JP4682620B2 - Display device structure - Google Patents

Description

  The present invention relates to a display device structure of an electronic apparatus having a flat display device such as a portable information processing device.

  In recent years, in a portable information processing apparatus such as a notebook personal computer having a flat display device such as a liquid crystal display device, the device itself has been made thinner and lighter in order to improve its portability.

  On the other hand, improvement in the mechanical strength of the portable information processing apparatus is also required. In particular, since a liquid crystal display device or the like is easily damaged when subjected to an impact, strength is required for a rear housing in which the liquid crystal display device is accommodated. For this reason, the structure for ensuring the intensity | strength of a back housing | casing is devised.

  FIG. 3 is a perspective view showing an appearance of a conventional display device structure, and FIG. 4 is a sectional view thereof. In the figure, 21 is a liquid crystal display device, 22 is a display surface side housing of the liquid crystal display device 21, 23 is a back housing of the liquid crystal display device 21, and 24 is an inverter control for the backlight of the liquid crystal display device 21. It is a circuit board. The rear housing 23 is provided with a rising portion 23c between the flat portion 23a and the flat portion 23b having a step, and the flat portion 23b and the rising portion 23c are arranged on the left and right sides of the flat portion 23a so that the central portion is convex. Is raised. The control circuit board 24 such as an inverter is disposed and accommodated in a space formed by the liquid crystal display device 21 and the rear housing 23.

  By setting it as the said structure, even when the basic thickness of the back housing | casing 23 is made thin, durability with respect to external force can be improved and weight reduction can be achieved.

Patent documents relating to the display device structure in which the shape of the rear housing is devised include the following.
JP 2000-311034 A

  Such a conventional display device structure has the following problems.

  (1) Although the strength of the rear housing has increased by providing a step in the flat part, it is in the direction of further decreasing strength from the standpoint of weight reduction by thinning the housing. Therefore, further strength improvement is necessary.

(2) Although the overall strength of the back casing is ensured, it is necessary to take some degree wide between step from design point of view, the plane portion above (A casing at the center in particular Figure 3 of the back casing When pressed locally by an external force from (direction), a phenomenon occurs in which the rear housing is bent inward. As a result, the control circuit board or the like disposed in the space formed in the central portion is pressurized, and these further apply a load to the internal liquid crystal display device. In addition, components that break due to pressure, such as transformers and coils, are mounted on the control circuit board such as an inverter. At this time, along with the destruction of these components, the components in the liquid crystal display device It will cause friction and damage the part.

  (3) When the back casing is die cast or the like, there is a method of reinforcing only by increasing the thickness of the rising portion of the step, but if the difference in thickness is large, the balance of hot water flow is lost and molding becomes impossible. In addition, when the back casing is a metal plate press work, partial thickness reinforcement cannot be performed. In any case, when the thickness is increased as it is to increase the strength, the weight of the rear casing increases, which is contrary to the direction of thin and light portable information processing apparatus.

  The present invention is in a control circuit board such as an inverter disposed between a liquid crystal display device and a back housing or in a liquid crystal display device, which is resistant to local external force while reducing the weight increase of the back housing. An object of the present invention is to provide a display device structure capable of protecting components.

In order to solve this problem, a display device structure according to the present invention is a display device structure in which a display device is housed by a display surface side housing and a back housing that protects the back surface of the display device, and includes a first reinforcement. A back plate is provided with a reinforcing plate having a flat plate portion and a second reinforcing plate flat portion, and a reinforcing plate rising portion provided between the flat plate portions, and a step is provided on both flat portions. The first casing of the rear casing has a shape having a second casing plane section provided with a step with the first casing plane section on each side of the first casing plane section. The first reinforcing plate plane portion and the second reinforcing plate plane portion of the first and second reinforcing plates, respectively, on the inner surface sides of the casing flat portion and the second casing flat portions on both sides thereof, Secure the back of the reinforcing plate and the rear housing riser with a gap between them. Body is prepared by attaching the reinforcing plate to.

  According to the display device structure of the present invention, when aiming at weight reduction by making the casing thinner, it prevents the strength reduction of the rear casing, which is a problem, and has a stronger structure, such as an inverter control circuit board. An advantageous effect is obtained in that it is possible to prevent and protect a load from being applied to a component that is weak against pressurization and a component in the liquid crystal display device.

The present invention is a display device structure in which a display device having a display surface on the front surface is accommodated by a display surface side housing and a rear housing that protects the back surface of the display device, and includes a first reinforcing plate flat surface portion and a first reinforcing plate plane portion. A first reinforcing plate and a second reinforcing plate provided with a difference in level between the first reinforcing plate flat portion and the second reinforcing plate flat portion. includes a reinforcing plate, the shape of the protective surface of the rear housing to protect the rear surface of the display device includes a first housing planar portion and between the first via each on either side casing standing up portions And a second casing plane portion provided with a level difference, and the inner surface side of the first casing plane portion of the rear casing and one of the second casing plane portions. On the inner surface side, the first reinforcing plate plane portion and the second reinforcing plate plane portion of the first reinforcing plate are connected to the inner surface side and the other side of the first housing plane portion. On the inner surface side of the second case flat portion, the first reinforcing plate planar portion of the second reinforcing plate and the second reinforcing plate planar portion, housing standing up part of the rear housing and the reinforcing plate rising portion The display device structure is characterized in that each reinforcing plate is attached to the rear case by being fixed in a state of being spaced apart from each other, and between the rising portion of the reinforcing plate and the rising portion of the case. By attaching a reinforcing plate to the rear housing in a state where there is an interval, the strength of the rear housing can be increased.

Further, the present invention is provided at a position substantially symmetrical to the second case flat portion and housing the rising portion of the rear housing this back casing on either side of the first housing planar portion, and reinforcing It is characterized in that the plates are attached to each other, and stress such as torsion is hardly generated in the rear housing.

Further, the present invention is characterized in that the reinforcing plate is attached to the rear case so that the case rising portion and the reinforcing plate rising portion are substantially parallel, and the case rising portion is uniformly reinforced. Has the effect of being able to

Further, according to the present invention , the interval between the housing rising portion and the reinforcing plate rising portion is larger than the step between the inner surface side of the first housing flat surface portion and the inner surface side of the second housing flat surface portion, and It is characterized by being no more than twice the level difference, and has the effect of being strong against an external force applied to the convex portion raised above the rear casing plane, that is, on the rear side .

Further, according to the present invention, the control circuit board for controlling the display device is disposed between the display device and the first housing flat surface portion of the rear housing, and between the reinforcing plates respectively attached to the rear housing. As a result, there is little deflection of the rear casing, and it has an effect that the control circuit board can be protected and also components in the display device can be protected.

  Embodiments of the present invention will be described below with reference to FIGS.

(Embodiment 1)
FIG. 1 is an exploded perspective view showing the structure of a display device according to an embodiment of the present invention, and FIG. 2 is a sectional view. In the figure, 1 is a liquid crystal display device, 2 is a display surface side housing of the liquid crystal display device 1, and the liquid crystal display surface portion is an opening. 3 is a rear housing for protecting the liquid crystal display device 1 and the like from an external force and located on the back side of the liquid crystal display device 1, and 4 is an FL tube (not shown) for the backlight of the liquid crystal display device 1. a control circuit board, such as an inverter that to supply current. A reinforcing plate 5 reinforces the back housing 3. Reinforcing plates 5 are attached to the respective back casing with intervals L1 between the inner side of the rear housing 3 of the casing rising portion 3c and the reinforcing plate rising portion 5c.

The rear housing 3 is made of a molded product such as magnesium alloy in terms of weight reduction and strength, has a substantially rectangular shape, and has a housing flat surface portion 3b having a substantially parallel step between the housing flat surface portions 3a. Are provided at symmetrical positions via the housing rising portion 3c. Further, the arrangement position of the reinforcing plate 5 is larger than the step L2 between the inner side and the housing flat portion 3 b the inner surface side of the interval L1 is housing flat portion 3a, and the strength is at 2 times the level difference L2 Desirable above. The inclination of the casing rising portion 3c providing a step on the housing flat portion 3a and the housing flat portion 3b, 45 to 90 ° with respect to the housing flat section 3a or the housing flat portion 3b of the plane, the moldability And desirable in terms of strength. The optimum numerical value is determined based on the overall size, thickness, weight, strength, etc. of the display device structure.

In the reinforcing plate 5, the reinforcing plate flat surface portion 5a and the reinforcing plate flat surface portion 5b are fixed to the inner surface side of the housing flat surface portion 3a and the housing flat surface portion 3b of the back housing 3, respectively . Accordingly, the reinforcing plate rising portion 5c that forms a step between the reinforcing plate flat portion 5a and the reinforcing plate flat portion 5b is substantially parallel to the case rising portion 3c of the rear case 3.

The control circuit board 4 such as an inverter has a space where the housing rising portion 3c is reinforced by the reinforcing plate 5 , that is, between the display device 1 and the housing flat surface portion 3a of the back housing 3, and the back surface thereof. Ru Tei is arranged housed between the reinforcing plate 5 attached respectively to the housing 3.

  The display device structure of the present embodiment configured as described above will be described.

Since the rear housing 3 is reinforced by the reinforcing plate 5 at each of the housing rising portions 3c , the surface strength is greatly increased as compared with the conventional mouth structure . In particular, the vicinity of the housing rising portion 3c is strong. Thereby, even if an external force is applied from above the flat portion of the rear housing (in the direction of arrow B in FIG. 1 ), there is almost no deflection. For this reason, even if the control circuit board 4 such as an inverter in which a component weak to pressurization is mounted between the display device 1 and the housing flat surface portion 3a , the control circuit board 4 is pressed. There is no deformation and no load is applied to the display device 1, and no damage or scratches are caused on the components that are weak to the pressure mounted on the control circuit board 4 itself or in the display device 1.

  Further, since the housing rising portion 3c and the reinforcing plate 5 are provided at symmetrical positions on the rear housing 3, stress such as torsion hardly occurs on the rear housing 3.

In this way, by providing the interval (space) between the reinforcing plate and the housing rising portion of the back casing, albeit slight weight increase due to reinforcement plates, the back casing as compared to the weight gain A significant improvement in strength can be achieved.

  In the present embodiment, the rear housing is a molded product such as a magnesium alloy. However, the material is not particularly limited, and a metal plate may be pressed instead of the molded product.

When the display device structure of the present invention aims to reduce the weight by reducing the thickness of the housing, the strength of the rear housing, which is a problem, is prevented by the reinforcement plate to reduce the strength, making the structure stronger and pressurizing Display device structure of an electronic apparatus having a flat display device such as a portable information processing device that can prevent and protect a load applied to a control circuit board on which a weak component is mounted or a component in the display device Useful as.

The disassembled perspective view which shows the display apparatus structure of one embodiment of this invention Sectional drawing of the display apparatus structure of one embodiment of this invention The perspective view which shows the external appearance of the conventional display apparatus structure Sectional view showing the structure of a conventional display device

DESCRIPTION OF SYMBOLS 1 Liquid crystal display device 2 Display surface side housing | casing 3 Back surface housing 3a, 3b Case plane part 3c Case rising part 4 Control circuit board 5 Reinforcement plate 5a, 5b Reinforcement plate plane part 5c Reinforcement plate rise part

Claims (5)

A display device structure in which a display device having a display surface on the front surface is housed by a display surface side housing and a back housing that protects the back surface of the display device,
A first reinforcing plate plane portion and a second reinforcing plate plane portion are provided, and a step is provided in the first reinforcing plate plane portion and the second reinforcing plate plane portion by providing a reinforcing plate rising portion therebetween. A first reinforcing plate and a second reinforcing plate;
The shape of the protective surface of the rear housing to protect the rear surface of the display device, a first respectively a case flat portion to the both sides while through the housing standing up portion said first housing planar portion And a shape having a second housing flat portion provided with steps,
The first reinforcing plate plane portion and the second reinforcing plate plane of the first reinforcing plate are provided on the inner surface side of the first casing plane portion of the rear casing and on the inner surface side of one second casing plane portion. The first reinforcing plate plane portion and the second reinforcing plate plane portion of the second reinforcing plate on the inner surface side of the first casing plane portion and the inner surface side of the other second casing plane portion. by fixing in a state in which each spaced between the housing standing up part of the rear housing and the reinforcing plate rising section, the display device structure is characterized in that attached to the reinforcing plate to the rear housing . The second housing planar portion and the housing standing up portions located on opposite sides of the first housing planar portion of the rear housing, that provided substantially symmetrically in between the first housing planar portion The display device structure according to claim 1. In the state the reinforcing plate is attached to the back casing, the display device structure according to claim 1 or claim 2, wherein the each casing rising portion and the reinforcement plate rising portion is so substantially be parallel. The interval between each housing rising portion and the reinforcing plate rising portion is larger than the step between the inner surface side of the first housing flat surface portion and the inner surface side of each second housing flat surface portion, and is twice the step height. The display device structure according to claim 1, wherein the display device structure is as follows. The control circuit board for controlling the display device is arranged between the display device and the first housing plane portion of the rear housing, and between the reinforcing plates respectively attached to the rear housing. The display device structure according to any one of claims 1 to 4.

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