholes, and countermeasures are required, such as repeating printing or painting multiple times. FIG. 4 is a sectional view taken along the line AA in FIG. 3, and 12 represents a pinhole. If a pinhole were present in the black part, which occupies a large area, it would be very noticeable and reduce the product value.

In addition, when attached to a motorcycle, a high degree of water resistance is required, so the method of attaching a transparent display plate as described above may not be sufficient.
Therefore, when molding the upper case, a printed translucent plate is often set in a mold, etc., and these are integrally molded, but even then, checks are required at each step as described above. Even if the printing process is delayed as much as possible to reduce the number of checks, light leaks from the surrounding area of the printed area, and the problem of pinholes remains.

[Means to solve the problem]

The present invention has been made in view of the above points,
In a display device that displays by transmitting light emitted from a light source through a transparent display plate when a light source emits light, a convex portion is formed by forming a display portion on the surface of the transparent display plate in a protruding manner. A non-transparent resin is integrally formed with the transparent plate for display on at least the surface other than the convex portion of the transparent plate for display, and printing is applied to the necessary portions of the surface of the transparent plate for display. , is characterized by providing a light-shielding layer by painting or the like.

〔Example〕

Hereinafter, the present invention will be explained in detail based on the accompanying drawings.

FIG. 5 shows an embodiment of the present invention,
This is a display device used to indicate that the gear position is overdrive.

In the figure, reference numeral 21 denotes a display transparent plate, and the character portion on the front side is formed to protrude to form a convex portion. Other than the convex portions on the surface of the display transparent plate 21,
A non-transparent resin is formed on the outer periphery of the back surface of the light-transmitting display plate 21 and on the side surface of the light-transmitting display plate 21 so as to be integrated with the light-transmitting display plate 21 to form a light-shielding portion 22. A smoke plate 23 serving as a front glass is disposed above the outer peripheral side of this light shielding part 22, and a cylinder 24 made of white resin is disposed below it, extending downward from the smoke plate 23. Reference numeral 25 denotes a case, which is formed by pouring resin melt into a mold in which each of the above-mentioned constituent elements is set so as to be integrated with each of the above-mentioned constituent elements. Since the convex portions of the light-transmitting plate 21 are marked with the letters O and D, the light-shielding layer 26 is printed or painted using a hot stamp or the like in order to block light from the area surrounded by the letter lines. It has a similar color and is opaque. A lamp 27 serves as a light source and is configured to be lit when the gear position is in overdrive.

With the above configuration, when the gear position is in overdrive, the lamp 27 lights up, and the lens
However, since the upper surface other than the text area is covered with a light-shielding part 22 made of non-transparent resin, and the light-shielding layer 26 is also non-transparent, the user cannot see the light passing through it. The character part to be obtained, ie, "OD" will be visible.

The light-shielding layer 26 is necessary when the characters to be displayed have a portion surrounded by lines, and is similarly provided in the portion surrounded by lines even in the case of pictures rather than letters. The above-mentioned pinholes may be formed in this light-shielding layer 26, but since the area of this part is small, pinholes are difficult to form, and since there is a transparent display section on the outer periphery, it is difficult to notice, so the product value is lost. There are almost no In addition, since the area to be printed or painted is small, it is less likely to be damaged in subsequent steps, making it easier to check each step.

As described above, according to this embodiment, a display device with almost no light leakage can be constructed. Further, this embodiment also has the effect of having good waterproof and dustproof properties.

For example, if the light shielding layer 26 is a number, it is 0, 6, 8.
etc., and for Alphabetical, A, B, D, O,
This applies to characters and pictures that are surrounded by character lines, etc., such as P, etc., and even if the displayed character is a character that does not have a part surrounded by character lines, such as "FUEL". It is not necessarily necessary. However, even in this case, if the shape of the top surface of the four convex portions of the transparent display plate is simply made into a rectangular shape, and then only the shapes of letters and pictures are printed or painted, the same effect as in the above embodiment can be obtained. It is possible to configure a display device having the following, without departing from the present invention. Further, in this case, there is an advantage that when manufacturing the lens, a display transparent plate having the same shape can be made, and the displayed characters or pictures can be determined by printing or painting.

In addition, when the present invention is applied to a display device in which a display transparent plate is attached to the dial of a meter, the light shielding part 22 in the above embodiment is replaced with a dial,
When molding the dial plate, it is made to be integrated with the display transparent plate, and the smoke lens 23 and case 25 are omitted, and the cylinder body 24 is formed in the instrument case that includes this display device, as is often seen in conventional devices. This can be easily achieved by connecting the bottom surface and the dial on the outer periphery of the display transparent plate and configuring the lamp to be located inside the cylinder. Furthermore, the cylindrical body may be made of metal, etc., except for the characters and pictures formed protruding from the display transparent plate.
That is, a resin light-shielding portion is provided in the non-convex portion to block light, and a light-shielding layer is formed by printing or painting on the necessary portions to display characters or pictures. Further, in the above embodiment, the display transparent plate 2
Although the upper surface of the convex portion 1 and the upper surface of the light shielding portion 22 are shown to have approximately the same height, these heights may be different.

Furthermore, in the embodiments described above, the present invention was applied to a display device in a vehicle, but it goes without saying that the present invention can also be applied to other vehicles and various types of equipment.

〔Effect of the invention〕

According to the present invention, it is possible to configure an easy-to-read display device with extremely little light leakage.

[Brief explanation of the drawing]

1 and 2 are diagrams showing the configuration of a conventional display device, FIGS. 3 and 4 are diagrams showing display lenses of other conventional examples, and FIGS. 5 and 6 are diagrams showing an embodiment of the present invention. To illustrate an example, FIG. 5 is a sectional view showing the overall configuration, and FIG. 6 is a front view of the display section. DESCRIPTION OF SYMBOLS 21... Transparent plate for display, 22... Light shielding part (opaque resin), 24... Cylindrical body, 26... Light shielding layer, 27... Light source.

Claims (1)

[Claims] 1. In a display device that displays by transmitting the light emitted by the light source through a transparent display plate when a light source emits light, the display portion of the surface of the transparent display plate is formed to protrude to form a convex portion. A non-transparent resin is integrally formed with the transparent display plate on at least the surface other than the convex portion of the transparent display plate, and a non-transparent resin is provided on the necessary portions of the surface of the convex portion. printing,
A display device characterized by providing a light-shielding layer by painting or the like.