JP4746970B2 - Display device - Google Patents

Description

  The present invention relates to a display device having an LCD (Liquid Crystal Display), and more particularly to a display device attached so that a dial is in contact with a part of the upper surface of the LCD.

  In recent years, a display device such as a combination meter mounted on a vehicle or the like includes an LCD that displays an accumulated travel distance and other travel information. Normally, the LCD is attached so that a dial having a design such as numerals and scales is in contact with a part of the upper surface of the LCD (parts other than the display portion). FIG. 7 is an exploded perspective view showing a main part of this type of conventional display device. FIGS. 8A and 8B are cross-sectional views showing a state in which the LCD is normally mounted and a state in which the LCD is mounted in a lifted manner, respectively.

  As shown in FIG. 7, the display device 9 is configured such that a dial (not shown) is superimposed on the upper surface A of the case 91 so as to cover the LCD 92 and the diffusion plate 93 mounted on the case 91. The case 91 has an LCD housing portion 912 shaped like a substantially rectangular shape corresponding to the LCD 92 and the diffusion plate 93. A plurality of light sources 941 for backlighting of the LCD 92 and terminal receiving portions 942 are mounted on the substrate 94 on the bottom surface, which is the deepest portion of the LCD housing portion 912.

  The LCD 92 has a rectangular plate shape, and displays, for example, the accumulated travel distance and other travel information on the outside in a digital or graphic manner. From one of the long sides of the LCD 92, a plurality of pin terminals 921 including a power supply terminal and various control terminals are led out downward. The diffusing plate 93 is for diffusing light from the light source 941 as a backlight and providing it uniformly to the back surface of the LCD 92. The diffusion plate 93 may not be provided.

  When assembling the display device 9, first, the diffusion plate 93 is attached to the LCD housing portion 912 of the case 91. Next, after aligning the pin terminal 921 of the LCD 92 with the terminal receiving portion 942, the pin terminal 921 is inserted into the terminal receiving portion 942 so as to press the LCD 92 against the case 91 side. When the mounting of the LCD 92 is finished, the dial is overlaid from above.

An example of a display device having the LCD as described above is as follows.
Japanese Patent Laid-Open No. 11-14397

  By the way, in the above assembly process, if the LCD 92 is normally mounted, the upper surface a of the LCD 92 should be equal to or lower than the upper surface A of the case 91 as shown in FIG. . Then, the dial plate 95 is attached to the case 91 without being lifted, and the assembly is completed normally. Reference numeral 951 denotes an opening window provided so as to correspond to the display unit of the LCD 92.

  On the other hand, for example, as shown by 92 'in FIG. 7, if the LCD 92 is mounted in an inclined state and a part of the upper surface a of the LCD 92 is lifted more than the upper surface A of the case, it is mounted in FIG. As shown in B), a part of the upper surface a of the LCD 92 is higher than the upper surface A of the case 91. If it does so, a part of dial 95 will remain attached and will be attached to case 91. FIG.

  However, in the conventional display device, as shown by 92 'in FIG. 7, it can be easily confirmed that the LCD 92 is mounted at an angle and the state shown in FIG. There wasn't. That is, since the upper surface a of the inclined LCD 92 as shown by 92 'in FIG. 7 and the upper surface A of the case 91 are in a straight line relationship, the inclination can be easily confirmed when viewed from the direction of the arrow in FIG. I couldn't. For this reason, the dial plate 95 may be attached to the case 91 while being lifted. Therefore, a display device having a very bad appearance may be completed.

  Therefore, in view of the above-described present situation, the present invention provides a display device that can easily confirm that the LCD is lifted and mounted, and can prevent the dial from lifting from the upper surface of the case. It is an issue.

The display device according to claim 1, which has been made to solve the above problems, includes a plate-shaped LCD, a dial plate disposed on the upper surface of the LCD, and a housing portion of the LCD mounted on the lower surface of the dial plate. And a case to which the LCD , the dial plate, and the diffusion plate are attached, and the dial plate covers the LCD attached to the case so as to cover the upper surface of the case. The display device is attached to the LCD at a position adjacent to the outer peripheral portion of the LCD at a predetermined interval, and the upper end of the display device is at a height that is the maximum limit for mounting the LCD. there are a plurality of convex portions, have a, the convex portion is integrally formed on the diffusion plate, characterized in that.

  According to the first aspect of the present invention, it is easy to determine whether or not the LCD is tilted and a part of the LCD is lifted by the plurality of convex portions whose upper end portions are at a height that is the maximum limit of LCD mounting. Can be confirmed. Therefore, it is possible to prevent the dial from being lifted.

In addition, since the convex portion is integrally formed with the diffusion plate, the case itself can use the conventional structure as it is.

Display device according to claim 2, wherein has been made to solve the above described problems is the display device according to claim 1 Symbol placement, the convex portion, on the side opposite to the side surface of the pin terminal of the LCD is provided It is provided, It is characterized by the above-mentioned.

According to the second aspect of the present invention, since the convex portion is provided on the side facing the side surface on which the pin terminal of the LCD is provided, it is possible to easily confirm the inclination in the direction most likely to occur when the LCD is attached. .

  According to the first aspect of the present invention, it is easy to determine whether or not the LCD is tilted and a part of the LCD is lifted by the plurality of convex portions whose upper end portions are at a height that is the maximum limit of LCD mounting. Can be confirmed. Therefore, it is possible to prevent the dial from being lifted. Therefore, it is possible to provide a display device having a good appearance with few assembling errors.

In addition, since the convex portion is integrally formed with the diffusion plate, the case itself can use the conventional structure as it is. Therefore, an increase in cost can be suppressed.

According to the second aspect of the present invention, since the convex portion is provided on the side facing the side surface on which the pin terminal of the LCD is provided, it is possible to easily confirm the inclination in the direction most likely to occur when the LCD is attached. . Therefore, it is possible to provide a display device having a good appearance with few assembling errors.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. FIG. 1 is an exploded perspective view showing a main part of a display device according to an embodiment of the present invention. FIG. 2 is a perspective view showing a state in which the diffusion plate is attached to the case in the display device shown in FIG. FIG. 3 is a cross-sectional view showing a main part of a display device according to an embodiment of the present invention. FIG. 4 is a cross-sectional view showing the vicinity of the mounting confirmation rib in FIG. 3.

  As shown in FIGS. 1 and 2, the display device 1 according to the embodiment covers the LCD 12 and the diffusion plate 13 attached to the case 11 so that a dial (not shown) is attached to the upper surface A of the case 11. Configured. The display device 1 is, for example, a combination meter mounted on the front part of the vehicle. This type of meter is configured by combining an analog gauge such as a speedometer or a fuel gauge with an LCD for displaying the accumulated travel distance and other travel information. 1 and 2 show the periphery of such an LCD.

  The case 11 is made of, for example, resin, and has an LCD housing portion 112 that is shaped like a substantially rectangular shape corresponding to the LCD 12 and the diffusion plate 13 as shown in FIGS. 1 and 4. The opening window has the same shape as the LCD 12. Specifically, the LCD housing portion 112 has a multi-stage structure, and a plurality of light sources 141 for the backlight of the LCD 12 are mounted on the substrate 14 on the bottom surface which is the deepest portion. The light source 141 is, for example, a light emitting diode. The LCD housing portion 112 has a slope that gradually opens, and the highest portion of the slope has a receiving surface structure for the diffusion plate 13. A part of the receiving surface is formed with a stepped corner 113 corresponding to the bent portion 133 of the diffusion plate 13.

  The LCD 12 has a rectangular plate shape, and is, for example, a well-known device that displays and outputs the accumulated travel distance and other travel information digitally or graphically. As shown in FIGS. 1 to 3, a plurality of pin terminals 121 including a power supply terminal and various control terminals are led downward from one of the long sides of the LCD 12.

  The diffusing plate 13 is, for example, a white turbid resin plate member for diffusing the light from the light source 141 as a backlight to uniformly apply it to the back surface of the LCD 12. As shown in FIGS. 1 to 3, the diffusing plate 13 basically includes a flat portion 134 that is substantially equivalent to the flat shape of the LCD 12, and a bent portion 133 that is bent in a stepped manner from the flat portion 134. Specifically, a part of the flat portion 134 has a wave shape as indicated by 132. However, since such a wave shape is not directly related to the gist of the present invention, detailed description is omitted.

  The height D of the bent portion 133 (more precisely, the height from the apex of the wave-like portion 132) is substantially equal to the thickness of the LCD 12, as shown in FIG. A plurality of mounting confirmation ribs 131 (corresponding to the convex portions in the claims) are provided on the upper surface of the bent portion 133. Here, the height of the mounting confirmation rib 131 is set so that the upper end 131 a of the mounting confirmation rib 131 is at the same height as the upper surface A of the case 11. This is a limit dimension for confirming whether the upper surface a of the LCD 12 mounted on the case 11 is raised above the upper surface A of the case 11.

  As shown in FIGS. 1 to 4, the mounting confirmation rib 131 is provided at a position adjacent to the outer peripheral portion of the LCD 12 mounted on the case 11. By doing so, confirmation of the lifting of the LCD 12 can be performed more easily and reliably. At least one mounting confirmation rib 131 may be provided, but by providing a plurality of mounting confirmation ribs 131, it is possible to check whether the LCD 12 is mounted flat. The mounting confirmation rib 131 has a rectangular parallelepiped shape in FIGS. 1 and 2, but may have a triangular shape or the like.

  As shown in FIG. 3, the substrate 14 is provided with a terminal receiving portion 142 to which the above-described light source 141 and pin terminal 121 are connected, and other various electronic components. A back cover (not shown) is provided on the back side of the substrate 14. After the LCD 12 is mounted, a spacer 111 is inserted into the case 11 to ensure stability.

  Although not shown, a dial is disposed on the upper surface of the LCD 12. The dial plate is, for example, a polycarbonate sheet, on which designs such as letters and scales are formed. An opening window is provided in a portion of the dial corresponding to the display surface of the LCD 12.

  Next, with reference to FIG. 5, the assembling method of the display device 1 and the effect of the mounting confirmation rib 131 associated therewith will be described. 5A and 5B are cross-sectional views showing a state in which the LCD is normally mounted and a state in which the LCD is mounted in a lifted manner, respectively. 5A and 5B, portions common to those in FIGS. 1 to 4 are denoted by the same reference numerals, and redundant description is omitted.

  When the display device 1 is assembled, first, the diffusion plate 13 is attached to the LCD housing portion 112 of the case 11 in FIG. At this time, the diffusion plate 13 is mounted while being aligned with the corner portion 113 of the LCD accommodating portion 112 so that the bent portion 133 of the diffusion plate 13 is aligned. Then, the state shown in FIG. 2 is obtained. Next, in FIG. 2, after the pin terminal 121 of the LCD 12 is aligned with the terminal receiving portion 142, the pin terminal 121 is inserted into the terminal receiving portion 142 so as to press the LCD 12 against the case 11 side. Then, the state shown in FIG. 3 is obtained, and the spacer 111 is further inserted into the case 11. Then, a dial is attached from above.

  At this time, if the LCD 12 is normally mounted, the upper surface a of the LCD 12 should be lower than the upper surface A of the case 11 as shown in FIG. Since the upper end of the mounting confirmation rib 131 is set to have a height substantially equal to the upper surface A of the case 11, all of the plurality of mounting confirmation ribs 131 protrude from the upper surface a of the LCD 12 at this time. Is visible. Thereby, the operator can confirm that the LCD 12 is normally mounted. In order to confirm that the mounting confirmation rib 131 protrudes, the vicinity of the rib 131 may be touched by hand. In this way, when it is confirmed that the LCD 12 is normally mounted, the dial plate is attached to the case 11 without being lifted up, and the assembly is completed normally.

  On the other hand, for example, as shown by 12 'in FIG. 2, if the LCD 12 is mounted tilted and a part of the upper surface a of the LCD 12 is lifted more than the upper surface A of the case 11, it is mounted as shown in FIG. As shown in (B), a part of the upper surface a of the LCD 12 is higher than the upper surface A of the case 11. Then, when viewed from the direction of the arrow in FIG. 2, one of the plurality of mounting confirmation ribs 131 appears to protrude from the upper surface a of the LCD 12, but the other one does not protrude from the upper surface a of the LCD 12, or only slightly. Only protrude. Thus, the operator can easily confirm that the LCD 12 is mounted while being tilted and that a part of the upper surface “a” of the LCD 12 is lifted more than the upper surface A of the case 11. In this way, when it is confirmed that the LCD 12 is not normally mounted, the inclination of the LCD 12 is corrected so as to obtain a state as shown in FIG.

  As described above, according to the embodiment of the present invention, it is possible to prevent the dial from lifting from the upper surface of the case 11 during assembly. Therefore, it is possible to provide a display device having a good appearance with few assembling errors.

  In addition, as in the above-described embodiment, by integrally forming the mounting confirmation rib 131 on the diffuser plate 13, the case itself can use the conventional structure as it is. Therefore, an increase in cost can be suppressed. However, the mounting confirmation rib 131 may be provided at a place other than the diffusion plate 13, for example, on the case 11 side.

  In the above embodiment, the height of the mounting confirmation rib is the same as that of the upper surface of the case. For example, as shown in D of FIG. In the case where a rib or a boss is formed, a mounting confirmation rib 131 having a height that is the maximum limit of LCD mounting below that height may be provided. For example, as shown in FIG. As shown in D, when a dial plate 15 having a diaphragm opening 151 ′ is used, a mounting confirmation rib 131 having a height that is the maximum limit of LCD mounting below the upper surface of the case may be provided.

It is a disassembled perspective view which shows the principal part of the display apparatus which concerns on one Embodiment of this invention. FIG. 2 is a perspective view showing a state in which a diffusion plate is mounted on a case in the display device shown in FIG. 1. It is sectional drawing which shows the principal part of the display apparatus which concerns on one Embodiment of this invention. It is sectional drawing which shows the vicinity of the rib for mounting confirmation in FIG. 5A and 5B are cross-sectional views showing a state in which the LCD is normally mounted and a state in which the LCD is mounted in a lifted manner, respectively. FIGS. 6A and 6B are cross-sectional views showing modifications of the mounting confirmation rib. It is a disassembled perspective view which shows the principal part of this kind of conventional display apparatus. FIGS. 8A and 8B are cross-sectional views showing a state in which the LCD is normally mounted and a state in which the LCD is mounted in a lifted manner, respectively.

Explanation of symbols

1 Display device 11 Case 12 LCD
13 Diffusion plate 14 Substrate 131 Mounting confirmation rib (convex part)

Claims (2)

A plate-shaped LCD,
A dial arranged on the upper surface of the LCD;
A diffusion plate mounted on the lower surface of the dial plate and constituting a part of the housing portion of the LCD;
The LCD, the comprising: a case dial and the diffusion plate is attached, wherein the dial to cover the LCD mounted on the case is a display device which is Juchaku on the upper surface of the case ,
Have a plurality of convex portions, a height at which the maximum degree of juxtaposed apart a predetermined distance, the upper end the LCD mounted at a position adjacent to the outer peripheral portion of the LCD in the receiving portion of the LCD,
The convex portion is integrally formed with the diffusion plate.
A display device characterized by that. The display device according to claim 1,
The display device, wherein the convex portion is provided on a side facing a side surface on which the pin terminal of the LCD is provided .

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