JPH03219280A - Display unit - Google Patents

Abstract

PURPOSE:To facilitate repairing operation and increase the operation speed by providing a 1st unit with feed connectors for many light emitting elements and light receiving elements and providing a 2nd unit with a frame body which is fitted in the 1st unit while covering the back periphery of the 1st unit and a light emitting driving circuit and connectors for feeding power to the connectors. CONSTITUTION:Holes 5 where the light emitting elements 4 are arranged in matrix and holes 6 for anodes are formed in the front surface of the 1st unit A and those holes are linked with the back surface respectively. Further, a step part 7 for fitting the 2nd unit is formed at the back surface side of the peripheral part of the 2nd unit B. Further, light emitting element wiring devices 10 are stuck on the back surface with an adhesive, etc., so that each of the devices corresponds to four light emitting elements 4. Each wiring device 10 has a hole 11 that the rear main bodies of the light emitting elements 4 penetrate, a hole 12 for connection with the anode terminals of the light emitting elements and an arm part 13, and a connector 14 is provided at one end of the arm part 13. Consequently, the display unit can easily be repaired according to the kind of a fault.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention (Field of Industrial Application) The present invention relates to a display unit in which light emitting elements are arranged in a matrix.

(Prior Art) Conventionally, there have been display devices in which light-emitting elements are arranged in a matrix, in which the display screen is divided into blocks, that is, units, to obtain a surface. By doing this, if the display device becomes defective, it can be easily repaired by inspecting each unit and replacing the unit.

(Problem to be Solved by the Invention) However, unit failures can be broadly classified into those due to defects in the light emitting element and those due to failures in the lamp drive circuit. If this was the case, the defective light-emitting element had to be removed from the unit, but there was a problem that it was extremely difficult to handle one or a few elements from among the elements that were densely packaged. there were.

Further, in the case of a failure of the lamp drive circuit, there is a problem in that although the light emitting element can be used, the light emitting element cannot be used while the lamp drive circuit is repaired.

The present invention has been made to solve the above problems,
The purpose is to provide a display unit that allows repair work to be performed quickly and easily in the event of a failure.

[Structure of the Invention] (Means for Solving the Problems) The display unit of the present invention is formed by combining a first unit and a second unit. The first unit has a large number of light emitting elements arranged in a matrix on the front part, and a connector for connecting electrodes of the light emitting elements on the back part. The second unit has a frame that fits with the first unit so as to cover the back of the first unit, and a light emitting element drive circuit and a connector for supplying power to the connector on the back. Become.

In addition, Claim 2 (hereinafter referred to as Box 2 invention)
Claim 1 is referred to as the first invention).
The light emitting element is a fluorescent lamp, and the fluorescent lamp is the first
When installed in a unit, the back of the fluorescent lamp protrudes from the back of the first unit, and the second unit has a first vent in the back and a second vent in at least one of the top and bottom surfaces. It is characterized by having a ventilation hole.

(Function) The display unit of the present invention electrically supplies power from outside the display unit, inputs a lighting signal, and supplies power to each light emitting element from the drive circuit through a connector in accordance with the lighting signal. Display a black and white image.

In addition, structurally, the light emitting element portion and the light emitting element driving portion can be easily separated by separating the first unit and the second unit after removing the connector and the pusher.
The display unit can be easily repaired by replacing either one depending on the type of failure.

According to the second aspect of the invention, the back of the fluorescent lamp, which becomes hot inside the display unit, is cooled by taking in air from the first vent and discharging the air from the second vent. For example, when the second vent is located on the upper surface of the second unit, the air flow is formed by natural convection due to the rising of high-temperature air. Moreover, if forced air supply means is used on the first vent side, air flow will be actively formed. Since the second vent is provided on the second unit side, it can be provided near the back of the fluorescent lamp that protrudes from the back of the first unit, making it easy to cool the back of the fluorescent lamp. be.

(Example) An example of the present invention will be described with reference to FIGS. 1 to 8. 1 is a display unit, the first unit A,! 2
(7) Unit B consists of the cover of the second unit A.

The first unit has holes 5 for light-emitting elements in which a large number of light-emitting elements A are arranged in a matrix, for example, two stages in the vertical direction and eight rows in the left-right direction, and holes 6 for anodes, which will be described later, are formed on the front surface of the first unit. , are formed so as to communicate with each other on the back side. Furthermore, a stepped portion 7 is formed on the back side of the circumferential side of the second unit, into which a second unit, which will be described later, is fitted. Roughly, a light emitting element wiring device 10 is pasted on the back surface with an adhesive or the like so that one light emitting element wiring device 10 corresponds to each of the four light emitting elements 4. The wiring device 10 includes a hole 11 through which the rear body of the light emitting element 4 passes, a hole 12 for connection to the anode terminal of the light emitting element, and an arm portion 13, and a connector 14 is provided at one end of the arm portion 13. . The hole 12 and the connector 14 are electrically connected by a conductor 16 in a predetermined pattern provided on a flexible substrate 15, respectively. Note that the wiring device 10 has a shape shown in FIG. 7 by bending a flexible substrate 15 having a predetermined shape. Note that after passing the anode through the hole 12, soldering is performed to bond it.

The light emitting element 4 will be explained.

This lamp is a fluorescent lamp (in the first invention, a CRT or LED may be used as long as it emits light electrically).
The envelope 21 is formed into a cylindrical body made of iron, the inner and outer surfaces are coated with an insulating coating made of glass, and the front end of the envelope is coated with a transparent glass coating. A light section 22 is provided, and a color filter 23 is formed to roughly cover the light-transmitting section. The inside of the envelope 21 is partitioned by a cross-shaped partition plate on the transparent side, and each partitioned room has fluorescent lights that emit R, G, B, and G (red, green, blue, and green). A cylindrical body 24 coated with a membrane is disposed, and an anode 25. is provided at one end of each chamber V. A discharge communication hole 26 is provided at the other end. Further, a stem 27 is provided at the bottom of the envelope 21, and a common filament 28 that performs discharge with each anode 25 is erected on this stem. An anode lead wire 29 and a filament lead wire 30 protrude from the outside of the envelope 21, respectively.

The light emitting device configured in this manner is capable of displaying full color by arbitrarily forming a discharge between each anode 25 and the common filament 28.

The second unit B has a frame 41 that fits into the step 7 of the first unit, and a circuit placement stand 42 that extends backward from the bottom of the frame 41. The drive circuit board 43 shown schematically at the top is fixed by inserting screws (not shown) from the bottom of the circuit arrangement table 42 and screwing them into rod-shaped screw receivers E provided on the drive circuit board 43. It is formed by covering it and fixing it with screw G.

On the front side of the drive circuit board 43, four connectors 44, which are connected to the aforementioned connectors 14, are arranged laterally. Although not shown, these connectors 44 are connected to a lighting control circuit and a power source provided on the drive circuit board. Although not shown, the filament lead wire 30 of each light emitting element 4 is also connected by a connector-attached arrangement device in the same way as the anode lead wire 29, and is configured to be connected to a connector (not shown) on the drive circuit board. are doing. In addition, the frame body 41 is connected to the iF in the shape of an opening and the circuit placement table 42.
A second ventilation hole J is provided on the lower surface of the first ventilation hole H frame 41 in the game area.

In this embodiment, with the above-described configuration, an arbitrary discharge is formed between the anode filaments of each light emitting element 4 by power supply from the drive circuit board, and characters, images, etc. are displayed. In this embodiment, when the frame body is made of resin and a display screen is formed by placing a plurality of display units adjacent to each other, the anode hole 12 on the periphery of the display unit is insulated from the anode hole of the adjacent display unit. becomes certain. Furthermore, since there is only one connector for each of the plurality of elements, the efficiency of separating the first unit and the second unit is significantly improved.

Note that although the first unit and the second unit are simply connected by fitting, they may be fixed together by screws or the like after fitting.

Next, 51 is a shelf frame, which has a plurality of vertical plates 52 arranged in parallel according to the width of the display unit, and each of the vertical plates 5
A plurality of display units 1 are provided with shelf-like support plates 53 between the display units 1 and 2.
are provided at intervals that allow for installation of

When the display unit 1 is mounted on the support plate 53, the display unit 1 is attached to all of the support plates 53.
In order not to block the second ventilation port J, a ventilation portion 54 is cut out and communicated with the front surface, facing the second ventilation port J.

Also, opposite to each of the vertical plates 52 is the shelf-shaped support plate 5.
A support plate 55 in the form of a crosspiece is provided between each of the three spaces in accordance with the height dimension of the display unit 1, and this support plate 55 supports the display unit 1 when the display unit 1 is mounted on the support plate 55. Be careful not to block the second vent J.
A ventilation section 56 that is open to the front surface is formed opposite to the second ventilation port J. Note that the structure of the support plate is the same as that of the second
Any structure that does not block the ventilation holes is sufficient.

Next, the operation of this embodiment will be explained.

The display unit 1 is mounted and supported on the shelf-shaped support plate 53 of the shelf frame 51, and both sides of the lower surface of the display unit 1 are supported by being engaged with the opposing crosspiece-shaped support plate 55. Then, each light emitting section G, B, G, R of the light emitting element 4 is driven by the driving circuit board 43.
is selectively blinked, and the display unit 1 arranged in a planar manner
A display is formed on the front side of the screen.

The airflow generated by driving the air cooling device provided on the back side of the shelf frame 52 is transmitted to the first
The ventilation passes through the inside of the display unit 1 from the ventilation hole H, flows out to the second ventilation hole J opened at the front lower surface of the display unit 1, and is opened at the front surface of the shelf-shaped support plate 53. A ventilation section 56 that exhausts air from the section 54 to the front of the display unit 1 or is open to the front section between the crosspiece-shaped support plates 55.
The fluorescent lamp 4 is cooled by this air flow.

Further, according to the structure of this embodiment, the pitch between the display units 1 supported by the support plates 53 and 55 becomes -, and the display quality is improved.

In the above-mentioned embodiment, the structure in which the shelf plate-shaped obstruction plate 53 and the crosspiece-shaped support plate 55 are used together has been described as the support plate, but either one of the support plates may be used. Furthermore, in the case of a structure using a shelf-shaped support plate 53, the ventilation portion 54 is formed by a notch on the front side, so that strength is not impaired.

[Effects of the Invention] In the display unit of the present invention, a first unit is provided with a large number of light emitting elements and a power supply connector for the light emitting elements, and a second unit is provided so as to cover the back of the first unit. Since a frame body that fits with the first unit, a light emitting element drive circuit and a connector for supplying power to the connector are arranged in the frame body, the light emitting element part and the light emitting element driving circuit part can be easily connected by removing the connector and the connector. Depending on the type of failure, for example, in the case of a failure due to a defect in the light emitting element, repair can be completed by replacing the first unit; for example, in the case of a failure in the drive circuit. In this case, the repair can be completed by replacing the second unit, which simplifies the repair work and improves the work speed.

Roughly, according to the second aspect of the invention, the display unit has a first vent formed in the back of the second unit, and a second vent formed in at least one of the top and bottom of the second unit. Therefore, the amount of air flowing between the first vent and the second vent is sufficient to cool the back of each fluorescent lamp, and the fluorescent lamp does not reach a high temperature. Fluorescent lamps are placed closely together to enable high-density, high-quality display.

Further, a second vent is provided at a position avoiding the back of the first unit that is attached to the front of the second unit, and
Since the back of the fluorescent lamp is configured to protrude from the back of the first unit, the back of the fluorescent lamp can be cooled well. Since the characteristic of a fluorescent lamp is that the discharge state is dominated by the lowest temperature point of the bulb, the optimal discharge state can be controlled by controlling the cooling of the back of the fluorescent lamp. Roughly speaking, the second unit is
Since the unit can be made thinner than the unit shown in FIG.

[Brief explanation of drawings]

1 to 11 show some embodiments of the present invention, FIG. 1 is a partially omitted rear perspective view of the first unit, FIG. 2 is a partially omitted rear perspective view of the first unit, and FIG. 3 is a perspective view of the light emitting element, FIG. 4 is a front perspective view with the first unit partially omitted, FIG. 5 is a sectional view taken along line A-A' in FIG. 4, and FIG. 6 7 is a partially omitted rear perspective view of the display unit, FIG. 7 is a perspective view of main parts showing the connector part of the first unit, FIG. 8 is a partially exploded sectional view of the display unit, and FIG. The figure is a perspective view showing the second unit of the display unit divided, and FIG. 10 is a perspective view showing a state in which a plurality of display units are arranged in a shelf frame. FIG. 11 is a partially omitted sectional view taken along line II-II in FIG. 10. 4...Light emitting element, A...1st unit. 41...Frame body, 14.44...Connector. B... second unit, 43... light emitting element drive circuit.

Claims (2)

[Claims] (1) A first unit in which a plurality of light emitting elements are arranged in a matrix in the front part and a connector for connecting electrodes of the light emitting elements in the back part; and a back part of the first unit in the front part; 1st to cover
A display unit comprising: a second unit having a frame fitting with the unit; and a second unit having a light emitting element driving circuit and a connector for supplying power to the connector on the back thereof. (2) The light emitting element is a fluorescent lamp, and when disposed in the first unit, the back protrudes from the back of the first unit, and the second unit has a first vent on the back. 2. The display unit according to claim 1, further comprising a second vent on at least one of the opening, the upper surface, and the lower surface.