JP6069726B2 - Display device - Google Patents

Description

  The present invention relates to a display device such as a lighting advertisement signboard.

  Conventionally, a display device generally called a channel character used as a lighting advertisement signboard has a bottom surface on the back side of a milky white light diffusing resin plate 90 cut into a shape of a character or the like to be displayed as shown in FIGS. A groove (channel) constituted by 92 and the side plate 91 is provided, and a light source 93 is appropriately installed on the bottom surface 92 of the groove so as to face the light diffusion resin plate 90 side, and the light source transmits the light diffusion resin plate 90. It had a visual effect that characters and the like appeared to be raised by the transmitted light.

  However, in such a display device, in order to make the luminance of the light diffusion resin plate 90 uniform, it is necessary to increase the height of the side plate 91 and diffuse the emitted light from the light source 93.

  Therefore, for example, when the character width (width of the light diffusion resin plate 90) is about 40 mm, the side plate 91 needs to have a height of about 80 mm, so that it is very difficult to reduce the size and thickness.

  Therefore, as a display device that achieves uniform brightness while reducing the thickness of the display device, a plurality of LED lamps are arranged on a flexible substrate so that the emitted light of each LDE lamp is emitted to both surfaces of the flexible substrate. An LED module (hereinafter referred to as a flexible LED module) that is mounted and can be bent into a roll shape so as to form a flat display surface in which each LDE lamp is located on the same plane is used, and this LED module is used as an embedded portion. A display device that reflects the bottom plate by disposing the LED lamp at a certain distance from the bottom plate is disclosed (see Patent Document 1).

JP 2012-38635 A

  However, in this display device, in order to make the luminance uniform, it is necessary to fix the plurality of LED lamps with the optical axis facing the bottom plate while maintaining a certain distance from the bottom plate that is the reflecting plate. Since it is necessary to use a flexible LED module, there is a concern about an increase in cost.

  In addition, since this flexible LED module needs to be inserted along an embedding part that forms a continuous or intermittent strip-shaped strip having a constant width, in order to arrange the LEDs at appropriate positions in order to make the luminance uniform. In addition, it is necessary to form the embedded portion based on precise calculation, and it is costly to process the embedded portion on the bottom plate, and the degree of freedom of arrangement of the LED lamp is not easily ensured. It was.

  Therefore, the present invention solves such problems, while adopting a simple structure, easily ensuring the degree of freedom of the arrangement of the LED light source, aiming at uniform brightness of the display unit, It is an object of the present invention to provide a display device that can be reduced in size, thickness, and cost.

  In order to solve the above problems, a display device according to the present invention is a display device surrounded by at least a light diffusing unit forming a bottom portion, a display unit forming a top surface, and a sidewall. According to a position display unit provided at an appropriate position of the diffusing unit, at least one of an LED light source or a support structure including the LED light source is disposed, and the light emitting unit of the LED light source contacts the light diffusing unit Alternatively, by inserting the light emitting unit of the LED light source into the light diffusing unit with the light emitting unit facing downward, the light diffusing unit diffuses the light of the LED light source and illuminates at least the display unit Is.

  Further, the light diffusion part can be formed of a light diffusion resin.

  Moreover, the said position display part can be made into the marking, the dent, or groove | channel provided in the light-diffusion part.

  Moreover, the said dent can be used as the insertion part which inserts a LED light source.

  Furthermore, a plurality of the LED light sources can be connected at a predetermined interval by a flexible connecting portion.

  According to the display device of the present invention, while adopting a simple structure, the degree of freedom of arrangement of the LED light source is easily secured, the luminance of the display unit is made uniform, and the display device is reduced in size and thickness. Cost can be reduced.

FIG. 3 is a partially enlarged perspective view of a light diffusion portion of the display device according to the first embodiment of the present invention. It is a partially expanded perspective view of the light-diffusion part using the support structure provided with LED light source different from FIG. 1 of the display apparatus which concerns on 1st Embodiment of this invention. It is a perspective view which shows the Example of a support structure provided with an LED light source. It is a perspective view of the display apparatus which concerns on 2nd Embodiment of this invention. It is a center longitudinal cross-sectional view of FIG. It is a front view of the state which abbreviate | omitted the display part and side wall in the case of using the display apparatus of this invention for a channel character. FIG. 7 is a cross-sectional view taken along line AA in a state where the display unit and the side wall of FIG. 6 are not omitted. It is a perspective view of the conventional display apparatus. It is explanatory drawing which shows the internal structure of FIG.

  Hereinafter, embodiments according to the present invention will be described with reference to the drawings. However, the present invention is not limited to the embodiments.

  The display device of the present invention is a display device surrounded by at least a light diffusing unit 10 constituting the bottom, a display unit 20 constituting a top plate, and a side wall 30. At least one of the LED light source L or the support structure S provided with the LED light source L is arranged according to the position display unit 11 provided at the position, and the light emitting unit L1 of the LED light source L is arranged as the light diffusion unit 10. Or by inserting the light emitting portion L1 of the LED light source L into the light diffusing portion 10 with the light emitting portion L1 side facing downward, the light diffusing portion 10 diffuses the light of the LED light source L. Thus, at least the display unit 20 is illuminated. In addition, let the display part 20 side which comprises the top plate of a display apparatus be upper, and let the light-diffusion part 10 side which comprises a bottom part be the downward direction.

  FIG. 1 is a partially enlarged perspective view illustrating a state in which an LED light source L is arranged in a light diffusing unit 10 of a display device according to a first embodiment of the present invention (a display unit 20 constituting a top plate, and Side wall 30, electric wire S5, etc. are omitted.) The light emitting unit L1 of the LED light source L is in contact with the light diffusing unit 10 so that the light diffusing unit 10 diffuses the light of the LED light source L and illuminates at least the display unit 20. And the light emission part L1 of the LED light source L is arrange | positioned according to the position display part 11 provided in the light-diffusion part 10 at least any one of the support structure S provided with the LED light source L or the LED light source L. Arranged at an appropriate position.

  The light diffusing unit 10 constitutes the bottom of the display device, and diffuses the light emitted from the light emitting unit L1 of the LED light source L. The light diffusing unit 10 is provided with a plurality of position display units 11 indicating the arrangement positions of the LED light sources L or the support structures S including the LED light sources L at appropriate positions. The light diffusion unit 10 is formed of a material that diffuses light. Specifically, for example, a light diffusing resin or a light diffusing glass such as a semi-milk color can be used, but it is preferable to use a light diffusing resin in view of processing, cost, and the like.

  The position display unit 11 considers the intensity of the light source, the direction of the optical axis, the shape of the display device, the material, and the like of the LED light source L to be used, so that the brightness of the display unit 20 is uniform. An appropriate arrangement position of the support structure S including the light source L is displayed. The position display unit 11 arranges at least one of the LED light source L or the support structure S including the LED light source L on the position display unit 11, thereby causing the light emitting unit L <b> 1 of the LED light source L to be in the light diffusing unit 10. This means that it can be arranged at an appropriate position. That is, by indicating the arrangement position of the LED light source L itself, the light emitting portion L1 of the LED light source L is naturally arranged at an appropriate position, and the support structure S including the LED light source L (a connecting portion S1, which will be described later). The light emitting part L1 of the LED light source L may be arranged at an appropriate position by indicating the arrangement position of the light source support S2, the support part S3, the fixing member S4, the electric wire S5, the tubular member, etc.

  The position display unit 11 is, for example, marked with a laser at a suitable position of the light diffusing unit 10 where the support structure S such as the LED light source L and the support unit S3 is arranged, or processed such as a dent and a groove. is there.

  The LED light source L is supported by various support structures S. The support structure S is a support member that supports the LED light source L itself, a support member that connects the plurality of LED light sources L, and a support member that supports the connection member.

  A plurality of LED light sources L shown in FIG. 1 are coupled by a flexible energizable coupling portion S1 in a state where the light emitting portion L1 of the LED light source L can contact the light diffusing unit 10.

  The LED light source L used in the present embodiment is a so-called side view type LED light source L. However, the LED light source L itself shields light diffused by the light source or the light diffusion unit 10 or displays the display unit 20. Various LED light sources L can be used as long as they are LED light sources L that do not cast shadows. It should be noted that if the light diffused by the light source or the light diffusing unit 10 is not shielded or the shadow on the display unit 20 is not reflected, the light should be blocked or shadowed to the extent that the luminance of the display unit 20 is not disturbed. It is a good idea.

  The connecting part S1 connects a plurality of LED light sources L at a predetermined interval. The connecting portion S1 has flexibility, and thus the light emitting portion L1 of the connected LED light source L can be freely arranged at an appropriate position.

  Specifically, as shown in FIG. 1, the connecting portion S1 has a thin strip shape, and has a convex shape for attaching the LED light source L to one end side in the longitudinal direction of the connecting portion S1 with a certain interval. A light source support S2 is projected. Necessary electronic circuits and the like (not shown) are mounted on the connecting portion S1 and the light source support S2 to constitute a flexible substrate.

  A support portion S3 is provided between the light source supports S2. Similarly to the light source support S2, the support part S3 protrudes in a convex shape at a certain interval on one end side in the longitudinal direction of the connection part S1.

  Further, as shown in FIG. 2, the LED light source L is attached to one end side in the longitudinal direction of the thin strip-shaped connecting portion S1 with an appropriate interval, and the connecting portion S1 and the light source support S2 are integrated. The supporting structure S may be used. In the case of the structure of the support structure S, instead of the support portion S3 described above, for example, the connection portion S1 is sandwiched by a U-shaped thin plate fixing member S4 provided with a notch S41 that sandwiches the connection portion S1. The fixing member S4 may be fixed by an appropriate fixing means such as an adhesive to support the LED light source L. Further, the end portion of the connecting portion S1 can be fixed along the groove provided in the light diffusion portion 10.

  Moreover, as shown in FIG. 3 (FIG. 3 shows only the connected state of the LED light source L, and other configurations are omitted), the connecting portion S1 can also be formed by the electric wire S5. That is, the light source support S2 on which the LED light source L and necessary electronic circuits are mounted is connected by the electric wire S5. Furthermore, the LED light source L (not shown) connected with tube-shaped members, such as a vinyl chloride and a silicon | silicone, which has transparency or translucency can also be used.

  In any case, the support structure S that supports the LED light source L, such as the connecting portion S1, the light source support S2, the support portion S3, the fixing member S4, the electric wire S5, and the tube-shaped member described above, is the luminance of the display unit 20. In order to make uniform, similarly to the LED light source L described above, the support structure itself shields the light emitted from the LED light source L or the light diffused by the light diffusing unit 10 or casts a shadow on the display unit 20. Any structure may be used as long as it has no structure. It should be noted that the light emitted from the LED light source L or the light diffused by the light diffusing unit 10 is not blocked or shadows are not reflected on the display unit 20 to the extent that the luminance of the display unit 20 is not hindered. It is a good idea if no shading or shadow is reflected on the screen.

  In the display device shown in FIG. 1, the position display unit 11 indicates the arrangement position of the support unit S <b> 3, thereby arranging the light emitting unit L <b> 1 of the LED light source L in contact with an appropriate position of the light diffusion unit 10. Specifically, a concave position display unit 11 is provided in the light diffusing unit 10 and the support unit S3 is inserted into the position display unit 11 so that the support unit S3 is fixed and the light emitting unit of the LED light source L is provided. L1 is disposed in contact with an appropriate position of the light diffusing unit 10.

  As for the board | substrate provided with the LED light source L used for this display apparatus, as shown in FIG. 1, the connection part S1 which connects several LED light sources L is thin strip | belt shape, for example. A convex light source support S2 protrudes from one end side of the connecting portion S1 in the longitudinal direction with a certain interval, and the light emitting portion of the LED light source L is projected at the protruding convex end. It is attached so that L1 is located. And the flexible board | substrate with which convex-shaped support part S3 is protrudingly provided between the light source support bodies S2 is used.

In the display device illustrated in FIG. 2, the position display unit 11 indicates any one of the LED light source L, the connecting unit S <b> 1, the fixing member S <b> 4, or two or more of these arrangement positions, whereby the LED light source L emits light. The portion L1 is disposed in contact with an appropriate position of the light diffusion portion 10. Specifically, the light diffusing unit 10 is marked with a laser or the like indicating an appropriate arrangement position of each member. And according to the marking, each member is arrange | positioned and it fixes with suitable fixing materials, such as an adhesive agent, and the light emission part L1 of LED light source L is contact | abutted and arrange | positioned at the appropriate position of the light-diffusion part 10. FIG. (Marking not shown.)
The substrate provided with the LED light source L used in the display device is preferably a flexible substrate having a configuration in which the light source support S2 and the connecting portion S1 are integrated. For example, as shown in FIG. 2, the flexible board | substrate attached so that the light emission part L1 of several LED light source L may be located in the one end side of the longitudinal direction of thin strip | belt-shaped connection part S1 through a fixed space | interval. It is. In this substrate, a U-shaped thin plate fixing member S4 having a notch S41 that holds the connecting portion S1 is sandwiched between the connecting portions S1, and the fixing member S4 is fixed by an appropriate fixing means such as an adhesive or an adhesive tape. Can be fixed.

  In any case, when any one of the LED light source L or the support structure S is disposed at an appropriate position in accordance with the position display unit 11 provided at an appropriate position of the light diffusing unit 10, light emission of the LED light source L is achieved. That is, it is only necessary that the portion L1 can come into contact with an appropriate position of the light diffusion portion 10.

  The display unit 20 constitutes the top surface of the display device, is illuminated by the light of the LED light source L diffused by the light diffusion unit 10, and is formed in a shape to be illuminated. For example, it is formed with a milk semi-acrylic resin or the like.

  The side wall 30 surrounds the periphery of a display device including the light diffusing unit 10 that forms the bottom and the display unit 20 that forms the top surface. Similarly to the display unit 20, the LED light source L diffused by the light diffusing unit 10 can be illuminated, or the illumination unit can be configured not to illuminate.

  When it is set as the structure which illuminates the side wall 30, it is formed, for example by milk semi-acrylic resin. In the case where the side wall 30 is not illuminated, an appropriate material such as resin, metal, or wood is used, and the surface is designed according to the design of the display device as necessary in order to prevent light from leaking to the outside. The shading coating 40 is applied.

  As described above, according to the display device according to the present invention described above, at least one of the LED light source L and the support structure S including the LED light source L according to the position display unit 11 provided at an appropriate position of the light diffusion unit 10. By arranging one, the light emitting part L1 of the LED light source L is arranged in contact with an appropriate position of the light diffusing part 10, and the entire light diffusing part 10 is used as a light source free from spots on the display unit 20 or the like. Can do. In addition, the height of the side wall 30 can be reduced as compared with a conventional display device in which a plurality of LED lamps are fixed with the optical axis facing the bottom while maintaining a certain distance from the bottom plate, which is a reflector. it can.

  Therefore, while adopting a simple structure, the degree of freedom of arrangement of the LED light source L can be easily secured, the luminance of the display unit 20 can be made uniform, and the display device can be reduced in size, thickness, and cost can be reduced. It becomes.

  4 is a perspective view of a display device according to a second embodiment of the present invention, and FIG. 5 is a central longitudinal sectional view of FIG. This display device is basically the same as the display device of the first embodiment except for the following points.

  A display device surrounded by at least a light diffusing unit 10 constituting a bottom, a display unit 20 constituting a top plate, and a side wall 30, and a position display provided at an appropriate position of the light diffusing unit 10 According to the part 11, at least one of the LED light source L or the support structure S provided with the LED light source L is arranged, and the light emitting part L1 of the LED light source L is placed on the light diffusing part 10 with the light emitting part L1 side downward. The light diffusing unit 10 diffuses the light from the LED light source L and inserts the light toward the display unit 20 at least.

  Here, the insertion of the light diffusing unit 10 with the light emitting unit L1 facing downward means that the light emitting surface, which is the light emitting unit L1 of the LED light source L, is inserted with the light diffusing unit 10 constituting the bottom facing each other. is there. Most preferably, the light emitting surface and the surface of the light diffusing unit 10 are inserted in a substantially parallel state. However, the light emitting surface and the light diffusing unit 10 include those that are inserted obliquely downward within a range where the display unit 20 is uniformly illuminated.

  The position display unit 11 of this display device is formed from an insertion unit 12 for inserting a plurality of LED light sources L provided at appropriate positions of the light diffusion unit 10. And by inserting at least a part of the LED light source L into the insertion part 12, the light emitting part L1 of the LED light source L is inserted and arranged at an appropriate position of the light diffusion part 10, and the light diffusion part 10 is an LED. The light emitted from the light source L is diffused, and the entire light diffusing unit 10 can be used as a light source free from spots on the display unit 20 or the like.

  The shape of the insertion part 12 should just be a shape which can insert at least one part of light source support S2 provided with LED light source L or LED light source L, and can insert the light emission part L1 of LED light source L. FIG.

  As shown in FIGS. 4 and 5, the shape of the insertion portion 12 is such that the LED light source L or the light source support provided with the LED light source L is fitted into the light source support S 2 provided with the LED light source L. A concave shape to which S2 is fixed is preferable. Specifically, the depth of the insertion portion 12 is substantially the same as the length in the short direction of the LED light source L or the light support provided with the LED light source L, and the width of the insertion portion 12 is the LED light source L or the LED light source. By configuring the light source support S2 having L substantially the same as the length in the longitudinal direction, the LED light source L or the light source support S2 including the LED light source L is fitted and fixed to the insertion portion 12. And it is more preferable if it is set as the structure which the light emission part L1 of the LED light source L contact | abuts to the bottom part of the insertion part 12 made concave shape.

  The insertion portion 12 may be configured by a continuous concave groove shape, but can recognize a predetermined position where the LED light source L is arranged and can fix the LED light source L at the predetermined position. It is preferable that

  Further, since the LED light source L inserted into the insertion portion 12 provided in the light diffusing portion 10 emits light, the LED light source L emits light inside the light diffusing portion 10. A more uniform light emitter is obtained.

  In the display device of FIG. 4, a display unit 20 and a side wall 30 constituting a substantially rectangular top plate are integrally formed in a light diffusion unit 10 formed in a substantially rectangular parallelepiped box having an upper opening and a thin height. In this configuration, the display unit 20 and the side wall 30 having a substantially frustum shape are placed. The surface side of the four sides of the light diffusing portion 10 formed in the box is coated for light shielding, and at an appropriate position on the bottom of the light diffusing portion 10 formed in the box, By inserting the LED light source L with the light emitting portion L1 facing downward, the light diffusing portion 10 diffuses the light of the LED light source L, the entire light diffusing portion 10 is used as the light source, and the substantially frustum-shaped display portion 20 The display device illuminates the side wall 30.

  At the bottom of the light diffusing unit 10 formed in the box, a certain distance is provided in the horizontal direction (the short direction of the light diffusing unit 10 in FIG. 4 is the horizontal direction and the long direction is the vertical direction). A plurality of insertion portions 12 are provided, and a plurality of similar insertion portions 12 are formed in the vertical direction.

  As shown in FIG. 4, the substrate provided with the LED light source L used in this display device has a light source support S2 projecting at a predetermined interval on one end side in the longitudinal direction of the thin strip-shaped connecting portion S1. It is preferable to use a flexible substrate that is provided and has the LED light source L attached to the light source support S2. The LED light source L is attached to the light source support S2 so that the light emitting portion L1 of the LED light source L faces downward when inserted into the insertion portion 12.

  Then, as shown in FIGS. 4 and 5, the light source support S <b> 2 to which the LED light source L is attached is fitted into the insertion portion 12, thereby arranging and fixing the light emitting portion L <b> 1 of the LED light source L at an appropriate position. .

  As described above, according to the display device according to the present invention described above, the LED light source L itself is arranged according to the position display unit 11 provided at an appropriate position of the light diffusion unit 10, so that the support structure including the LED light source L is provided. By arranging S according to the position display unit 11, the light emitting part L1 of the LED light source L can be arranged at an appropriate position more easily and accurately than when the light emitting part L1 of the LED light source L is arranged at an appropriate position. . Further, the height of the side wall 30 can be further reduced by at least the amount of the LED light source L inserted into the insertion portion 12 of the light diffusion portion 10 as compared with the case where the light emitting portion L1 of the LED light source L is in contact with the light diffusion portion 10. Further, the display device can be made smaller and thinner.

  6 and 7 show an example of an embodiment in which the display device of the present invention is used as a three-dimensional character advertising billboard device called a so-called channel character in the field of light decoration. FIG. 6 is a front view of the letter A with the channel character display 20 and the side wall 30 omitted. FIG. 7 is a cross-sectional view taken along the line AA in a state where the display unit 20 and the side wall 30 of FIG. 6 are not omitted.

  The display device shown in FIGS. 6 and 7 has a position display unit 11 (insertion unit) that indicates the arrangement position of the LED light source L in the light diffusing unit 10 so that the luminance of the display unit 20 formed in alphabetic characters is uniform. 12) is provided.

  The basic configuration is the same as in the second embodiment. Note that the same configuration as that of the first embodiment may be employed.

  This display device is a trapezoidal cross-sectional display device as shown in FIG. A display unit 20 formed in the shape of a character or the like to be displayed and a light diffusion unit 10 having a shape corresponding to the display unit 20 are provided in parallel. The width of the light diffusing unit 10 is slightly shorter than the width of the display unit 20, and is surrounded by side walls 30 having a substantially wedge shape in cross section provided from the lower surfaces of both ends of the display unit 20. A pedestal 50 is provided at the bottom of the light diffusion portion 10 and the side wall 30. In order to prevent light from leaking to the outside, a light shielding coating 40 corresponding to the design is applied to the side surface of the display device.

  The shape of the display device can be appropriately changed as long as the luminance of the display unit 20 is uniform. For example, the cross-sectional shape can be various shapes such as a rectangular shape.

  As described above, according to the display device according to the present invention described above, the light emitting portion L1 of the LED light source L can be easily arranged at an appropriate position, and the display portion is formed in a complicated character, figure, symbol, or the like. The luminance of 20 can be easily made uniform, and the display device can be reduced in size, thickness, and cost. The display unit 20 illuminated by the display device having the above-described configuration is displayed on characters or the like without borders, but may be configured to display on characters or the like with borders.

  The present invention is not limited to the configuration of the above-described embodiment, and can be implemented by appropriately changing the shape, dimensions, material, fixing material, and the like. For example, a configuration in which a portion where the light emitting portion L1 of the LED light source L is brought into contact with the light diffusing portion 10 and a portion where the light emitting portion L1 of the LED light source L is inserted into the light diffusing portion 10 may be mixed.

  The display device may be a display device surrounded by at least the light diffusing unit 10 constituting a part of the bottom, the display unit 20 constituting a part of the top plate, and the side wall 30. There is no need for the entire display section 20 or the entire bottom section to be the light diffusion section 10, and display devices having various structures are included. Furthermore, it is needless to say that a part of the configuration can be omitted and a part of the configuration can be extracted.

L LED light source L1 Light emission part 10 Light diffusion part 11 Position display part 12 Insertion part 20 Display part 30 Side wall S Support structure S1 Connection part S2 Light source support S3 Support part S4 Fixing member S5 Electric wire S41 Notch part 40 Shading coating 50 Base 90 Light diffusion resin plate 91 Side plate 92 Bottom surface 93 Light source

Claims (3)

At least a display device that is surrounded by a light diffusing portion that forms a bottom portion and is formed of a light diffusing resin, a display portion that forms a top surface, and a side wall,
A side view type that is provided at an appropriate position of the light diffusing unit, and is connected by a connecting unit at a predetermined interval according to a concave position display unit formed from the top surface side toward the bottom side . At least an LED light source ,
By contacting the light emitting part of the LED light source with the bottom part of the position display part, or inserting it toward the bottom part of the position display part ,
The display device in which the light diffusing unit diffuses light of an LED light source to illuminate at least the display unit. The light diffusing portion is formed in a box having an upper opening, and a space for accommodating the connecting portion is formed between an upper surface of the light diffusing portion on which the position display portion is formed and a lower surface of the display portion. The display device according to claim 1. The display device according to claim 1, wherein a depth of the position display unit is substantially equal to a height of the LED light source.

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