JP2013029636A - Image display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an image display device arranging an infrared ray light receiving element or the like in the inner part of waterproof construction.SOLUTION: An image display device includes: a display panel 13 for displaying an image; a transparent protective member 22 for covering the front surface of the display panel; a housing 20 for covering at least the side surfaces and the rear surface of the display panel; and a light receiving element 44 which is housed in the inner part of the housing and light-receives an operation signal from a remote controller. The light-receiving element is arranged on the inner surface side of the transparent protective member and in the outer peripheral vicinity of the display panel.

Description

  The present invention relates to an image display device, and more specifically to an image display device having a waterproof structure and operable from the outside by infrared rays or the like.

  In an image display device such as a liquid crystal display device, if water or dust adheres to an internal electronic component, a malfunction of the device may occur. Therefore, it is necessary to waterproof these. In particular, an image display device used outdoors is required to have higher waterproofness than indoors, and electronic parts and the like are accommodated inside a waterproof structure (for example, see Patent Document 1).

JP 2008-277957 A

  There is a demand for an image display apparatus that may be used outdoors to enable remote control operation as in the case of an image display apparatus used at home. However, conventionally, since the light receiving element is provided outside the waterproof structure, the light receiving element and its substrate have to be waterproofed separately.

  An object of the present invention is to provide an image display apparatus in which an infrared light receiving element or the like is provided inside a waterproof structure.

The image display device of the present invention is
A display panel that displays images,
A transparent protective member covering the front surface of the display panel;
A casing covering at least a side surface and a back surface of the display panel;
A light receiving element that is received inside the housing and receives an operation signal from a remote control device;
The light receiving element is arranged on the inner surface side of the transparent protective member and in the vicinity of the outer periphery of the display panel.

According to the image display device of the present invention, since the light receiving element is disposed inside the transparent protective member and in the vicinity of the outer periphery of the display panel, it is not necessary to provide the light receiving element with a separate waterproof structure, and the number of components and cost are increased. The increase can be suppressed.
In addition, since the light receiving element is disposed close to the transparent protective member, light emitted from the outside toward the light receiving element is transmitted through the transparent protective member. Accordingly, it is possible to prevent the performance degradation caused by providing the light receiving element inside the transparent protective member.

FIG. 1 is an exploded perspective view of an image display apparatus according to an embodiment to which the present invention can be applied. FIG. 2 is a longitudinal sectional view in the vicinity of the element unit. FIG. 3 is a cross-sectional view taken along line 3-3 in FIG. FIG. 4 is an exploded perspective view of the vicinity of the element unit.

An embodiment of the present invention will be specifically described with reference to the drawings.
In the following, an embodiment applied to a liquid crystal display device (10) as an image display device will be described, but the image display device is not limited to a liquid crystal display device (10) using a liquid crystal display panel (13), and plasma is used. The present invention can also be applied to a display device using a display panel.

  FIG. 1 is an exploded perspective view of the liquid crystal display device (10). As shown in the figure, the liquid crystal display device (10) includes a liquid crystal unit (12) having a liquid crystal display panel (13) for displaying an image on the front surface and an electronic component unit (14) for performing various controls of the liquid crystal unit (12). Is surrounded by a housing (20).

The display panel (13) (see FIG. 2) is covered with a transparent panel (22) whose front surface is a transparent protective member. In the following, a glass panel is exemplified as the panel (22), but a plastic or acrylic one can also be used.
At least the side surface and the back surface of the display panel (13) are covered with a casing (20) including a side casing (24) having a rectangular cross section and a rear panel (26) that closes the side casing (24) from the back surface side. The glass panel (22) and the side casing (24), the side casing (24) and the rear panel (26) are connected with the packing (28) sandwiched between them, and the waterproof structure (30) (Fig. 2). In the illustrated liquid crystal display device (10), the side casing (24) and the rear panel (26) are made of an aluminum alloy.

  A configuration in which the display panel (13) and the glass panel (22) are integrated by bonding can be exemplified.

  In the lower left front of the liquid crystal display device (10), elements (42), (44), and (46) that receive or emit light are arranged inside the glass panel (22) and in the vicinity of the outer periphery of the display panel (13) ( (See FIG. 3). This position is not limited to the lower left of the front.

  As shown in FIGS. 3 and 4, as the elements (42), (44), and (46), as shown in FIGS. 3 and 4, the LED (42) that is a light emitting element, the light receiving element (44) that receives infrared rays, and the brightness. The illuminance sensor (46) to detect is illustrated. The LED (42) displays the power supply state of the liquid crystal display device (10) and the light receiving element (44) receives infrared rays from the remote control device for operating the liquid crystal display device (10). The illuminance sensor (46) is for detecting the brightness of the outside and adjusting the brightness of the display panel (13).

  Each element (42) (44) (46) is arranged on a circuit board (48) to constitute an element unit (40). The element unit (40) is connected to the liquid crystal unit (12) and the electronic component unit (14) by a flexible substrate or the like.

As shown in FIGS. 2 and 4, the element unit (40) is disposed inside the waterproof structure (30) rather than the packing (28), and the elements (42), (44) and (46) are arranged in the glass panel (22). It arrange | positions so that it may oppose.
As a result, it is not necessary to provide a separate waterproof structure for the element unit (40), and the wiring between the element unit (40) and the liquid crystal unit (12) or electronic component unit (14) is also waterproof (30). The waterproof property of the waterproof structure (30) is not lowered by these.
In addition, since the glass panel (22) can transmit light, it is possible to prevent performance degradation caused by providing the elements (42), (44), and (46) inside the waterproof structure (30).

  As a specific example, as shown in FIGS. 2 to 4, the elements (42), (44), and (46) are interposed between the glass panel (22) and lenses (52), (54), and (56). Can be arranged. The lens (52) disposed on the LED (42) is for converging light emitted from the LED (42) through the glass panel (22), and the lenses (54) and (56) are arranged on the glass panel from the outside. This is for converging the light entering the elements (44) and (46) through (22).

  In the illustrated embodiment, the outer periphery of the glass panel (22) is held by a frame. An example of the frame is a cover (60) made of a light-impermeable resin. The cover (60) extends to the upper side of the elements (42), (44) and (46) on the front surface of the glass panel (22) as shown in FIG.

  As shown in FIGS. 2 to 4, the cover (60) has a light path between the elements (42) (44) (46) and the outside at a position facing the elements (42) (44) (46). The opening (62) (64) (66) is formed so as not to shut off, and the back side of the cover (60) is recessed on the periphery of the opening (62) (64) (66) (68). Is formed. The base (71) of the lens unit (70) whose back is in contact with the glass panel (22) is fitted into the recess (68).

  In the lens unit (70), a plurality of lenses (72), (74), and (76) that fit into the openings (62), (64), and (66) protrude from the base (71). The lenses (72), (74), and (76) are processed so that the exposed surfaces from the openings (62), (64), and (66) are rough surfaces. The light emitted from can be received and emitted at a wider angle (indicated by α in FIG. 3). When the lenses (72), (74), and (76) are rough surfaces, α in FIG. 3 is about 45 °.

  In the liquid crystal display device (10) having the above configuration, the light of the LED (42) is converged by the lens (52) and passes through the glass panel (22) and the lens (62) as shown by an arrow A in FIG. Then, the light is diffused on the surface of the lens (62) and emitted to the outside.

  Further, as shown by an arrow B in FIG. 3, the infrared rays from the remote control device pass through the lens (64), the glass panel (22), and the lens (54) and are converged to reach the light receiving element (44). At this time, infrared rays can be received at a wide angle by making the lens (64) rough.

  Similarly, the light from the outside passes through the lens (66), the glass panel (22), and the lens (56) and is converged and reaches the illuminance sensor (46) as shown by an arrow C in FIG. At this time, external light can be detected at a wide angle by making the lens (66) rough.

  According to the above configuration, the elements (42), (44), and (46) are placed inside the waterproof structure (30), so there is no need for a separate structure for waterproofing the elements (42), (44), and (46), etc. Therefore, there is an advantage that increase in the number of parts and cost increase can be suppressed.

  INDUSTRIAL APPLICABILITY The present invention is useful as an image display device in which an infrared light receiving element or the like is provided inside a waterproof structure.

(10) Liquid crystal display device
(13) Display panel
(20) Housing
(22) Glass panel (transparent protective member)
(30) Waterproof structure
(42) Element (LED)
(44) Element (light receiving element)
(46) Element (illuminance sensor)

Claims (3)

A display panel that displays images,
A transparent protective member covering the front surface of the display panel;
A casing covering at least a side surface and a back surface of the display panel;
A light receiving element that is received inside the housing and receives an operation signal from a remote control device;
An image display device, wherein the light receiving element is disposed on the inner surface side of the transparent protective member and in the vicinity of the outer periphery of the display panel. A frame for gripping the transparent protective member,
An opening provided in the frame; and
The image display device according to claim 1, further comprising a lens that is fitted into the opening and guides light from the remote control device to a light receiving element.   The image display device according to claim 2, wherein the lens has a rough outer surface.

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