JP7129660B2 - lighting equipment - Google Patents

Description

TECHNICAL FIELD The present disclosure relates to lighting fixtures and, more particularly, to lighting fixtures having lenses for controlling light distribution.

As a conventional example, an emergency lighting fixture described in Patent Document 1 will be exemplified. A conventional example described in Patent Document 1 is a stair passage guide light that is installed on the wall of a staircase landing and illuminates the stairs and the landing that serve as an emergency evacuation passage. The instrument body in the conventional example is formed in a rectangular parallelepiped shape. A recess is provided in the lower surface of the instrument body. A halogen lamp, which is an emergency light source, is provided on the bottom of the recess. The halogen lamp is lit by power supplied from an emergency power supply (storage battery) housed in the instrument body.

JP 2012-174482 A

By the way, in the conventional example described in Patent Document 1, the inner side surface of the recess in which the halogen lamp is arranged rises substantially vertically from the bottom surface of the recess. Therefore, among the light emitted from the halogen lamp, the light reflected on the inner surface of the recess does not reach far.

An object of the present disclosure is to provide a lighting fixture that can easily deliver light over a long distance.

A lighting fixture according to an aspect of the present disclosure is formed in a box shape having a light-emitting portion that emits light and a plurality of walls , and a recess is provided in one wall of the plurality of walls. , a fixture body housing at least a portion of the light-emitting part, and a second wall adjacent to the first wall provided with the recess among the plurality of walls, and powered from a normal power supply. and a light-transmitting member having light diffusion properties and facing the light source unit . The light-emitting part has an LED that emits light when power is supplied from an emergency power supply in the event of a power failure of the normal power supply, and a light distribution member that distributes the light emitted from the LED over a wide angle. are placed in The second wall is positioned vertically above the first wall. A side surface surrounding the bottom surface of the recess is inclined in such a direction that the distance from the light emitting section increases as the distance from the bottom surface increases.

The luminaire of the present disclosure has an effect that light can be easily delivered to a long distance.

1 is a perspective view of a lighting fixture according to an embodiment of the present disclosure; FIG. FIG. 2 is an exploded perspective view of the same lighting fixture. FIG. 3 : is a front view of the lighting fixture same as the above. FIG. 4 is a right side view of the same lighting fixture. FIG. 5 is a bottom view of the same lighting fixture. FIG. 6 is a partial cross-sectional view of the same lighting fixture. FIG. 7 is a front view of a lighting fixture according to a modification of the above embodiment. FIG. 8 is a right side view of a lighting fixture according to a modified example of the same. FIG. 9 is a bottom view of a lighting fixture according to a modified example of the same. FIG. 10 is a cross-sectional view of a main part in another modified example of the above lighting fixture. FIG. 11 is a cross-sectional view of a main part in still another modification of the above lighting fixture.

Hereinafter, embodiments of the lighting fixture of the present disclosure will be described in detail with reference to the drawings. However, each drawing described in the following embodiments is a schematic drawing, and the ratio of the size and thickness of each component does not necessarily reflect the actual dimensional ratio. Note that the configurations described in the following embodiments are merely examples of the present disclosure. The present disclosure is not limited to the following embodiments, and various modifications can be made according to design and the like as long as the effects of the present disclosure can be achieved.

The lighting fixture 1 according to the embodiment is an emergency lighting fixture that serves both as an emergency light and a stairway guide light. The luminaire 1 is directly attached to, for example, the walls of corridors and stairs in common areas of an apartment complex. However, the lighting fixtures of the present disclosure are not limited to emergency lighting fixtures.

The lighting fixture 1 performs regular lighting with regular power supplied from a regular power supply (commercial power system or the like), and charges a storage battery (emergency power supply 5) with the regular power. Furthermore, the lighting fixture 1 provides emergency lighting with emergency power supplied from a storage battery (emergency power supply 5) when the normal power supply fails. In the following description of the lighting fixture 1, the front-rear, up-down and left-right directions indicated by arrows in FIG. For example, the forward direction of the lighting device 1 is the direction away from the wall surface to which the lighting device 1 is directly attached along the vertical direction (normal direction of the wall surface).

As shown in FIGS. 1 to 6, the lighting fixture 1 includes a fixture body 10, a body cover 2, a normal light source unit 3, an emergency light source unit 4, an emergency power supply 5, and the like.

The instrument main body 10 is formed in a rectangular parallelepiped box shape. Inside the fixture main body 10, there are a normal lighting circuit that causes the normal light source unit 3 to perform normal lighting, a charging circuit that charges the emergency power supply 5, an emergency lighting circuit that causes the emergency light source unit 4 to perform emergency lighting, and the like. Contained.

The instrument body 10 has a square front plate 11 and a back plate, a rectangular top plate and bottom plate 14, and a pair of rectangular side plates 15 (see FIGS. 1 to 4). A top plate protrudes forward from the upper end of the square back plate, and a bottom plate 14 protrudes forward from the lower end of the back plate. Side plates 15 protrude forward from the left and right ends of the back plate. The left and right ends of the top plate and the upper ends of the pair of side plates 15 are joined together. Similarly, the left and right ends of the bottom plate 14 and the lower ends of the pair of side plates 15 are connected. The back plate, the bottom plate 14 and the pair of side plates 15 are preferably integrally formed of, for example, a metal plate. One or more front plates 11 protrude forward from the front surface of the back plate so as to openably close the front surface of the space (internal space of the instrument body 10) surrounded by the top plate, the bottom plate 14, and the pair of side plates 15. can be attached to the mounting base of the The front plate 11 is made of, for example, a metal plate.

The body cover 2 has a square front wall portion 20 and a pair of rectangular side wall portions 21 . The body cover 2 further has a pair of rectangular openings 22 surrounded by the ends of the front wall 20 and the pair of side walls 21 . A pair of side wall portions 21 protrude rearward from the left end and right end of the front wall portion 20 . The front wall portion 20 and the pair of side wall portions 21 are integrally formed of translucent synthetic resin such as acrylic resin or polycarbonate resin (see FIGS. 1 and 2). A pair of openings 22 are provided at upper and lower ends of the front wall portion 20 and the pair of side wall portions 21 (see FIG. 1). In addition, the body cover 2 has a light diffusing property.

An L-shaped insertion piece 210 is integrally formed at the rear end of each side wall portion 21 so as to protrude rearward (see FIG. 2). Each of the insertion pieces 210 is inserted one by one from above the instrument main body 10 into the insertion grooves respectively provided at the left and right ends of the front end portion of the instrument main body 10 (see FIG. 2). That is, the body cover 2 is detachably attached to the instrument body 10 by inserting each of the pair of insertion pieces 210 into the pair of insertion grooves of the instrument body 10 .

The regular lighting circuit converts AC power supplied from a regular power supply into DC power, and causes the regular light source unit 3 to perform regular lighting with the converted DC power. The emergency power supply 5 has a plurality of battery cells electrically connected in series. Each of the plurality of battery cells is, for example, a nickel-hydrogen storage battery. The charging circuit converts AC power supplied from the normal power supply into DC power, and charges the emergency power supply 5 with the converted DC power. The emergency lighting circuit causes the emergency light source unit 4 to perform emergency lighting with DC power supplied from the emergency power supply 5 when the normal power supply fails.

The regular light source unit 3 has a regular LED 30 composed of a white illumination LED (Light Emitting Diode), an LED holder 31 that supports the regular LED 30, and a regular lens 32 that controls the light distribution of the light emitted from the regular LED 30 (FIG. 6). reference). The regular light source unit 3 further includes a lens cover 33 that covers the regular lens 32 from the front and diffuses the light distribution-controlled by the regular lens 32 (regular illumination light) (see FIGS. 2 and 3). The normal light source unit 3 is attached to the center of the front surface of the fixture body 10 (the front surface of the front plate 11) (FIGS. 1 to 3).

The common lens 32, as shown in FIG. 2, includes a lens body 320 and a flange 321 made of a translucent material such as glass (for example, quartz glass). The flange 321 is formed in an annular shape. The flange 321 protrudes outward from one end (rear end) of the side surface of the lens body 320 . The common lens 32 is attached to the front center of the instrument body 10 by screwing the flange 321 to the front plate 11 .

The lens cover 33 has a cover body 330 and a collar portion 331 . The cover main body 330 is formed in a dome shape. The cover body 330 is sized to cover the common lens 32 (see FIGS. 3 and 6). The collar portion 331 is formed in an annular shape protruding outward from the peripheral edge of the cover body 330 . The cover main body 330 and the flange portion 331 are integrally formed of translucent synthetic resin such as acrylic resin or polycarbonate resin. Further, the lens cover 33 has light diffusibility due to the diffusion material mixed in the synthetic resin. The lens cover 33 is attached to the center of the front surface of the instrument body 10 by screwing the collar portion 331 to the front plate 11 .

The light emitted from the regular LED 30 is subjected to light distribution control by the regular lens 32 . The light distribution-controlled by the common lens 32 (common illumination light) travels toward the front of the fixture body 10 so as to spread vertically and horizontally. However, at least part of the regular illumination light is diffused when passing through (the cover main body 330 of) the lens cover 33 .

The emergency light source unit 4 has an emergency LED 40 composed of an illumination white LED, an LED holder 41 that supports the emergency LED 40, and an emergency lens 42 that controls the light distribution of the light emitted from the emergency LED 40 (FIG. 5). and FIG. 6).

The emergency lens 42 distributes the light emitted from the emergency LED 40 (emergency illumination light) over a wide angle. Furthermore, the emergency lens 42 preferably distributes the emergency illumination light forward, downward, and laterally of the fixture body 10 . In addition, it is preferable that the tip (lower end) of the emergency lens 42 and its surroundings are recessed inward (upper) so that the tip does not protrude outside the bottom plate 14 of the instrument main body 10 (see FIG. 6). As a result, the irradiation range of the emergency illumination light from the emergency light source unit 4 can be further expanded.

The emergency light source unit 4 is housed in the center in the left-right direction in the lower portion of the fixture body 10 . Here, a recess 16 is formed in the center of the bottom plate 14 of the instrument body 10 so as to protrude toward the interior of the instrument body 10 . A circular hole 162 extends through the bottom surface 160 of the recess 16 . Moreover, the side surface of the recess 16 is formed in a shape corresponding to the side surface of a truncated cone, in other words, in a shape with a constant inclination angle. A portion of the emergency lens 42 protrudes outside the instrument body 10 through the hole 162 (see FIG. 6). Therefore, part of the light emitted from the emergency lens 42 is reflected by the side surface 161 of the recess 16 .

By the way, when the light source for regular lighting and the light source for emergency lighting are housed in one fixture body, these two light sources must be separated by flame-retardant material or separated by 5 cm or more (Nippon Lighting Industry Co., Ltd. (Refer to Appendix 8 of Standards for Emergency Lighting Equipment Technical Standards)

Therefore, in the lighting device 1 , the emergency light source unit 4 is arranged at the bottom (bottom surface 160 ) of the recess 16 provided in the bottom plate 14 of the device main body 10 . That is, in the lighting device 1, since the bottom plate 14 of the device main body 10 is made of a noncombustible material (metal plate), the side surface 161 (bottom plate 14) of the recess 16 serves as a wall, satisfying the above conditions (standards). can be done. If the fixture main body 10 is not provided with the recess 16 and the emergency light source unit 4 is arranged on the surface of the flat bottom plate 14, the distance between the normal light source unit 3 projected on the bottom plate 14 and the emergency light source unit 4 is must be at least 5 cm apart. However, in the lighting fixture 1, the distance between the regular light source unit 3 and the emergency light source unit 4 projected on the bottom plate 14 can be made closer than 5 cm, so the fixture body 10 can be miniaturized.

However, if the side surface of the recess 16 is vertical (parallel to the vertical direction), the emergency illumination light emitted from the emergency light source unit 4 may be blocked by the side surface of the recess 16 and may not reach far. be. Therefore, in the lighting device 1 , the side surface 161 of the recess 16 is inclined in a direction (diagonally downward) in which the distance from the emergency light source unit 4 increases as the distance from the bottom surface 160 increases. Therefore, part of the emergency illumination light emitted from the emergency light source unit 4 is reflected on the side surface 161 and easily reaches a long distance.

Next, modifications of the lighting fixture 1 according to the embodiment will be described with reference to FIGS. 7 to 9. FIG. The lighting fixture 1 of the modified example differs from the lighting fixture 1 according to the embodiment in that the body cover 2 is formed in a square plate shape. Moreover, the lighting fixture 1 of the modified example differs from the lighting fixture 1 according to the embodiment in that a radio wave sensor 6 is provided. The radio wave sensor 6, for example, transmits radio waves in the millimeter wave band and receives radio waves reflected back from an object. The radio wave sensor 6 detects the presence of an object by measuring the distance to the object from the round trip time of the radio wave. The normal lighting circuit does not allow the normal light source unit 3 to perform normal lighting when the radio wave sensor 6 does not detect the presence of an object. On the other hand, when the radio wave sensor 6 detects the presence of an object, the normal lighting circuit causes the normal light source unit 3 to perform normal lighting. That is, the normal lighting circuit causes the normal light source unit 3 to perform normal lighting when a person is present, and prevents the normal light source unit 3 from performing normal lighting when no person is present, thereby reducing power consumption. can.

The body cover 2 is formed in a square plate shape. The body cover 2 is attached to the instrument body 10 by two support portions 23 (see FIGS. 7 to 9). Each of the two support portions 23 includes a trapezoidal support piece 230, a mounting piece 231 projecting from the front end of the support piece 230, and a fixing piece projecting from the rear end of the support piece 230 and fixed to the instrument body 10. have. Each support part 23 has a support piece 230 and an attachment piece 231 projecting forward of the instrument body 10 from the center in the vertical direction of the left and right ends of the front plate 11 . It should be noted that the fixing piece of each support portion 23 is preferably screwed to the bottom plate 14 inside the instrument main body 10 . A bolt 232 is attached to each attachment piece 231 from the rear side. A bolt 232 (see FIG. 9) attached to each attachment piece 231 is passed through two through holes penetrating through the left and right ends of the main body cover 2, one each. The body cover 2 is supported by the two support portions 23 by tightening the thumb nuts 24 on the two bolts 232 protruding from the front surface of the body cover 2 (see FIGS. 7 to 9).

By the way, in each of the lighting fixtures 1 of the embodiment and modifications, the side surface 161 of the recess 16 may be a concave curved surface (see FIG. 10). If the side surface 161 of the recess 16 is a concave curved surface, the emergency illumination light from the emergency light source unit 4 is reduced compared to the case where the side surface 161 has a shape corresponding to a side surface of a truncated cone (a shape with a constant inclination angle). Although the irradiation range of is narrowed, the illuminance in the irradiation range can be increased.

In addition, in each of the lighting fixtures 1 of the embodiment and the modified example, the tip (lower end) of the emergency lens 42 and its periphery swell outward (lower side), and the tip portion protrudes outside the bottom plate 14 of the fixture body 10. (See FIG. 11).

As described above, the lighting fixture (1) according to the first aspect includes a light emitting part (emergency light source unit 4) that emits light, and a fixture body (10) that is formed in a box shape and accommodates at least part of the light emitting part. ). A device body (10) is formed in a box shape having a plurality of walls (front plate 11, bottom plate 14, side plates 15). A recess (16) is provided in one of the walls (bottom plate 14). The light emitter is located on the bottom surface (160) of the recess (16). A side surface (161) surrounding the bottom surface (160) of the recess (16) is inclined so that the distance from the light emitting part increases as the distance from the bottom surface (160) increases.

In the lighting fixture (1) according to the first aspect, the side surface (161) of the recess (16) is inclined in the direction of increasing the distance from the light emitting part as the distance from the bottom surface (160) increases. Part of the light (emergency illumination light) emitted from the part is reflected on the side surface (161), and the light (emergency illumination light) can be easily delivered to a long distance.

A lighting fixture (1) according to the second aspect can be realized by a combination with the first aspect. In the lighting fixture (1) according to the second aspect, the side surface (161) is preferably an inclined surface with a constant inclination angle.

The lighting fixture (1) according to the second aspect can easily deliver light (emergency illumination light) to a farther distance.

A lighting fixture (1) according to the third aspect can be realized by a combination with the first aspect. In the lighting fixture (1) according to the third aspect, the side surface (161) is preferably a concave curved surface.

The lighting fixture (1) according to the third aspect can widen the illumination range of light (emergency illumination light) and increase the illuminance in the illumination range.

A lighting fixture (1) according to the fourth aspect can be realized by combining with any one of the first to third aspects. In the lighting fixture (1) according to the fourth aspect, the light emitting part has an LED (emergency LED 40) and a light distribution member (emergency lens 42) that distributes the light emitted from the LED over a wide angle. is preferred.

The lighting fixture (1) according to the fourth aspect can widen the irradiation range of light (emergency illumination light).

The lighting fixture (1) according to the fifth aspect can be realized by combining with any one of the first to fourth aspects. In the lighting fixture (1) according to the fifth aspect, the second wall (front plate 11) adjacent to the first wall (bottom plate 14) in which the recess (16) is provided among the plurality of walls It is preferable to provide a light source unit (regular light source unit 3) that is arranged and that emits light by being fed with power from a regular power supply. The lighting fixture (1) according to the fifth aspect preferably includes a translucent member (body cover 2) that has light diffusing properties and faces the light source unit. It is preferable that the light-emitting part is powered by the emergency power supply (5) and emits light when the normal power supply fails. The second wall is preferably located vertically above the first wall.

In the lighting fixture (1) according to the fifth aspect, the light emitting section and the light source unit can be separated by the first wall and the second wall.

A lighting fixture (1) according to the sixth aspect can be realized by a combination with the fifth aspect. In the lighting fixture (1) according to the sixth aspect, it is preferable that the first wall is made of a noncombustible material.

In the lighting fixture (1) according to the sixth aspect, the distance between the light-emitting portion and the light source unit can be shortened to reduce the size of the fixture body (10).

1 lighting equipment 2 body cover (translucent member)
3 Regular light source unit (light source unit)
4 Emergency light source unit (light emitting part)
5 emergency power supply 10 instrument main body 11 front plate (wall; second wall)
14 bottom plate (wall; first wall)
15 side plate (wall)
16 recess 40 emergency LED (LED)
42 emergency lens (light distribution member)
160 Bottom 161 Side

Claims (4)

a light-emitting portion that emits light;
a fixture body formed in a box shape having a plurality of walls, one wall of the plurality of walls being provided with a recess, and accommodating at least a portion of the light emitting unit;
a light source unit disposed on a second wall adjacent to the first wall provided with the recess among the plurality of walls and powered by a normal power supply to emit light;
a translucent member that has light diffusing properties and faces the light source unit;
with
The light-emitting part has an LED that emits light when power is supplied from an emergency power supply in the event of a power failure of the normal power supply, and a light distribution member that distributes the light emitted from the LED over a wide angle. is located in
The second wall is positioned vertically above the first wall,
A side surface of the recess surrounding the bottom surface is inclined in a direction such that the distance from the light emitting unit increases as the distance from the bottom surface increases.
lighting equipment. The side surface is an inclined surface with a constant inclination angle,
A lighting fixture according to claim 1 . The side surface is a concave curved surface,
A lighting fixture according to claim 1 . wherein the first wall is made of a noncombustible material;
The luminaire according to any one of claims 1-3 .

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