JP2016033635A - Indicator - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an indicator enabling simple transportation, installation, withdrawal and storage, and having a simple structure at low cost.SOLUTION: An indicator is linked with plural base members having a light-emitting diode integrated element, and can be bent between the base members. In each base member, provided is a signal processing circuit that has at least one system in which plural light-emitting diode control circuits are electrically connected in series. The light-emitting diode integrated element is electrically connected to each light-emitting diode control circuit. The signal processing circuit provided in each base member is electrically connected to each other.SELECTED DRAWING: Figure 1

Description

  The present invention relates to a display device that can be easily transported, installed, withdrawn, and stored.

  A display mounted with a light-emitting diode (LED) is attracting attention as an electronic signboard (digital signage) that is an information transmission means such as information transmission because it can save energy, have high brightness, and have a large screen. Electronic signage can be expected to be used in a wide range of applications such as advertising / event industry, marketing industry, home appliance industry, transportation / communication industry.

  When such a display or electronic signboard is used for irregular or short-term events (events), it is desirable that it can be easily transported, installed, withdrawn and stored. The same applies to information transmission in the event of an unexpected disaster or emergency.

JP 2011-150197 A

  However, it is difficult to easily store an LED-mounted display or electronic signboard, especially in the case of a large size, and it is difficult to handle during transportation, installation, withdrawal and storage.

  The display according to the present invention includes a base member, wherein a plurality of light emitting diode integrated elements are disposed on the base member, and can be bent at a boundary between the aggregates of the light emitting diode integrated elements.

  In addition, the display device according to the present invention includes a base member, and in the base member, a signal processing circuit having at least one system in which a plurality of light emitting diode control circuits are electrically connected in series is electrically connected. A light emitting diode integrated element is electrically connected to each of the light emitting diode control circuits, and can be bent at the boundary of each system connected to the signal processing circuit.

  Further, the display device according to the present invention includes a signal processing circuit having at least one system in which a plurality of base members are connected, and a plurality of light emitting diode control circuits are electrically connected in series to each of the base members, A light emitting diode integrated element is electrically connected to each of the light emitting diode control circuits, and the signal processing circuit disposed on each of the base members is electrically connected to be bent between the base members.

It is the front view and side view of a display which concern on 1st embodiment of this invention. It is sectional drawing of the indicator concerning 1st embodiment of this invention. It is a side view of the indicator at the time of winding concerning the first embodiment of the present invention. It is a block diagram of the indicator and display peripheral device concerning 1st embodiment of this invention. It is a block diagram of the LED integrated element in the display concerning 1st embodiment of this invention, an LED control integrated circuit, and a signal processing circuit. It is the front view and side view of a display which concern on 2nd embodiment of this invention. It is a block diagram of the LED integrated element in the display concerning 2nd embodiment of this invention, an LED control integrated circuit, and a signal processing circuit. It is sectional drawing of the indicator concerning other embodiment of this invention. It is a photograph (when spread) of the display of the present invention. It is a photograph (at the time of winding) of the display of this invention.

  Hereinafter, specific embodiments of the present invention will be described with reference to the drawings.

  A display according to this embodiment will be described. FIG. 1 shows a matrix type LED display. The top view of FIG. 1 is a plan view, and the bottom view is a side view.

  The LED display 101 is obtained by connecting LED mounting units 103 having LED light emitting units 102 in the horizontal direction (X direction).

  FIG. 2 is a cross-sectional view in the X direction of the LED display 101 to which the LED mounting units 103 shown in FIG. 1 are connected. An LED integrated element 202 and an LED control integrated circuit 203 are mounted on the printed board 201. The LED control integrated circuit 203 is a circuit in which a driver circuit (not shown) and a PWM control circuit (not shown) are integrated. The printed circuit boards 201 are connected by electrical wiring 205. Further, a reinforcing member 204 is provided on the side surface, and the surface is covered with an exterior 206.

  A plastic member 207 is provided on the back surface to enable bending and extension. As the plastic member, a vinyl-based material, a waterproof sheet material, or the like can be used. As a result, since the printed circuit boards 201 are connected by a plastic member, as shown in FIG. 3, the LED display 101 can be wound in a cylindrical shape in the X direction.

  Further, in order to easily wind up the LED display 101, the side surface of the LED mounting unit 103 is inclined as shown in the side view of FIG.

  Further, a reinforcing material 208 is attached to the back surface of the plastic member 207 in order to improve toughness.

  In the LED mounting unit 103, the LED integrated element 202 is arranged on the printed board 201 as described above, and light emitted from the LED integrated element 202 is emitted from the LED light emitting unit 102.

  The LED integrated element 202 has a vertical and horizontal size of about 5 mm to 10 mm, and each of the three primary color LEDs is mounted. By adjusting the light emission intensity of each LED, it is possible to emit several thousand colors. This LED integrated element 202 is arranged in the longitudinal direction (Y direction) of the rectangular printed board 201. In this embodiment, the LED integrated elements 202 are arranged on the printed circuit board 201 in one row.

  Here, a plastic member is used for connecting the printed circuit boards 201, but a mechanical mechanism such as a hinge or a metal jig may be used. Here, the method of grouping the display devices is not limited to the winding method, and a structure that can be bent and extended by the bellows method is also conceivable.

  An example of a specific display form is a 10-character display in which one LED integrated element 202 is equivalent to one dot, the LED integrated elements 202 are arranged at intervals of 25 mm in length and width, and one character is composed of 16 × 16 dots. It is. As a result, the LED integrated element 202 of 16 dots in the Y direction, 160 dots in the X direction, and 2,560 dots (2,560 in total) is arranged, so that the prototype size of the light emitting surface is about 40 cm in the Y direction and about 4 m in the X direction. become. Here, the element spacing, the number of dots, the number of elements, and the size of the display are not limited to this.

  An LED control integrated circuit 203 is integrated with the LED integrated element 202 on the printed circuit board 201. With this integrated structure, the connection with the display control device can be reduced.

  The printed board 201 has a structure for diffusing heat generated from the LED integrated element 202 and the LED control integrated circuit 203. As a specific example, the printed board 201 is a multi-layer plate, the inner metal surface is used as a heat diffusing / dissipating surface, the substrate of the printed board 201 is close to the characteristics of the metal, the aluminum board is used, the printed board There are methods such as attaching metal to the surface of the metal.

  By diffusing heat in this way, temperature rise in the LED integrated element 202 and the LED control integrated circuit 203 can be prevented, so that the light emission of the LED integrated element 202 and the operation of the LED control integrated circuit 203 can be stabilized and deterioration can be prevented. Can be prevented.

  The printed circuit board 201 on which the LED integrated element 202 and the LED control integrated circuit 203 are mounted and the electrical wiring 25 arranged vertically and horizontally are coated on the surface with a non-conductive resin.

  Furthermore, waterproof members are used for the exterior 206 and the reinforcing material 208. As a result, the display of this embodiment has excellent waterproof and dustproof performance.

  FIG. 4 shows a configuration diagram of the display and the control device.

The control system inside and around the display 401 of this embodiment will be described.
This control system includes a power circuit 403 that generates a stable DC voltage from a commercial power supply, a driver circuit 405, a PWM control circuit 406 that controls lighting of LEDs, and a signal processing circuit 407. Further, the data transfer circuit 408 transmits display data to the signal processing circuit 407.

  The power circuit applies a direct current power of about 80 A (at maximum load) to the LED integrated element 404 in the display to light it. The power circuit 403 uses a low-loss device (such as a switching regulator element) to reduce the power loss of the circuit, thereby efficiently generating a stable constant voltage.

  Next, the control device 402 of the display 401 will be described.

  The control device 402 includes an OMAP-L138 (TI microcomputer) mounted module (Phytronics product) 409, a liquid crystal display (touch panel compatible) 410, and an illuminance sensor 412. The liquid crystal display 410 is connected to the liquid crystal display circuit 411, and the illuminance sensor 412 is connected to the illuminance sensor circuit 413.

  OMAP-L138 is a CPU used for smartphones, has low power consumption, can be equipped with OS such as Linux, has excellent performance such as built-in liquid crystal display circuit, etc. Control of the display of this embodiment It enables interactive operation using the liquid crystal display necessary for the device. In this embodiment, the OMAP-L138 is used as the CPU, but another CPU may be used.

  The illuminance sensor 412 and the illuminance sensor circuit 413 automatically adjust the light emission luminance in accordance with changes in the external environment. The illuminance sensor 412 is arranged at the display or around the display. Alternatively, the sensing signal may be transmitted wirelessly to the control device by being arranged at a predetermined position in the place (indoor) where the display is installed.

  The control device 402 has a waterproof performance by using rubber packing or the like for the case, and the connection connector also has a simple waterproof / dustproof performance by using a waterproof type.

  The display of this embodiment can be used by connecting to a general-purpose personal computer 414 via a wired or wireless Internet line. Further, in the display device of this embodiment, it is possible to use the display device alone (stand-alone) by using the USB memory 415 storing the dot pattern representing the display character string.

  The operation of the display will be described using the following example. FIG. 5 shows a basic configuration of a display device composed of 8 × 8 = 64 pixels.

  The basic configuration includes signal processing circuits 503 (A to H) and LED control integrated circuits 502 and LED integrated elements 501 units (1 to 8) connected to the signal processing circuits 503 (A to H). A signal processing circuit 503 having one system in which a plurality of LED control circuits 502 are electrically connected in series is electrically connected, and an LED integrated element is electrically connected to each LED control circuit.

  A signal 505 for controlling the display unit includes information for selecting one of the signal processing circuits 503 (A to H) and units (1 to 1) of the LED control integrated circuit 502 and the LED integrated element 501 connected to the selected signal processing circuit. 8) It has information for selecting one of them.

  Further, the selected LED integrated element 501 has information (luminance information) on the emission intensity of each of the red, green, and blue diodes, that is, information on the amount of current that flows through each diode.

  In this way, several thousand colors can be emitted by individually controlling the emission intensity of each of the red, green, and blue diodes.

  For example, in order to cause the LED integrated element 501 of D4 to emit red light, information for selecting the signal processing circuit 503 (D), information for selecting the unit (4) of the LED control integrated circuit 502 and the LED integrated element 501, and red The luminance information of the diode may be a value other than 0%, and the luminance information of the green and blue diodes may be supplied with a signal having 0% information.

  In order to emit white light, the current amounts of the red, green, and blue diodes may be made approximately the same.

  In the display of this embodiment, the LED control circuit and LED integrated element system connected to the signal processing circuit are arranged on a base member such as each printed circuit board for each signal processing circuit (one system in this embodiment).

  FIG. 6 shows a front view and a side view of the display of this embodiment. In the display of the present embodiment, the LED light emitting units 602 are arranged in two rows in each LED mounting unit 603. In other words, LED integrated circuits are arranged in two rows on a printed board (not shown).

  FIG. 7 shows a configuration diagram of the LED integrated element 701, the LED control integrated circuit 702, and the signal processing circuit 703 in the display of this embodiment. Units of LED integrated elements 701 and LED control integrated circuits 702 are connected to each signal processing circuit 703 in two rows.

  A signal processing circuit 703 having two systems in which a plurality of LED control circuits 702 are electrically connected in series is electrically connected, and an LED integrated element is electrically connected to each LED control circuit.

  In the operation of the display device of this embodiment, in addition to the operation of the first embodiment, the signal processing circuit 703 distributes signals to columns connected to each circuit (for example, selection between A1 and A2).

  In the display device of the present embodiment, the LED control circuit and LED integrated element system connected to the signal processing circuit is arranged for each signal processing circuit (two systems in this embodiment) on a base member such as each printed circuit board.

  By arranging the LED integrated elements 22 in two rows on the printed circuit board 21 as in this embodiment, it is possible to reduce the bonding of the electrical wiring at the connection portion of the printed circuit board in the first embodiment by half. Reliability can be improved.

  In addition, by concentrating and mounting the circuits for two rows, it is possible to reduce a useless space in the circuit arrangement, so that the width necessary for arranging one row of circuits on the printed circuit board can be substantially reduced. it can. Therefore, since the width of the connecting portion can be increased by the narrowed width, the degree of freedom for bending at the connecting portion can be improved.

  In the present embodiment, an example in which two rows are arranged has been shown, but the same effect can be obtained if there are a plurality of rows even if the rows are not two.

  In the present invention, the plastic member is disposed on the entire back surface, but the plastic member may be disposed only between the LED mounting units as shown in FIG.

  Assuming the case of carrying the display of the present invention in hand, the length in the vertical direction (Y direction) is 40 cm to 1 m and the length in the horizontal direction (X direction) is 20 cm to 2 m. Is desirable. In this case, the width of the LED mounting unit is 20 mm or more and 40 mm or less.

  In the LED mounting unit of the present invention, the LED integrated element is arranged on a rectangular printed board, but the shape of the printed board may not be rectangular but may be square, trapezoidal, or other shapes such as a curved shape. Shape may be sufficient.

  In the LED mounting unit of the present invention, the LED integrated element is arranged on the printed board using a printed board as a base member. However, other materials such as a resin board and an insulating board may be used instead of the printed board. The same effect can be obtained even if it is arranged on a substrate or a string-like object.

  In the present invention, a display device in which a plurality of LED mounting units are connected is shown. However, a single plastic material such as a vinyl sheet, cloth, paper or the like is used as a base member, and a plurality of LED integrated elements are provided on the base member. If it is the arranged display, it can be bent at the boundary between the aggregates of the LED integrated elements, and the same effect can be obtained.

  That is, if there is a plastic member at the boundary between the aggregates of the LED integrated elements, it can be bent at the boundary, so that the same effect can be obtained. In particular, if each boundary line between the aggregates of the LED integrated elements is substantially parallel, it can be easily wound or folded.

  Further, in the base member, as shown in FIG. 5 or FIG. 7, a signal processing circuit having at least one system in which a plurality of LED control circuits are electrically connected in series is electrically connected to each of the LED control circuits. If the LED integrated elements are arranged so as to be electrically connected and the assembly of the LED integrated elements is connected to the signal processing circuit so that the LED integrated elements can be bent at each boundary, the influence on the electric wiring due to the bending can be reduced. It can be minimized.

  In the LED integrated element of this embodiment, diodes of three colors of red, green, and blue are used, but one color or two colors may be used.

101, 401, 601 LED display 102, 602 LED light emitting unit 103, 603 LED mounting unit 201, 801 Printed circuit board 202, 404, 501, 701, 802 LED integrated element 203, 502, 702, 803 LED control integrated circuit 204, 804 Reinforcement member 205, 504, 704, 805 Electrical wiring 206, 806 Exterior 207, 807 Plastic member 208, 808 Reinforcement material 402 Controller 403 Power circuit 405 Driver circuit 406 PWM control circuit 407, 503, 703 Signal processing circuit 408 Data transfer Circuit 409 OMAP-L138 mounted module 410 Liquid crystal display 411 Liquid crystal display circuit 412 Illuminance sensor 413 Illuminance sensor circuit 414 General-purpose personal computer 415 USB memory 505, 705 Control signal

Claims (3)

Having a base member,
A plurality of light emitting diode integrated elements are disposed on the base member,
A display that can be bent at a boundary between the assembly of the light emitting diode integrated elements. Having a base member,
In the base member, a signal processing circuit having at least one system in which a plurality of light emitting diode control circuits are electrically connected in series is electrically connected, and a light emitting diode integrated element is electrically connected to each of the light emitting diode control circuits. connection,
A display that can be bent at the boundary of each system connected to the signal processing circuit. Multiple base members are connected,
A signal processing circuit having at least one system in which a plurality of light emitting diode control circuits are electrically connected in series to each of the base members;
A light emitting diode integrated element is electrically connected to each of the light emitting diode control circuits,
The signal processing circuit disposed on each of the base members is electrically connected;
An indicator that can be bent between the base members.