JP2011053313A - Led display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an LED display device allowing easy and rapid replacement work of units of a large screen display device where display units are arrayed in tiled arrangement. <P>SOLUTION: The LED display device 1 includes: a plurality of LED units 2, 3 having a plurality of LED modules 7 and a mounting frame on both top and bottom ends of which a mounting part is projectingly provided; a driving device 4 driving light-emitting diodes of the LED module 7; a case body 5 where the LED units 2, 3 are arranged side by side in an opening 30 in the lateral direction of the opening 30; and fixing means 6, 6A attachably and detachably fixing the mounting parts of the mounting frame of the LED units 2, 3 to the case body 5. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an LED display device that includes a light emitting diode (LED) to form a display unit and displays an image.

  The LED display device is used, for example, for a road signal lamp or an airport guide light, but failure during use or deterioration of performance is inevitable. For this reason, repairs are performed when a failure occurs, and maintenance inspections are regularly performed. Here, it is strongly desired that repairs and maintenance inspections can be performed easily and quickly.

  Therefore, a large-screen LED display system having a structure excellent in workability for repair and maintenance inspection has been proposed (see Patent Document 1). This conventional large-screen LED display system integrally supports 32 display device units using a unit coupling frame including a positioning base, an outer frame, a back bar, and a reinforcing material. That is, the back side of each display device unit is supported by the unit coupling frame. The unit coupling frame supports the positioning base from the bottom at the base of the outer frame body, and integrally supports the rear surface of each display device unit by attaching a back bar. Each display device unit is attached to the unit coupling frame by assembling one display base unit at a time starting from the positioning base supported by the base of the outer frame body.

  The display device units arranged in a matrix with reference to the positioning base are more closely attached to each other by the connection plate and the fastening pin. In addition, each back bar of the unit coupling frame and a back column of each display device unit are screwed, and 32 display device units are accurately positioned and integrated.

  If there is a display unit that needs repair, only that unit needs to be removed from the unit coupling frame and replaced. In addition, the minimum unit of components constituting the system is an LED tile in which LED lamps are arranged in a matrix, and this LED tile is attached to the front surface of the tile parallel substrate by a connector, and on the front side of the screen. Since only necessary LED tiles can be easily attached and detached, it is possible to easily cope with failure of the LED chip and failure of the drive circuit.

Japanese Patent Laying-Open No. 2006-145890 (5th and 8th pages, FIG. 5-8)

  However, in order to replace the display device unit, the display device units assembled one by one from the positioning base are removed. Therefore, even when one display device unit is replaced, the display device unit is disposed close to the positioning base. The more display devices that need not be replaced, the more it is necessary to remove them.

  Then, it is necessary to remove the connection plate that connects the display device units to the display device unit to be removed, and to release the screwing between the back bar of the unit connection frame and the back column of each display device unit. . As a result, it takes time to remove the display unit. Also, at least the above-described removal work time is required for assembling and attaching the display device unit to be replaced. That is, the large-screen LED display system of Patent Document 1 has a drawback that it cannot easily and quickly replace a display unit that needs repair, and requires a long time.

  For example, airport guidance guide lights usually require maintenance and inspection within a limited working time at night, and if a long time is required for replacement of the display unit, all of the guidance guide lights installed in large numbers There is a risk that it will not be possible to perform maintenance and inspection.

  An object of this invention is to provide the LED display apparatus which can attach or detach an LED unit easily and rapidly.

  The invention of the LED display device according to claim 1 is a plurality of LED modules in which a plurality of light emitting diodes are arranged in a matrix on a substrate, and the LED modules are arranged adjacent to each other and attached to both upper and lower ends. A plurality of LED units each having a mounting frame with a protruding portion; a driving device for driving the light emitting diode; an opening on a front surface; and the opening so that emitted light of the light emitting diode is emitted from the front surface side And a case main body in which the LED unit is disposed adjacent to each other such that the mounting portion of the mounting frame is in the vertical direction of the opening in the lateral direction of the opening; And a fixing means for detachably fixing the mounting portion of the frame.

  In the present invention and the following inventions, each configuration is as follows unless otherwise specified.

  “Upper and lower ends of the mounting frame” means that the sky side in the direction in which gravity acts when the LED display device is installed on the ground surface, for example, is the upper end and the ground surface side is the lower end. The “vertical direction of the opening” means the direction of action of gravity, and the “lateral direction of the opening” means a direction orthogonal to the direction of action of gravity.

  The light emitting diode (LED) constitutes a display unit that displays an image or the like, and this display unit may be configured as, for example, a VMS (variable message sign) that variably displays characters and the like in full color.

  The driving device turns on the light emitting diode to display characters and the like, and may have a function of changing the display as appropriate.

  The fixing means can be, for example, screws (bolts) or screws and nuts. In the case of a screw, a screw insertion hole is formed in one of the case body and the LED unit mounting portion, a screw hole (tap) is formed in the other, and the screw inserted through the insertion hole is screwed into the screw hole. Thus, the mounting portion of the LED unit is fixed to the case body. Also, in the case of screws and nuts, screw insertion holes are formed in both the case body and the LED unit mounting part, and the nuts are screwed into the screws inserted through both insertion holes, so that the LED unit is mounted. The part and the case body are fastened together and fixed.

  According to the present invention, the LED unit is fixed to the case body and disposed in the opening of the case body by attaching the attachment portion of the attachment frame to the case body by the fixing means. Further, the LED unit is removed from the case body by removing the fixing means, so that the mounting portion of the mounting frame is not fixed to the case body. The LED units are individually attached to and detached from the case body.

  The invention of the LED display device according to claim 2 is the invention of the LED display device according to claim 1, wherein the case main body is provided with a pair of unit mounting plates so as to sandwich the opening in a lateral direction of the opening. Each of the LED units has a mounting portion of the mounting frame attached to the pair of unit mounting plates.

  According to the present invention, the LED unit is attached to or detached from the case body by attaching and detaching the attachment portion of the attachment frame to the pair of unit attachment plates of the case body by the fixing means.

  According to the first aspect of the present invention, the plurality of LED units are attached to or removed from the case body by attaching and detaching the attachment portions of the attachment frames to the case body by the fixing means. In the case of inspection, the LED unit can be easily and quickly replaced, and the replacement operation can be performed in a short time.

  According to the invention of claim 2, since the LED unit is attached to and detached from the pair of unit mounting plates of the case main body, the mounting structure of the LED unit in the case main body can be simplified, thereby facilitating maintenance and inspection. Therefore, it is possible to improve the workability.

The front view of the LED display apparatus which shows Example 1 of this invention. Similarly, the top view of an LED display device. Similarly, the rear view of an LED display device. Similarly, the right view of an LED display device. Similarly, sectional drawing of the XX direction of FIG. Similarly, the side view which shows the door opening state of the protective cover of an LED display apparatus. Similarly, an LED unit is shown, (a) is a schematic front view, (b) is a schematic side view. Similarly, the schematic front view of a mounting frame. Similarly, the schematic front view of another attachment frame. Similarly, the schematic side view which shows the attachment state of an LED unit. Similarly, the partial enlarged view of FIG. 10 is shown, (a) is A partial enlarged view, (b) is B partial enlarged view.

  Hereinafter, an embodiment of the present invention will be described with reference to the drawings.

  In the present invention, the plurality of LED units are disposed adjacent to the lateral direction of the opening of the case body, and attachment portions provided at both upper and lower ends are detachably attached to the case body by fixing means. The LED units are individually detached from the case body.

  1 to 11 show Embodiment 1 of the present invention. FIG. 1 is a front view of an LED display device, FIG. 2 is a plan view of the LED display device, FIG. 3 is a rear view of the LED display device, and FIG. The right side view of the display device, FIG. 5 is a sectional view in the XX direction of FIG. 4, FIG. 6 is a side view showing the open state of the protective cover of the LED display device, FIG. 7 shows the LED unit, (a) Is a schematic front view, (b) is a schematic side view, FIG. 8 is a schematic front view of a mounting frame, FIG. 9 is a schematic front view of another mounting frame, and FIG. 10 is a schematic side view showing an LED unit mounting state. 11 shows a partially enlarged view of FIG. 10, (a) is an enlarged view of the A portion, and (b) is an enlarged view of the B portion.

  In FIG. 1, an LED display device 1 is, for example, a guide light that is disposed on both sides or one side of a taxiway that guides an aircraft in an airport to a runway. And it has the screw | threads 6 and 6A as a fixing means. The LED display device 1 is configured by arranging three LED units 2 and one LED unit 3 in the horizontal direction in the figure, and arranging a plurality of LED modules 7 in a matrix of 5 rows and 11 columns. Has been.

  As shown in FIG. 7, the LED unit 2 includes a plurality of LED modules 7 and a mounting frame 8. The LED module 7 is formed, for example, by arranging and mounting a plurality of light emitting diodes (LEDs) 10 in a matrix of a required size on a printed circuit board 9 as a substrate having a rectangular shape and a circuit formed by a copper foil pattern or the like. ing. The light emitting diode 10 integrally incorporates LED chips of three colors, red, green, and blue, for example, in a flat-mount package of about 2 mm square. Here, the printed circuit board 9 may be configured by a so-called SMD (Surface Mount Device) type or COB (Chip On Board) type. The LED module 7 is arranged adjacent to the mounting frame 8 in 5 rows and 3 columns.

  The mounting frame 8 is made of, for example, stainless steel (SUS) and is formed into a rectangular frame having a predetermined height H1. As shown in FIG. 8, a plurality of mounting frames 8 are arranged on the flat upper surface 8a in the vertical and horizontal directions. Frames 11 and 12 are provided, and a rectangular opening 13 is formed between the frames 11 and 12. That is, the frames 11 and 12 are formed between the openings 13 and 13 by forming the opening 13 by punching the upper surface 8a. Similarly, a frame and an opening (not shown) are formed on the lower surface 8b.

  A plurality of mounting ears 14 as mounting portions are projected from the upper end of the lower surface 8b at a predetermined interval. The mounting ear 14 is a substantially rectangular flat plate, and an insertion hole 15 is formed therein. In addition, a plurality of mounting brackets 16 as mounting portions protrude from the lower end of the lower surface 8b at a predetermined interval. The mounting bracket 16 is provided corresponding to the mounting ear 14 and has a U-shaped cross section that protrudes toward the upper surface 8a as shown in FIG. 7B. The lower surface 16 b of the mounting bracket 16 is flush with the lower surface 8 b of the mounting frame 8 and the mounting ears 14. As shown in FIG. 8, an insertion hole 17 is formed in the upper surface 16 a of the mounting bracket 16. Each insertion hole 15 of the mounting ear 14 and each insertion hole 17 of the mounting bracket 16 are provided so as to be on the same straight line in the vertical direction of the mounting frame 8.

  A pair of positioning holes 18 and 18 are formed in the frame 12 on the upper surface 8a of the mounting frame 8 with the opening 13 interposed therebetween. The frame 12 is formed with a plurality of attachment holes 19 for each opening 13. Each LED module 7 has its positioning pin inserted into the pair of positioning holes 18, 18, and then a screw inserted into the mounting hole 19 from the lower surface 8 b side of the mounting frame 8 is screwed into the screw hole. , Fixed to the upper surface 8a of the mounting frame 8. The LED module 7 is disposed in a region surrounded by a dotted line in FIG. 8, and is in close contact with or close to the adjacent LED module 7. Thus, the mounting frame 8 has the LED modules 7 arranged in 5 rows and 3 columns as shown in FIG.

  Moreover, as shown in FIG.7 (b), the attachment frame 8 has provided the terminal block 21 in the frames 20 and 20 attached to the lower surface 8b. The terminal block 21 is electrically connected to the printed circuit board 9 of each LED module 7. The terminal block 21 is connected to a power supply device (not shown) via a cable. A handle 22 is provided on the side surface of the upper end side of the mounting frame 8. The LED unit 2 can be carried with the handle 22 held in hand.

  The LED unit 3 is configured by arranging LED modules 7 in 5 rows and 2 columns on a mounting frame 23 shown in FIG. The mounting frame 23 is formed in substantially the same manner except that the size of the mounting frame 23 is different from that of the mounting frame 8. The mounting frame 23 is provided with two mounting ears 14 and two mounting brackets 16 as mounting portions because the mounting frame 23 is smaller in the horizontal direction than the mounting frame 8.

  In FIG. 1, a main body case 5 is formed of, for example, stainless steel (SUS) into a flat rectangular tube whose front shape is a rectangle that is long in the lateral direction and shallow in depth, and includes LED units 2 and 3 and a pair of upper and lower fans 24 and 25. A plurality of pairs, a drive device 4 and a heat exchange device (not shown) are accommodated. On the outer surface of the top plate 5a, a pair of left and right rectangular flat plate-like upper heat shield plates 26 and 27 are disposed with a required gap therebetween. Further, on the outer surfaces of the left and right side surfaces 5b and 5c, Flat side heat shield plates 28 and 29 having substantially the same shape as the side surfaces 5b and 5c are disposed with a necessary gap therebetween. These heat shield plates 26 to 29 are made of a metal plate or the like having high heat shield properties, and shield and shield sunlight from heat, while suppressing an increase in temperature to the main body case 5 due to outside air.

The main body case 5 has a front surface facing the front surface, which is the light projecting side of the LED units 2, 3, opened almost entirely as a light projecting opening (opening) 30, and the front end having the light projecting opening 30 has As shown in FIG. 2, a horizontally long flat plate-shaped protective cover 31 having a light-transmitting property such as an acrylic plate that closes almost the entire surface of the projection opening 30 is provided. Here, it is preferable that the protective cover 31 is configured as a windshield cover that can withstand a predetermined wind pressure such as a jet jet of a jet aircraft or the like, and may be subjected to non-glare treatment to prevent reflection of external light such as sunlight. Good.
The protective cover 31 is configured to be openable and closable by attaching its upper end to a plurality of hinges 32 disposed at a required pitch in the longitudinal direction. In addition, as shown in FIG. 6, one end of a pair of left and right extendable gas dampers 33, 33 is attached to the left and right sides of the protective cover 31 so as to be swingable, while the pair of gas dampers 33, 33 The other end portion is attached to the left and right side portions of the main body case 5 at the end of the light projection opening 30 so that the open state of the protective cover 31 can be held by these gas dampers 33 and 33.

  Moreover, as shown in FIG. 3, the main body case 5 has a back door 34 disposed on the back. The back door 34 includes a pair of left and right back doors 34a and 34b, and has a double door structure that opens and closes from the center to the left and right by operating the handles 35a and 35b. Each rear door 34a, 34b is provided with a small door 36 on its outer surface so that it can be opened and closed. The main body case 5 is provided with a heat exchange device (not shown) on the inner surface of the rear door 34. An air supply hood 37 that sucks outside air into the main body case 5 through the small door 36 protrudes from the outer surfaces of the rear doors 34 a and 34 b, and the air in the main body case 5 is located above the air supply hood 37. An exhaust hood 38 for exhausting the air to the outside air is provided. The heat exchange device cools the air in the main body case 5 by exchanging heat with the outside air introduced into the main body case 5 from the air supply hood 37.

  As shown in FIG. 5, the case body 5 is on the front side of the opening 30 and sandwiches the opening 30 in the lateral direction of the opening 30 so that a plurality of pairs of a pair of unit mounting plates 39 and 40 and a pair of pairs are attached. Unit mounting plates 41 and 42 are provided. That is, the unit mounting plates 39 to 42 are arranged so that their mounting surfaces 39a to 42a are in the same plane. The LED unit 2 is attached to the pair of unit attachment plates 39 and 40, and the LED unit 3 is attached to the pair of unit attachment plates 41 and 42.

  The pair of unit mounting plates 39, 40 and the pair of unit mounting plates 41, 42 are made of, for example, stainless steel (SUS) and are formed in an L-shaped cross section as shown in FIG. 5d and the front lower end inner surface 5e are fixed by spot welding, for example. At this time, the mounting surface 39a (41a) of the unit mounting plate 39 (41) and the mounting surface 40a (42a) of the unit mounting plate 40 (42) are the same in the vertical direction of the opening 30 (vertical direction of the case body 5). Located on a straight line.

  Then, on the mounting surface 39a (41a) of the unit mounting plate 39 (41), as shown in FIG. 11A, screw holes (tap) corresponding to the mounting holes 15 of the mounting ears 14 of the LED units 2 and 3 are provided. 43, the mounting surface 40a (42a) of the unit mounting plate 40 (42) has a screw hole corresponding to the mounting hole 17 of the mounting bracket 16 of the LED units 2 and 3, as shown in FIG. A (tap) 44 is provided.

  Then, the mounting ear 14 of the LED unit 2 (3) is screwed into the screw hole 43 of the unit mounting plate 39 (41) with the screw 6 inserted into the mounting hole 15 through the washer 45, so that the unit mounting plate 39 (41). In addition, the mounting bracket 16 of the LED unit 2 (3) has a screw 6A inserted through the washer 46 in the mounting hole 17 and is screwed into the screw hole 44 of the unit mounting plate 40 (42). 40 (42). Thus, as shown in FIG. 10, the LED unit 2 has a pair of unit mounting plates 39 such that the mounting ears 14 and the mounting brackets 16 as mounting portions are in the vertical direction of the opening 30 in the opening 30 of the case body 5. , 40. Similarly, the LED unit 3 is attached to a pair of unit attachment plates 41 and 42.

  Each LED unit 2 is attached to a pair of unit attachment plates 39 and 40, and the LED unit 3 is attached to a pair of unit attachment plates 41 and 42, so that as shown in FIG. Is disposed adjacent to the opening 30 of the case body 5 and in the lateral direction of the opening 30. At this time, the LED units 2 and 3 are attached via the rubber packing 47. That is, air current, moisture, dust, etc. are prevented from entering between the LED units 2 and 3. And the emitted light of the light emitting diode 10 of the LED units 2 and 3 is emitted outward from the front side of the case body 5 to form a display.

  The pair of unit mounting plates 39, 40 and the pair of unit mounting plates 41, 42 are, for example, a plurality of rectangular penetrating holes between the screw holes 43, 43 and the screw holes 44, 44 of the mounting surfaces 39a-42a. The holes 48 and 49 are formed, and the above-described pair of upper and lower fans 24 and 25 are disposed in the through holes 48 and 49, respectively.

  Each fan 25 is configured by an air supply fan that blows air in the main body case 5 from the back side of the unit mounting plates 40 and 42 toward the mounting surfaces 40 a and 42 a, and each fan 24 is a unit mounting plate 39. , 41 is constituted by an exhaust fan that exhausts air from the attachment surfaces 39a, 41a side into the case body 5. The air exhausted into the case body 5 is subjected to heat exchange by the heat exchange device described above.

  Each unit mounting plate 39 and unit mounting plate 40 may be formed by one unit mounting plate, and each unit mounting plate 41 and unit mounting plate 42 may be formed by one unit mounting plate.

  Driving devices 4 and 4 and monitoring devices 50 and 50 for driving the light emitting diode 10 are disposed on the back side of the unit mounting plates 39 to 41 of the case body 5. The drive devices 4 and 4 are connected to a control device (not shown) and transmit video signals and the like from the control device to the LED modules 7 arranged in the row direction in the openings 30 of the case body 5. The monitoring devices 50 and 50 confirm whether or not a video signal or the like has been transmitted to the LED module 7.

  Next, the operation of the first embodiment of the present invention will be described.

  In order to replace the LED units 2 and 3, first, as shown in FIG. 6, the protective cover 31 is opened, and the opened state is held by a pair of left and right gas dampers 33 and 33. Then, the LED unit 2 or the LED unit 3 to be replaced is removed from the front side of the case body 5.

  That is, in order to remove each LED unit 2, in FIGS. 11 and 12, for example, the handle 22 is grasped by hand, and the screw 6 fixing the mounting ear 14 of the mounting frame 8 to the unit mounting plate 39 is loosened. The mounting bracket 16 of the mounting frame 8 is removed and the screw 6A fixing the mounting bracket 16 to the unit mounting plate 40 is loosened and removed. Thereby, the LED unit 2 is removed from the pair of unit mounting plates 39 and 40.

  In order to remove the LED unit 3, for example, the handle 22 is grasped by hand, the screw 6 fixing the mounting ear 14 of the mounting frame 8 to the unit mounting plate 41 is loosened and removed, and the mounting frame 8 is mounted. The screw 6A fixing the metal fitting 16 to the unit mounting plate 42 is loosened and removed. Thereby, the LED unit 3 is removed from the pair of unit mounting plates 41 and 42.

  In order to attach the LED unit 2 or the LED unit 3 to the case body 5, a pair of unit mounting plates 39, 40 or a pair of units are used by using the screws 6, 6 </ b> A as fixing means in the reverse operation to the above. It attaches to the attachment plates 41 and 42.

  In this manner, each LED unit 2, 3 can be individually attached to and detached from the case main body 5 with the mounting ear 14 and the mounting bracket 16 as the mounting portion of the mounting frame 8 by the screws 6 and 6 A as the fixing means. Since it is attached to the opening 30 of the main body 5 or removed from the opening 30 of the case main body 5, the LED units 2 and 3 can be easily and quickly replaced in the case of repair or maintenance inspection. It can be done in a short time.

  Further, since the LED unit 2 and the LED unit 3 are attached to and detached from the pair of unit mounting plates 39 and 40 and the pair of unit mounting plates 41 and 42 of the case body 5, the mounting structure of the LED units 2 and 3 in the case body 5. Can be simplified. Thereby, the maintenance check of the LED display apparatus 1 can be performed easily and rapidly, and workability | operativity can be improved.

  Note that the fixing means is not limited to the screws 6 and 6A. For example, the fixing portion and the unit mounting plates 39 to 42 of the mounting frame 8 are formed in a detachable and fixable locking portion and a locked portion. The unit mounting plates 39 to 42 may be formed so as to automatically connect and fix the mounting portions of the mounting frame 8.

  The LED display device of the present invention can be used as a signal device, a guidance device, a signboard / advertisement device, and a video device by displaying characters and video images on roads, airports, and plazas.

  DESCRIPTION OF SYMBOLS 1 ... LED display device 2, 3 ... LED unit 4 ... Drive device 5 ... Case main body 6, 6A ... Screw as fixing means 7 ... LED module 8 ... Mounting frame 13 ... Opening 14 ... Installation Mounting ears as parts, 16 ... mounting brackets as mounting parts, 39, 40 ... a pair of unit mounting plates, 41, 42 ... a pair of unit mounting plates

Claims (2)

A plurality of LED modules in which a plurality of light emitting diodes are arranged in a matrix on a substrate, and a plurality of mounting frames in which the LED modules are disposed so as to be adjacent to each other and mounting portions project from both upper and lower ends An LED unit;
A driving device for driving the light emitting diode;
The LED has an opening on the front surface, and the mounting portion of the mounting frame is in the vertical direction of the opening in the opening and in the lateral direction of the opening so that the emitted light of the light emitting diode is emitted from the front surface side. A case body with adjacent units;
Fixing means for detachably fixing the mounting portion of the mounting frame of the LED unit to the case body;
An LED display device comprising:   The case body is provided with a pair of unit mounting plates so as to sandwich the opening in the lateral direction of the opening, and each of the LED units has a mounting portion of the mounting frame attached to the pair of unit mounting plates. The LED display device according to claim 1.

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