JP2015075631A - Illumination lamp for signboard and signboard illumination device using the same - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination lamp for a signboard that can reduce a protrusion amount from the signboard and efficiently illuminate a whole of the signboard.SOLUTION: An illumination lamp 1 for a signboard comprises at least one illumination unit 10 including an LED (a light source) 2, a bar-like rod lens 3 extending along an optical axis of the LED 2, a transparent cover 4 covering the rod lens 3 from outside, and a reflector 5 attached to a front end of the transparent cover 4. Light emitted from the LED 2 of the illumination unit 10 and guided in the rod lens 3 is reflected at a predetermined angle in an opposite direction to the emission by an emission surface 3b of an end of the rod lens 3 or by the emission surface 3b and the reflector 5 to illuminate a predetermined range R centering the rod lens 3 of a signboard 50.

Description

  The present invention relates to a signboard illumination lamp for illuminating a signboard and a signboard illumination apparatus using the same.

  Illumination devices for illuminating a signboard displaying various information at night and the like include an internal illumination type that illuminates from inside the signboard and an external illumination type that illuminates from outside the signboard. And in an external lighting type | formula signboard illumination device, the support | pillar type (for example, refer patent document 1) shown to FIG. 5 (a), (b), and the projection type type (for example, refer patent document 2) shown in FIG. There is.

  That is, FIG. 5A is a front view of a column type signboard illumination device, FIG. 5B is a side view of the signboard illumination device, and the illustrated signboard illumination device is a rectangular flat plate erected vertically. The pillars 151 are erected on the upper left and right of the sign 150, and the illumination lamps 101 are attached to the pillars 151, respectively. In such a column-type signboard illumination device, when each illumination lamp 101 is turned on at night or the like, light from these illumination lamps 101 is irradiated obliquely from above to the surface of the signboard 150 and displayed on the surface of the signboard 150. Information such as the designs and characters that have been made is visible even at night.

  FIG. 6 is a side view of a projection type signboard illuminating device. In the illustrated signboard illuminating device, an illuminating lamp 201 is installed at a position away from a vertically erected signboard 250, and illuminates at night. By projecting the light from the lamp 201 onto the surface of the signboard 250, information such as patterns and characters displayed on the surface of the signboard 250 can be seen at night.

JP 2011-082066 A Japanese Patent Application Laid-Open No. 08-227604

  However, in the column-type signboard illumination device shown in FIG. 5, in order to illuminate the entire signboard 150, it is necessary to make the illumination lamp 101 protrude largely forward from the surface of the signboard 150. In some cases, the amount of protrusion of the lamp 101 cannot be secured sufficiently. It should be noted that the amount of the lamp 101 protruding from the sign 150 is regulated by regulations.

  Further, in the projection type signboard illuminating device shown in FIG. 6, in order to illuminate the entire signboard 250, it is necessary to set an installation distance according to the diffusion angle of the illuminating lamp 201, which requires a large site area. There's a problem.

  The present invention has been made in view of the above problems, and a purpose of the present invention is a signboard illumination lamp capable of efficiently illuminating the entire signboard while suppressing the amount of protrusion from the signboard, and a signboard provided with the same The object is to provide a lighting device.

  To achieve the above object, a signboard illumination lamp according to claim 1, a light source, a rod-shaped rod lens extending along the optical axis of the light source, a transparent cover for covering the rod lens from the outside, and the transparent cover At least one illumination unit including a reflector attached to the front end of the light source, and the light emitted from the light source of the illumination unit and guided through the rod lens is emitted from the exit surface of the rod lens Alternatively, it is configured to illuminate a predetermined area centered on the rod lens of the signboard by being reflected at a predetermined angle in the direction opposite to the output direction by the output surface and the reflecting plate.

  According to a second aspect of the present invention, in the first aspect of the present invention, the rod lens is formed of a round bar-shaped light guide, and the exit surface and the reflective surface of the reflecting plate are conical concave curved surfaces. Features.

  The invention according to claim 3 is characterized in that, in the invention according to claim 1 or 2, the surface of the reflecting plate is a flat surface, and information corresponding to the surface of the signboard is displayed on the surface. To do.

  According to a fourth aspect of the invention, in the third aspect of the invention, another illumination unit for illuminating the surface of the reflector is attached to the surface of the reflector.

  The signboard illumination device according to claim 5 is formed with a plurality of holes in the signboard, and the signboard illumination lamp according to any one of claims 1 to 4 is passed through the holes from the back side of the signboard and fixed to the signboard. It is characterized by comprising.

  According to the first and second aspects of the present invention, the light emitted from the light source such as the LED of the illumination unit and guided in the rod lens is emitted from the light exit surface or the light exit surface at the tip of the rod lens and the reflection plate. Reflecting at a predetermined angle toward the signboard in the opposite direction to illuminate a predetermined area centered on the rod lens of the signboard, so that the entire signboard can be efficiently illuminated without having to project the rod lens greatly from the signboard can do.

  Further, since the signboard illumination lamp is not greatly exposed on the surface of the signboard, the design of the signboard is not harmed by the lighting unit.

  Furthermore, since direct-view light from the light source cannot be seen from the front of the signboard, direct-view glare is reduced, and the sign viewer is not dazzled.

  According to the invention of claim 3, since the surface of the reflector is a flat surface, information such as a picture or characters corresponding to the surface missing from the signboard due to the presence of the signboard illumination lamp is displayed on the surface. The missing portion of the display is eliminated, and the original function of the sign is not impaired by the sign lamp.

  According to the fourth aspect of the present invention, the information displayed on the surface of the reflecting plate (information for supplementing the missing portion of the signboard) can be illuminated by another illumination unit, and the entire signboard can be illuminated brightly. .

  According to invention of Claim 5, while being able to illuminate the signboard whole efficiently with several signboard illumination lights, each signage lamp can be easily attached using the hole formed in the signboard. it can.

It is a front view of the signboard illumination device according to the present invention. It is the sectional view on the AA line of FIG. It is a plane sectional view of the sign lamp for Embodiment 1 according to the present invention. It is a plane sectional view of the signboard illuminating lamp according to Embodiment 2 of the present invention. (A) is a front view of a conventional sign type illumination device of a support type, and (b) is a side view of the signboard illumination device. It is a side view of the projection type conventional signboard illumination device.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
[Signboard lighting equipment]
FIG. 1 is a front view of a signboard illuminating device according to the present invention, FIG. 2 is a cross-sectional view taken along line AA in FIG. 1, and the signboard illuminating device according to the present invention A total of nine signboard illuminating lamps 1 are installed in a matrix at 50 at a suitable interval. Note that information (not shown) such as patterns and characters is displayed on the surface of the signboard 50 (the surface on the near side in FIG. 1).

Although details of the configuration of each signboard lamp 1 will be described later, when the signboard lamp 1 is turned on at night or the like, the light emitted from each signboard lamp 1 is, as shown in FIG. The surface R is irradiated toward an elliptical region R centering on each signboard illumination lamp 1 to illuminate the region R. Therefore, the entire area of the surface of the signboard 50 is illuminated by the light emitted from the nine signboard illumination lamps 1 and the information displayed on the surface is clearly visible even at night.
[Signboard lighting]
Next, an embodiment of the signboard illumination lamp 1 according to the present invention will be described.

<Embodiment 1>
FIG. 3 is a cross-sectional plan view of the signboard illumination lamp according to Embodiment 1 of the present invention. The illustrated signboard illumination lamp 1 includes an LED (light emitting diode) 2 as a light source and an optical axis of the LED2. And a rod-shaped rod lens 3 extending in a rounded manner, a bottomed cylindrical transparent cover 4 covering the periphery of the rod lens 3 from the outside, and a reflector 5 attached to the front end of the transparent cover 4. The lighting unit 10 is provided.

  The LED 2 is mounted at the center of the disc-like substrate 6, and a hemispherical concave incident surface 3 a is formed at the center of the surface of the rod lens 3 facing the LED 2 (lower end surface in FIG. 3). Has been. A heat sink 7 is attached to the surface of the substrate 6 opposite to the LED 2 (the lower surface in FIG. 3) with a plurality of screws 8. Here, the heat sink 7 is integrally formed of an aluminum alloy or the like having a high thermal conductivity. The heat sink 7 has a disk-like base member 7a and a plurality of thin plate-like heat radiates integrally with the base member 7a. It is comprised with the fin 7b.

  The rod lens 3 is made of a transparent light guide such as polycarbonate resin, and the exit surface 3b at the end surface (upper end portion in FIG. 3) of the rod lens 3 has a conical concave curved surface. An annular flange portion 3c is integrally formed at the end portion (lower end portion in FIG. 3) of the rod lens 3 on the incident surface 3a side.

  The transparent cover 4 is integrally formed in a bottomed cylindrical shape with a transparent resin such as polycarbonate resin, and an annular flange portion 4a is integrally formed at the opening side end portion (lower end portion in FIG. 3). Yes. In addition, a block-like pedestal 4b that covers the emission surface 3b of the rod lens 3 is integrally formed at the front end of the transparent cover 4 (upper end in FIG. 3). A conical convex surface is formed so as to be in close contact with the outgoing surface 3b, and the outer surface is formed in a truncated cone shape.

  The reflecting plate 5 is attached to the pedestal 4b formed at the tip of the transparent cover 4, the surface (outer surface) is a flat surface 5a, and the inner surface is from the center to the signboard 50 side (downward in FIG. 3). A tapered reflecting surface 5b that opens in a truncated cone shape is formed.

  Thus, the signboard illumination lamp 1 in which the heat sink 7 is attached to the illumination unit 10 as described above is assembled and attached to the signboard 50 as described below.

  That is. The signboard 50 has a circular hole 50a. When attaching the sign lamp 1 to the sign 50, first, the transparent cover 4 covering the rod lens 3 and its periphery is passed through the through hole 50a of the sign 50 from the back side, and the flange 4a of the transparent cover 4 is attached. A state in which the substrate 6 and the heat sink 7 overlapped with the plate 51 and integrated by the screws 8 sandwich the flange portion 3c of the rod lens 3 and the seal ring 11 such as an O-ring between the flange portion 4a of the transparent cover 4. Thus, the rod lens 3 and the transparent cover 4 are attached to the attachment plate 51 by a plurality of screws 12. An annular mounting plate 51 is attached by a plurality of screws 9 around the through hole 50 a on the back surface of the signboard 50.

  A reflecting plate 5 is attached to a base 4b formed at the tip of the transparent cover 4 protruding to the front side of the signboard 50. In this way, each signboard illumination lamp 1 is easily attached from the back side of the signboard 50 using the through holes 50 a formed in the signboard 50. In the state in which the sign lamp 1 is attached to the sign 50 as shown in FIG. 3, the rod lens 3, a part of the transparent cover 4 and the reflector 5 protrude from the surface of the sign 50, and the back side of the sign 50 The heat sink 7 protrudes.

  By the way, since the through hole 50a for attaching the sign lamp 1 is formed in the signboard 50, information such as a pattern and characters displayed on the surface of the signboard 50 is lost in the through hole 50a. For this reason, in this Embodiment, the information of the signboard 50 missing for the through-hole 50a is displayed on the surface (plane) 5a of the reflecting plate 5 of the signboard lamp 1.

  In each of the signboard lighting lamps 1 attached to the signboard 50 with the above-described mounting structure, when the LED 2 receives light and emits light at night or the like, the light is emitted from the hemispherical concave incident surface 3a of the rod lens 3. 3 is incident. Then, the light incident on the rod lens 3 travels in the distal direction (upward in FIG. 3) while being totally reflected in the rod lens 3, and a part of the light exits on the conical concave surface of the rod lens 3. The light is reflected by 3b and emitted from the rod lens 3 at a predetermined angle toward the signboard 50 side (opposite to the emission direction from the LED 2), and is irradiated on the surface of the signboard 50. Further, another part of the light reflected by the exit surface 3b of the rod lens 3 is directed to the reflecting plate 5, reflected by the reflecting surface 5b of the reflecting plate 5, and irradiated on the surface of the sign 50 toward the sign 50 side. Is done. As a result, as shown in FIG. 1, the surface of the signboard 50 is illuminated with an elliptical area R centered on the signboard lamp 1 by the light emitted from each signboard lamp 1. The entire surface is illuminated by a total of nine signboard lamps 1 and the information displayed on the surface of the signboard 50 is visible even at night.

  If the reflecting plate 5 is made of a light transmissive material, this portion can emit light. In this case, it is also possible to perform internal illumination using transmitted light after displaying information on the signboard 50 missing due to the through-hole 50a on the surface of the reflecting plate 5.

  As described above, according to the signboard illumination lamp 1 according to the present embodiment, the light emitted from the LED 2 and guided through the rod lens 3 is reflected from the exit surface 3n or the exit surface 3b at the tip of the rod lens 3. The reflection surface 5b of the plate 5 is reflected at a predetermined angle toward the sign 50 in the direction opposite to the emission direction so as to illuminate a predetermined region R (see FIG. 1) centering on the rod lens 3 of the sign 50. Therefore, even if the rod lens 3 is not greatly protruded from the sign 50, the entire sign 50 can be efficiently illuminated. For this reason, problems, such as a restriction | limiting in the installation place of the said sign lamp 1, and violation of the regulations, are solved.

  In addition, since the signboard illumination lamp 1 is not greatly exposed on the surface of the signboard 50, the design of the signboard 50 is not harmed by the signboard illumination lamp 1. And since the direct-view light from LED2 is not visible from the front of the sign 50, the direct-view glare is reduced, and the viewer of the sign 50 is not dazzled.

  Furthermore, in this embodiment, since the heat sink 7 is attached in a state of being in close contact with the substrate 6 on which the LED 2 is mounted, the heat generated by the lighting of the LED 2 is transferred from the base member 7a of the heat sink 7 to the plurality of radiation fins 7b. Conducted and efficiently dissipated to the surroundings. For this reason, the temperature rise of LED2 is suppressed and the fall of the luminous efficiency and lifetime of this LED2 are suppressed.

  Moreover, in this Embodiment, since the surface of the reflecting plate 5 was made into the plane 5a and information, such as a pattern and a character which were missing for the through-hole 50a of the signboard 50, was displayed on this surface 5a, it is missing in the display of the signboard 50 Therefore, the original function of the signboard 50 is not impaired by the through hole 50a.

<Embodiment 2>
Next, a signboard illumination lamp according to Embodiment 2 of the present invention will be described below with reference to FIG. 4 is a plan sectional view of the sign lamp according to the second embodiment of the present invention. In this figure, the same elements as those shown in FIG. The re-explanation about them is omitted.

  The signboard lamp 1 ′ according to the present embodiment is characterized in that another illumination unit 10 ′ is attached to the reflector 5 of the signboard lamp 1 according to the first embodiment. It is the same as that of the sign lamp 1 according to the first embodiment.

  Thus, according to the signboard lamp 1 ′ according to the present embodiment, the same effect as that obtained in the first embodiment can be obtained, and information (signboard 50) displayed on the surface of the reflector 5 can be obtained. The information supplementing the missing part) can be illuminated by another illumination unit 10 ', and the entire sign 50 can be illuminated brightly.

1,1 'signboard lighting 2 LED (light source)
DESCRIPTION OF SYMBOLS 3 Rod lens 3a Incident surface of a rod lens 3b Outgoing surface of a rod lens 3c Flange part of a rod lens 4 Transparent cover 4a Flange part of a transparent cover 4b Base of transparent cover 5 Reflecting plate 5a Plane of reflecting plate 5b Reflecting surface of reflecting plate 6 Substrate 7 Heat sink 7a Heat sink base member 7b Heat sink radiating fin 8,9 Screw 10,10 'Illumination unit 11 Sealing 12 Screw 50 Signboard 50a Signboard through hole 51 Mounting plate R Light irradiation area

Claims (5)

An illumination unit comprising a light source, a rod-shaped rod lens extending along the optical axis of the light source, a transparent cover that covers the rod lens from the outside, and a reflector that is attached to the front end of the transparent cover At least one
The light emitted from the light source of the illumination unit and guided through the rod lens is reflected at a predetermined angle in the direction opposite to the exit direction by the exit surface of the rod lens or the exit surface and the reflecting plate. A signboard illumination lamp configured to illuminate a predetermined area centered on the rod lens.   The sign lamp according to claim 1, wherein the rod lens is formed of a round bar-shaped light guide, and the exit surface and the reflecting surface of the reflecting plate are conical concave curved surfaces.   The signboard illuminating lamp according to claim 1 or 2, wherein a surface of the reflecting plate is a flat surface, and information lacking a signboard is displayed on the surface.   The signboard illumination lamp according to claim 3, wherein another illumination unit for illuminating the surface of the reflector is attached to the surface of the reflector. A plurality of holes are formed in the signboard, and the signboard illumination lamp according to any one of claims 1 to 4 is fixed to the signboard through each hole from the back side of the signboard. apparatus.

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