JPH01216388A - Large-scaled image display device - Google Patents

Abstract

PURPOSE:To facilitate assembly, disassembly, and maintenance by integrating plural display modules in one body as a display unit and arranging constitution parts such as plural display lamp, electric circuits for driving the display lamps, and a blasting fan into functional blocks. CONSTITUTION:The display unit 4 integrally formed by the plural display modules 3 has the plural display modules 3 disposed in matrix in the front of a unit case 40 and is formed to house printed circuit boards 41 to be connected to a printed circuit board for power supply 21 with a connector. Also, the blasting fan 42 provided in association with an air inlet 42a to perform forced air cooling of the display lamps 1 and the display lamp driving circuits, and a printed circuit board for input 43 packaged with a distribution circuit to distribute input picture signals to the display lamp driving circuit of each of printed circuit boards for driving 41 are attached to the inner face of the back board of the unit case 40. The assembly, the disassembly, and the maintenance can be thereby facilitated.

Description

DETAILED DESCRIPTION OF THE INVENTION [Field of Industrial Application 1] The present invention relates to a large-sized image display device that displays images using a large number of display lamps arranged in a matrix.

[Prior Art J] Conventionally, this type of large-sized image display device, as shown in FIG. 19 and FIG. A large number of display lamps are arranged in a matrix on the front side of the housing 2 to form a large display surface, and the color and amount of light emitted from each indicator lamp 1 is controlled by an indicator lamp drive circuit (not shown) housed in the housing 2. , advertising images, computer graphic images, and other still images, as well as telops such as Lightning Niace. Note that it is also possible to display a video recorded on a videotape or a moving image such as a video shot with a television camera.

Incidentally, in such a large-sized image display device, it is necessary to arrange a large number of display lamps 1 at a constant pitch, and conventionally, as shown in FIG. The indicator lamp 1 inserted into the hole 31 through the waterproof gasket 32 is attached to the lamp socket 34 provided on the bling board 33 on which the indicator lamp drive circuit is mounted, and the indicator lamp 1 can be freely replaced to facilitate maintenance. There was something I did.

[Problem to be solved by the invention 1 However, in the above-mentioned conventional example, the display lamp 1
Although it is easy to replace the indicator lamps 1, there is a problem in that the assembly work of installing a large number of indicator lamps 1 is troublesome.Furthermore, since the other components other than the indicator lamps 1 are separate parts, maintenance as a whole is difficult. There were problems in that it was difficult to do and parts management was troublesome.

The present invention has been made in view of the above points, and its purpose is to provide a large-sized image display device that can be easily assembled and maintained, and can also be easily managed. be.

[Means for Solving the Problems 1] The large-sized image display device of the present invention has a large number of display lamps arranged in a matrix on the front surface of a housing, and a display lamp drive circuit housed in the housing controls the light emission of each display lamp. In a large image display device that displays images by controlling the
) A drive printed circuit board with a display lamp drive circuit mounted on the back of the display module is arranged in a row on the front of the case, and is removably attached by connecting a connector, and a printed circuit board for human power is attached to the blower fan. A display unit is formed by covering the rear opening of the unit case, and the display units are arranged in a matrix on the front surface of the housing.

[Function 1] The present invention is configured as described above, and includes a plurality of display lamps integrated as a display module, a plurality of display modules integrated as a display unit, and a large number of display lamps and their display lamp drive. Since the circuit can be installed and removed as blocks of appropriate size,
Assembly and maintenance can be easily performed on a block-by-block basis. *In addition, the drive printed circuit board is connected to the connector perpendicular to the rear surface of the display monolayer placed on the front of the unit case, and the blower fan and input printed circuit board are covered in the rear opening of the unit case. It is attached to the back plate, and components such as a large number of indicator lamps, an electric circuit for driving the indicator lamps, and a blower fan are appropriately organized into functional blocks, making assembly and disassembly easy, and maintenance is easy. It also makes it easier to manage parts.

[Embodiment 1 Figures 1 to 8 show an embodiment of the present invention, in which the indicator lamps 1 arranged in a matrix on the front surface of the housing 2 are arranged in the 7th rl! As shown in FIGS. 1 and 8, a lamp body 10 is made of a fluorescent lamp capable of emitting multicolor light, and has four independent square light emitting parts and a display surface covered with R, G, and B filters; Base of lamp body 10 (742721
It is formed with a cylindrical lamp holder 11 provided so as to surround the lamp holder 11, and an electrode pin 15 to which the electrode drawer 1i15a of the indicator lamp 1 is connected is provided protruding from the periphery of the rear opening of the lamp holder 11. A cap portion is formed. Further, the rear opening of the lamp holder 11 serves as an intake port 12,
An exhaust port 13 is provided on the front lower surface of the curved surface of the lamp holder 10, and a ventilation passage 14 is formed between the lamp holder 11 and the lamp body 10.

Therefore, by blowing air from a blower fan 42, which will be described later, through the ventilation path 14 of each display lamp 1 and the minute gap 5 between the display lamps 1, the heat dissipation from each display lamp 1 can be made uniform, and the temperature change of the display lamp 1 can be made uniform. This prevents variations in luminous efficiency and allows high-quality color images to be displayed.

In addition, in the embodiment, a shade 7 that prevents sunlight from being reflected on the display surface 1a is attached to each display lamp 1, and the base of the shade 7 is provided with a small amount of light in the vertical direction between the display lamps 1. A waterproof plate part 8 is provided which is inserted into the space FJ5 and faces the exhaust port 13 at an appropriate interval. A gap 5 prevents rainwater from entering through an exhaust port 13 formed on the front lower surface of the rising indicator lamp 1. The shade 7 is formed by punching out a thin stainless steel plate into a predetermined shape, bending the upper light-shielding part 7a, cutting and raising the lower light-shielding part 7b, and painting it black.

In addition, in the embodiment, as shown in FIGS. 3 to 6, 16 (8×2) of the display lamps 1 described above are imaged to form a display monoyl 3, and this display module 3 is
As shown in the figure and FIG. 2, the display unit 4 is formed by forming eight (2×4) images, and a plurality of display units and units 4 are arranged in a matrix on the front surface of the housing 2. It is arranged so that a large-sized image with a predetermined number of pixels can be displayed.

3 to 6 show the configuration of the display module 3, in which 16 display lamps 1 are arranged in two rows, upper and lower, on the front of a module case 20, and electrode pins of the display lamps 1 are arranged inside the module case 20. 15 is directly attached by soldering,
It is formed by arranging a power supply printed circuit board 21 on which a power supply pattern for supplying power to each electrode pin 15 is formed, and a drive printed circuit board 41 on which a display lamp drive circuit is mounted is connected to the power supply printed circuit board 21. A flexible connector 28 is provided. In addition, the printed circuit board 21 includes
A ventilation hole 29 corresponding to the air intake port 12 of the indicator lamp 1 is formed, so that even if the printed circuit board 21 is arranged parallel to the front plate 22, the air blown by the air blower 7T 42 can be distributed to each indicator lamp 1. The display lamp 1 can be smoothly introduced into the ventilation path 14 to efficiently dissipate heat from the indicator lamp 1.

Further, in the embodiment, the module case 20 of the display module 3 is vertically divided into three parts such that the front part is divided into three parts and the rear part is divided into two parts.
The lamp hole 23 formed on the front surface of the module case 20 is formed by attaching the upper cover 20b and lower cover 20e to the upper and lower sides of the case body 20a, which is a split case.
A plurality of pieces (eight pieces each) are cut out so as to straddle the joints of the upper and lower covers 20b and 20c, respectively. *In addition, a fitting 124 is formed on the cylindrical surface of the lamp holder 11 of the indicator lamp 1 to fit the circumferential edge of the lamp hole 23. By fitting into the fitting groove 24, a watertight structure can be realized with a simple structure, and the display lamp 1 can be accurately positioned in the vertical, horizontal, and front-back directions. Moreover, a waterproof wall 25 parallel to the front plate 22 is provided inside the module case 20, and this waterproof wall 25 is provided inside the module case 20.
! ! Lamp hole 2 drilled across the joint of 25
6 is fitted into a second fitting groove 27 formed on the circumferential surface of the cylindrical portion of the lamp holder 11 to form a second watertight structure, thereby providing a more reliable waterproof function. There is. Furthermore, a drain hole 35 is formed in the bottom plate of the lower cover 20c to drain out rainwater that has entered between the front plate 22 and the waterproof wall 25, and the rainwater that has entered is retained, creating a double watertight structure. The structure is not damaged.

On the other hand, the display unit 4, which is an image of a plurality of the display modules 3 described above, has eight display scales 3 arranged in a matrix on the front surface of the unit case 40, as shown in FIGS. 1 and 2. At the same time, each display module 4 is formed to house a printed circuit board 41 which is protruded from the back surface (connected to the power supply printed circuit board 21 with a connector). The unit case 40 also includes a rectangular cylindrical case body 40m to which the display module 3 is attached to the front opening, a back cover 40b that covers the rear opening of the case body 40m, and a rear opening of the back cover 40b. back plate 40c covered with
It is formed by. On the inner surface of the back plate 40c, there is an air blower 7 42 provided corresponding to the intake port 42a for forced air cooling of the display lamp 1 and the display lamp drive circuit, and an air blower 7 42 that transmits input display image signals to each drive printed circuit board 41. An input printed circuit board 43 on which a distribution circuit for distributing to display lamp drive circuits is mounted is attached.
A power supply connector 45a1 and signal connectors 45b and 45c are provided on the outer surface of 0c. The power supply and display lamp control signals output from the distribution circuit of the input printed circuit board 43 are connected to a cable with a connector (not shown).
It is designed to be connected to connectors 44a to 44c provided on the driving printed circuit board 41 via.

Here, a plurality of display lamps 1 are integrated as a display module 3, and a plurality of display modules 3 are further integrated as a display unit 4, and a large number of display lamps 1 and their display lamp drive circuits for displaying a large image are integrated. Since the blocks can be attached and detached as blocks of appropriate size, assembly and maintenance can be easily performed in block units.
is attached from the front, and a driving printed circuit board 41 is connected to the connector so as to be orthogonal to the rear surface of the display module 3. Furthermore, an air blower 7 amp 42 and an input printed circuit board 43 are attached to the back plate 40c. Components such as the indicator lamp 1, the electric circuit for driving the indicator lamp, and the blower fan 42 are appropriately divided into functional blocks.
Easy to assemble and disassemble, easy to maintain, and easy to manage parts.

Furthermore, since the mutually parallel driving printed circuit boards 41 protruding from the back surface of each display module 3 function as a rectifying plate, the air blown by the air blower 7 amp 42 passes through the ventilation holes 29 of the display module 3 to the display lamps. 1 ventilation passage 14
This ensures that the display lamp 10 is cooled with forced air evenly.

[Effect of the invention 1] The present invention is configured as described above, and a plurality of display lamps are integrated as a display module, and a plurality of display monomers are further imaged as a display unit/),
Since a large number of indicator lamps and their indicator lamp drive circuits can be attached and detached as blocks of appropriate size, there is an advantage that assembly and maintenance can be easily performed in block units. In addition, a driving printed circuit board is connected to the connector perpendicularly to the rear surface of the display module arranged on the front of the case, and
The blower fan and input printed circuit board are attached to the back plate that covers the rear opening of the unit case, and components such as the numerous indicator lamps, the electric circuit for driving the indicator lamps, and the blower fan function properly. Since it is made up of blocks, it can be easily assembled and disassembled, maintenance can be performed easily, and parts management can also be easily performed.

[Brief explanation of the drawing]

FIG. 1 is a perspective view of the main parts of an embodiment of the present invention, FIG. 2 is an exploded perspective view of the main parts of the same, FIG. 3 is a front view of the main parts of the same, and FIG. 4 is a side view of the main parts of the same, and FIG. FIG. 5 is a sectional view of the main part of the same as above, FIG. 6 is an exploded perspective view of the main part of the same as above, FIG. 7 is a perspective view of the main part of same as above,
Fig. 8 is a sectional view of the main part of the same as above, Fig. 9 is a perspective view of the conventional example,
@io Figure (a) is a sectional view of the main part of the same as above, and Fig. 10 (b) is a front view of the main part of the same as above. 1 is a display lamp, 2 is a housing, 3 is a display module, 4 is a display unit, 21 is a printed circuit board for power supply, 40
40C is a unit case, 40C is a back plate, 41 is a driving printed circuit board, 42 is a 7-amp air blower, and 43 is an input printed circuit board. Figure 1 Figure 9 Snow Figure 10 (b) (0)

Claims (1)

[Claims] (1) A large image display device in which a large number of display lamps are arranged in a matrix on the front of a housing, and an image is displayed by controlling the light emission of each display lamp by a display lamp drive circuit housed in the housing. , a plurality of display modules in which a plurality of display lamps and a power supply printed circuit board are integrated are arranged in a row on the front of a unit case,
A drive printed circuit board with a display lamp drive circuit mounted on the back of the display module is removably protruded by connecting a connector, and the back board with the blower fan and input printed circuit board is attached to the rear opening of the unit case. What is claimed is: 1. A large-sized image display device, characterized in that a display unit is formed by covering the housing, and the display units are arranged in a matrix on the front surface of the housing.