JP2001351417A - Guide light - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a guide light which has a clear-cut appearance and can improve uniformity ratio of illumination of a display panel. SOLUTION: A front opening of a rectangular parallelepiped fixture body 10 is covered with a square display unit 20 with a left to right width almost same as that of the fixture body 10 opened to a front and a top to bottom width smaller than that of the fixture body 10 and a lamp unit 30 arranged along a top edge of a display panel 21 of the display unit, and moreover, a peripheral shape of the display unit and the lamp unit combined is along that of a part surrounding the front opening. The display unit 20 is provided with the display panel 21 and a light guide plate 22 arranged at the rear of the panel 21 to guide light of a cold-cathode fluorescent lamp 3 to the display panel 21. The lamp unit 30 holds the cold-cathode fluorescent lamp 3 at a position facing a top end edge of the light guide plate 21.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a guide light.

[0002]

2. Description of the Related Art In recent years, since a guide lamp is not very noticeable in normal times, a straight fluorescent lamp of a hot cathode is housed in a fixture body as a light source, and a display panel provided on a front surface of the fixture body is illuminated. Instead of the above-described conventional guide light, a large number of high-brightness guide lights using a cold-cathode straight-tube fluorescent lamp as a light source have been used. Here, the high-intensity guide light has higher brightness than the conventional guide light, is relatively small in size as compared to the conventional guide light, and has a smaller display surface area of the display panel than the conventional guide light. have. By the way, in the case of high-intensity guide lights,
Depending on how the light from the light source is emitted from the display panel on which the symbol for guiding the light to the evacuation exit is written,
Two types, that is, a so-called "internal illumination type" and a type called a "light guide plate type" or "panel type" are used.

[0003] In the former, which is referred to as "internal illumination type", a light source is arranged on the rear side of a display panel, and light is emitted directly to the front of the display panel. On the other hand, the latter type called “light guide plate type” or “panel type” has a display panel and a light guide plate provided on the rear side of the display panel, and is disposed opposite to one edge of the light guide plate. The light from the light source is guided to the other end side of the light guide plate by total reflection in the light guide plate, and is incident on the light diffusion portion provided on the rear surface of the light guide plate, and the light diffused by the light diffusion portion to the display panel. The incoming light is emitted to the front of the display panel.

[0004]

Since the latter "light guide plate type" or "panel type" high-intensity light uses a light guide plate, the luminance distribution on the display surface of the display panel depends on the configuration of the light guide plate. Is easily designed, and it is easy to increase the uniformity of the luminance of the display surface of the display panel. However, since the latter high-intensity guide light has a box-shaped appliance main body containing a light source and a lighting device disposed on a display unit having a display panel and a light guide panel, the appearance is not clear. There was a defect.

[0005] On the other hand, the former "inside illumination type" high-intensity guide light has an advantage that the lighting device and the like can be housed in the appliance body on the rear side of the display panel, so that the external appearance is clear. Since it is not used, when the area of the display surface is the same, there is an advantage that the weight of the entire guide light device can be reduced as compared with the latter. However, in the former case, since the light of the light source is directly applied to the display panel, there is a problem that it is difficult to increase the uniformity of the luminance of the display surface of the display panel.

[0006] In addition, in the case of an "inside-illuminated" guide light, due to the structure of the display panel, a frame which surrounds the entire upper, lower, left and right sides of the display panel is usually provided and attached to the fixture body. In the high-intensity guide light of the formula, the width of the frame surrounding the entire circumference of the display panel is formed to be the same width over the entire circumference and is attached to the fixture body located above the frame. There was a risk of impairing the sense of unity.

The present invention has been made in view of the above circumstances, and an object of the present invention is to provide a guide light having a clean appearance and capable of increasing the uniformity of a display panel.

[0008]

According to a first aspect of the present invention, a lighting device for lighting a light source is provided in a rectangular parallelepiped appliance main body having an open front, and in a power failure state of a commercial power supply, the emergency power supply is switched to the lighting device. A guide light for supplying power to light a light source to illuminate a display panel, wherein a rectangular display panel and a frame disposed along one edge of the display panel cover a front opening of an appliance body, and the display panel A lighting device for lighting a light source inside a rectangular parallelepiped appliance body with a front opening, wherein an outer peripheral shape combining the frame and the frame portion is along the outer periphery shape of a part surrounding the front opening in the appliance body. Is provided, and a rectangular display panel and a frame disposed along one edge of the display panel cover the front opening of the instrument body, and the outer peripheral shape of the combination of the display panel and the frame is the instrument body. At the front opening Because it follows the outer shape of the part, it can have a neat appearance, and because it is a separate member from the instrument body and has a frame portion arranged along one edge of the display panel In addition, a light source can be provided in the frame portion, and a configuration in which a light guide panel is provided on the rear surface side of the display panel can be adopted.

In a second aspect of the present invention, in the first aspect of the present invention, a light guide plate is provided on a rear surface side of the display panel to guide light of the light source to the display panel.
Since the light guide plate is disposed in the frame portion so as to face one edge of the light guide plate, the appearance is clear and the uniformity of the luminance of the display surface of the display panel can be increased.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a frame piece formed along three sides excluding the one side edge of the display panel and narrower than the frame portion is provided. Since the frame portion and the frame pieces form a rectangular frame that surrounds the entire periphery of the display panel, the boundary between the display panel and the surroundings where the guide light is installed is clearly separated. The display surface is raised and seen, and the attractiveness of the display and the identifiability of the display are improved.

According to a fourth aspect of the present invention, in the third aspect of the present invention, the front surface of the display panel and the front surface of the frame are formed substantially flush with each other, so that the appearance is improved.

According to a fifth aspect of the present invention, in the first to third aspects of the present invention, the frame is detachably attached to the instrument main body with the display panel attached to the instrument main body. Since the display panel is attached to the instrument main body, the frame portion can be detached, and the mounting operation of the display panel can be performed only in a state where the frame portion is removed. In addition, when a light source is provided in the frame portion, it is only necessary to attach and detach the frame portion when replacing the light source.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the frame portion is provided with an operation concave portion for removing from the instrument main body at a rear edge contacting a front edge of the instrument main body. This facilitates the operation for removing the frame from the instrument body.

According to a seventh aspect of the present invention, in the first to third aspects of the present invention, the tool main body is provided with a rib protruding upward over the entire outer peripheral portion of the upper surface.
The strength of the upper part of the appliance body is improved, and when directly attached to a construction surface such as a ceiling, only the upper end edge of the rib comes into contact with the construction surface, so that the rib is directly attached to the construction surface inside the rib. Mounting brackets can be stored and attached, and the appearance can be improved, and the temperature rise of the light source can be suppressed.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, a portion of the rib, which extends in the front-rear direction of the instrument main body, is formed to protrude upward inside a peripheral edge of an upper surface of the instrument main body. Therefore, even when directly attached to a construction surface such as a ceiling, it can be attached without making the unevenness of the construction surface noticeable, and a gap is formed between the upper surface of the frame portion and the construction surface. The attachment / detachment of the frame portion to / from the main body is facilitated, and the work of replacing the light source when the light source is provided in the frame portion can be facilitated.

According to a ninth aspect of the present invention, in the invention of the seventh aspect, a round hole-shaped large portion having a diameter larger than a diameter of a head portion of a mounting screw is provided on a portion of the upper wall of the instrument body inside the rib. Since a keyhole-shaped mounting hole in which a groove narrower than the diameter of the head of the mounting screw is formed at a part of the front edge of the diameter portion, the mounting screw is loosely screwed into the ceiling surface. By passing the head of the mounting screw through the large-diameter portion of the mounting hole and sliding the appliance body backward so that the head of the mounting screw enters the portion corresponding to the groove, tightening the mounting screw, Since the device main body can be attached to the ceiling surface, the gap formed between the rear surface of the device main body and the wall behind the device main body in the installed state can be easily reduced, and the interior and the like can be easily removed. It is possible to maintain the beauty of the important space That.

According to a tenth aspect of the present invention, in accordance with the first to third aspects of the present invention, the power supply of the commercial power supply to the lighting device is forcibly cut off on the lower wall of the appliance main body and the emergency power source is turned on. An exposure hole for exposing the operation unit of the inspection switch for confirming whether the inspection switch is provided and a confirmation window for visually recognizing a display element for displaying the state of the light source and the state of the emergency power supply are provided in close proximity. Since the confirmation window is provided in front of the exposure hole, it is easy to see the display of the display element even when it is directly attached to the construction surface such as a wall, and the display element is displayed even when the inspection switch is operated. Can be visually recognized.

[0018]

DESCRIPTION OF THE PREFERRED EMBODIMENTS A guide light according to the present embodiment will be described with reference to FIGS.

The guide light according to the present embodiment has a rectangular parallelepiped appliance main body 10 with a front opening and a rectangular (square in this embodiment) display panel 21 and covers most of the front opening of the appliance main body 10. A display unit 20 to be covered, and a straight-tube cold-cathode fluorescent lamp 3 as a light source, which is provided on the upper edge of the display unit 20 so as to cover the remaining portion of the front opening of the instrument body 10 which is not covered by the display unit 20. And a lamp unit 30 disposed along the same.

Hereinafter, the instrument body 10 will be described first.

A lighting device 4 for lighting the cold-cathode fluorescent lamp 3 is provided in the appliance body 10. Further, an emergency power supply block 6 having a storage battery as an emergency power supply for supplying power to the lighting device 4 when a commercial power failure occurs is provided in the appliance body 10. Here, as shown in FIG. 7, the lighting device 4 is connected to the terminal block 7 connected to the commercial power supply via three wires 91, and connects two wires 92 to the emergency power supply block 6. And is usually supplied with power from a commercial power source to turn on the cold cathode fluorescent lamp 3,
The power is supplied from the storage battery to turn on the cold-cathode fluorescent lamp 3 when the commercial power supply fails.

The appliance body 10 is made of synthetic resin, and has a cutout knockout portion which forms a power supply hole for inserting an electric wire (not shown) from a commercial power supply connected to the terminal block 7 into the appliance body 10. 11 and 11 are formed on the upper wall and the rear wall, respectively. In the rear wall of the instrument main body 10, two releasable knockout portions 1 are formed to form mounting holes through which mounting screws used for directly attaching to the wall surface are inserted.
3 ′, 13 ′ (see FIG. 7) are formed to be separated in the left-right direction. Further, two releasable knockout portions 1 are formed on the upper wall of the instrument body 10 to form a keyhole-shaped mounting hole for inserting a mounting screw used for directly mounting the device on the ceiling surface.
3 and 13 (see FIG. 2 and FIG. 4) are formed apart from each other in the left-right direction. Therefore, when the apparatus main body 10 is mounted on a ceiling surface, on a wall surface, or the like, by forming a power supply hole and a mounting hole as necessary, a power supply hole into which a power line is not inserted and a mounting hole through which a mounting screw is not inserted are generated. Can be prevented, and the aesthetic appearance can be enhanced. In addition, as shown in FIG. 7, metal reinforcing metal fittings 8 and 8 ′ are provided on the lower surface of the upper wall and the front surface of the rear wall, respectively. It is connected to a screw-type ground terminal 9 provided at 8 ′ via an electric wire 90.

As shown in FIG. 7, the power supply to the lighting device 4 is forcibly cut off at the lower right end (the right end in FIG. 7) in the appliance body 10, and the emergency power supply block 6 is turned off.
A check switch 51 comprising a push button switch for confirming whether or not to light up, a red light emitting diode 52 as a display element for a lamp monitor for displaying the state of the storage battery and the cold cathode fluorescent lamp 3, and a charging state of the storage battery. An inspection block 50 composed of a green light-emitting diode 53 as a display element for displaying a charge monitor to be displayed and a circuit board 54 composed of a printed wiring board on which the inspection switch 51 and the light-emitting diodes 52 and 53 are mounted is provided. I have. Here, when the red light-emitting diode 52 is lit, it indicates a lamp abnormality (lamp detachment, cracking, etc.) of the cold cathode fluorescent lamp 3, and when it is blinking, the storage battery or the cold cathode fluorescent lamp 3 needs to be replaced. , And when it is off, it indicates that it is normal. The green light emitting diode 53 indicates that the storage battery is not charged when turned off, and indicates that it is normal when turned on. The lighting device 4 has a function of detecting a lamp abnormality and a function of detecting a state of a storage battery, and a function of controlling each of the light emitting diodes 52 and 53 based on a detection result by these functions. The inspection block 50 is covered with a cover 55.

An inspection switch 5 is provided on the lower wall of the instrument body 10.
Since the exposure hole 15 (see FIGS. 5 and 7) for exposing the one operation section 51a is formed, the operation section 51a can be operated from the lower surface side of the instrument body 10. Also, on the lower wall of the instrument body 10, each light emitting diode 52,
Confirmation windows 16 and 17 (see FIG. 5) are formed in the portions corresponding to the respective 53. Therefore, the display of each light emitting diode 52, 53 can be visually recognized through the confirmation windows 16, 17 from the lower surface side of the appliance body 1. Here, since the confirmation windows 16 and 17 are provided in front of the exposure hole 15 on the lower wall of the device main body 10, the display of the display element can be easily recognized even when directly attached to the wall surface.
Moreover, even when the operation section 51a of the inspection switch 51 is operated, the display of each light emitting diode 52, 53 can be visually recognized.

As shown in FIG. 2 and FIG. 7, the panel case 2 of the display unit 20 is substantially parallel to the lower wall of the instrument main body 10 on each inner surface of the front part of both side walls of the instrument main body 10.
A lower end edge of an L-shaped engagement piece 24 protruding from the rear surface of the display unit 3 abuts on the upper surface and restricts downward movement of the display unit 20, and is substantially parallel to a front end edge of the instrument body 10. And two L-shaped locking pieces 18 each of which is formed integrally with the front end edge of the restriction piece 18a and is formed of a holding piece 18b in which the front end of the engagement piece 24 overlaps the rear side. I have.

On the other hand, the display unit 20 includes a display panel 21 made of an acrylic resin having a light-transmitting property on which a symbol for guiding to the evacuation opening is provided, and a cold cathode fluorescent lamp 3 provided on the rear side of the display panel 21. Light guide plate 22 made of a transparent acrylic resin for guiding the light to the display panel 21, a reflection sheet (not shown) disposed on the rear surface of the light guide plate 22, the display panel 21, the light guide plate 22, and the reflection sheet And a panel case 23 made of synthetic resin. Here, the panel case 23 is formed of the same material as the instrument body 10. Also, two L-shaped engaging pieces 24 are provided at the right and left ends of the rear surface of the panel case 23 so as to protrude in the vertical direction.
In the display panel 21, the color of the hatched portion in FIG. 3 is green. In addition, the light guide plate 22
It is formed so that the thickness becomes thinner toward the lower side in the vertical direction.

The panel case 23 has a square mounting base 23a having a lateral width substantially equal to the lateral width of the appliance main body 10 and having a vertical width smaller than the vertical width of the appliance main body 10;
A holding frame 23b is provided on the peripheral portion of the front surface of the mounting base 23 so as to protrude continuously and integrally along three sides excluding the upper side.

As shown in FIG. 2, the display panel 21 is provided on the inner surfaces of the holding frame 23b at the left and right ends.
A guide groove 23c is formed to slidably hold the guide groove 23c. On the other hand, the display panel 21 has side pieces 21a protruding rearward from the left and right edges, respectively.
A guide rib 21b, which is slidably introduced into the guide groove 23c, is provided on the outer surface of each side piece 21a. Accordingly, the display panel 21 is held by the panel case 23 by introducing the guide ribs 21b into the guide grooves 23 from above the holding frame 23b of the panel case 23 and sliding the guide ribs 21b downward. Here, the movement of the display panel 21 in the downward direction, the front-back direction, and the left-right direction is regulated by the panel case 23. Therefore, the display unit 2
0 indicates that the display panel 2 is prepared by preparing a plurality of types of display panels having different symbols in advance.
1 can be replaced as appropriate.

To attach the display unit 20 to the instrument body 10, the position of the instrument body 10 and the display unit 20 in the left-right direction is adjusted so that the rear surface of the panel case 23 abuts on the front edges of both side walls of the instrument body 10. The lower surface of the display unit 20 is positioned higher than the lower surface of the instrument body 10 so that the engagement pieces 24 corresponding to the locking pieces 18 protruding from the inner surfaces of both side walls of the instrument body 10 are shifted upward. While being displaced upward, the display unit 2 is brought into contact with the rear surface of the panel case 23 against each front edge of both side walls of the instrument body 10.
0, the lower edge of each engagement piece 24 comes into contact with the upper surface of the restriction piece 18a of each locking piece 18 and the front surface of each engagement piece 24 Holding piece 1
8b, the display unit 20 is in contact with the rear surface of the device main body 1.
0, the display unit 2 for the instrument body 10
The movement of 0 in the left-right direction, the downward direction, and the front-back direction is regulated. In the state where the display unit 20 is temporarily held in the appliance body 10 in this manner, a gap slightly smaller than the vertical width of the lamp unit 30 is formed between the plane including the upper surface of the appliance body 10 and the upper edge of the display panel 21. Is done. The lamp unit 30 is detachably attached to the front surface of the appliance body 10 in a state where the gap is eliminated and the front opening of the appliance body 10 is covered together with the display unit 20 when the display unit 20 is attached to the appliance body 10. . In order to remove the display unit 20 from the appliance body 10, the display unit 20 is detached from the appliance body 10 by holding the display unit 20 with the locking piece 18 and the holding piece 18.
What is necessary is just to slide to the position where b does not overlap, and to remove ahead. Note that the width of the holding frame 23b is smaller than the width (vertical width) of the lamp unit 30.

As shown in FIG. 12, the lamp unit 30 has an L-shaped cross section, and has side walls formed integrally on both left and right end surfaces, and supports 35, 35 inside the respective side walls.
, A straight tube-shaped cold cathode fluorescent lamp 3 supported by a pair of supports 35 of the lamp holder 31, and respective electrodes (not shown) at both ends of the cold cathode fluorescent lamp 3. ), Respectively, and terminal pieces 36, 36 projecting rearward from the rear surfaces of the support bases 35, 35, and support bases 35, 25 having a U-shaped cross section with an open lower surface and surrounding the cold cathode fluorescent lamp 3. And a reflection plate 32 supported by. Here, the lamp unit 30 holds the cold-cathode fluorescent lamp 3 at a position where the cold-cathode fluorescent lamp 3 is arranged at a position facing the upper edge of the light guide plate 24 in a state of being attached to the appliance body 10. The lamp holder 31 is made of a synthetic resin, is formed of the same material as the device main body 10 and the panel case 23, and has the same color.

The right and left upper portions of the rear surface of the lamp holder 31 are formed with guide pieces 3 having an L-shaped cross section and arranged along the inner surfaces of the right and left corners of the upper portion of the instrument body 10.
3, 33 protrude rearward. Below the guide pieces 33, 33, the dimensions of the guide pieces 33, 33 that overlap the terminal pieces 36, 36 in the left-right direction and protrude from the rear surface of the lamp holder 31 outside the respective terminal pieces 36, 36. About half of the projections are provided.

On the other hand, as shown in FIG. 7, the terminal pieces 36, 36 are connected to the lighting device 4 via electric wires 93, 93, respectively, inside the upper portions of both side walls in the appliance body 10.
Are inserted from the front, and the terminal pieces 36, 36 are electrically connected and sockets 60, 60 are mechanically connected. Here, each socket 60, 60
The connecting piece 3 is provided between the device body 10 and each side wall thereof.
Clearances 61, 61 into which the front wheels 4, 34 are inserted from the front are formed.

The lamp holder 31 has an operation concave portion 31a at the rear end edge thereof which comes into contact with the front end edge of the instrument body 10 for detaching the lamp holder 31 from the instrument body 10. Operation recess 31a
The inner peripheral surface of a plane parallel to the front edge of the appliance body 10 is formed in an arc shape, and a part of the coin is
By inserting the lamp unit 30 into the lamp unit 30 and applying a force in a direction away from the appliance body 10, the lamp unit 30 can be detached from the appliance body 10. Here, since a part of the coupling pieces 34, 34 overlap the terminal pieces 36, 36, it is possible to prevent coins or the like from hitting the terminal pieces 36, 36 when the lamp unit 30 is removed. , 36 can be prevented from being damaged. Moreover, the operation concave portion 31
By forming the inner peripheral surface of a into the above-mentioned arc shape,
It is possible to suggest to the contractor that the coin can be removed using a coin, and it is possible to eliminate a sense of discomfort when viewed from the side. Further, in the present embodiment, the lamp unit 30 is attached to the appliance main body 10 from the front of the appliance main body 10 and can be removed from the appliance main body 10 to the front. It is only necessary to move the lamp unit 30 in the front-rear direction, so that even if there is a ceiling or a wall near the fixture body 10, there is no hindrance to the mounting work of the fixture body 10. In the present embodiment, the attachment / detachment of the lamp unit 30 to / from the appliance body 10 is performed in the front-rear direction on the front side of the appliance body 10, but the lamp unit 30 is slid in the left-right direction on the front side of the appliance body 10 for attachment / detachment. Alternatively, a configuration in which the device body 10 is attached to and detached from the front side of the device body 10 from obliquely below may be employed.

In this embodiment, the lamp holder 31 and the holding frame 23b of the lamp case 23 form a rectangular frame surrounding the entire periphery of the display panel 21. Therefore, the boundary between the display panel 21 and the surroundings where the guide light is installed can be clearly separated, and the display surface of the display panel 21 can be seen and emerged, so that the attractiveness of the display and the identifiability of the display are improved.

Here, the display unit 20 has a good appearance because the front surface of the display panel 21 and the front surface of the frame are formed on substantially the same plane. In short, the front surface of the display panel 21 and the front surface of the frame are substantially flush. However, since a part of the lower end of the lamp holder 31 is positioned so as to overlap the upper part of the display panel 21 in the front-rear direction, the lower part of the front surface of the lamp holder 31 has
An inclined surface 31b is formed such that the amount of projection from the display panel 21 becomes smaller as it goes downward. The upper part of the display panel 21 is pressed by a part of the lower end of the lamp holder 31, so that the display panel 21 and the display unit 20 can be prevented from coming off the panel case 23 and the appliance body 10.

In this embodiment, a square display unit 20 having a lateral width substantially equal to the lateral width of the appliance body 10 and a vertical width smaller than the vertical width of the appliance body 10 and a display panel of the display unit 20 are provided. A lamp unit 30 disposed along the upper edge covers the front opening of the appliance main body 10, and the outer peripheral shape of the display unit 20 and the lamp unit 30 together with the lamp unit 30 surrounds the front opening in the appliance main body 10. Along the shape. Thus, in the present embodiment, a clean appearance can be obtained,
The uniformity of the luminance of the display surface of the display panel 21 can be increased.

Further, since the tool body 10 is provided with a rib 12 projecting upward along the entire periphery of the outer peripheral portion of the upper surface, the upper end of the rib 12 when directly attached to a construction surface such as a ceiling is provided. Since only the edge is in contact with the construction surface, a fitting for directly attaching to the construction surface can be housed and mounted inside the rib 12, thereby improving the appearance and suppressing the temperature rise of the cold cathode fluorescent lamp 3. can do. In addition, since a gap is formed between the upper surface of the lamp unit 30 and the construction surface, it is easy to attach and detach the lamp unit 30 to and from the fixture body 10, and to replace the cold cathode fluorescent lamp 3 held by the lamp unit 30. Becomes easier. Here, the rib 12
Of these, a portion along the front-rear direction of the appliance main body 10 is protruded upward on the inner side of the periphery of the upper surface of the appliance main body 10. Therefore, it is possible to attach the work surface without making the unevenness noticeable.

The upper surface of the instrument body 10 is provided with a rib 12
The knockout portions 11, 13, and
13 are formed apart from each other. For this reason, by cutting off the knockout portions 11, 13, and 13, it can be directly attached to the ceiling surface using the mounting screws. Here, a mounting hole formed by cutting off the knockout portion 13 has a part of a front edge of a large-diameter portion having a round hole shape larger than the diameter of the head of the mounting screw. A groove narrower than the diameter is formed in a continuous keyhole shape.

Therefore, with the mounting screw loosely screwed into the ceiling surface (construction surface), the large diameter portion of the mounting hole is passed through the head of the mounting screw, and the head of the mounting screw corresponds to the groove. By sliding the mounting screw after sliding to the part to be
0 can be easily attached. Moreover, when directly attached to the ceiling surface near the wall, the gap formed between the rear surface of the instrument body 10 in the installed state and the wall behind the instrument body 10 can be easily reduced, and emphasis is placed on interiors and the like. The beauty of the space can be maintained.

Further, when the cold cathode fluorescent lamp 3 is replaced, only the lamp unit 30 needs to be removed from the fixture body 10, so that the replacement operation of the cold cathode fluorescent lamp 3 becomes easy.

[0041]

According to the first aspect of the present invention, a lighting device for lighting a light source is provided in a rectangular parallelepiped appliance main body having a front opening, and in the event of a commercial power failure, power is supplied from the emergency power supply to the lighting device to turn on the light source. A guide light for lighting and illuminating a display panel, wherein a rectangular display panel and a frame disposed along one edge of the display panel cover the front opening of the appliance body, and the display panel and the frame A lighting device for lighting a light source is provided in a rectangular parallelepiped appliance main body having a front opening, and a rectangular display panel is provided. And a frame disposed along one edge of the display panel to cover the front opening of the appliance body, and the outer peripheral shape of the combination of the display panel and the frame portion surrounds the front opening in the appliance body. Along Therefore, it is possible to provide a neat appearance, and furthermore, since it has a frame portion which is a separate member from the device main body and is arranged along one edge of the display panel, it is possible to provide a light source in the frame portion. This makes it possible to adopt a configuration in which the light guide panel is provided on the rear surface side of the display panel.

According to a second aspect of the present invention, in the first aspect of the present invention, there is provided a light guide plate disposed on a rear side of the display panel to guide light of the light source to the display panel.
Since the light guide plate is disposed in the frame so as to face one edge of the light guide plate, there is an effect that the appearance is clear and the uniformity of the luminance of the display surface of the display panel can be increased.

According to a third aspect of the present invention, in the first or second aspect of the present invention, a frame piece formed along three sides excluding the one side edge of the display panel and narrower than the frame portion is provided. Since the frame portion and the frame pieces form a rectangular frame that surrounds the entire periphery of the display panel, the boundary between the display panel and the surroundings where the guide light is installed is clearly separated. There is an effect that the display surface is prominently displayed, and the attractiveness of display and the identifiability of display are improved.

According to a fourth aspect of the present invention, since the front surface of the display panel and the front surface of the frame are formed substantially flush with each other, the appearance is improved.

According to a fifth aspect of the present invention, in the first to third aspects of the present invention, the frame is detachably attached to the instrument main body in a state where the display panel is attached to the instrument main body. Since the display panel is attached to the instrument main body, the frame portion can be detached, and the mounting operation of the display panel can be performed only in a state where the frame portion is removed. In addition, when a light source is provided in the frame portion, it is only necessary to attach and detach the frame portion when replacing the light source, so that there is an effect that the work of replacing the light source becomes easy.

According to a sixth aspect of the present invention, in the fifth aspect of the present invention, the frame is provided with an operation concave portion at a rear end abutting on a front edge of the instrument main body for detaching from the instrument main body. This has the effect that the operation for removing the frame from the instrument body is facilitated.

According to a seventh aspect of the present invention, in the first to third aspects of the present invention, the tool main body is provided with a rib protruding upward over the entire outer periphery of the upper surface.
The strength of the upper part of the appliance body is improved, and when directly attached to a construction surface such as a ceiling, only the upper end edge of the rib comes into contact with the construction surface, so that the rib is directly attached to the construction surface inside the rib. The mounting bracket can be housed and mounted, so that the appearance is improved and the temperature rise of the light source can be suppressed.

According to an eighth aspect of the present invention, in the invention of the seventh aspect, a portion of the rib, which extends in the front-rear direction of the instrument main body, is formed so as to protrude upward inside the periphery of the upper surface of the instrument body. Therefore, even when directly attached to a construction surface such as a ceiling, it can be attached without making the unevenness of the construction surface noticeable, and a gap is formed between the upper surface of the frame portion and the construction surface. There is an effect that the attachment / detachment of the frame portion to / from the main body becomes easy, and the work of replacing the light source when the light source is provided in the frame portion can be facilitated.

According to a ninth aspect of the present invention, in the invention of the seventh aspect, a round hole-shaped large hole having a diameter larger than the diameter of the head of the mounting screw is provided on the upper wall of the instrument body at a position inside the rib. Since a keyhole-shaped mounting hole in which a groove narrower than the diameter of the head of the mounting screw is formed at a part of the front edge of the diameter portion, the mounting screw is loosely screwed into the ceiling surface. By passing the head of the mounting screw through the large-diameter portion of the mounting hole and sliding the appliance body backward so that the head of the mounting screw enters the portion corresponding to the groove, tightening the mounting screw, Since the device main body can be attached to the ceiling surface, the gap formed between the rear surface of the device main body and the wall behind the device main body in the installed state can be easily reduced, and the interior and the like can be easily removed. It is possible to maintain the beauty of the important space There is an effect that that.

According to a tenth aspect of the present invention, in accordance with the first to third aspects of the present invention, the power supply of the commercial power supply to the lighting device is forcibly cut off on the lower wall of the appliance main body and the emergency lighting power source is turned on. An exposure hole for exposing the operation unit of the inspection switch for confirming whether the inspection switch is provided and a confirmation window for visually recognizing a display element for displaying the state of the light source and the state of the emergency power supply are provided in close proximity. Since the confirmation window is provided in front of the exposure hole, it is easy to see the display of the display element even when it is directly attached to the construction surface such as a wall, and the display element is displayed even when the inspection switch is operated. There is an effect that can be visually recognized.

[Brief description of the drawings]

FIG. 1 is an explanatory diagram of component arrangement in an embodiment.

FIG. 2 is a schematic exploded perspective view of the same.

FIG. 3 is a front view of the same.

FIG. 4 is a top view of the same.

FIG. 5 is a bottom view of the same.

FIG. 6 is a side view of the same.

FIG. 7 is a front view showing a state where the display unit is removed.

FIG. 8 is a front view of the display unit of the above.

FIG. 9 is a bottom view of the display unit.

FIG. 10 is a side view of the same display unit.

FIG. 11 is a rear view of the display unit.

12A and 12B show the same lamp unit, wherein FIG. 12A is a front view, FIG. 12B is a bottom view, FIG. 12C is a rear view, and FIG. 12D is a side view.

[Explanation of symbols]

 Reference Signs List 3 cold cathode fluorescent lamp 10 fixture body 20 display unit 21 display panel 22 light guide plate 23 lamp case 30 lamp unit 31 lamp holder

 ──────────────────────────────────────────────────続 き Continued on the front page F term (reference) 5C096 AA01 AA05 AA25 BA01 BA02 BB41 CA02 CB01 CC10 CC32 CD02 CD53 DA01 DA03 DA04 DD04 FA03

Claims (10)

[Claims] A lighting device for lighting a light source is provided in a rectangular parallelepiped appliance main body having an open front surface. In a power failure state of a commercial power supply, an emergency power supply supplies power to the lighting device to turn on the light source and illuminate a display panel. A lamp, wherein a rectangular display panel and a frame disposed along one edge of the display panel cover the front opening of the instrument body, and the outer shape of the combination of the display panel and the frame is an instrument. A guide light characterized by being along an outer peripheral shape of a portion surrounding a front opening in a main body. 2. A light guide plate disposed on a rear surface side of the display panel to guide light of the light source to the display panel, wherein the light source is provided in the frame so as to face one edge of the light guide plate. The guide light according to claim 1, wherein the guide light is provided in the guide light. 3. The display panel according to claim 3, wherein the one side edge of the display panel is removed.
With a frame piece formed along the side and narrower than the frame portion,
The guide light according to claim 1, wherein the frame portion and the frame piece form a rectangular frame that surrounds the entire periphery of the display panel. 4. The guide light according to claim 3, wherein a front surface of the display panel and a front surface of the frame are formed substantially flush with each other. 5. The apparatus according to claim 1, wherein the frame is detachably attached to the device main body when the display panel is mounted on the device main body. Guide light described in Crab. 6. The guide light according to claim 5, wherein the frame portion is provided with an operation concave portion at a rear edge contacting a front edge of the device main body to be detached from the device main body. 7. The guide according to claim 1, wherein the device main body is provided with a rib protruding upward over the entire outer periphery of the upper surface. light. 8. The device according to claim 7, wherein a portion of the rib extending in the front-rear direction of the device main body is protruded upward inside a peripheral edge of an upper surface of the device main body.
Guide light as described. 9. An upper wall of the instrument main body, a portion inside the rib, a part of a front edge of a large-diameter portion having a round hole shape larger than a diameter of a head of the mounting screw, and the mounting screw. 8. The guide light according to claim 7, wherein a keyhole-shaped mounting hole is formed in which a groove narrower than the diameter of the head is formed. 10. An operation unit of an inspection switch for forcibly shutting off a supply of commercial power to the lighting device and confirming whether or not to light with the emergency power source is exposed on a lower wall of the appliance body. An exposure hole to be provided and a confirmation window for visually recognizing a display element that displays the state of the light source and the state of the emergency power supply are provided close to each other, and the confirmation window is provided in front of the exposure hole. The guide light according to any one of claims 1 to 3, wherein