JP2010145806A - Display lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To reduce the cost of a holder part. <P>SOLUTION: A display lamp 1 includes a display unit 2, a light irradiation part 3, a holder part 4, a case 5, and a cover 6. The display unit 2 is composed of a plate-like light guide 8 for radiating light made incident from an upper end surface 8b from the front surface of the light guide 8 and a display panel 7 arranged oppositely to the front surface of the light guide 8, provided with a pictogram 22 attached to the display panel and having light permeability. The light irradiation part 3 irradiates the inside of the light guide 8 with light from the upper end surface 8b. The holder part 4 is formed by a metal with high thermal conductivity, stores the light irradiation part 3 and adjacently opposes the light irradiation part 3 to the upper end surface 8b of the light guide 8. The case 5 is formed like a box shape of which the front is opened, and is configured so that a lighting device 15 for turning on a light source of the light irradiation part 3 is stored in it and the display unit 2 and the holder part 4 are attached to the front of the case 5. The cover 6 is attached to the case 5 so as to cover the holder part 4 exposed from the front of the case 5. <P>COPYRIGHT: (C)2010,JPO&INPIT

Description

The present invention relates to an indicator lamp installed for guidance, guidance, crime prevention and the like in public facilities, commercial facilities, and the like.

Conventionally, various indicator lights for guidance, guidance, crime prevention and the like have been installed in various public facilities and commercial facilities such as office buildings, residential buildings, condominiums, movie theaters, subway premises, underground malls, and the like. For example, when there is a power outage due to a fire or accident in the above place, the guide lights installed to guide people to the emergency exits and evacuation stairs to promptly evacuate are also indicator lights. One. This type of indicator lamp generally includes a display unit including a light guide and a display panel, a light irradiation unit, and a case that houses a lighting device that turns on the light source of the light irradiation unit. The light guide is formed in a plate shape, and radiates light that enters the light guide from one end face from at least one side. The display panel is disposed so as to face the one side surface of the light guide, has display contents such as characters and marks, and has translucency. And a light irradiation part irradiates light in the light guide body from the said one end surface of a light guide.

By the way, the indicator lamp includes an embedded type in which a case is arranged on the back side of a ceiling or a wall, and a direct attachment type that is directly attached to a ceiling surface or a wall surface. For example, Patent Document 1
The indicator lamp described in the above is a type that is embedded in the ceiling, and this type of indicator lamp is designed for design because the case does not enter the field of view when viewing the display contents attached to the display panel. Are better. On the other hand, for example, the indicator lamp described in Patent Document 2 is of a type directly attached to the ceiling surface, and this type of indicator lamp is easily fixed with screws by bringing the upper end surface of the case into contact with the ceiling surface. Therefore, it is excellent in terms of construction and cost.

Moreover, there exists a thing as shown in FIG. 4 as an example of the direct attachment type to a ceiling surface. The indicator lamp 50 includes a display unit 2, a light irradiation unit 3, a holder unit 51 that supports the light irradiation unit 3, and a case 5. As shown in FIG. 4 (b), the display unit 2 is inserted from the upper surface of the panel case 9 by integrally fitting the diffusion portion 23, the light guide 8 and the reflection portion 24 into the display panel 7. Become. The display panel 7 is formed of a light-transmitting flame-retardant acrylic resin material in a flat rectangular box whose rear surface and upper surface are opened, and a pictogram 22 is displayed on the front surface as display contents (in the drawing). Then, the symbol for guidance to the emergency exit). The light guide 8 is
It is formed in a rectangular plate shape with a transparent acrylic resin material. The diffuser 23 is formed in a sheet shape, and the light emitted from the front side surface of the light guide 8 is displayed on the display panel 7 to which the pictogram 22 is attached.
It spreads evenly. The reflection part 24 is formed in a sheet shape and reflects light emitted from the rear side surface of the light guide 8. The panel case 9 is formed of a synthetic resin material in a flat rectangular box whose front surface and upper surface are open, and the left and right peripheral edges of the rear surface have four engaging portions 9a protruding outward (only the right peripheral edge in the figure is two). (Shown) is provided.

As shown in FIG. 4C, the light irradiation unit 3 is a printed wiring board 1 formed in an elongated rectangular plate shape.
1 and a plurality of light emitting diodes 12 serving as light sources arranged in parallel on the lower surface of the printed wiring board 11. The printed wiring board 11 is provided with three insertion holes 52 penetrating side by side in the left-right direction. In addition, a connection terminal 11 a is disposed on the right end of the lower surface of the printed wiring board 11.

The holder part 51 is comprised from the main-body part 51a and a pair of end part 51b, as shown in FIG.4 (c). The main body 51a is formed in an elongated shape as a whole by extrusion processing of a metal material (for example, aluminum material) having high thermal conductivity, and its cross section is formed in a substantially L shape. The pair of end portions 51b are formed in a substantially rectangular plate shape by a synthetic resin material, and are attached to the left and right end portions of the main body portion 51a. Screw holes (not shown) are formed in the upper end portion of the holder portion 51 at positions facing the insertion holes 52. Then, the light irradiation unit 3 is fixed to the holder unit 51 by inserting the three screws 53 into the insertion holes 52 and screwing them into the screw holes. Note that there is a holder portion 51 in which a main body portion and an end portion are integrally formed by die casting.

As shown in FIG. 4A, the case 5 is formed in a flat rectangular box whose front surface is open, and houses the lighting device 15 that lights the light emitting diode 12. The lamp connector of the connection line 21 led out from the lighting device 15 is connected to the connection terminal 11 a, and power is supplied to the light emitting diode 12 through the connection line 21. A pair of screw holes 1 drilled in the upper surface of the case 5
Screwed directly to the ceiling through 6 and 16. Further, the upper surface of the case 5 is provided with a wire insertion hole 17 through which a power connection wire (not shown) connecting the commercial AC power supply (not shown) and the input terminal of the terminal block 20 is inserted. .

As shown in FIG. 4A, the display unit 2 as described above has the front surface of the case 5 attached to the holder portion 51.
It is attached to the case 5 so as to be closed together. That is, the rear surface of the display unit 2 with respect to the peripheral edge of the front surface of the case 5 so that the four locking portions 9a of the panel case 9 are engaged with the four L-shaped pieces 5a protruding from the left and right inner wall surfaces of the case 5. Then, the display unit 2 is attached to the case 5 by sliding from above to below (see solid line arrows in the figure). On the other hand, the holder 51 is inserted into the upper end of the front surface of the case 5 from the front, and closes the gap between the upper end of the front surface of the case 5 while making the light emitting diode 12 and the upper end surface 8b of the light guide 8 face each other close to each other. (See dotted arrows in the figure).

And the light radiated | emitted from the light emitting diode 12 of the light irradiation part 3 injects into the inside of the light guide 8 from the upper end surface 8b of the light guide 8 which adjoins and opposes, and the light guide 8 is reflected and refracted. By radiating from the front side surface, the display panel 7 with the pictogram 22 arranged facing the front side surface is illuminated.
JP-A-5-72981 Utility Model Registration No. 3101018

However, when the main body 51a of the holder 51 is formed by extrusion processing, the conventional indicator lamp 50 prevents light emitted from the light irradiation unit 3 from leaking from both ends of the main body 51a to the outside. In order to improve the appearance of the sash appearance, the end portions 51b, 51b of the molded product
Therefore, there is a problem that the cost of the holder portion 51 is increased accordingly. In addition, even when the main body and the holder are integrally formed by die casting, the cost of the mold cost is high, and in particular, the same holder part cannot be diverted between the direct mounting type and the embedded type.
There was a problem that separate molds had to be prepared.

This invention is made | formed in view of the said reason, The objective is to provide the indicator lamp which can aim at the cost reduction of a holder part.

In order to achieve the above object, the invention according to claim 1 is a plate-like light guide that radiates light incident from one end surface from at least one side surface, and is arranged to face the one side surface, such as characters and marks. A display unit comprising a translucent display panel to which display content is attached; a light irradiating unit for irradiating light into the light guide from the one end surface; and housing the light irradiating unit and the light irradiating unit A holder part made of a metal having high thermal conductivity that faces the one end face of the light guide close to and facing the light guide body and a lighting device that is formed in a box shape with one face open and that turns on the light source of the light irradiation part are stored. The display unit and the holder part are attached to the one surface, and a cover attached to the case so as to cover the holder part exposed from the one surface of the case.

According to this invention, since the cover is attached to the case so as to cover the holder part exposed from the one surface of the case, the holder part is formed by an extrusion process that is lower in cost than die casting. However, it is not necessary to attach an end part to the both ends of the holder part. Moreover, the holder part manufactured by the extrusion process of the same metal mold | die can be used whether it is a direct attachment type or an embedding type. Therefore, cost reduction of a holder part can be achieved.

According to a second aspect of the present invention, in the first aspect of the invention, the one end portion of the light guide body having the one end surface or the holder portion that supports the one end portion of the light guide body may include the A ridge is formed in parallel with the longitudinal direction of the one end face of the light guide, and a groove is provided on the other side for slidingly inserting the ridge in the longitudinal direction.

According to this invention, since the light guide and the holder part are slidably engaged, leakage of light emitted from the light irradiation part to the outside is suppressed, and light is efficiently transmitted to the light guide. It is possible to irradiate one end surface, and it is possible to improve the light transmission efficiency.

According to a third aspect of the present invention, in the first or second aspect of the present invention, the light irradiating section includes a light emitting diode as a light source and an elongated printed wiring board on which the light emitting diode is mounted, and the printed wiring board. The holder portion that supports the concave portion is provided with a concave portion that slides and inserts both end portions extending in the longitudinal direction of the printed wiring board in the longitudinal direction.

According to this invention, since the printed wiring board and the holder part are slidably engaged, the light irradiation part can be easily attached to the holder part, and workability can be improved.

  In this invention, there exists an effect that the cost reduction of a holder part can be achieved.

Hereinafter, embodiments of the present invention will be described with reference to FIGS. In addition, since the basic structure of the indicator lamp 1 of this embodiment is common to the indicator lamp 50 in the above-mentioned prior art except for a part, the same code | symbol is attached | subjected and demonstrated to a common component. Omitted. Indicator light 1 of this embodiment
As shown in FIG. 1, the display unit 2, the light irradiation unit 3, the holder unit 4, the case 5,
A type directly attached to a ceiling surface provided with a cover 6.

As shown in FIGS. 1 and 2, the display unit 2 includes a display panel 7, a diffusion portion 23 (not shown in FIGS. 1 and 2), a light guide 8 and a reflection portion 24 (not shown in FIGS. 1 and 2). (Not shown) is inserted from the upper surface of the panel case 9. However, unlike the light guide 8 of the prior art, the light guide 8 of the present embodiment is overlapped with the display panel 7, the diffusion part 23, and the reflection part 24 to be integrated with the upper end part of the light guide 8. It is made larger than the dimension of the up-down direction of another member so that 8a may protrude. Further, the upper end portion 8a of the light guide 8 has a longitudinal direction of the upper end surface 8b (the left-right direction in FIG. 1).
3 in parallel with each other on the front surface and the rear surface. Note that the pictogram 22 illustrated in the present embodiment is a symbol for guiding to an emergency exit, but other than this, for example, a mark, characters, or an arrow for the purpose of guidance and crime prevention may be used.

As shown in FIGS. 1 and 2, the light irradiation unit 3 includes a printed wiring board 11 and a plurality of light emitting diodes 12, and a connection terminal 11 a is disposed on the right end of the bottom surface of the printed wiring board 11.
That is, the basic configuration is the same as that of the conventional light irradiation unit 3. However, the printed wiring board 11 of the present embodiment is not provided with the insertion hole 52 for screwing to the holder portion 4.

As shown in FIGS. 1 and 2, the holder portion 4 is formed in an elongated rectangular tube shape whose bottom surface and left and right end surfaces are opened by extrusion processing of a metal material (for example, aluminum material) having high thermal conductivity. The wall surface 4a and the wall surface 4b in the opening of the holder portion 4 are respectively provided with groove portions 13 and 13 which are recessed outwardly across both longitudinal ends of the holder portion 4 as shown in FIG. On the upper side, recesses 14 are provided.

As shown in FIG. 2, the light irradiation unit 3 and the holder unit 4 are engaged by sliding and inserting both end portions extending in the longitudinal direction of the printed wiring board 11 into the recesses 14 and 14 of the holder unit 4. Further, as shown in FIGS. 1 and 2, the display unit 2 and the holder portion 4 are engaged by slidingly inserting the protrusions 10 of the light guide 8 into the grooves 13 and 13 of the holder portion 4 (see FIG. 1). (See dashed arrow in 1).

The display unit 2, the light irradiation unit 3, and the holder unit 4 that are attached and integrated as described above are more workable than the conventional display lamp 50 that is fixed by screwing. In addition, the display unit 2 and the holder portion 51 of the display lamp 50 of the conventional example are not fixed to each other in advance, and the upper end portion of the display unit 2 is fitted to the lower surface of the holder portion 51 for the first time after being attached to the front surface of the case 5. The distance between the light emitting diode 12 and the upper end surface 8b of the light guide 8 has been determined. Therefore, in consideration of the variation in the distance due to the individual difference of each member during the fitting, a certain amount of clearance is provided between the light emitting diode 12 and the upper end surface 8b. But,
In the display lamp 1 of the present embodiment, the display unit 2 and the holder portion 4 are slidably engaged before being attached to the front surface of the case 5, so that it is not necessary to provide the clearance as described above, and the light emitting diode 12 and the light guide 8 The upper end surface 8b can be arranged closer to each other. Accordingly, leakage of light emitted from the light irradiation unit 3 to the outside is suppressed, and light is efficiently transmitted to the upper end surface 8 of the light guide 8.
b can be irradiated, and the light transmission efficiency can be improved. Contrary to the above description, the protrusion 10 may be provided on the holder part 4 side and the groove part 13 may be provided on the light guide 8 side.

As shown in FIG. 1, the lighting device 15 in the case 5 includes a lighting circuit in which an electronic component that is housed in the housing portion 18 and lights the light emitting diode 12 is mounted on a printed wiring board (not shown). A rechargeable secondary battery installed in a storage unit 19 disposed on the left side of the storage unit 18 (
(Not shown) and a terminal block 20. One end of a power connection wire (not shown) is connected to the input terminal of the terminal block 20, and the other end of the power connection wire is connected to the case 5 through the wire insertion hole 17.
Is connected to a commercial AC power source (not shown). The above-described lighting circuit includes a normal lighting circuit, an emergency lighting circuit, and a charging circuit. The normal lighting circuit lights the light emitting diode 12 with power supplied from a commercial AC power supply. on the other hand,
When the power supply from the commercial AC power source is cut off due to a power failure, the lighting circuit for emergency is stored in the storage unit 19.
The battery is turned on with power supplied from the secondary battery. The charging circuit charges the secondary battery with electric power from a commercial AC power supply during normal operation.

The cover 6 is formed of a synthetic resin material in an elongated box shape whose lower surface and rear surface are opened. Engagement pieces 6a and 6a whose front end portions protrude outward are provided at the rear end portions of the left and right end surfaces, respectively. ing.

The display unit 2, the light irradiation unit 3, and the holder unit 4 are attached to the case 5 so as to block the front surface of the case 5, and the cover 6 covers the front surface and the upper surface of the holder unit 4 exposed from the front surface of the case 5. Attached to. That is, the rear surface of the display unit 2 and the holder unit 4 is downward from above the front peripheral edge of the case 5 so that the four locking portions 9a of the panel case 9 engage with the four L-shaped pieces 5a of the case 5. By sliding to the display unit 2
The light irradiation unit 3 and the holder unit 4 are attached to the case 5 (see solid line arrows in FIG. 1). Then, the engagement pieces 6a, 6a on the left and right ends of the cover 6 are respectively inserted into the gap between the left end portion of the holder portion 4 and the case 5 left inner wall surface and the gap between the right end portion of the holder portion 4 and the case 5 right inner wall surface. The cover 6 is attached to the case 5 by being inserted and elastically locked into a recess (not shown) provided on the left and right inner wall surfaces of the case 5. At this time, as shown in FIG. 2, the appearance of the appearance is improved by making the upper surface of the cover 6 and the upper surface of the case 5 flush with each other.

Thus, since the indicator lamp 1 of this embodiment is provided with the cover 5 attached so that the holder part 4 exposed from the front surface of the case 5 may be covered, the holder part 4 is removed by the extrusion process at a cost lower than that of die casting. Even if formed, the end portions 5 are provided at both ends as in the main body portion 51a of the conventional example.
There is no need to attach 1b. In addition, since the main body 51a of the conventional example was exposed to the outside, it was painted to improve the appearance, but the holder 4 of the present embodiment is not exposed to the outside, so it is necessary to perform coating. Nor. Therefore, cost reduction of the holder part 4 can be achieved.

By the way, the indicator lamp of the present embodiment is not limited to the above-described direct-mounted type indicator lamp 1 on the ceiling surface.
A ceiling-mounted indicator lamp 30 as shown in FIG. 3 may be used. The indicator light 30
Since the basic configuration is the same as that of the indicator lamp 1, common constituent elements are denoted by the same reference numerals and description thereof is omitted.

The indicator lamp 30 includes a display unit 31, a light irradiation unit 3, a holder unit 4, a case 32, and a cover 33. The display unit 31 is common to the indicator lamp 1 except for the panel case 34. That is, unlike the panel case 9, the panel case 34 is not provided with the four locking portions 9 a. Instead, projections 34a and 34a are provided at the upper ends of the left and right ends of the panel case 34 so as to project outward in a rectangular tube shape. The case 32 is formed in a rectangular box having an open bottom surface, houses the lighting device 15 in the opening, and is attached to the ceiling (not shown) by embedding. In addition, a pair of claw pieces 32 a and 32 a are juxtaposed in the front-rear direction on the left and right inner wall surfaces of the case 32. The pair of claw pieces 32a and 32a protrudes toward the inside of the case 5,
Further, they are bent so as to face each other (in FIG. 3, only the claw piece 32a behind the left inner wall surface is shown). The cover 33 is formed in a rectangular plate shape, and an insertion portion 35 penetrating in an elongated rectangular shape is provided at the center thereof. A pair of spring bodies 36, 36 formed by bending a wire rod into a substantially rhombus shape are disposed on the left and right ends of the upper surface of the cover 33.

The cover 33 is attached to the case 32 so as to close the lower surface of the case 32 from below while allowing the insertion unit 35 to insert the display unit 31 integrated with the light irradiation unit 3 and the holder unit 4. At this time, the spring bodies 36, 36 are respectively inserted into the gaps between the pair of claw pieces 32a and 32a while reducing the width in the front-rear direction by elastic deformation. When the portion having the largest front-rear width of the spring body 36 passes through the claw pieces 32a, 32a, the spring bodies 36, 36 are respectively locked to the claw pieces 32a, 32a while expanding the front-rear width by an elastic restoring force. The protrusions 34a, 34a are the cover 3
3, the display unit 31 does not fall down below the cover 33.

Thus, since the indicator lamp 30 of this embodiment is provided with the cover 33 attached so that the holder part 4 exposed from the lower surface of the case 32 may be covered, the holder part 4 is removed by the extrusion process at a cost lower than that of die casting. Even if it forms, it is not necessary to attach the end part 51b to both ends like the main-body part 51a of a prior art example. Therefore, cost reduction of a holder part can be achieved.

As described above, both the direct-mounted type indicator lamp 1 and the embedded type indicator lamp 30 are manufactured by extruding the same mold by providing the cover 6 and the cover 33, respectively. The holder part 4 can be used. Therefore, the cost of the holder part can be further reduced.

It is a disassembled perspective view of embodiment of this invention. It is principal part sectional drawing in the same as the above. It is a disassembled perspective view of the ceiling embedded type in the same as the above. An example of the conventional direct-mounted type indicator lamp is shown, (a) is an exploded perspective view of the indicator lamp, (b) is an exploded perspective view of the display unit, and (c) is a perspective view of the light irradiation part and the holder part. It is.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Indicator lamp 2 Display unit 3 Light irradiation part 4 Holder part 5 Case 6 Cover 7 Display panel 8 Light guide 8b Upper end surface 15 Lighting device 22 Pictogram

Claims (3)

It comprises a plate-like light guide that emits light incident from one end surface from at least one side surface, and a translucent display panel that is disposed opposite to the one side surface and has display contents such as characters and marks attached thereto. A display unit, a light irradiator for irradiating light into the light guide from the one end surface, and heat for housing the light irradiator and making the light irradiator close to the one end surface of the light guide A case in which a holder part made of a metal having high conductivity and a lighting device that lights up the light source of the light irradiation part are formed in a box shape with one side opened, and the display unit and the holder part are attached to the one side And a cover attached to the case so as to cover the holder part exposed from the one surface of the case. Either one end of the light guide having the one end face or the holder part supporting the one end of the light guide is parallel to the longitudinal direction of the one end face of the light guide. The indicator lamp according to claim 1, wherein a protrusion is formed, and a groove for slidingly inserting the protrusion in the longitudinal direction is provided on the other. The light irradiation unit includes a light emitting diode as a light source and an elongated printed circuit board on which the light emitting diode is mounted, and the holder unit that supports the printed circuit board has a longitudinal direction of the printed circuit board. The indicator lamp according to claim 1 or 2, further comprising a concave portion that slides and inserts both end portions extending in the longitudinal direction.

Images