Display apparatus

• US 7,168,665 B2
• Filed: 04/04/2003
• Issued: 01/30/2007
• Est. Priority Date: 07/06/2002
• Status: Expired due to Fees

• Current Assignee: Samsung Electronics Co. Ltd.
• Original Assignee: Samsung Electronics Co. Ltd.
• Inventors: Hong, You-sik, Park, Seon-kyu
• Primary Examiner(s): King; Anita
• Assistant Examiner(s): Le; Tan
• Application Number:
  US10/406,269
• Publication Number:
  US 20040004165A1
• Time in Patent Office: 1,397 Days
• Field of Search: 248/286.1, 248/125.2, 248/370, 248/123.2, 248/317, 248/320, 248/325, 248/917, 248/918, 248/125.1, 248/132, 108/147
• US Class Current: 248/125.1
• CPC Class Codes: F16M 11/08 around a vertical axis , e.g. panoramic heads F16M11/12 takes precedence
• CPC Class Codes: F16M 11/18 with mechanism for moving the apparatus relatively to the stand
• CPC Class Codes: F16M 11/2014 around a vertical axis F16M11/2035 takes precedence
• CPC Class Codes: F16M 11/28 Undercarriages for supports with one single telescoping pillar
• CPC Class Codes: Y10S 248/917 Video display screen support

Abstract

A display apparatus having a display main body provided with a screen, and a base unit to support the display main body. The display apparatus includes a supporting unit provided between the display main body and the base unit to support the display main body to be lifted up and lowered down, a gearing unit to cooperate with the up and down lifting/lowering of the display main body, and an auxiliary base part ejected from and inserted in the base unit according to an operation of the gearing unit. Thus, the present invention provides a display apparatus in which a size of a base part to support a display main body is optimized according to a height of the display main body.

Claims

1. A display apparatus having a display main body provided with a screen, and a base unit to support the display main body, comprising:

a supporting unit provided between the display main body and the base unit to support the display main body to be lifted up and lowering down;

a gearing unit operated by the lifting/lowering of the display main body; and

an auxiliary base part to eject from and insert in the base unit according to an operation of the gearing unit,

wherein the supporting unit includes;

a cylinder unit including a cylinder filled with high-pressure gas;

a piston dividing the cylinder into two chambers to slide up and down in the cylinder;

a piston rod inserted in a lower part of the cylinder and coupled to a bottom part of the piston; and

a cylinder cover to accommodate and support the cylinder and the piston rod.

2. The display apparatus according to claim 1, wherein an upper part of the cylinder is combined to the display main body, and a lower part of the piston is combined to the base unit.

3. The display apparatus according to claim 2, wherein the cylinder unit comprises:

a valve disposed on the piston to open and close a passageway between the two chambers divided by the piston.

4. The display apparatus according to claim 3, wherein the cylinder unit further comprises:

a valve rod accommodated in a valve rod accommodating part formed inside the piston rod in a longitudinal direction, having an upper end coupled to the valve; and

a valve control lever coupled to a lower end of the valve rod to protrude from the base unit so as to open and close the valve.

5. The display apparatus according to claim 1, further comprising:

a lower casing to accommodate the cylinder unit and to combine to the base unit; and

an upper casing to accommodate the lower casing and to combine to the display main body to be lifted up and lowering down, wherein an upper end of the upper casing is covered with a casing cover.

6. The display apparatus according to claim 5, wherein the gearing unit comprises:

a first roller rotatably combined to an upper part of the lower casing to be rotated depending on the up and down lifting/lowering of the upper casing;

a second roller rotatably combined to the base unit; and

a belt to transmit a rotary motion of the first roller to the second roller,

wherein the auxiliary base part is ejected from and inserted in the base unit depending upon the rotary motion of the second roller.

7. The display apparatus according to claim 6, further comprising:

a reinforcing member accommodated in the upper casing and fastened to an upper part of the upper casing; and

a guide rail provided in the lower casing to slidingly support a reinforcing member.

8. The display apparatus according to claim 7, wherein the reinforcing member is provided with a contact pad on a lower part thereof so as to be accommodated and to slide in the guide rail of the lower casing.

9. The display apparatus according to claim 8, wherein the reinforcing member is provided with a first rack in a lengthwise direction thereof, and the first roller has a first pinion to mesh with the first rack.

10. The display apparatus according to claim 9, wherein the auxiliary base part is provided with a second rack in an ejecting and inserting direction thereof, and the second roller has a second pinion to mesh with the second rack.

11. The display apparatus according to claim 2, further comprising:

a hinge unit provided between the display main body and the cylinder unit to swivel the display main body about the cylinder unit.

12. The display apparatus according to claim 11, wherein the hinge unit comprises:

a pair of main body brackets fastened to a rear of the display main body;

a hinge shaft rotatably combined to the main body brackets; and

a hinge bracket having a first cylinder part coupled to the hinge shaft and a second cylinder part coupled to an upper part of the cylinder unit, the hinge bracket rotatably combining the hinge shaft to the upper part of the cylinder of the cylinder unit.

13. The display apparatus according to claim 12, wherein the main body brackets have a hinge hole in which the hinge shaft is rotatably inserted.

14. The display apparatus according to claim 13, wherein the hinge shaft is shaped like a rod so that opposite ends thereof are disposed in the hinge hole and a middle part thereof is fastened into the first cylinder part of the hinge bracket.

15. The display apparatus according to claim 5, wherein the lower casing has a cylindrical shape and is fastened to a casing combining part of the base unit, and the upper casing has a cylindrical shape and is provided an outer circumference of the lower casing.

16. The display apparatus according to claim 9, wherein the lower casing comprises:

a cylinder accommodating part to accommodate the cylinder unit; and

a first rotation supporting part provided in an upper part thereof and rotatably combined with the first pinion of the gearing unit.

17. The display apparatus according to claim 8, wherein the casing cover comprises:

a cylinder combining part to combine to an upper end of the cylinder; and

a reinforcing member combining part to combine to an upper end of the reinforcing member accommodated in the upper casing, to allow the upper casing to be lifted up and lowered down together with the display main body.

18. The display apparatus according to claim 4, wherein the base unit comprises:

an auxiliary base part gate through which the auxiliary base part is ejected from and inserted in the base unit;

a valve lever fulcrum provided inside the base unit to pivot the valve control lever; and

a valve control lever hole provided on an upper surface of the base unit, thereby allowing control of the valve control lever which protrudes therethrough.

19. The display apparatus according to claim 8, wherein when the cylinder is lifted up and lowered down against the piston rod, the display main body, the upper casing, and the reinforcing member which are all combined to the cylinder, are lifted up and lowered down altogether.

20. The display apparatus according to claim 18, wherein the lower end of the valve rod is provided with an elastic member such as a spring to elastically restore the valve to a closing position, thereby closing through holes of the piston and dividing the two chambers.

21. The display apparatus according to claim 20, wherein when the valve control lever is pushed, a force overcomes an elasticity of the elastic member, thereby allowing the valve to open and causing a force of the cylinder unit to act on the display main body in an upward direction.

22. The display apparatus according to claim 21, where the force of the cylinder unit to lift up the display main body is equal to a weight of the display main body.

23. The display apparatus according to claim 10, wherein a first and second pulley are attached to the first and second pinion, respectively, and are connected by the belt to transmit a rotary motion of the first pinion to the second pinion.