JP2008180990A - Internally illuminated sign - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an internally illuminated sign that is improved in illumination irregularity and can be obtained in a simple configuration although the sign is large. <P>SOLUTION: A large sign can be obtained by using a plurality of illumination devices 1. As an illuminant 11 of the illumination device 1 is disposed so that its optical axis L1 is nearly parallel to a display section 2, the light L2 from the illuminant is appropriately diffused to reach the display section 2, as well as light L3 also reaches the display section 2 close to between the plurality of illumination devices 1 to reduce illumination irregularity. Since use of a light guide plate or the like is unnecessary, the internally illuminated sign can be obtained in a simple configuration. <P>COPYRIGHT: (C)2008,JPO&INPIT

Description

  The present invention relates to an internally illuminated sign provided with a light emitting device behind a translucent display portion.

  In an internally illuminated sign provided with a light emitting device behind a translucent display part, for obtaining a large internally illuminated sign, for example, a plurality of edge light type light guide plates by the applicant of the present invention are planarized. An internally-illuminated display device arranged and formed, wherein a light guide plate is integrally formed on a front surface of a plurality of light guide plates so as to cover the front surface and spaced apart from the light guide plate A plate type display device is disclosed (for example, Patent Document 1).

JP 2004-240073 A

  However, with the conventional internally illuminated sign as described in the cited document 1, it is possible to obtain a large internally illuminated sign while improving the illumination unevenness, but the configuration is troublesome because it is necessary to use a light guide plate. It was a thing.

  The present invention has been made in view of the problems as described above, and is intended to provide an internally illuminated sign that can be obtained with a simple structure while being large in size while improving illumination unevenness.

  In order to achieve the above object, the present invention is configured as follows. That is, the internally illuminated sign according to the present invention is an internally illuminated sign in which a plurality of illumination devices are provided behind a translucent display unit, and light from the illumination device is transmitted through the display unit. The lighting device is formed such that the optical axis of the light emitter is provided substantially parallel to the display portion, and a space is provided between a boundary portion between the plurality of lighting devices and the display portion. It is what.

  According to the internally illuminated sign according to the present invention, a large-sized sign can be obtained by using a plurality of illumination devices, and the light emitter of the illumination device is provided with the display unit and the optical axis substantially parallel to each other. As a result, the light from the light emitter is appropriately diffused and reaches the display unit, and the light also reaches the display unit in the vicinity of the plurality of lighting devices to reduce uneven illumination. Therefore, it is possible to obtain such an internally illuminated sign with a simple configuration.

  The light emitter is a light emitting diode, and a plurality of the light emitting diodes are provided adjacent to each other to form a light emitter group, and at least two light emitter groups are provided to face each other in the direction of emitted light. If it is, it can illuminate the display part of the vicinity of the light-emitting body group which each opposes, and also can reduce illumination nonuniformity, and is preferable.

  The light-emitting diode is preferably a chip-type light-emitting diode, because it is not necessary to use a member or the like, and it can lead to moderate light diffusion and reduce uneven illumination.

  Further, the lighting device is formed by attaching a light emitter to the inside of a framed frame body, and if the frame bodies between a plurality of lighting devices can be connected to each other, a plurality of frames connected by the frame body are provided. It is preferable because the strength of the lighting device can be increased.

  Further, if the frame body is inclined so that at least the upper and lower surfaces of the light emitting body on which the display unit is provided are inclined to form an acute angle with the display unit, the display unit near the plurality of illumination devices It is preferable that the ratio of light to be shielded to be reduced and illumination unevenness can be further reduced.

  According to the internally illuminated sign according to the present invention, a large-sized sign can be obtained by using a plurality of illumination devices, and the light emitter of the illumination device is provided with the display unit and the optical axis substantially parallel to each other. As a result, the light from the light emitter is appropriately diffused and reaches the display unit, and the light also reaches the display unit in the vicinity of the plurality of lighting devices to reduce uneven illumination. Therefore, it is possible to obtain such an internally illuminated sign with a simple configuration.

  BEST MODE FOR CARRYING OUT THE INVENTION The best embodiment according to the present invention will be specifically described below with reference to the drawings.

  FIG. 1 is a longitudinal sectional view showing an embodiment of an internally illuminated sign according to the present invention. The internally illuminated sign 10 is formed by providing the lighting device 1 behind the translucent display unit 2, and information drawn on the display unit 2 is transmitted through the light emitted from the lighting device 1. Is displayed. The illuminating device 1 is provided with a light-emitting body 11 which is a chip-type light-emitting diode attached to an inner side of a frame body 12 made of an extruded aluminum material formed in a frame, and an optical axis of the light-emitting body 11. L1 is configured to be substantially parallel to the display unit 2. Further, the light emitting bodies 11A and 11B are provided on the opposing frame bodies 12A and 12B so that the light emitting directions are opposed to each other. The side of the lighting device 1 opposite to the side where the display unit 2 is provided is blocked by a light diffusing plate 13, and the light diffusing plate 13 and the frame bodies 12A and 12B have a color tone that at least the inside approximates white, The light emitted from the light emitters 11A and 11B is used for illumination without waste.

  A plurality of lighting devices 1 are arranged side by side, and each is connected by connecting means 4 that screws the plate 41 passed between the lighting devices 1 with screws 42, but the boundary portion between adjacent lighting devices 1 is Since it becomes the frame body 12, it can be considered that it causes uneven illumination. Here, a gap K is provided between the illumination device 1 and the display unit 2, and the light axis L 1 of the light emitter 11 is substantially parallel to the display unit 2, whereby light emitted from the light emitter 11. The display section 2 is illuminated by the diffused light L2 and the display section 2 near the frame body 1A is illuminated by the light L3 from the light emitter 11B provided on the opposite frame body 12B. Thus, the occurrence of illumination unevenness at the boundary portion between adjacent lighting devices 1 is remarkably reduced. Further, since it is not necessary to use a light guide plate, the number of light emitting diodes used can be reduced, and the lighting device 1 can be made lightweight.

  The interval K is preferably set such that the frame body 12B does not become a shadow of the display unit 2 due to light from the light emitter 11A. The distance K increases as the distance between the frame body 12B and the light emitter 11A increases. However, if it is too large, the luminance of light emission may be lowered, and about 10 to 100 mm is preferable.

  FIG. 2 is a longitudinal sectional view showing an example of a modification of the frame body 12 of the lighting device 1 shown in FIG. The frame body 12 is also made of an extruded aluminum material, and has an inclined surface 121 in which the upper and lower sides provided with the light emitter 11 and the side provided with the display unit 2 are inclined so as to form an acute angle with the display unit 2. Has been made. The inclined surface 121 makes it easy for the light L3 to reach the display unit 2, and the light L4 that hits the frame body 12A is reflected to the display unit 2 side by the inclined surface 121, thereby further displaying the display unit near the frame body 12A. Illumination unevenness can be reduced by illuminating 2 brightly.

  FIG. 3 is a longitudinal sectional view showing an example of a modification of the internally illuminated sign shown in FIG. Display units 2A and 2B are provided on both the front and back sides of the lighting device 1, and both front and back surfaces of the lighting device 1 are open so that light emitted from the light emitters 11A and 11B can illuminate both the front and back sides. Thus, both the display units 2A and 2B can be internally illuminated. The upper and lower surfaces of the frame body 12 on which the light emitter 11 is provided are inclined surfaces 121A and 121B that are inclined at an acute angle with the display portions 2A and 2B. In contrast, the illumination unevenness is equally reduced. With this configuration, it is possible to achieve internal illumination by the lighting device 1 with a simple configuration even when the display portion is provided on one side, and with respect to those provided on both sides.

  FIG. 4 is an explanatory diagram showing an example of a method for forming the internally illuminated sign 10 using the lighting device 1. The illuminating device 1 is formed by framing frame bodies 12 </ b> A and 12 </ b> B that constitute a left and right vertical frame and provided with a light emitter 11, and a frame body 12 </ b> C that constitutes an upper and lower horizontal frame. The light emitting diodes are attached to the frame bodies 12A and 12B at substantially equal intervals, so that the light emitter group 110 is formed inside the frame bodies 12A and 12B. Adjacent lighting devices 1A and 1B can be connected to each other by bolting adjacent frames 12, and by connecting a plurality of lighting devices 1, the display unit 2 having a desired size can be internally illuminated. . The connecting means 4 between the illuminating devices 1 is not limited to screwing, but can be connected by bolting or using another member, or the frame body 12 can be fitted with male and female slidable connecting grooves. You can also connect them together.

  Such illuminating devices 1A and 1B are housed in a sign frame body 3 whose front and back surfaces are similarly opened. The sign frame 3 is made thicker than the lighting device 1 so that a space is provided between the display unit 2 provided on the front and back of the sign frame 3 and the housed lighting device 1. ing. Although the lighting device 1 can be protected by providing the sign frame 3, a spacer or the like is provided between the lighting device 1 and the display unit 2 without providing the sign frame 3 to provide a space. May be. Further, even if any one of the lighting devices 1 breaks down, it can be quickly repaired by replacing the entire lighting device 1, or it may be possible to remove and repair only the failed lighting device 1 and use it again. .

It is a longitudinal cross-sectional view which shows one Embodiment of the internally illuminated sign concerning this invention. It is a longitudinal cross-sectional view which shows an example of a deformation | transformation of the illuminating device shown in FIG. It is a longitudinal cross-sectional view which shows an example of a deformation | transformation of the internally illuminated sign shown in FIG. It is explanatory drawing which shows an example of the formation method of the internally illuminated sign concerning this invention.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Illuminating device 11 Light emitter 110 Light emitter group 12 Frame body 121 Inclined surface 2 Display unit 10 Internal illumination type sign K interval

Claims (5)

A plurality of illuminating devices are provided behind a translucent display unit, and an internally illuminated sign is formed so that light from the illuminating device is transmitted through the display unit. The illuminating device has an optical axis of a light emitter. An internally illuminated sign characterized in that the sign is formed substantially parallel to the display unit, and a space is provided between a boundary portion between the plurality of lighting devices and the display unit. The light-emitting body is a light-emitting diode, and a plurality of light-emitting diodes are provided adjacent to each other to form a light-emitting body group, and at least two light-emitting body groups are provided to face each other in the direction of emitted light. The internally illuminated sign according to claim 1, wherein: 3. The internally illuminated sign according to claim 1, wherein the light emitting diode is a chip type light emitting diode. The lighting device is formed by attaching a light emitter to an inner side of a framed frame body, and the frame bodies between a plurality of lighting devices can be connected to each other. An internally illuminated sign according to any of the above. 5. The inner surface according to claim 4, wherein the frame body is inclined so that at least the upper and lower surfaces of the light emitter are provided with a display portion at an acute angle with the display portion. Illuminated sign.

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