JP2003216051A - Rotary video display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a rotary video display device allowed to be continuously rotated and having simple constitution. <P>SOLUTION: The rotary video display device consisting of a fixed board part provided with a motor and a rotary display part to be rotated by the motor of the fixed board part is provided with a rotary transformer for transmitting a video signal from the fixed board part to the rotary display part and a pair of slip rings for transmitting power from the fixed board part to the rotary display part. The rotary transformer is provided with a stator fixed on the fixed board part and provided with a coil and a rotor attached to the rotary display part and provided with a coil and each slip ring is constituted of a conductive ring attached to the rotary shaft of the motor and a conductive brush supported by the fixed board part and brought into contact with the conducive ring. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a rotary type image display device incorporating a flat panel type display device such as a plasma display panel (PDP), an LCD panel and an EL panel.

[0002]

2. Description of the Related Art A swivel mechanism for adjusting a viewing angle of a displayed image by allowing a flat panel type display device to rotate within a fixed rotation angle range has been already proposed. However, the flat panel type display device is continuously rotated. Has not been realized due to the barriers of signal transmission and power transmission.

In order to realize continuous rotation of the flat panel display device, a battery as a video signal source such as a DVD or VDR or a power source can be mounted on a rotating body together with the flat panel display device. is necessary.

In addition, in an image display device using a flat panel type display device, it is common to combine two or more sets of independent image display devices so that the displayed images can be viewed from both sides.

[0005]

SUMMARY OF THE INVENTION It is an object of the present invention to provide a rotary type image display device capable of continuous rotation and having a simple structure.

Another object of the present invention is to provide a rotary type image display device which is capable of continuous rotation, allows display images to be viewed from both sides, and has a simple structure.

[0007]

According to a first aspect of the present invention, there is provided a fixed base portion having a motor, and a rotation display portion rotatably supported by the fixed base portion and rotated by a motor of the fixed base portion. The rotary video display device including a rotary transformer for transmitting a video signal from the fixed base to the rotary display, and a pair of slip rings for transmitting electric power from the fixed base to the rotary display. The rotary transformer is composed of a stator attached to a fixed base portion and having a coil, and a rotor attached to a rotation display portion and having a coil, and each slip ring is attached to a rotating shaft of a motor. And a conductive brush supported by the fixed base and contacting the conductive ring.

According to a second aspect of the present invention, in the rotary image display device according to the first aspect, the rotary display unit is a flat panel type display device including a display panel and its driver, and the flat panel type display device. Power supply circuit of the flat panel display device, and the power supply circuit of the flat panel display device is supplied with electric power from the fixed base portion side to the rotary display portion through the pair of slip rings to drive the flat panel display device. Further, the video signal is supplied from the fixed base portion side via the rotary transformer.

According to a third aspect of the present invention, in the rotary type image display apparatus according to the first aspect, the rotary display unit is a flat panel type device in which two display panels are combined so that their display surfaces face outward. A display device and a power supply circuit common to those flat panel display devices are provided. Each flat panel display device is composed of a display panel and its driver. Electric power is supplied to the common display circuit from the fixed base section side through the pair of slip rings to the rotary display section, and the driver of each flat panel display device receives the video signal from the fixed base section side through the rotary transformer. It is characterized by being supplied.

[0010]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiments of the present invention will be described below with reference to the drawings.

FIG. 1 shows the outer appearance of the rotary image display device.

The rotary type image display device has a fixed base 100.
And a rotation display unit 200 rotatably supported by the fixed base unit 100.

The rotating display unit 200 includes two plasma display panel devices 210 and 220 and a DC / DC common to the plasma display panel devices 210 and 220.
A DC conversion power supply circuit 230 (see FIG. 2) is provided. Two
Single plasma display panel device 210, 220
Are combined such that the display surfaces face each other outward. Plasma display panel device 210, 22
0 includes a plasma display panel (PDP panel) and its driver.

FIG. 2 shows the mechanism of the rotary image display device.

In FIG. 2, only one of the plasma display panel devices 210 and 220 is shown. Reference numeral 21
1, 212 are plasma display panel devices 210.
3 shows a plasma display panel and its driver, respectively.

The fixed base portion 100 is provided with a casing 110 whose upper surface is open. To the casing 110, a rotary transformer 120 arranged in the opening of the upper surface is attached. The rotary transformer 120 is for supplying a video signal from the fixed base 100 side to the rotary display unit 200, and includes a fixed body (stator) 121 having a coil and a rotating body (rotor) 122 having a coil.
Consists of. Fixed body 121 of rotary transformer 120
Is fixed to the casing 110. The rotation display unit 200 is attached to the rotating body 122 of the rotary transformer 120.

In the casing 110, the rotation display section 20 is provided.
A motor 130 for rotating 0 is built in. The motor 130 is fixed to the fixed plate portion 121 of the rotary transformer 120. The motor 130 includes a frame 131, a stator 132, a rotor 133, a hollow rotating shaft 134, and a bearing 135, as is well known.

The rotary shaft 134 extends vertically.
The upper part penetrates the rotary transformer 120, and the lower part penetrates the frame 131. The rotating shaft 134 and the rotor 133 are fixed. The rotating shaft 134, the stator 132, and the fixed plate portion 12 of the rotary transformer 120.
A bearing 135 is provided between the bearing 135 and the bearing 1. Rotating shaft 13
4 and the rotary plate 122 of the rotary transformer 120 are fixed. Therefore, the rotary shaft 13 of the motor 130
When 4 rotates, the rotary plate section 122 of the rotary transformer 120 rotates, and the rotation display section 200 fixed to the rotary plate section 122 also rotates.

A pair of upper and lower conductive rings 141 and 151 are fixed to the lower end of the rotary shaft 134. The conductive brushes 142 and 152 supported by the casing 110 are in contact with the conductive rings 141 and 151, respectively. The conductive ring 141 and the conductive brush 142 constitute the first slip ring 140, and the conductive ring 151 and the conductive brush 152 constitute the second slip ring 15.
0 is configured.

The conductive brushes 142 and 152 are AC / D
The DC power supply, which is connected to the C conversion power supply circuit 301 and is generated by the AC / DC conversion power supply circuit 301, is rotated via the slip rings 141 and 142.
It is supplied to the DC / DC conversion power supply circuit 230 therein.

Fixed body 121 of rotary transformer 120
Three annular grooves are formed at the corresponding positions on the opposing surfaces of the rotating body 122 and the coil 121, and the coil 121 is formed in each of these grooves.
a, 121b, 121c, 122a, 122b, 122
c is fitted.

Each coil 121a, 121 of the fixed body 121
The b, 121c are supplied with R, G, B signals from the video signal processing circuit 302, respectively. R supplied to each coil 121a, 121b, 121c of the fixed body 121,
The signals of G and B are respectively 122a, 122 of the rotating body 122.
b and 122c are transmitted in a contactless manner.

Each of the rotating bodies 122, 122a, 122b, 1
The signals of R, G, and B transmitted to 22c are displayed on the rotation display unit 2
No. 00 is provided to the drivers in the two plasma display panel devices 210 and 220. As a result, both plasma display panel devices 210 and 220
The image is displayed on the plasma display panel of.

[0024]

According to the present invention, it is possible to obtain a rotary type image display device capable of continuous rotation and having a simple structure.

Further, according to the present invention, it is possible to obtain a rotary type image display device which is capable of continuous rotation, allows display images to be visually recognized from both sides, and has a simple structure.

[Brief description of drawings]

FIG. 1 is a perspective view showing the outer appearance of a rotary image display device.

FIG. 2 is a side view showing a mechanism of a rotary image display device.

[Explanation of symbols]

100 fixed stand 120 rotary transformer 121 Fixed body (stator) 121a, 121b, 121c coils 122 Rotor 122a, 122b, 122c coil 130 motor 134 rotation axis 140, 150 slip rings 141, 151 conductive ring 142, 152 Conductive brush 200 rotation display 210, 220 Plasma display panel device 230 DC / DC conversion power supply circuit 301 AC / DC conversion power supply circuit 302 Video signal processing circuit

Claims (3)

[Claims] 1. A rotary type image display device comprising a fixed base portion equipped with a motor and a rotary display portion rotatably supported by the fixed base portion and rotated by a motor of the fixed base portion, wherein The rotary display includes a rotary transformer for transmitting a video signal, and a pair of slip rings for transmitting power from the fixed base to the rotary display.
The rotary transformer is composed of a stator attached to a fixed base portion and having a coil, and a rotor attached to a rotation display portion and having a coil, and each slip ring is attached to a rotating shaft of a motor. A rotary image display device comprising a conductive ring and a conductive brush supported by a fixed base portion and in contact with the conductive ring. 2. The rotary display unit includes a flat panel type display device including a display panel and a driver thereof, and a power supply circuit for the flat panel type display device.
Electric power is supplied to the rotary display unit from the fixed base portion side through the pair of slip rings to the power circuit of the flat panel display device, and the flat panel display device driver is fed from the fixed base portion side through the rotary transformer. The rotary image display device according to claim 1, wherein an image signal is supplied. 3. The rotary display unit is provided with two flat panel type display devices which are assembled so that their display surfaces face each other outward, and a power supply circuit common to these flat panel type display devices. And each flat panel type display device is composed of a display panel and its driver,
Electric power is supplied to the rotary display unit from the fixed base side through the pair of slip rings to the power supply circuit common to the two flat panel type display devices, and the rotary transformer is passed to the driver of each flat panel type display device. 2. The rotary image display device according to claim 1, wherein the image signal is supplied from the fixed base portion side.