JP4915215B2 - Television equipment - Google Patents

Description

  The present invention relates to a television device.

A plate-like antenna used by being connected to a television apparatus has been proposed (see Patent Documents 1 to 3).
These plate-like antennas are attached to the support column using a dedicated support, or are mounted on a mounting surface using a stand.
JP-A-8-78923 JP-A-9-162613 JP-A-11-127007

Since such an antenna occupies a small space, it can be considered that the antenna is used by being attached to the rear surface of a television device having a rectangular plate-like housing.
However, when an antenna is attached to the rear surface of the television device, there is no particular problem in an installation environment in which radio waves travel from the rear of the housing toward the antenna, but radio waves travel from the front of the housing toward the antenna. In such an installation environment, there is a concern that radio waves may be disturbed by a display device provided in the housing, a frame made of an electronic component or a conductive material, and the like, resulting in a disadvantage in securing the antenna gain.
The present invention has been devised in view of the above circumstances, and an object of the present invention is to provide a television apparatus that is advantageous in securing the gain of an antenna even when a plate-like antenna is attached to the rear surface of a housing. There is to do.

In order to achieve the above-described object, a television device of the present invention includes a rectangular plate-shaped housing, a display surface of a display device disposed so as to face the front opening of the housing, and radio waves of television broadcasting. A plate-shaped antenna for receiving, a first position that is provided between the housing and the antenna, and that is positioned outside the contour of the housing when viewed from the front; and And a support mechanism that supports the antenna in a second position that is positioned inside the outline of the housing so that the posture can be changed, and the support mechanism is a slide that is coupled to the rear surface of the housing so as to be movable up and down. A member including a spherical bearing, a connecting portion for connecting the slide member and the antenna, and a lower limit position and an upper limit position of the slide member and engaging the slide member at those positions. With a stop The antenna is in the first position at the upper limit position of the slide member, and in the second position at the lower limit position of the slide member, and can be tilted and pivoted about the center of the spherical bearing by the connecting portion. It can be characterized that you have been supported.

  According to the present invention, in an installation environment in which radio waves travel from the rear of the housing toward the antenna, the radio waves can be efficiently guided to the antenna by setting the antenna to the first and second positions. In an installation environment where the radio wave travels from the front of the housing toward the antenna, the antenna is set to the first position so that the radio wave can be efficiently guided to the antenna without being disturbed by members inside the housing. be able to.

(First embodiment)
Next, a first embodiment of the present invention will be described with reference to the drawings.
FIG. 1 is a front view showing a state where the antenna 22 of the television apparatus 10 according to the first embodiment is located at the second position (b), and FIG. It is a front view which shows the state located in a).
FIG. 3 is a side view showing a state where the antenna 22 of the television apparatus 10 is located at the second position (b), and FIG. 4 is a diagram illustrating the antenna 22 of the television apparatus 10 being at the first position (a) and the second position. FIG. 5 is a side view showing a state in which the antenna 22 of the television apparatus 10 is located at the first position (A).
As shown in FIGS. 1 and 3, the television device 10 includes a display panel 12, a rectangular plate-shaped housing 14 that forms an exterior of the television device 10, and a stand 14 </ b> A that is placed on the placement surface. The antenna 22 and the support mechanism 24 for the antenna 22 are included.
The casing 14 has a rectangular frame-shaped front surface 16 facing the front and a rectangular rear surface 18 facing the rear.
A display device 20 including a rectangular plate-like display panel 12 that displays an image is accommodated and held inside the housing 14, and the display surface of the display panel 12 is a rectangular shape provided on the front surface 16 of the housing 14. It is arranged to face forward through the opening 16A.
In the present embodiment, the display device 20 is configured by a liquid crystal display device, but various known display devices such as a plasma display device and an organic EL display device can be employed as the display device 20.
Inside the housing 14 are various electronic devices such as a drive circuit that drives the display device 20, a tuner circuit that receives a television signal and reproduces a video signal and an audio signal, and a power supply circuit that supplies power to each unit. A printed circuit board constituting a circuit is accommodated.
Further, in the present embodiment, as shown in FIG. 3, the housing 14 including the rear surface 18 is formed of a non-conductive material such as synthetic resin through which radio waves pass, and is located inside the housing 14 so as to face the rear surface 18. A rectangular plate-like reflector 19 made of a conductive material that reflects radio waves such as metal is disposed. The reflector 19 reflects the radio wave to be received by the antenna 22 toward the antenna 22. The reflection plate 19 can use an existing shield plate or the like.
As the material that reflects the radio wave, various conventionally known materials such as conductive materials other than metal can be used.

The support mechanism 24 is provided between the housing 14 and the antenna 22, and as shown in FIG. 2, a first position (A) for positioning the antenna 22 outside the contour of the front surface 16 of the housing 14, As shown in FIG. 1, the antenna 22 is supported so that its posture can be changed to a second position (b) where the antenna 22 is positioned inside the contour of the front surface 16 of the housing 14.
When viewed from the front in the first position (A), the antenna 22 has a portion of about 2/3 to 3/4 positioned outside the outline of the front surface 16 of the housing 14 and from the front. So that it can receive radio waves efficiently. It goes without saying that all the portions of the antenna 22 may be positioned outside the outline of the front surface 16 of the housing 14 at the first position (A).
Further, in the second position (b), most of the antenna 22 is located inside the outline of the front surface 16 of the housing 14, and only the lower end of the antenna 22 is the front surface of the housing 14 as shown in FIG. 1. 16 protrudes downward from the lower end of 16 to enhance the appearance of the television device 10. Of course, in the second position (b), all the portions of the antenna 22 may be positioned inside the outline of the front surface 16 of the housing 14.
In the present embodiment, the support mechanism 24 supports the antenna 22 so as to be movable up and down on the rear surface 16 of the housing 14. As shown in FIGS. 2 and 5, the first position (A) is The antenna 22 is a position protruding from the rear of the casing 14 and above the casing 14, and the second position (B) is a position behind the casing 14 as shown in FIGS. 1 and 3. .

More specifically, in the present embodiment, the support mechanism 24 includes a rail plate 26, a slide member 28, a holding member 30, a connecting member 32, an antenna support plate 34, and the like.
6A is a plan view of the rail plate 26, FIG. 6B is a view taken in the direction of arrow B in FIG. 6A, and FIG. 6C is a view taken in the direction of arrow C in FIG.
7A is a plan view of the slide member 28, FIG. 7B is a view taken in the direction of arrow B in FIG. 7A, and FIG. 7C is a view taken in the direction of arrow C in FIG.
FIG. 8A is a side view of the holding member 30.
9A is a side view of the main body 30A of the holding member 30, FIG. 9B is a view as viewed from the arrow B in FIG. 9A, and FIG. 9C is a view as viewed from the arrow C in FIG.
FIG. 10A is a side view of the pressing member 30B of the holding member 30, and FIG. 10B is a view taken along the arrow B in FIG.
FIG. 11A is a plan view of the antenna support plate 34, and FIG. 11B is a view taken in the direction of arrow B in FIG.
FIG. 12A is a plan view of the antenna 22, and FIG. 12B is a view taken in the direction of arrow B in FIG.

As shown in FIGS. 3 to 5, the rail plate 26 is attached to the rear surface 18 of the housing 14.
As shown in FIGS. 6A and 6B, the rail plate 26 includes a rectangular plate-shaped mounting plate 26A and rails 26B provided integrally with the mounting plate 26A on both sides of the mounting plate 26A. .
The mounting plate 26 </ b> A has a front surface 2602 and a rear surface 2604 located on the opposite side of the front surface 2602.
Engagement claws 2606 that project into engagement holes provided in the rear surface 18 of the housing 14 are projected from the left and right sides of the upper portion of the front surface 2602.
Screw insertion holes 2608 are formed through both the left and right sides of the middle portion and the lower portion of the mounting plate 26A. The engagement claws 2606 are engaged with the engagement holes on the rear surface 18 of the housing 14, and these four screw insertion holes 2608 are formed. The rail plate 26 is attached to the rear surface 18 by screwing the threaded screw into a female screw provided on the rear surface 18 of the housing 14.
The rail 26B is provided on the outer surface of each engagement claw 2606 and screw insertion hole 2608 on the rear surface 2604 of the mounting plate 26A, and the rail 26B extends vertically with the rail plate 26 attached to the rear surface 18. is doing.
A stopper 2610 that protrudes rearward is formed at the lower end of the rail 26B.
An engagement claw 3602 protrudes rearward from the center of the upper end of the mounting plate 26A in the left-right direction, and the engagement claw 3602 is urged in a direction protruding rearward. The engagement claw 3602 constitutes a click mechanism 36 that is detachably engaged with an engagement recess 2810 of the slide member 28 described later. The click mechanism 36 releases the engagement between the engagement claw 3602 and the engagement recess 2810 when the user retracts the engagement claw 3602 from the protruded state.

As shown in FIGS. 3 to 5, the slide member 28 is coupled to the rail 26B so as to be slidable up and down.
As shown in FIGS. 7A and 7B, the slide member 28 has a rectangular plate shape.
The slide member 28 has a front surface 2802 and a rear surface 2804 located on the opposite side of the front surface 2802.
Rail grooves 2806 that engage with the left and right rails 26B are respectively provided on the left and right sides of the front surface 2802, and the slide member 28 moves in the front-rear direction with respect to the rails 26B by engaging the rail grooves 2806 with the rails 26B. It is impossible to slide up and down.
A groove portion 2808 into which the engaging claw 3602 of the click mechanism 36 is inserted so as to move up and down relatively with respect to the front surface 2802 is formed to extend in the vertical direction at the center of the front surface 2802, and at the lower end of the groove portion 2808, An engaging recess 2810 is formed in which the engaging claw 3602 is engaged and disengaged.
Therefore, when the slide member 28 is coupled to the rail plate 26, the lower limit position at which the slide member 28 is not further moved downward is determined by the lower edge of the slide member 28 coming into contact with the stopper 2610 of the rail 26. The upper limit position is determined by the engagement recess 2810 detachably engaging with the engagement claw 3602 of the click mechanism 36. When the slide member 28 is located at the lower limit position, the antenna 22 is in the second position (B), and when the slide member 28 is located at the upper limit position, the antenna 22 is at the first position (A).
Near the top of the rail plate 26, screw insertion holes 2812 for attaching the holding member 30 to the left and right of the groove portion 2808 are provided at intervals on the left and right sides.

The holding member 30 is attached to the slide member 28 as shown in FIGS.
As shown in FIG. 8, the holding member 30 has a main body 30A and a pressing member 30B attached to the main body 30A via a screw, and has a spherical spherical surface over the mating surface of the main body 30A and the pressing member 30B. A bearing 30C is formed.
As shown in FIG. 10, the pressing member 30 </ b> B has a concave portion 3002 that is a spherical surface and constitutes a part of the spherical bearing 30 </ b> C, and four screw insertion holes 3004 provided around the concave portion 3002.
As shown in FIG. 9, the main body 30A includes a concave portion 3010 formed of a spherical surface and forming a spherical bearing 30C in cooperation with the concave portion 3002, and four screw insertion holes 3004 provided around the concave portion 3010. There are four female screws 3012 into which the inserted screws are screwed, and four female screws 3014 into which the screws inserted through the four screw insertion holes 2812 of the slide member 28 are screwed.
As shown in FIG. 3, the holding member 30 is attached to the upper portion of the slide member 28 by the four screws inserted into the screw insertion holes 2812 of the slide member 28 being respectively engaged with the four female screws 3014.

As shown in FIGS. 3 to 5, the antenna support plate 34 supports the antenna 22 and is coupled to the holding member 30 via the connecting member 32.
As shown in FIG. 11, the antenna support plate 34 has a rectangular plate shape with the same contour shape as the antenna 22, and includes a front surface 3402 and a rear surface 3404 that is located on the opposite side of the front surface 3402 and to which the antenna 22 is attached. Have.
Screw insertion holes 3406 are formed in the vicinity of the four corners of the antenna support plate 34 so as to penetrate therethrough.
A connecting member 32 is provided at the center of the front surface 3402.
The connecting member 32 includes a spherical portion 3202 and a shaft portion 3204 that connects the spherical portion 3202 to the front surface 3402.
The spherical portion 3202 is supported by the spherical bearing 30C and is formed so as to be tiltable and rotatable in any direction with respect to the center of the spherical bearing 30C by the spherical bearing 30C. That is, when the user tilts and rotates the antenna 22, the antenna 22 can be tilted and rotated in the user's desired direction, and the tilting and rotating state is caused by the frictional force between the spherical portion 3202 and the spherical bearing 30C. Is formed to be held.
In the present embodiment, the connecting portion that connects the slide member 28 and the antenna 22 is configured by the holding member 30 and the connecting member 32.
In addition, a locking portion that restricts the lower limit position and the upper limit position of the slide member 28 and locks the slide member 28 at these positions includes a stopper 2610 and an engagement claw 3602 of the click mechanism 36.

As shown in FIGS. 3 to 5, the antenna 22 is attached to an antenna support plate 34.
The antenna 22 receives television broadcast radio waves and has a plate shape.
In the present embodiment, the antenna 22 has a rectangular plate shape.
The antenna 22 has, for example, a printed circuit board and a band-shaped conductive pattern formed on the printed circuit board. If the conductive pattern is a radio wave band to be received, for example, a radio wave for terrestrial digital broadcasting, UHF It is formed in a size and shape suitable for receiving radio waves in the band.
As shown in FIG. 3, the antenna 22 is connected to an antenna receiving connector of the television apparatus 10 via a cable 23A and a connector 23B connected to the cable 23A. The reception signal output from 22 is supplied to the tuner circuit.
As shown in FIG. 12, the antenna 22 has a front surface 2202 superimposed on the rear surface 3404 of the antenna support plate 34 and a rear surface 2204 (radiation surface) located on the opposite side of the front surface 2202. In the present embodiment, the rear surface 2204 extends on a plane.
Female screws 2206 for attaching the antenna 22 to the antenna support plate 34 are formed near the four corners of the front surface 2202 of the antenna 22.
The antenna 22 is attached to the antenna support plate 34 by the screws inserted through the four screw insertion holes 3406 of the antenna support plate 34 being screwed into the female screws 2206.

In this embodiment, rail plate 26, slide member 28, holding member 30, connecting member 32, antenna support plate 34, screw for attaching rail plate 26 to rear surface 18, screw for attaching holding member 30 to slide member 28, The screw for attaching the holding member 30B to the main body 30A and the screw for attaching the antenna 22 to the antenna support plate 34 are all formed of a non-conductive material such as synthetic resin, so that the radio wave is guided to the antenna 22 without being disturbed. It has been.
In the present embodiment, as shown in FIG. 3, with the antenna 22 positioned at the second position (b), the interval ΔL formed between the reflector 19 and the antenna 22 is to be received. Where λ is the wavelength of the radio wave, the radio wave reflected by the reflector 19 is efficiently reflected and guided to the antenna 22, thereby The gain of the antenna 22 is improved.

In this embodiment, as shown in FIGS. 1 and 3, the lower edge of the slide member 28 is brought into contact with the stopper 2610 of the rail 26, so that the antenna 22 is positioned inside the contour of the front surface 16 of the housing 14. The second position (b).
Further, the slide member 28 located at the second position (b) is moved upward as shown in FIG. 4, and the engagement recess 2810 of the slide member 28 is clicked of the click mechanism 36 as shown in FIGS. By engaging with the engaging claws 3602, the antenna 22 becomes the first position (A) located outside the outline of the front surface of the housing 14.
Therefore, for example, the television apparatus 10 is installed indoors, and there is a window opened outdoors behind the television apparatus 10 so that radio waves travel from the rear of the housing 14 toward the antenna 22 through the window. In such an installation environment, the antenna 22 may be set to the first position (A) or the second position (B). At any of the first and second positions (A) and (B) of the antenna 22, radio waves can be efficiently guided to the antenna 22, which is advantageous for improving the gain of the antenna 22.
In this case, when the antenna 22 is set to the second position (b), most of the antenna 22 is located inside the outline of the front surface 16 of the housing 14, so that the antenna 22 can be made inconspicuous. This is also advantageous for improving.
In particular, in the present embodiment, since the interval ΔL formed between the reflector 19 provided in the housing 14 and the antenna 22 is about λ / 4, the antenna 22 is moved to the second position (b). Then, the radio wave can be efficiently reflected and guided to the antenna 22 by the reflection plate 19, which is more advantageous in securing the gain of the antenna 22. In addition, by separating the antenna 22 from the housing 14 in this manner, it is advantageous for suppressing the influence of unnecessary radiation generated from an electronic circuit or the like inside the housing 14 on the antenna 22.
In an installation environment where there is a window in front of the television apparatus 10 and radio waves travel from the front of the housing 14 toward the antenna 22 through the window, the antenna 22 is set to the first position (A). As a result, the antenna 22 is located outside the outline of the front surface 16 of the housing 14, so that radio waves are blocked by the display panel 12, the printed circuit board, the electronic component, the frame made of a conductive material, etc. disposed inside the housing 14. Thus, the antenna 22 is efficiently guided to the antenna 22, which is advantageous in improving the gain of the antenna 22.

In this embodiment, since the spherical portion 3202 of the connecting member 32 is sandwiched between the spherical concave portions 3002 and 3010 of the holding member 30, the antenna 22 is in the first position (A) or the second position ( B) the antenna 22 can be tilted in any direction and the rear surface 2204 (radiation surface) of the antenna 22 can be directed in the traveling direction of the radio wave, so that the radio wave is efficiently guided to the antenna 22. This is advantageous in improving the gain of the antenna 22.
Further, since the spherical portion 3202 of the connecting member 32 is rotatably supported by the spherical bearing 30C of the holding member 30, the antenna 22 passes through the center of the spherical portion 3202 and the direction in which the antenna 22 is directed (antenna 22 And an axis extending in the direction perpendicular to the rear surface 2204 (radiation surface).
Therefore, the radio wave is efficiently transmitted by rotating the attitude of the antenna 22 by 90 degrees around the axis depending on whether the radio wave of television broadcasting is transmitted with horizontal polarization or when transmitted with vertical polarization. It can be guided to the antenna 22 well, which is advantageous in improving the gain of the antenna 22.

Although the case where the antenna 22 has a rectangular plate shape has been described in the present embodiment, the shape of the antenna 22 may be, for example, a disk shape, and various conventionally known shapes can be employed.
In this embodiment, the rear surface 2204 (radiation surface) of the antenna 22 extends on a plane. However, the rear surface 2204 (radiation surface) of the antenna 22 is a cylindrical surface, spherical surface, or It may have a curved surface. In other words, in the present invention, the “plate shape” of the “plate-like” antenna includes a plane and a curved surface.
However, if the rear surface 2204 (radiation surface) of the antenna 22 extends on the plane as in the present embodiment, a large projected area of the rear surface 2204 (radiation surface) viewed from the traveling direction of the radio wave can be secured. This is advantageous in improving the gain of the antenna 22.

(Second Embodiment)
Next, a second embodiment will be described.
FIG. 13 is a side view of the television apparatus 10 according to the second embodiment, FIG. 14 is a plan view of the support mechanism 40, and FIG. 15 is a cross-sectional view of the click mechanism 50.
The second embodiment is different from the first embodiment in the configuration of the support mechanism 40, and the other configurations are the same as those in the first embodiment, and thus the same as those in the first embodiment. Parts are denoted by the same reference numerals in the drawings, and description thereof is omitted.
As shown in FIG. 13, the antenna 22 is supported by the support mechanism 40 so that the upper edge of the antenna 22 can swing around an axis extending in the horizontal direction at the upper edge of the rear surface 18 of the housing 14.
More specifically, as shown in FIG. 14, boss portions 42 that protrude rearward are formed on the left and right of the upper edge of the rear surface 18 of the housing 14, and the upper edge of the antenna 22 is inserted between the boss portions 42. The bulging part 44 to be formed is formed.
Then, the shaft 46 protruding from the left and right ends of the bulging portion 44 is rotatably coupled to the bearing hole 48 of the boss portion 42, and the antenna 22 is in the first position (the ), And the antenna 22 is in the second position (b) in a state where the antenna 22 is suspended downward from the shaft 46.
A click mechanism 50 is provided for holding the antenna 22 at the first and second positions (A) and (B).
The click mechanism 50 includes a concave groove 52 formed on the outer peripheral surface of the shaft 46 at an interval of 180 degrees, and a steel ball 56 that is urged by a spring 54 inside the boss portion 42 and can be engaged with the concave groove 52. The steel balls 56 are respectively engaged with the concave grooves 52 at the first and second positions of the antenna 22 so as to hold the first and second positions of the antenna 22.
Therefore, in the present embodiment, the support mechanism 40 includes the shaft 46, the bearing hole 48, the click mechanism 50, and the like.
In the second embodiment as described above, the same function and effect as the first embodiment are exhibited.

  In the second embodiment, the upper edge of the antenna 22 is supported by the support mechanism 40 so as to be swingable around the axis extending in the horizontal direction on the upper edge of the rear surface 18 of the housing 14. As described above, either of the left and right edges of the antenna 22 is supported by the support mechanism 40 so as to be swingable around an axis extending in the vertical direction at the left and right edges of the rear surface 18 of the housing 14. Of course, 22 may be configured to swing in the left-right direction.

It is a front view which shows the state which the antenna 22 of the television apparatus 10 of 1st Embodiment located in the 2nd position (b). It is a front view which shows the state which the antenna 22 of the television apparatus 10 was located in the 1st position (I). It is a side view which shows the state which the antenna 22 of the television apparatus 10 located in the 2nd position (b). It is a side view which shows the state which the antenna 22 of the television apparatus 10 was located in the intermediate position of 1st position (I) and 2nd position (B). It is a side view which shows the state which the antenna 22 of the television apparatus 10 was located in the 1st position (I). (A) is a plan view of the rail plate 26, (B) is a view taken in the direction of arrow B in (A), and (C) is a view taken in the direction of arrow C in (A). (A) is a top view of the slide member 28, (B) is a B arrow view of (A), (C) is a C arrow view of (A). FIG. 4A is a side view of the holding member 30. (A) is a side view of the main body 30A of the holding member 30, (B) is a view as seen from the arrow B in (A), and (C) is a view as seen from the arrow C in (A). (A) is a side view of the pressing member 30B of the holding member 30, and (B) is a view as viewed from the arrow B of (A). (A) is a top view of the antenna support plate 34, (B) is a B arrow view of (A). (A) is a top view of the antenna 22, (B) is a B arrow view of (A). It is a side view of the television apparatus 10 of 2nd Embodiment. 3 is a plan view of a support mechanism 40. FIG. 3 is a cross-sectional view of a click mechanism 50. FIG.

Explanation of symbols

  10 ... Television apparatus, 14 ... Housing, 22 ... Antenna, 24, 40 ... Support mechanism.

Claims (5)

A rectangular plate-shaped housing;
A display surface of a display device arranged to face the front opening of the housing;
A plate-like antenna for receiving television broadcast radio waves,
A first position that is provided between the housing and the antenna and is positioned outside the contour of the housing when viewed from the front; and the antenna is positioned inside the contour of the housing A support mechanism for supporting the antenna so that the posture can be changed to the second position .
The support mechanism is
A slide member movably coupled to the rear surface of the housing; and a spherical bearing; a connecting portion for connecting the slide member and the antenna; a lower limit position and an upper limit position of the slide member; And a locking part for locking the slide member at those positions,
The antenna is in the first position at the upper limit position of the slide member, and in the second position at the lower limit position of the slide member, and can be tilted and pivoted about the center of the spherical bearing by the connecting portion. A television device supported as possible . The antenna is supported by the support mechanism so as to be movable up and down behind the rear surface of the housing,
The first position is a position where the antenna protrudes above the casing behind the rear surface of the casing;
The second position is a position behind the rear surface of the housing .
Television apparatus of 請 Motomeko 1, wherein the. The second position is a position behind the rear surface of the housing;
The rear surface of the housing is formed of a non-conductive material through which radio waves pass,
Inside the housing, a reflector is provided toward the antenna for radio waves to be received by the antenna,
When the distance between the reflector and the antenna is ΔL and the wavelength of the radio wave to be received is λ, the antenna has a relationship of ΔL≈λ / 4 by the support mechanism at the second position. Located in the place to fill ,
Television apparatus of 請 Motomeko 1, wherein the. In the first position, when viewed from the front, the antenna has a portion of about 2/3 to 3/4 positioned outside the outline of the housing .
Television apparatus of 請 Motomeko 1, wherein the. In the second position, when viewed from the front, the antenna has most of the portion located within the outline of the casing, and the remaining portion is located below the outline of the casing .
Television apparatus of 請 Motomeko 1, wherein the.

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