JPH0423265Y2 - - Google Patents

Description

[Detailed description of the invention] [Purpose of the invention] (Industrial application field) The present invention is a liquid crystal display for mounting a liquid crystal display in the front opening of a case that is equipped with a light source for illumination inside. The present invention relates to a mounting device.

(Prior Art) There is a type of liquid crystal display that improves visibility even when outside light is not available, such as at night, by illuminating the display board with a light source behind it. FIGS. 4 and 5 show an example of such a liquid crystal display.

This liquid crystal display has a light source 51 built into a housing 50 made of sheet metal with a reflective plate around the periphery.
A transparent acrylic plate 52, a transflective plate 53, and a liquid crystal display 54 are sequentially stacked on the front opening of the
The entire structure is attached to the front surface of the casing 50 by covering them with a holder 55 from the outside and engaging the claws 56 provided on the holder 55 with the flange 57 around the casing 50.

(Problem to be solved by the invention) However, in the conventional liquid crystal display mounting device as described above, the liquid crystal display 54 and other members are simply held between the holder 55 and the casing 50. However, the disadvantage was that the positioning accuracy was low. In particular, as is clear from the cross-sectional view of FIG. 6, the liquid crystal display 54 itself is directly fixed from the periphery by the holder 55, but other members are indirectly supported by the holder 55 and the casing 50. Because the holder 55 is
There was a drawback that the liquid crystal display 54 and other parts were cracked inside, producing chattering noises and the like.

In addition, this conventional type requires a separate member such as a holder 55 in addition to the casing 50, resulting in a complicated structure, a large number of parts, and a large number of manufacturing steps.

The purpose of this invention is to provide a liquid crystal display mounting device that does not require separate parts such as a holder, does not cause misalignment or cracking when fixing a liquid crystal display or transflector, has high mounting accuracy, and has a simple structure. It is about providing.

[Structure of the invention] (Means for solving the problem) The liquid crystal display mounting device of the invention has a semi-transparent reflector plate mounted on the front surface of a housing containing a light source by pressing the transflector plate from the back side. and a liquid crystal display holding claw that engages the transflective plate and the liquid crystal display from the front, and the distance between the transflective plate mounting protrusion and the liquid crystal display holding claw is set to at least half. The thickness is the sum of the minimum thicknesses of the transmissive reflector and the liquid crystal display, and a notch is provided at the base of the protrusion for attaching the transflective plate.

(Function) In the present invention having the above configuration,
When the transflective plate and liquid crystal display are inserted directly from the front of the housing, the retaining claws open outward and the transflective plate and liquid crystal display are inserted, and the transflective plate is used for attaching the transflective plate. The protrusion presses and holds the semi-transparent reflector from the back surface.

In this case, the transflector mounting protrusion has a notch formed on its back surface, so it can be deformed back and forth by the amount of the notch, and its elasticity during deformation allows the transflector to be attached to the liquid crystal display. The device is elastically pressed from the back side by the semi-transparent reflector mounting projections, and is securely held by the holding claws on the front side.

(Example) An example of the present invention will be described below with reference to FIGS. 1 to 3.

*Configuration of the Embodiment As shown in FIG. 1, the casing 1 in this embodiment is composed of a back plate 2 and upper, lower, left, and right side plates 3 provided in contact with the four circumferences thereof. Back plate 2
An opening 4 is provided in the center of the housing 1, and a light source 5 is inserted into the housing 1 through the opening 4. The side plate 3 has an oblique side that widens toward the front opening of the housing 1.
Its inner surface serves as a reflective surface for the light source.

Around the front opening of the casing 1, a projection 6 for attaching a transflective plate is provided. As shown in FIG. 1B, this transflector mounting protrusion 6 has an L-shaped contact surface against the transflector 7 so that the back and upper and lower surfaces of the transflector 7 are supported. has been done.
Further, as shown in FIG. 3, an elongated hole-shaped notch 8 is formed on the rear side of the semi-transparent reflector mounting projection 6, and the semi-transparent reflector mounting projection 6 is formed through this notch 8. It is designed to always deform in the front-rear direction with respect to the mounting surface of the semi-transparent reflector plate 7 and exhibit elasticity.

Further, at the four left and right corners of the front opening of the casing 1, liquid crystal display holding claws 10 that integrally hold the transflective plate 7 and the liquid crystal display 9 are provided to protrude forward. The tip of this liquid crystal display holding claw 10 is designed to elastically open to the outside of the housing 1, and the tip has an engaging portion 11 that protrudes inward.
is provided, and this engaging portion 11 engages with the front surface of the liquid crystal display 9. Further, the tip of the claw 10 is inclined inward, so that when the liquid crystal display 9 is pressed against this tip, the inclined portion serves as a guide and the claw smoothly spreads outward.

In addition, the pitch dimension T from the back contact surface of the transflector of the transflector mounting protrusion 6 to the inside of the claw for holding the liquid crystal display is the plate thickness t ₁ of the transflector 7 and the liquid crystal display. The dimension value is the sum of the minimum dimension of each of the plate thicknesses t ₂ of 9, that is, T≦t ₁ +t ₂ .

Effects of the Embodiment In this embodiment having the above-described configuration, in order to attach the transflective plate 7 and the liquid crystal display 9 to the casing 1, the transflective plate 7 is inserted from the front of the casing 1.
When the liquid crystal display 9 is pressed, the inclined surface of the claw 10 serves as a guide and the claw 10 spreads outward of the housing 1, so that the back surface and upper and lower surfaces of the semi-transparent reflector 7 are used for attaching the semi-transparent reflector. In addition to being locked to the L-shaped surface of the protrusion 6, the front surface of the liquid crystal display 9 is locked to the inside of the engaging portion 11 of the claw 10. At this time, since the transflective plate mounting protrusion 6 has an elongated notch 8 formed at its base, it has elasticity in the front-rear direction, so that the semi-transparent reflective plate 7 and the liquid crystal In the display device 9, the transflective plate 7 is pressed forward from the back surface, and at the same time, the front surface of the liquid crystal display 9 is engaged with the engaging portion 11 of the claw 10, and the transflective plate 7 and the liquid crystal display 9 and is always fixed tightly in the front-back direction.

Thereafter, the liquid crystal display 9 is soldered to a printed circuit board (not shown) provided at the bottom of the housing, so that it is fixed in the vertical direction with solder.

Moreover, by setting the interval T between the semi-transmissive reflector mounting protrusion and the holding claw to the minimum dimension of the thickness t ₁ + t ₂ of the semi-transmissive reflector and the liquid crystal display, the transflective plate 7 and the liquid crystal Even if there is variation in the thickness of the display 9, the elasticity of the transflector mounting protrusion 6 allows the transflector 7 and the liquid crystal display 9 to be pushed forward by the spring, so that each Variations in plate thickness are absorbed, and no misalignment, blurring, etc. occur when fixing the transflective plate 7 and the liquid crystal display 9. Furthermore, the transflective plate 7 and the liquid crystal display 9 can be attached at the same time in one process, reducing the number of manufacturing steps.

[Effects of the invention] As described above, the invention has a simple structure in which a protrusion for attaching a transflective plate having a notch and a claw for holding a liquid crystal display are provided in the front opening of the casing.
Misalignment when fixing the liquid crystal display or transflector,
It is possible to provide a liquid crystal display mounting device that is free from scratches and has high mounting accuracy.

[Brief explanation of the drawing]

Figure 1A is a cross-sectional view showing an embodiment of the liquid crystal display mounting device of the present invention, Figure 1B is an enlarged cross-sectional view of part B in Figure 1A, and Figure 2 is a liquid crystal display mounting device of the present invention. A front view showing an embodiment of the device; FIG. 3A is a plan view showing an embodiment of the liquid crystal display mounting device of the present invention;
Figure 3B is an enlarged plan view of part B of Figure 3A;
The figure is an exploded perspective view showing a conventional liquid crystal display mounting device, FIG. 5 is a side view of FIG. 4, and FIG. 6 is a sectional view of FIG. 4. 1, 50... Housing, 2... Back plate, 3... Side plate, 4... Opening, 5, 51... Light source, 6... Protrusion for attaching semi-transparent reflector, 7, 52... Half Transmissive reflective plate, 8... Long hole, 9... Liquid crystal display, 10, 54
...Liquid crystal display holding claw, 11...Engagement part, 52
...Transparent acrylic plate, 55...Holder, 56...
nail.

Claims (1)

[Scope of Claim for Utility Model Registration] In a device in which a light source is fixed to the back plate of a housing, the inner surface of the housing is configured as a reflector, and a transflective plate and a liquid crystal display are attached to the front of the housing, a semi-transmissive reflector mounting protrusion provided around the opening and abutting the lower part of the semi-transmissive reflector; a slot-shaped cutout provided near the semi-transmissive reflector mounting protrusion of the casing; A liquid crystal display holding claw is provided around the front opening of the casing and engages with the liquid crystal display and the transflective plate from the front, the liquid crystal display holding claw and the semitransparent reflecting plate being attached. A liquid crystal display mounting device characterized in that the distance between the protrusions and the projections is set to be smaller than at least the sum of the minimum thicknesses of the transflective plate and the liquid crystal display.