JP2010152304A - Illumination light display device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination light display device with high visibility so that an indicator applied for a management system of a picking facility can easily and visually confirm the illumination state of a light guide plate even at an installation place out of view height. <P>SOLUTION: This illumination light display device is constituted by an assembly of: the rectangular light guide plate 10 using as an illumination light surface a front side 11, and edge end surfaces 12 on the upper side and lower side; light emitting diode (LED) modules 20 which have a plurality of LEDs 22 arranged in an array form on a circuit substrate using the light guide plate 10 as an illumination light source and are oppositely arranged on side edge end surfaces 13, 14 of the light guide plate; and a case 30 which accommodates the LED modules 20 and makes a recessed frame structure surrounding the peripheral part of the light guide plate 10 except for the illumination light surface and shielding light to the space to the periphery. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

  The present invention relates to a surface illumination type illumination display device applied to, for example, an indicator lamp for instructing a worker of a picking work area in a physical distribution management system.

  As a picking system installed in a distribution warehouse or distribution center, picking work areas such as product storage shelves are divided into small sections, and a picking indicator is placed in each section to instruct workers from the central control unit Picking management systems that display work information have become widespread (see, for example, Patent Document 1).

  FIG. 20 is a structure and layout diagram of a conventional picking indicator applied to the above-described picking management system. 1 is a picking indicator, 2 is a power supply connected to the picking indicator 1, a signal cable, and 3 is picking. Product storage shelves arranged in the work area of the equipment, and a picking indicator 1 is installed in front of the shelf frame for each shelf section of the product storage shelf 3.

  Here, the picking display 1 in the illustrated example includes a 7-segment LED (light emitting diode) 1b for displaying command information such as a picking quantity in numbers on the front surface of the case 1a, and a work confirmation button 1c. The LED 1b of the display unit 1 arranged in the designated shelf section is blinked by the command from, and the worker is instructed about the quantity of products to be picked from this shelf section. Further, when the worker presses the confirmation button 1c after finishing the picking work according to the content of the command, a work completion confirmation signal is sent to the central command device.

  On the other hand, recently, the picking management system has been improved so as to improve the efficiency of picking work, and a new type of picking indicator has been developed and commercialized with the introduction of the management system.

  For example, in a large-scale picking system in which multiple workers perform picking work in the same work area, the picking indicator is equipped with indicators with different emission colors, and each worker is assigned a “color”. In addition, the worker accesses the shelf division of the display with the “color” lamp lit by the command from the central commanding device, and then displays the picking quantity displayed on the numeric display attached to the display. There is known a picking management system in which a picking operation of a supported quantity is performed with reference to the above information.

  As for the indicator lamp used in the picking display, recently, an LED with low power consumption and long life is used as a light source, and a light guide plate is combined with this to illuminate the front surface of the light guide plate. Many types of illuminated display lamps are employed (see, for example, Patent Document 2). In this edge light type illumination display lamp, an LED module (a structure in which a plurality of LEDs are arranged in an array on a circuit board) is arranged opposite to an edge end face (for example, left and right sides or one edge end face) of a light guide plate. The LED module is surrounded by a frame-shaped light-shielding case (frame) that surrounds the edge end faces of the outer periphery of the light guide plate. In addition, the light guide plate is provided with a reflective dot sheet on the back surface side, or light diffusing fine particles (for example, silicone resin fine particles) having different refractive indexes are dispersed and mixed in a transparent resin base material (for example, acrylic resin) of the light guide plate. The LED light incident from the edge end face is guided toward the front surface of the light guide plate to illuminate the front surface. Also, LED modules with different emission colors (white, red, blue, green, yellow, orange LEDs, etc.) are combined, and the illumination color of the light guide plate is changed by controlling the lighting of each color LED. is there.

  In addition, in order to prevent misidentification of picking quantity and misoperation of the display, there is also a management system that automatically counts and returns to the command room when a product taken out from the storage shelf is transferred to the collection conveyor. It has been.

JP 08-258922 A JP 2007-220352 A

By the way, with respect to the picking display applied to the above-described picking management system, improvement of the following functions is desired in consideration of the product cost, the usability of the worker, and the like. That is,
(1) In addition to low power consumption and long life, the display has a wide field of view that can be accurately seen even by workers at positions where the lighting of the display installed in each section of the work area is remote. Is desired.

That is, the commodity storage shelf (see FIG. 20B) installed in the picking system generally has a structure in which a number of shelf sections are arranged in the upper and lower stages, and the picking operation is performed standing near the front of the storage shelf. The worker looks up at a steep eye angle for the picking indicators installed on the shelves at a position higher than the eye level or at a position below the feet, or looks down at the lighting state of the indicator visually. It will be. For this reason, for example, as in the edge-light type illuminated display lamp having a conventional structure disclosed in Patent Document 2, if the outer peripheral edges of the four sides of the light guide plate are surrounded by the outer frame of the frame-shaped case, In the display installed in the shelf section lined up on the upper and lower shelves, the case frame covering the periphery of the light guide plate becomes an obstacle to view, making it difficult to see the illumination surface of the light guide plate. The display installed in the shelf section has a problem that it is difficult to visually recognize the illumination state of the light guide plate.
(2) In addition, since the conventional edge light type illumination display lamp described above surrounds the four sides of the light guide plate with the outer frame of the frame-shaped case, the size of the light guide plate is different from that of the model display lamp. Therefore, it is necessary to design and manufacture a dedicated case for each model, making it difficult to share parts. Therefore, in order to reduce the product cost, it is desired to develop a structure that can share the parts of different models with different light guide plate sizes.
(3) In addition, since the edge light type illumination display lamp only illuminates the light guide plate and does not have a digital display function such as picking quantity, the conventional picking system has a digital type separately from the illumination display lamp. A numeric display is also added. However, if a digital numeric display is installed separately from the picking display, the equipment cost becomes high. Therefore, the appearance of an inexpensive illumination type (edge light type) picking display having a quantity display function is desired. .

  The present invention has been made in view of the above points, and its first object is to improve the visibility so that the illumination state of the light guide plate can be easily confirmed even at an installation position deviated from the eye level of the operator. A second object is to provide an illuminated display device having a multi-display function in which the illuminated display device is provided with a picking quantity and a display function.

In order to achieve the first object, according to the present invention, a rectangular light guide plate having an illumination surface as a front surface and an edge end surface of an upper side or a lower side, and a plurality of LEDs (light emission) as an illumination light source of the light guide plate The LED module is mounted in an array on the circuit board and arranged opposite to the edge of the side edge of the light guide plate, and the LED module and the periphery of the light guide plate excluding the illumination surface are surrounded to hold the light guide plate. The light-shielding case is configured as an assembly (claim 1). Specifically, the light-shielding case can be configured in the following manner.
(1) The case is constituted by a case having a concave frame structure that surrounds the three peripheral edges of the left and right sides and the lower side of the light guide plate and holds the light guide plate.
(2) The case is constituted by a unit case having a divided structure that is assembled to both right and left ends of the light guide plate and surrounds a side edge portion of the light guide plate.
(3) In the preceding item (2), a stay or box-type base is installed on the lower side of the light guide plate over the left and right divided unit cases (claim 4).
(4) LEDs having different emission colors are mounted in combination on the LED module so that the LED selected by the command emits single color or mixed color.
(5) An edge end face inclined forward is formed on the upper side of the light guide plate.
(6) A power source battery for the LED module is built in the case (Claim 7).
(7) A magnet is provided on the outer surface of the case to attract and hold the device on the metal installation surface of the user (product storage shelf).
(8) A translucent waterproof protective cover is provided inside the case so as to cover the front side of the LED module.
(9) A cable feeding mechanism for adjusting the length of the cable connected to the LED module and pulled out from the case is provided inside the bottom of the case.

In order to achieve the second object, according to the present invention, in addition to the structure of the first claim, the light guide plate is divided into a plurality of divided light guide plates arranged vertically or horizontally. The LED modules are arranged opposite to the edge surfaces of the side edges corresponding to each of the divided light guide plates (Claim 11), and the following additional requirements are applied to the divided light guide plates. In addition, configure.
(1) With respect to each of the divided light guide plates, the LED module is disposed so as to face only the edge end surface on one side, and the reflection mirror is disposed between the edge end surface on the other end side and the adjacent divided light guide plates. (Claim 12).
(2) A reflecting mirror is also disposed on the edge surface of the lower edge of each of the divided light guide plates.

  According to the present invention, in addition to the structure of claim 1, as a means for providing a multi-display function to the illuminated display device, the front surface of the case that surrounds the periphery of the light guide plate and holds the light guide plate A plurality of display windows with lenses are arranged side by side, and light emitting elements such as LEDs that are turned on in response to external control signals are arranged inside the case corresponding to each display window. 14).

  In addition, the lens arranged in the display window of the previous item is a smoke lens in which the lighting state of the light emitting element arranged behind it is visible from the front of the lens.

  According to the illuminated display device of the present invention configured as described above, the following effects can be obtained.

  First, according to the configuration of claim 1, wherein the front surface of the light guide plate and the edge end surface of the upper side or the lower side are used as an illumination surface, and the illumination surface is exposed to the outside of the case, the display device has a height higher than the human eye level. Even in the environment of the work site installed above or below, the illumination state of the light guide plate can be accurately visually recognized without the field of view being obstructed by the case. In addition, the upper or lower edge end surface of the light guide plate has a smaller illumination area than the front surface, and the edge end surface of the upper or lower side is illuminated with high brightness by adding the edge lighting effect of light incident from the LED. Become. Thereby, the visibility of the picking display applied to the above-described picking management system can be greatly improved as compared with the conventional structure.

Moreover, in addition to the said effect, the following effect is acquired by the structure of Claims 2-10 of this invention.
(1) The case is constituted by a case having a concave frame structure in which the upper side is opened and the outer periphery of the light guide plate is covered (Claim 2), whereby the front side and the upper side of the light guide plate are formed. In addition to exposing the outer edge of the case to the outside of the case and surrounding the remaining three sides, the light guide plate can be held inside the case, and the space inside the lower side of the case can be utilized to guide it The power supply, signal cable, etc. connected to the LED modules arranged on the left and right sides of the light plate can be routed inside the case.
(2) On the other hand, the case is constructed by a unit case having a left and right split structure in which the case is assembled to the left and right ends of the light guide plate so as to surround the side edge of the light guide plate. Divided unit cases can be handled as common parts even for light guide plates of various sizes, which can reduce product costs including design and parts management.
(3) Further, in the configuration of the preceding item (2), a left or right divided unit case is formed by laying a stay or box-type base on the lower side of the light guide plate across the left and right unit cases (claim 4). Is integrated with the base and the light guide plate sandwiched therebetween can be stably held, and the battery for power supply of the LED module can be accommodated by making use of the inner space of the base. It is possible to easily cope with the provision of a cable feeding mechanism (Claim 10) that adjusts the length of the cable that is connected to the cable and pulled out from the case.
(4) Also, by forming an edge end surface inclined forward on the upper side of the light guide plate (Claim 6), the edge end surface of the light guide plate that shines with high brightness is easily visible from the front, and the visibility is further improved. improves.
(5) In addition, by incorporating a battery for LED power supply in the case (claim 7), it can be used in a place where there is no power supply facility. Further, by providing an attracting magnet on the outer surface of the case (Claim 8), the installation position of the display device can be easily moved and changed as required. Furthermore, by providing a translucent waterproof protective cover that covers the front side of the LED module inside the case (claim 9), it can be used safely even in an environment where the picking equipment is washed with water.

On the other hand, according to the configurations of claims 11 to 15 of the present invention, it is possible to display information such as the picking quantity in an illuminated manner by adding a multi-display function to the illuminated display device applied to the picking system as described below. it can. That is,
(1) The light guide plate is divided into a plurality of divided light guide plates arranged side by side or vertically, and the LED modules are arranged opposite to the edge end surfaces of the side edges corresponding to each of the divided light guide plates. ) Here, by selectively lighting or blinking control of each divided light guide plate according to the picking quantity command, the picking worker can determine the work classification of the product storage shelf specified from the illumination state of the light guide plate of the display unit. In addition to the display, the quantity of products taken out from the shelf section can also be visually confirmed. As a result, it is not necessary to install a digital number display for displaying the picking quantity as in the prior art, and the equipment cost can be reduced.
(2) In addition, with respect to each of the divided light guide plates, the LED module is disposed so as to face only the edge end surface on one side, and a reflection mirror is provided between the edge end surface on the other end side and the adjacent divided light guide plate. By arranging (Claim 12), it is possible to cope with the use of only one set of LED modules for one divided light guide plate, and between the light guide plates by a reflection mirror interposed between the divided light guide plates. Unnecessary illumination interference can be prevented.
(3) By arranging a reflection mirror on the lower edge surface of each of the divided light guide plates, the light guide plate reflects light incident from the LED module toward the lower edge surface of the light guide plate by the mirror. The illumination surface can be illuminated efficiently.

  In addition, for the case of this illuminated display device, a plurality of display windows with lenses are provided on the front side of the case side by side, and control signals from the outside are provided inside the case corresponding to each display window. A light emitting element (for example, LED) to be received and lit is disposed (claim 14), and the light emitting element disposed in the display window is controlled to be lit according to the picking quantity. Without preparing a numerical display of the formula separately, it is possible to display information on the picking quantity by adding a multi-display function similar to the above.

  In addition, the lens disposed in the display window of the preceding paragraph is a smoke lens in which the lighting state of the light emitting element disposed behind the lens is visible from the front of the lens. The distinction is easy to identify.

BRIEF DESCRIPTION OF THE DRAWINGS It is a block diagram of the illuminated display apparatus concerning Example 1 of this invention, (a) is a perspective view of an assembly state, (b) is an exploded perspective view of (a). It is a supplementary explanatory drawing of Drawing 1, and (a), (b), and (c) are a front view, a back view, and a top view, respectively. FIG. 3 is a detailed structural diagram of a main part in FIG. 1, and (a), (b), and (c) are enlarged sectional views taken along arrows AA, BB, and CC shown in FIG. 2, respectively. It is a block diagram of the LED module shown in FIG.1 (b), (a), (b) is the external appearance perspective view seen from the table | surface and the back, respectively. It is a circuit diagram of a LED module, (a), (b) is a circuit diagram at the time of combining two types and three types of light emission color LED, respectively. It is a block diagram of the illumination display apparatus concerning Example 2 of this invention, (a) is a perspective view of an assembly state, (b) is an exploded perspective view of (a). FIG. 7 is a supplementary explanatory diagram of FIG. 6, (a) and (b) are a front view and a bottom view of FIG. 6 (a), and (c) and (c) are arrows shown in (a) and (b). It is an expanded sectional view of AA and BB. It is explanatory drawing of the installation method of the illumination display apparatus of FIG. It is a block diagram of the illumination display apparatus concerning Example 3 of this invention, (a), (b) is the perspective view of an assembly state, respectively, and the perspective view of the state before attaching a light-guide plate. FIG. 10 is an exploded perspective view of FIG. 9. It is a supplementary explanatory drawing of Drawing 9, (a) and (b) are a front view and a bottom view, and (c) is an expanded sectional view of arrow AA expressed in (a). It is a block diagram of the illumination display apparatus concerning Example 4 of this invention, (a) is an external appearance perspective view, (b) is an expanded sectional view of arrow AA represented to (a). It is a block diagram of the illumination display apparatus concerning Example 5 of this invention, (a), (b) is the perspective view seen from the upper direction and the bottom face, respectively. It is a block diagram of the illumination display apparatus concerning Example 6 of this invention, (a) is the whole apparatus perspective view seen from the back side, (b) is an enlarged view of the arrow P section of (a), (c). (A) is an enlarged cross-sectional view taken along the line AA shown in (a), and (d) is an exploded perspective view of the main part mechanism. It is a block diagram of the illumination display apparatus concerning Example 7 of this invention, (a) is a perspective view of an assembly state, (b) is an exploded perspective view of (a). It is a block diagram of the illumination display apparatus concerning Example 8 of this invention, (a) is a perspective view of an assembly state, (b) is an exploded perspective view of (a). It is a block diagram of the illumination display apparatus concerning Example 9 of this invention, (a) is a perspective view of an assembly state, (b) is an exploded perspective view of (a). It is a block diagram of the illumination display apparatus concerning Example 10 of this invention, (a) is a perspective view of an assembly state, (b) is an exploded perspective view of (a). It is a block diagram of the illumination display apparatus concerning Example 11 of this invention, (a) is a perspective view of an assembly state, (b) is an exploded perspective view of (a). It is a structure and arrangement | positioning figure of the conventional picking display used for the picking management system, (a) is an external perspective view of a picking display, (b) is an external perspective view of the state which installed the picking display in the goods storage shelf It is.

  DESCRIPTION OF THE PREFERRED EMBODIMENTS Embodiments of the illuminated display device according to the present invention will be described below based on the embodiments shown in FIGS.

  First, as a first embodiment, the construction of an illuminated display device corresponding to claims 1, 2, 5 and 9 of the present invention is shown in FIGS.

  The illuminated display device according to this embodiment includes a rectangular light guide plate 10, an LED module 20 disposed as opposed to the left and right side edges of the light guide plate as an illumination light source of the light guide plate 10, and a case 30 that holds the light guide plate 10. It is comprised with the assembly. Reference numeral 41 denotes a power supply and signal cable connected to the LED module 20 and pulled out from the case 10; 42, a cable connector; 43, a waterproof protective cover that is built into the case 30 and covers the front surface of the LED module 20; It is.

  Here, the light guide plate 10 is made by dispersing and blending light diffusing fine particles in a transparent resin base material such as an acrylic resin, for example. The front surface 11 and the edge end surface 12 of the upper side are illuminated surfaces, right and left sides. The LED module 20 faces the left and right edge end surfaces 13 and 14 with the edge end surfaces 13 and 14 of the sides as the incident surfaces of the LED light source.

  Further, as shown in FIGS. 4A and 4B, the LED module 20 has a plurality of (six in the illustrated example) LEDs 22 arranged in an array on the circuit board 21, and on the back side of the board. Circuit components such as a resistance element 23 that limits the energization current, a Zener diode 24, and a protective diode 25 that increases the reverse withstand voltage of the LED 22 are mounted. The LED 22 mounted on the circuit board 21 has, for example, two green light emitting diodes of “green” and “orange” arranged alternately, or light emission of “red”, “green”, and “blue” (three primary colors of light). The diodes are combined and alternately arranged, and circuits corresponding to these are shown in FIGS. 5 (a) and 5 (b).

  On the other hand, the case (opaque mold resin molded product) 30 shown in FIG. 1 has a split structure of a front frame 31 and a back cover 32 having a concave outer shape with the upper side open, and the front frame 31 and the back cover 32. The outer peripheral edge portions of the three sides excluding the illumination surface (front surface 11 and upper edge end surface 12) of the light guide plate 10 are supported by being overlapped, and are assembled by fastening with screws 35 with packings 33 and 34 interposed therebetween. In the assembled state of the case 30, components such as the LED module 20 arranged on the left and right of the light guide plate 10, the cable 41, and the waterproof protection plate 43 arranged on the front surface of the LED module 20 are stored. The side edge and the bottom edge are surrounded to shield light from the outside.

  With the above configuration, when the cable connector 42 is connected to a power source and the LED 22 of the LED module 20 is turned on, the light emitted from the LED 22 is incident from the left and right edge end surfaces 13 and 14 of the light guide plate 10 and then the light diffusing fine particles. Thus, the direction of the optical path is changed to emit light outward from the front surface 11 and the edge end surface 12 on the upper side to illuminate the illumination surface of the light guide plate 10. In this case, the edge end surface 12 on the upper side particularly shines with higher brightness than the front surface 11 due to the edge lighting effect. Note that characters or the like may be engraved on the front surface 11 of the light guide plate 10 for illumination and display.

  As a result, when the illumination display device is applied to the above-described picking management system and placed in each shelf section of the product storage shelf (see FIG. 13B), it is at a position lower than the eye height. However, the upper edge end surface 12 that shines with high brightness is not obstructed by the frame of the case 30, and the worker can surely observe the lighting state of the light guide plate 10 from the height of the line of sight while standing.

  In this case, it is possible to illuminate the light guide plate 10 in a single color or an arbitrary color by selectively turning on the LEDs 22 of the respective emission colors or controlling the light amounts of the three primary color emission LEDs. Is possible. Further, the light guide plate 10 may be roughened like a satin-like back surface to form a diffuse reflection surface, and the incident light from the LED 20 may be reflected toward the illumination surface.

  In the illustrated example, two sets of LED modules 20 are arranged on both the left and right sides of the light guide plate 10 so as to enter the light emission of the LEDs 22 from the left and right, but the LED modules 20 are arranged opposite to the left and right edge end surfaces. However, it is also possible to use a mirror surface treatment on the edge surface on the other side or attach a reflection sheet.

  Next, as a second embodiment, the construction of an illuminated display device corresponding to claim 3 of the present invention is shown in FIGS.

  The difference between this embodiment and the first embodiment is that the case for holding the light guide plate 10 is divided into left and right divided unit cases 36L and 36R, and the LED module 20 is built in each divided unit. The unit cases 36L and 36R are assembled by being joined to the left and right edges of the light guide plate 10, respectively. In this assembled state, the left and right edge end surfaces 13 and 14 of the light guide plate 10 are surrounded by the divided unit cases 36L and 36R. The light is shielded from the outside.

  Here, the divided unit cases 36L and 36R are box-shaped molded resin molded products whose one end face is opened in accordance with the thickness and height of the light guide plate 10, and the LED module 20 and the waterproof protective cover 43 are contained therein. The cable 41 connected to the LED module 20 is drawn out to the lower surface side of each divided unit case. Further, in the split unit cases 36L and 36R, screw holes 36a penetrating in the front-rear direction and right and left side edges of the light guide plate 10 inserted from above as shown by arrows in FIG. A protruding rib 36b is formed. Reference numeral 37 denotes a fixing screw for fastening the LED module 20 to the divided unit case.

  In order to attach the above-mentioned illumination display device to the installation surface of the user (for example, the product storage shelf of the picking equipment (see FIG. 15B)), the divided unit cases 36L and 36R are assembled to the left and right ends of the light guide plate 10. Then, as shown in FIG. 8, screws are fastened to the front surface of the shelf frame of the storage shelf 3 through the mounting screws 44 in the screw holes 36a of the divided unit cases 36L and 36R. In this installed state, when the cable 41 is connected to the power source and the LED 22 of the LED module 20 is turned on, the front surface of the light guide plate 1 and the edge end surfaces of the upper and lower sides are illuminated.

  Further, in the configuration of this embodiment, the left and right unit cases 36L and 36R can be used as common parts, so that the light guide plates 10 having different left and right length sizes can be handled without any problem, thereby reducing the product cost. .

  Next, as a first embodiment, an application example of the above-described second embodiment will be described with reference to FIGS.

  In this embodiment, a stay 38 (base member) is installed on the bottom side of the light guide plate 10 so as to straddle between the divided unit cases 36L and 36R assembled to the left and right ends of the light guide plate 10 in the second embodiment. Thus, the light guide plate 10 sandwiched between the left and right divided units is stably held.

  That is, the stay 38 has the packing 38a overlapped on the upper surfaces of the left and right end portions, and is fixed to the bottom surfaces of the divided unit cases 36L and 36R by the fastening screws 38b. Further, a screw hole 38c is drilled in the bottom surface of the stay 38, and if necessary, the stay 38 is used as a support member and placed on the installation place of the display device, for example, the shelf frame of the storage shelf in FIG. Thus, the display device can be installed in a standing posture. Needless to say, the screw holes 36a of the divided unit cases 36L and 36R can be screwed to the front of the shelf frame at the installation location (see FIG. 8).

  Next, as a fourth embodiment, a structure corresponding to claim 6 of the present invention is shown in FIG. In this embodiment, the light guide plate 10 held by the case 30 having the concave frame structure employed in the first embodiment described above is inclined with the upper edge surface obliquely cut toward the front surface 11 and inclined forward. The end surface 12a is formed.

  By forming the inclined edge end surface 12a inclined forward on the upper side that becomes the illumination surface of the light guide plate 10 in this way, the illumination surface of the upper side that shines with high brightness by the edge lighting effect can be easily seen from the front, and thus the visibility is further improved. improves.

  Needless to say, the light guide plate 10 having the inclined edge end face 12a formed on the upper side can be used in combination with the divided unit cases 36L and 36R employed in the second and third embodiments.

  Next, as a fifth embodiment, a configuration corresponding to claims 7 and 8 of the present invention is shown in FIG. This embodiment is based on the structure of the second embodiment described above, and is additionally equipped with a box-type base 39 on the bottom side of the light guide plate 10 across the left and right divided unit cases 36L and 36R. The battery base 45 for the LED module 20 is built in the mold base 39. In addition, 46 is an ON / OFF switch of a power supply circuit, 39a is an opening / closing cover of a battery accommodating part.

  With this configuration, it can be easily applied to a picking facility that does not have an LED power source (DC power source) using the display device, and convenience is improved.

  In the illustrated embodiment, a sheet-like attracting magnet 47 is attached to the bottom surface of the box-type base 39, and the attracting magnet 47 can be used to attach to the metal surface at the installation location.

  Next, as a sixth embodiment, a construction corresponding to claim 10 of the present invention is shown in FIG.

  In this embodiment, for the case 30 having the concave frame structure of the first embodiment, a cable feeding mechanism 40 is built in the bottom side of the case 30 and connected to the LED module 20 (see FIG. 1B). The cable 41 pulled out from the case 30 can be variably adjusted according to the size of the product storage shelf and the situation of the picking work site. The cable feeding mechanism 40 is as follows. It is configured.

  That is, the back cover 32 of the case 30 is provided with an adjustment guide hole (long hole in the left-right direction) 32a at the bottom, and a wavy notch groove 32b is formed along the upper edge of the adjustment guide hole 32a. ing. Further, a piece-shaped adjustment pin 48 is inserted into the adjustment guide hole 32a in combination with an engagement spring (inverted V-shaped leaf spring) 49 pressed against the notch groove 32b so as to be slidable left and right. The knob end face 48a is exposed to the outside of the case. Further, a cable latch pin 32c is provided at a side position of the adjustment guide hole 32a.

  On the other hand, the cable 41 connected to the LED module built in the case 30 and routed inwardly at the bottom of the case 30 is routed between the adjustment pin 48 and the latch pin 32c, as shown in FIG. As shown, the wires are wired in a folded state.

  With the above configuration, the adjustment pin 48 is moved left and right by manual operation, so that the cable 41 that is stretched over the adjustment pin 48 and pulled out from the case 30 has a pull-out length according to the movement position of the adjustment pin 48. Expansion and contraction can be adjusted.

  That is, when the adjustment pin 48 is moved to the right in FIG. 14C, the cable 41 is slackened, and the cable 41 can be pulled rightward by this slack. On the other hand, when the adjustment pin 48 is moved to the left while the cable 41 is being laid on the adjustment pin 48, the cable 41 is pulled by the adjustment pin 48 and pulled out, and the length of the cable 41 pulled out is shortened.

  Thereby, the convenience which can respond easily, for example, when changing the attachment position of the said display apparatus installed in picking equipment (commodity storage shelf) and used is acquired.

  Next, the configuration of an embodiment according to claim 11 of the present invention as embodiment 7 is shown in FIGS.

  In this embodiment, the light guide plate 10 is divided into a plurality of (two in the illustrated example) divided light guide plates 10a and 10b arranged vertically, based on the configuration of the illumination display device shown in the first embodiment. Above, LED modules 20 in which LEDs 22 are vertically arranged so as to individually correspond to the divided light guide plates 10a and 10b are incorporated in the left and right ends of the case 30 holding the light guide plate. The module circuit is assembled so that the divided light guide plates 10a and 10b and the LEDs 22 corresponding individually can be energized separately.

  In addition, reflection mirrors 44 are provided between the divided light guide plates 10a and 10b arranged in the upper and lower stages, and on the lower side edge end surfaces of the divided light guide plates 10 arranged in the lower stage. The reflection mirror 44 prevents illumination interference between the divided light guide plates 10a and 10b, and returns light radiated downward from the lower divided light guide plate 10b to the illumination surface area of the light guide plate and enters the light guide plate from the LED 22 It plays a role in increasing the efficiency of using light.

  In this way, by dividing the light guide plate 10 into a plurality of pieces and individually controlling the illumination of each of the divided light guide plates 10a and 10b, a multi-display function capable of simultaneously displaying picking quantity information in addition to the picking area is added. be able to.

  For example, when the picking quantity is one, the divided light guide plates 10a and 10b are synchronously lit continuously or flashing simultaneously, and when the picking quantity is two, the divided light guide plates 10a and 10b are alternately turned on. By blinking, the picking area information can be transmitted to the operator together with the picking area display. When there are three or more picking quantities, the light guide plate 10 may be divided into three or more pieces in advance, and lighting control of each divided light guide plate may be performed in accordance with the picking quantity.

  Next, as an eighth embodiment according to claim 12 of the present invention, FIGS. 16A and 16B show a simplified embodiment in which a part of the structure of the seventh embodiment is changed.

  In this embodiment, with respect to the divided light guide plates 10a and 10b divided into the upper and lower stages, the LED module 20 is disposed opposite to only one edge end surface (right edge end surface in the illustrated example), and the other edge end surface is disposed on the other edge end surface. The reflection mirror 44 is installed without providing the LED module. As a result, the light incident from the LED 22 through the one side edge end face of the light guide plates 10a and 10b is reflected by the reflection mirror 44 at the opposite edge end face and returns to the illumination surface area to illuminate the divided light guide plates 10a and 10b. Thus, the first embodiment in which two sets of LED modules are provided as an illumination display device applicable to a model in which the lateral width of the light guide plate 10 is a short size can be dealt with by arranging only one set of LED modules 20. Can be manufactured at a lower cost.

  Next, as an illuminated display device according to claim 11 of the present invention, Embodiment 9 in which the divided light guide plate is changed to an arrangement different from Embodiments 7 and 8 is shown in FIGS.

  That is, in the above-described Examples 7 and 8, the light guide plates 10 are divided into upper and lower rows, but in this embodiment, the light guide plates supported by the concave case 30 are divided into divided light guide plates 10a and 10b arranged in the left and right directions. Above, LED module 20 is arrange | positioned in the right-and-left both ends of case 30 corresponding to each division | segmentation light-guide plate 10a, 10b separately, Furthermore, between the division | segmentation light-guide plates 10a and 10b, and the lower edge of each division | segmentation light-guide plate The reflection mirror 44 is laid on the end surface. In addition, partition frames 31a and 32a are formed at the center of the front frame 31 and the back cover 32 of the case 30 so as to cover a joint portion between the divided light guide plates 10a and 10b arranged side by side.

  The illumination display method for picking information according to this embodiment is the same as the method described in the previous embodiment 7, and selectively controls lighting and blinking of the divided light guide plates 10a and 10b arranged on the left and right according to the picking quantity. Thus, the picking area information can be displayed together with the picking area display to notify the operator. In the illustrated embodiment, the light guide plate is divided into two divided light guide plates 10a and 10b and arranged on the left and right. However, in order to correspond to the picking quantity of three or more, the number of divisions of the light guide plate is three. Based on the above, each divided light guide plate and the corresponding LED module may be arranged.

  Next, FIGS. 18A and 18B show the structure of a tenth embodiment according to claim 12 of the present invention. This embodiment is based on the configuration of the first embodiment, and a plurality of (four in the illustrated example) lens-equipped display windows 30a are provided side by side on the front surface of the case 30 holding the light guide plate 10, and each display window is provided. Corresponding to 30a individually, the case 30 has a multi-display configuration in which light emitting elements that are turned on in response to an external control signal are arranged.

  That is, a plurality of display windows (small windows) 31a are arranged in a row on the left side of the front frame 31 of the concave case 30, and the light guide plate 10 is provided inside the case 30 corresponding to the display windows 31a. A dedicated LED module 45 is arranged separately from the corresponding LED module 20. This LED module 45 has a configuration in which the LED 47 corresponding to the display window 31a and the limiting resistor 48 are mounted on a horizontally long long board 46, and the power cable 41 is connected in the same manner as the LED module 20 of the light guide plate 10. Via a higher order command circuit.

  A smoke lens having a color similar to the color of the cover 30 is fitted in the display window 31a.

  With the above configuration, when the operator is instructed about the picking area of the storage shelf from which the product is taken out, the LED 22 of the LED module 20 is turned on in the same manner as in the first embodiment, and the front surface and the upper edge edge of the light guide plate 10 At the same time, the LED 46 of the LED module 45 is selectively lit or blinked in accordance with the picking quantity information. For example, when the picking quantity is “1”, one LED 47 is lit, and when there are a plurality of picking quantities, a plurality of LEDs are simultaneously lit to open the case 30. The display window with lens 30a is illuminated. Thereby, the operator can visually recognize the picking quantity by looking at the illumination state of the display window 30a.

  By using a smoke lens of the same color as the case 30 as the lens of the display window 30a, only the display window lit by the LED 47 is brightly illuminated, and the other illumination windows have the same opaque color as the case 30 on the lens surface. Therefore, the operator can accurately identify the picking quantity.

  Next, as an application example of the tenth embodiment, a simplified eleventh embodiment is shown in FIGS. 19 (a) and 19 (b). This embodiment is suitable as an illumination display device applied to a model in which the width of the light guide plate 10 is short. As an LED module corresponding to the light guide plate 10, the edge end surface on one side of the light guide plate 10 is the same as in the eighth embodiment. The LED module 20 is disposed so as to oppose only on the right edge end face in the illustrated example, and the reflection mirror 44 is provided on the other edge end face without providing the LED module. The assembly structure including the lens-equipped display window 30a opened in the case 30 and the LED module 45 corresponding to the display window 30a is the same as that of the tenth embodiment (see FIG. 18).

  With this configuration, it is only necessary to use one set of LED modules 20 to illuminate the light guide plate 10, which can be manufactured at a lower cost than in the tenth embodiment.

  In each of the embodiments described above, the picking indicator lamp applied to the picking management system has been described as an implementation target. However, the use of the illumination display device is not limited to this, and the man machine for another use is used. -It can also be applied as an indicator light for the interface.

10 Light Guide Plate 11 Front (Lighting Surface)
12 Top edge edge surface (lighting surface)
12a Inclined edge end face 13, 14 Edge end face on the left right side (LED light incident face)
20 LED module (for light guide plate)
21 Circuit board 22 LED
30 Case 31a Display window with lens 31 Concave front frame 32 Back frame 36, 37 Split unit case 38 Stay 39 Box-type base 41 Cable 40 Cable feeding mechanism 43 LED module waterproof protective cover 44 Reflective mirror 45 LED module (lens (With display window)
46 LED (light emitting element)

Claims (15)

  A rectangular light guide plate having an illumination surface on the front surface and an edge end surface of the upper side or the lower side, and a plurality of LEDs (light emitting diodes) as an illumination light source of the light guide plate mounted in an array on the side of the light guide plate The LED module is configured to be opposed to the edge end surface, and the LED module and a light-shielding case that holds the light guide plate so as to surround the periphery of the light guide plate excluding the illumination surface. Illuminated display device.   The illuminated display device according to claim 1, wherein the case is configured by a case having a concave frame structure surrounding three peripheral edges of the left and right sides and the lower side of the light guide plate.   2. The illuminated display device according to claim 1, wherein the case is composed of left and right divided unit cases that are assembled to the left and right ends of the light guide plate and surround side edges of the light guide plate.   4. The illuminated display device according to claim 3, wherein a stay or a box-type base is installed on the lower side of the light guide plate across the left and right divided unit cases.   2. The illuminated display device according to claim 1, wherein LEDs having different emission colors are mounted in combination on the LED module so that the LEDs selected by the command emit light in a single color or mixed colors.   2. The illuminated display device according to claim 1, wherein an edge end surface inclined forward is formed on an upper side of the light guide plate.   2. The illuminated display device according to claim 1, wherein a battery for a power source of the LED module is built in the case.   The illuminated display device according to claim 1, wherein a magnet for attracting and holding the display device on a metal installation surface of a use destination is provided on an outer surface of the case.   2. The illuminated display device according to claim 1, further comprising a translucent waterproof protective cover provided inside the case so as to cover a front side of the LED module.   3. The illuminated display device according to claim 2, wherein a cable feeding mechanism is provided inside the bottom of the case for adjusting a length of a cable connected to the LED module and drawn from the case.   2. The illuminated display device according to claim 1, wherein the light guide plate is divided into a plurality of divided light guide plates arranged vertically and horizontally, and each edge of the side edge corresponding to each of the divided light guide plates is provided. An illuminated display device, wherein the LED module is disposed opposite to the LED module.   12. The illumination type display device according to claim 11, wherein the LED module is disposed opposite to each divided light guide plate only on the edge end surface on one side thereof, and the edge end surface on the other end side and the adjacent divided light guide plates between each other. An illumination type display device, characterized in that a reflecting mirror is disposed on the surface.   The illuminated display device according to claim 11 or 12, wherein a reflection mirror is disposed on an end surface of a lower edge of each divided light guide plate.   2. The illumination type display device according to claim 1, wherein a plurality of display windows with lenses are provided side by side on the front surface of the case that surrounds the periphery of the light guide plate and holds the light guide plate, and individually corresponds to each display window. A light-emitting display device characterized in that a light-emitting element that is turned on in response to an external control signal is disposed inside the case.   15. The illuminated display device according to claim 14, wherein the lens of the display window is a smoke lens in which a lighting state of a light emitting element disposed behind the display window is visible from the front of the lens.

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