JPH09322277A - Information display device - Google Patents

Abstract

PROBLEM TO BE SOLVED: To obtain the structure to prevent dust by configuring the display device with a main body section having a display section displaying information at part of its outer face and with a cover section covering a wider range than the display section and through which display information is transparent so as to provide close positioning structure. SOLUTION: When a front cover 3a and a metallic case 40 are respectively positioned, since a 1st projection 31 is closely interposed to its gap 300 over the entire circumference of a display section 4a, dust in the case body 1a does not reach the display section 4a. The similar effect is obtained by a 2nd projection 32 so as to prevent troublesome dust and no taping is required to simplify the assembling. The 1st projection 31 is formed integrally with a stationary cover 3a, then the assembling and installation are simplified. Since a liquid crystal display device 4 is screw-fastened to the stationary cover 3a, the dust prevention is maintained.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an information display device,
In particular, the present invention relates to an information display device in which a display unit that can display information is covered with a cover body that can transmit the display information.

[0002]

2. Description of the Related Art FIG. 6 shows a conventional remote controller for a water heater.
FIG. 7 is a perspective view of (2), and FIG. 7 is a remote control device (2) of FIG. 6.
FIG. 7 is a sectional view taken along line VII-VII of FIG. As shown in the figure, the remote control device (2) has a hot water supply operation unit (24) for remotely controlling hot water supply operation of a water heater body (not shown) on its front surface.
A hot water supply display section (21) for displaying the operation mode of the water heater main body by the hot water supply operation section (24) is exposed.

The casing (200) of the remote control device (2)
Is a dish-shaped case main body (2a) with a front opening that accommodates the liquid crystal display (4) that constitutes the hot water supply display unit (21), the main body unit (240) of the hot water supply operation unit (24), etc. It comprises a cover body (3) for closing the open end of (2a). The cover body (3) is provided with a transparent portion (39) which can transmit display information on the display portion (4a) provided on a part of the front surface of the liquid crystal display (4). The transparent portion (39) allows the display information to be viewed from the outside of the cover body (3).

The front surface of the liquid crystal display (4) and the cover body (3)
A rubber tape (9) arranged in such a manner as to surround the display section (4a) over the entire circumference is closely interposed in the gap (300) between the tape and the display section (4a). In this case, since the periphery of the display portion (4a) in the gap (300) is sealed by the tape (9) over the entire circumference, after assembling the remote control device (2), Dust in the casing (200) does not move to the surface of the display unit (4a). Therefore, the cover body after the assembly
The inconvenience that the display information on the display unit (4a) viewed from the outside of (3) becomes difficult to see due to the dust is prevented.

[0005]

However, in this conventional technique, the above-mentioned tape (9) has to be attached so as to form a frame surrounding the display portion (4a), and the attaching work is required. There was a problem that it was troublesome. Therefore, the workability of assembling the remote control device (2) is not good. Further, when the display portion (4a) has a rectangular shape, the tape (9) attached in a rectangular shape is cut and attached on each side, but a gap is apt to occur at the connecting portion between the sides, The dustproof performance was not reliable.

It is an object of the present invention to provide an information display device in which the means for suppressing the arrival of dust on the display portion can be easily assembled.

[0007]

According to a first aspect of the present invention, there is provided a main body portion having a display portion capable of displaying information on a part of an outer surface, and a range wider than the display portion on the outer surface. An information display device, comprising: a cover body that covers the display body and is capable of transmitting display information on the display unit, wherein the display is provided on the cover body side of the main body section or on the main body section side of the cover body. An annular convex portion that is integrally formed in a projecting state in a manner that it can be surrounded over the entire circumference, and that its tip corresponds to a position on the outer peripheral side of the peripheral edge of the display portion over the entire circumference,
Positioning means for positioning the main body and the cover body relative to each other so that the tip of the annular convex portion is in contact with the main body or the cover body over the entire circumference. ] Is characterized.

In this structure, the cover body covers a wider area than the display portion on the outer surface of the main body portion. In this covering state, the display portion is surrounded over the entire circumference by the cover-body side of the main body portion or the annular convex portion integrally formed in a protruding state on the cover body side of the cover body. It becomes a state. Then, when the main body portion and the cover body are mutually positioned by the positioning means, the tip end of the annular convex portion is in contact with the main body portion or the cover body over the entire circumference.

In this state, around the display portion in the gap formed between the main body portion and the cover body,
The annular protrusions are closely arranged over the entire circumference.
Here, as in the second aspect of the invention, it may be one that "further comprises a fixing means capable of fixing the main body portion and the cover body to each other". Further, in the description of claim 1, "a cover body capable of transmitting display information on the display section" specifically means, "the cover body is provided on the display section" as in the invention of claim 3. A frame-shaped first with a central hole of substantially the same size
And a second cover that is attached to the first cover so as to close the central hole and has a light-transmitting property. ” In this case, the second cover covers the display section, but since the second cover has a light-transmitting property, the display information on the display section can be transmitted to the outside of the cover body.

According to the third aspect of the present invention, there is provided a fourth aspect.
As in the invention described above, the “annular convex portion is integrally formed on the outer peripheral side of the peripheral edge portion of the central hole in the first cover”. According to the invention of claim 5, the "first
The cover is integrally formed with the peripheral edge of the central hole in the cover so as to project toward the display unit side over the entire circumference, and the tip end thereof is the inner peripheral side of the peripheral edge of the display unit over the entire circumference. It may further include a second annular convex portion located in the vicinity.

[0011]

As described above, according to the first aspect of the invention, the cover body covers the main body, and
When both of these are positioned by the positioning means,
The annular convex portion is densely provided over the entire circumference around the display portion in the gap formed between the main body portion and the cover body. Therefore, the arrival of dust on the display unit is suppressed.

Further, according to the coating and the positioning,
The means for suppressing the arrival of dust on the display portion can be assembled, and the tape attachment work is not required unlike the above-described conventional technique, so that the assembly is easy. And since the said annular convex part is integrally formed with the said cover body or the said main-body part, also in this point, the said assembly is easy.

Further, since the tip of the annular convex portion corresponds to the position on the outer peripheral side of the peripheral edge of the display portion over the entire circumference, the tip of the annular convex portion is positioned on the inner peripheral side of the peripheral edge. The arrival of the dust is further suppressed compared to the corresponding one. According to the invention of claim 2, the state in which the arrival is suppressed is reliably maintained by the fixing means.

According to the third aspect of the present invention, since the display information on the display section can be transmitted to the outside of the cover body through the second cover, the coverage area of the first cover cannot be seen from the outside. In that case, only the display information is visible to the outside, and the appearance of the information display device is improved. According to the fifth aspect of the present invention, the second annular convex portion also prevents the dust that has entered the gap from reaching the display portion, so that the arrival can be more reliably suppressed.

[0015]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, embodiments of the present invention will be described.
This will be described with reference to the drawings. [Embodiment] FIG. 1 is a perspective view of a remote controller with a television for a water heater according to an embodiment of the present invention, and FIG.
4 is a front view of the television device (1) of FIG. 1, FIG. 3 is a sectional view taken along the line III-III of the television device (1) of FIG.
FIG. 4 is an enlarged view of a main part of FIG. FIG. 5 is a front view of the liquid crystal display (4) of FIG.

The remote controller with a television shown in FIG. 1 is installed in a bathroom, and is used to remotely control the hot water supply operation of the television device (1) capable of displaying a television image in color and the water heater body (not shown). And a remote control device (2). [TV device (1)] The TV device (1) will be described below.

As shown in FIGS. 1 and 2, the casing (100) of the television device (1) is a rectangular box in which a liquid crystal display (4) and an operating portion (13) described later are built in so as to be exposed at the front. -Shaped case body (1a), except for the area where the below-mentioned protective cover (3b) that protects the liquid crystal display (4) and the operation buttons (13) are located. ), A front surface cover (3c) covering the entire front surface, and a rectangular box-shaped mounting base (1b) integrally formed so as to extend downward with respect to the case body (1a). A remote control device (2) described later is detachably attached to the front surface of the attachment base (1b).

* Case main body (1a) * As shown in FIG. 3, the case main body (1a) has the above liquid crystal display (4) capable of displaying a television image, and this liquid crystal display (4).
A synthesis circuit (16) that synthesizes a display signal for displaying a television image on the LCD and sends it to the liquid crystal display (4), and the case body
A control circuit (15) that outputs a signal to the synthesizing circuit (16) in response to an operation signal from the operation unit (13) provided on the front surface of (1a) is housed. The case body (1a) is made of synthetic resin having no light transmission property. Also, this case body
The (1a) is provided with a front wall (101) that closes the inside.

* Liquid crystal display (4) * As shown in FIGS. 3 to 5, the liquid crystal display (4) has a liquid crystal enclosed in a metal case (40) formed in a substantially rectangular box shape. A liquid crystal part (not shown) and a backlight (not shown) that illuminates the liquid crystal part from the back side are housed, and the liquid crystal part is opened from the rectangular opening (400) provided on the front surface of the metal case (40). Exposed. This exposed portion serves as a display portion (4a) capable of displaying the television image. The surface of the display portion (4a) is slightly recessed from the front surface of the metal case (40) by a thickness such as a plate thickness on the front surface side of the metal case (40).

Further, a plurality of holes (41) (41) having a constant depth recessed toward the back side are formed at the corners of the metal case (40) when viewed from the front side, Furthermore, these holes
(41) A plurality of through-holes (42) (42) coaxial with (41) and penetrating the back side are formed. These through holes (4
The diameters of 2) and 42 are smaller than those of the holes 41 and 41. * Fixed cover (3a) * The front wall (101) is provided with a rectangular opening (10) having a size substantially corresponding to that of the display section (4a). And
A certain range from the peripheral edge part (10a) of the opening (10) in the front wall (101) to the outer peripheral side is a display part (4) in front of the metal case (40).
It is a rectangular frame-shaped fixed cover (3a) covering the entire area on the outer peripheral side from a).

The back surface (30a) of the fixed cover (3a) (liquid crystal display
On the (4) side surface, an annular first convex portion (31) surrounding the display portion (4a) over the entire circumference is integrally formed in a protruding state. The first convex portion (31) is arranged at a position slightly outside the peripheral edge portion (10a) and slightly outside the peripheral edge of the display portion (4a). Also, the back surface (30a) is
It is parallel to the front of the metal case (40) and has the first protrusion (3
The cross section of 1) is formed in a rectangular shape that is upright with respect to the back surface (30a). Therefore, the tip surface of the first convex portion (31) corresponds to a position slightly on the outer peripheral side of the peripheral edge of the display portion (4a) (the position indicated by the alternate long and short dash line in FIG. 5).

In addition, on the peripheral edge portion (10a), the second convex portion (32) having a piece-shaped cross section that obliquely projects toward the display portion (4a) side and the inner peripheral side over the entire circumference. ) Is integrally formed. The tip of the second convex portion (32) is located near the inner peripheral side of the peripheral edge of the display portion (4a) over the entire circumference, and the rectangular opening (400) described above.
It is slightly inside (the position of the chain double-dashed line in FIG. 5).

On the back surface (30a), a plurality of bosses having a constant height are provided on the outer peripheral side of the first convex portion (31) and at a position facing each of the hole portions (41) (41). (37) (37) is projected. These bosses (37) (37) are large enough to be inserted into the holes (41) (41), and the back surface (30a) of these bosses (37) (37)
The protrusion height from the metal case (4) at the holes (41) (41)
The depth from the front of (0) and the back surface (30
It is set to a size that approximately matches the sum of the protrusion height from a). Further, these bosses (37) (37) have screw holes (not shown) which are recessed from the distal end surface toward the proximal end side.
Are formed.

A plurality of screws (5) (5) inserted from the back side of the metal case (40) are inserted into the through holes (42) (42). These screws (5) (5) are screwed into the screw holes of the bosses (37) (37) inserted in the hole portions (41) (41). Thereby, the liquid crystal display (4) is fixed to the fixed cover (3a). Further, on the surface of the fixed cover (3a) (the surface opposite to the liquid crystal display (4)), there is a recess (33) having the same size as the front of the metal case (40) and a certain depth. Are formed. The concave portion (33) is a fitting portion of the protective cover (3b) described later.

* Protective cover (3b) * The protective cover (3b) is a rectangular transparent synthetic resin plate having a size substantially matching the concave portion (33), and the protective cover fitted in the concave portion (33). (3b) and the fixed cover (3a) are bonded together by a rectangular frame-shaped adhesive sheet (30) interposed therebetween. Further, the protective cover (3b) is set to have a thickness that protrudes from the recess (33) when fitted into the recess (33). Furthermore, on the peripheral edge on the surface side of this protective cover (3b), a stepped portion cut out over the entire circumference is provided.
(34) is formed.

Since the protective cover (3b) is transparent, the television image displayed on the display unit (4a) is the television device.
It is visible from the outside of (1). * Surface cover (3c) * The front cover (3c) is a rectangular dish-shaped body made of synthetic resin that does not have optical transparency. Further, the surface cover (3c) is formed with an opening into which the protective cover (3b) can be just fitted and a hole into which an operation button of the operation section (13) can be inserted. A projecting portion (35) projecting toward the inner peripheral side over the entire circumference is formed on the peripheral edge of the opening. The protrusion (35) and the step (34) are set to engage with each other, and this engagement keeps the protective cover (3b) in a state where it cannot be pulled out in front of the television device (1). Has been done.

A concave part (17) is formed on the front surface of the case body (1a) so as to be concave over the entire circumference. The concave part (17) constitutes a wall. A plurality of ridges (18) (18) are formed on the peripheral wall portion perpendicular to the front wall (101) of the.
A plurality of engaging pieces (36) (3) that engage with the ridges (18) (18)
6) is projected on the back surface of the front cover (3c). By the engagement, the surface cover (3c) is fixed to the case body (1a).

* Other Configurations * Inside the case body (1a), there are provided a plurality of pillars (6) and (6) projecting from the outer periphery of the surface (30a) of the fixed cover (3a). A plurality of projecting pieces (71) (71) provided on the dish-shaped holding body (7) for accommodating the above-mentioned synthetic circuit (16) are in contact with the tip surfaces of these pillars (6) (6). So that the protruding pieces (71) (71) are pillars
(6) It is fixed to (6) with mounting screws (5a) and (5a).

Further, the case body (1a) is provided with a back plate (19) separable from its main body. [Assembling the TV device (1)] To assemble the TV device (1) having the above configuration, the liquid crystal display (4) is placed in the case body (1a) with the back plate (19) separated. Put in.
Then, with respect to the holes (41) (41) of the liquid crystal display (4),
Insert the bosses (37) (37) protruding from the fixed cover (3a),
The tips of the bosses (37) (37) are in contact with the bottom surfaces of the holes (41) (41).

In this state, the protruding height of the bosses (37) (37) is substantially equal to the sum of the depth of the hole portions (41) (41) and the protruding height of the first convex portion (31). As described above, the tip of the first convex portion (31) is in contact with the portion of the front side of the metal case (40) on the outer peripheral side of the display portion (4a) over the entire circumference. At, the fixed cover (3a) and the liquid crystal display (4) are positioned relative to each other.

In this positioning state, the screws (5) and (5) are inserted into the through holes (42) and (42), and these screws (5) and (5) are screwed into the bosses (37) and (37). Then, the liquid crystal display (4) is fixed to the fixed cover (3a) by these screws (5) and (5).
After this, the protective cover (3b) is fitted into the recess (33) of the fixed cover (3a), but immediately before that, the adhesive sheet (30) is fixed to the fixed cover (3).
Paste it on (3a). The adhesive sheet (30) has a structure in which an adhesive is applied in advance on both surfaces thereof. Therefore, when the protective cover (3b) is fitted into the recess (33), this protective cover (3b) is
(3b) is fixed to the fixed cover (3a) by adhesion with the adhesive sheet (30). In addition, adhesive sheet
The outer peripheral dimension of the (30) is substantially matched with the peripheral dimension of the recess (33). Therefore, it is easy to position the adhesive sheet (30) with respect to the fixed cover (3a). This allows the adhesive sheet (30)
Can be easily attached to the fixed cover (3a). or,
The appearance of the adhesive sheet (30) seen through the protective cover (3b) is improved.

Subsequently, the surface cover (3c) is attached to the case body (1a).
Cover the front of the case with the engaging pieces (36) (36) on the ridge of the case body (1a).
(18) When engaged with (18), the surface cover (3c) is fixed to the case body (1a). In this state, the protrusion of the front cover (3c) (35) is not supported by the step of the protective cover (3b).
Since the (34) engages in the retaining state, the protective cover (3b)
Will be fixed more securely.

On the other hand, the projecting pieces (71) (71) of the holding body (7) containing the composite circuit (16) are screwed to the pillar bodies (6) and (6).
Then, the back plate (19) is screwed to the main body of the case body (1a). Immediately before this screwing, an adhesive is applied to the fitting portion between the main body portion and the back plate (19). With this adhesive,
The fitting portion is sealed in a watertight state. The front cover
The adhesive is also applied to the fitting portion between the tip of the peripheral wall of (3c) and the case body (1a). As a result, this fitting portion is also sealed in a watertight state. These seals keep the inside of the case body (1a) watertight.

In this case, when the fixed cover (3a) and the metal case (40) are in the above-mentioned positioning state, the fixed cover (3a)
The first convex portion (31) is closely arranged over the entire circumference around the display portion (4a) in the gap (300) between the metal case (40) and the metal casing (40). Therefore, the inconvenience that dust inside the case body (1a) reaches the display section (4a) after the case body (1a) is assembled is suppressed. Therefore, the television image seen from the outside of the television device (1) through the protective cover (3b) is good for a long time. The first convex portion (31) may have, for example, a semicircular cross section instead of the above rectangular cross section.

Further, the second convex portion (32) also prevents the dust in the case body (1a) from reaching the display portion (4a). Therefore, the above-mentioned inconvenience is suppressed more reliably. In this case, unlike the conventional technique described above, the work of sticking the tape is not necessary, so that the above-mentioned means for preventing the arrival of dust is easily assembled. Also, the television device (1) can be easily assembled.

Further, since the first convex portion (31) is integrally formed with the fixed cover (3a), the assembling and the assembling are easy also in this respect. The first convex portion (31) is integrally formed on the front surface of the metal case (40) on the outer peripheral side of the display portion (4a), and the tip thereof is the back surface (3) of the fixed cover (3a).
It may be in contact with 0a). This is a liquid crystal display
Since (4) is screwed to the fixed cover (3a), the prevention of the arrival of dust is reliably maintained.

Further, the protective cover (3b) covering the above-mentioned display portion (4a) is transparent, and the entire outer peripheral side of the protective cover (3b) in the main body case (1a) is light transmissive. It is covered by the surface cover (3c) which does not have. Therefore, only the television image displayed on the display unit (4a) can be seen from the outside of the television device (1), and the appearance of the television device (1) is improved. Note that the protective cover (3b) may not be transparent as long as it can transmit the television image, and may be colored, for example.

In this case, the liquid crystal display (4) is the "main body" described in claim 1 and the display (4)
a) is the "display unit" according to claim 1. The fixed cover (3a) is the "first cover" described in claim 3, the opening (10) is the "center hole" described in claim 3, and the peripheral edge is The part (10a) is the "peripheral part" described in claims 4 and 5, and the protective cover (3
b) is the “second cover” described in claim 3, and the fixed cover (3a) and the protective cover (3b) correspond to the “cover body” described in claim 1.

The first convex portion (31) is the "annular convex portion" described in claim 1 above, and the second convex portion (32) is the "annular convex portion" described in claim 5 above. The second annular convex portion ". Furthermore, the bosses (37) (37) and the hole portions (41) (41) are the "positioning means" described in claim 1 and the through hole (42).
The (42) and the screws (5) and (5) are the "fixing means" described in claim 2.

Further, the above television device (1) corresponds to the above-mentioned "information display device". [Remote control device (2)] The above remote control device (2) has a flat rectangular parallelepiped shape with a small front-rear width, and its casing (20).
(0) Inside, there is a hot water supply operation unit (24) for operating the water heater main body so as to be exposed on the front surface, and a hot water supply display unit (2) for displaying the operation mode of the water heater main body by the operation.
1) is equipped.

Although not shown, the hot water supply display section (21) is similar to the above-mentioned television apparatus (1) in that the liquid crystal display (4),
It is composed of a fixed cover (3a), a first convex portion (31), a second convex portion (32), a protective cover (3b), and a surface cover (3c). Therefore, this remote control device (2) also has the same actions and effects as those of the above television device (1). The remote control device (2) in this case is also the "information display device" already described.
Is equivalent to

The remote control device (2) is a television device.
It is screwed to the mounting base (1b) of (1). A through hole (14) is provided in the front wall of the mount (1b).
A cable for electrically connecting the remote control device (2) and the television device (1) is inserted through 4). An annular packing that surrounds the through hole (14) over the entire circumference is tightly interposed between the remote control device (2) and the mounting base (1b).
As a result, the periphery of the through hole (14) is sealed in a watertight state over the entire circumference, and the inside of the mounting base (1b) is maintained in a watertight state.

[Brief description of drawings]

FIG. 1 is a perspective view of a remote controller with a TV for a water heater according to an embodiment of the present invention.

FIG. 2 is a front view of the television device (1) shown in FIG.

FIG. 3 is a sectional view taken along the line III-III of the television device (1) in FIG.

FIG. 4 is an enlarged view of a main part of FIG.

5 is a front view of the liquid crystal display (4) of FIG.

FIG. 6 is a perspective view of a conventional remote controller (2) for a water heater.

7 is a sectional view of the remote control device (2) of FIG. 6 taken along line VII-VII.

[Explanation of symbols]

 (1) ・ ・ ・ TV device (4) ・ ・ ・ Liquid crystal display (4a) ・ ・ ・ Display section (3a) ・ ・ ・ Fixed cover (3b) ・ ・ ・ Protective cover (31) ・ ・ ・ First convex Part (32) ... Second convex part (37) ... Boss (41) ... Hole

Front page continuation (51) Int.Cl. ⁶ Identification code Office reference number FI Technical display location G06F 1/16 G09F 9/00 305 G09F 9/00 305 G06F 1/00 312G

Claims (5)

[Claims] 1. A main body part having a display part capable of displaying information on a part of an outer surface thereof, and a cover body covering a wider area than the display part on the outer surface and capable of transmitting display information on the display part. And an information display device comprising: a main body part on the cover body side, or on the main body part side of the cover body, in a projecting state in such a manner that the display part can be surrounded over the entire circumference. An annular convex portion that is formed and that corresponds to a position where the tip is on the outer peripheral side of the peripheral edge of the display portion over the entire circumference, and the tip of the annular convex portion is the entire circumference with respect to the main body portion or the cover body. An information display device, comprising: positioning means capable of mutually positioning the main body portion and the cover body so as to be in contact with each other. 2. The information display device according to claim 1, further comprising fixing means for fixing the main body portion and the cover body to each other. 3. The cover body is a frame-shaped first cover having a central hole of a size substantially matching the display portion, and the cover body is attached to the first cover so as to close the central hole and transmits light. An information display device according to claim 1, further comprising a second cover having a property. 4. The annular projection is integrally formed on the outer peripheral side of the peripheral edge of the central hole in the first cover.
Information display device described in. 5. The first cover is integrally formed with the peripheral portion of the central hole so as to project toward the display portion over the entire circumference thereof, and the tip thereof is formed over the entire circumference. The information display device according to claim 3, further comprising a second annular convex portion located near the inner peripheral side of the peripheral edge of the display portion.