JP2019102257A - Light fitting - Google Patents

Abstract

To provide a ceiling embedded type light fitting which can achieve proper lighting in two or more different situations.SOLUTION: A light fitting 10, which is one example of an embodiment, is a ceiling embedded type light fitting and includes: a main light source unit 20; a sub light source unit 30; and a cover 40 which covers parts of the main light source unit 20 and the sub light source unit 30 and has a circular shape in a bottom view.SELECTED DRAWING: Figure 1

Description

  The present disclosure relates to a luminaire.

  DESCRIPTION OF RELATED ART Conventionally, the ceiling-embedded type lighting fixture which inserts the instrument main body containing a light source unit in the embedding hole of a ceiling, and is attached to a ceiling is known widely (for example, refer patent document 1). Such luminaires are generally referred to as downlights. As the ceiling-embedded lighting fixtures, not only ordinary lighting fixtures used on a daily basis, but also emergency lighting fixtures for illuminating a room, a passage or the like so as to be able to evacuate quickly in the event of a power failure are also commercially available.

Unexamined-Japanese-Patent No. 2017-157522

  By the way, the conventional emergency lighting equipment equipped with a downlight type LED light source is an emergency only equipment and is not used on a daily basis. On the other hand, ordinary LED downlight fixtures used on a daily basis can not be used in an emergency such as a power failure. That is, in the LED downlight, there is no conventionally known a ceiling-embedded luminaire that can be used on a daily basis and under special conditions such as a power failure. For this reason, for example, the user must install an emergency lighting device in addition to a normal lighting device, and it is necessary to secure a space for it.

  A lighting fixture which is one aspect of the present disclosure is a ceiling-embedded lighting fixture (downlight), and a lower surface covering a main light source unit, a sub light source unit, the main light source unit, and a part of the sub light source unit. And a cover having a circular shape.

  With the ceiling-mounted lighting device (downlight) according to the present disclosure, appropriate lighting can be realized in two or more different situations. For example, the lighting fixtures according to the present disclosure can realize ordinary lighting and emergency lighting with one unit.

It is the perspective view which looked at the lighting fixture which is an example of embodiment from the downward direction. It is the perspective view which looked at the lighting fixture which is an example of embodiment from upper direction. FIG. 3 is a cross-sectional view taken along line AA in FIG. It is a bottom view of the lighting fixture which is an example of an embodiment, and is a figure showing the state where it was attached to the ceiling. It is a perspective view of a cover which is an example of an embodiment. It is a bottom view of the lighting fixture which is another example of an embodiment.

  Hereinafter, with reference to the drawings, an example of an embodiment of a lighting device according to the present disclosure will be described in detail. In the present specification, for convenience of explanation, with the lighting fixture mounted on a horizontal ceiling, the vertically upper side of the lighting fixture is referred to as “upper” and the vertically lower side as “lower”.

  The lighting apparatus according to the present disclosure is attached to a horizontal ceiling in a library, public facilities such as a station, commercial facilities such as a department store, stores, offices, houses, rooms such as factories, walkways, etc. It is also possible to attach it to the ceiling which inclined to the opposite side. The ceiling to which the lighting fixtures are attached may be any part that divides the upper part of the building space, and may be, for example, a ceiling such as an entrance porch or a terrace.

  FIG. 1 is a perspective view of a luminaire 10 as an example of the embodiment as viewed from below. FIG. 2 is a perspective view of the luminaire 10 as viewed from above, and FIG. 3 is a cross-sectional view taken along the line AA in FIG. As shown in FIGS. 1 to 3, the lighting fixture 10 includes a main light source unit 20, an auxiliary light source unit 30, and a cover 40 having a circular lower surface shape covering a part of the main light source unit 20 and the auxiliary light source unit 30. Prepare. The lighting fixture 10 is inserted into a buried hole formed in the ceiling and attached to the ceiling with the cover 40 directed vertically downward. The lighting fixture 10 is a ceiling-mounted fixture and is generally referred to as a downlight.

  In the luminaire 10, the main light source unit 20 implements normal lighting that is routinely used. On the other hand, the auxiliary light source unit 30 realizes emergency lighting that illuminates a room, a passage, etc. so that it can be evacuated quickly, for example, at the time of power failure. In the present embodiment, the light source of the auxiliary light source unit 30 will be described as an emergency light source which lights up in an emergency. As shown in FIG. 2, the luminaire 10 further includes a battery 60 for supplying power to the light source of the auxiliary light source unit 30.

  The luminaire 10 is used, for example, in combination with a general ceiling-mounted luminaire equipped only with a light source unit that realizes ordinary illumination. When the luminaires 10 are mounted in the aisle, the luminaires 10 may be mounted at a ratio of one to several common luminaires (e.g. every other four may be mounted).

  The lighting apparatus 10 includes a lighting control unit 70 connected to the main light source unit 20 and the auxiliary light source unit 30, respectively. The lighting control unit 70 detects, for example, a lighting circuit for lighting the light sources of the main light source unit 20 and the sub light source unit 30, a charge and discharge circuit for controlling charging and discharging of the battery 60, and a supply stop of commercial power, that is, a power failure. It has a detection part etc. The auxiliary light source unit 30 is supplied with power from the battery 60 by the function of the lighting control unit 70 and is turned on at the time of a power failure.

  In addition, the lighting fixture 10 includes a fixing member 50 for integrating the main light source unit 20, the auxiliary light source unit 30, the cover 40, the battery 60, the lighting control unit 70, and the like. The fixing member 50 has a main light source unit 20, an auxiliary light source unit 30, a cover 40, and a top plate 51 arranged to cover the upper side of the battery 60. A pair of fixing pieces 52 extending downward is formed at one end of the top plate 51, and the lighting control unit 70 is fixed to the fixing pieces 52. The lighting control unit 70 may be rotatably fixed to the fixing piece 52.

  The main light source unit 20 and the auxiliary light source unit 30 have light source modules 21 and 31, respectively. The light source modules 21 and 31 have, for example, a structure in which a plurality of light sources are mounted on a substrate. A circuit board on which metal wiring is formed is used as the substrate. Moreover, each light source unit may have a heat sink for efficiently dissipating the heat generated by the light source. Note that the light source module 31 that lights up only when a power failure occurs is generally smaller than the light source module 21 for normal illumination.

  To the light source module 21 is connected a power wire (not shown) drawn from the lighting control unit 70. On the other hand, the auxiliary light source unit 30 (light source module 31) is connected to the power wiring drawn from the battery 60, and connected to the control wiring drawn from the lighting control unit 70 (all not shown) . The auxiliary light source unit 30 may have, for example, a dedicated lighting circuit, and the lighting state is controlled based on the signal output from the lighting control unit 70. The power of the battery 60 may be supplied to the auxiliary light source unit 30 via the lighting control unit 70.

  It is preferable that the light emitting element which comprises the light source of the light source modules 21 and 31 is a semiconductor light emitting element, and LED (Light Emitting Diode) is especially preferable among them. The light emitting element may be sealed by a sealing layer containing a phosphor. In this case, the light source emits white light by converting part of the light of the light emitting element into light of a longer wavelength by the phosphor. The light source modules 21 and 31 may be either a COB (Chip On Board) type module or an SMD (Surface Mount Device) type module, and the configuration thereof is not particularly limited.

  The main light source unit 20 has a bottomed cylindrical or cup-shaped base portion 22. The light source module 21 is housed in the base 22. In the base portion 22, an insertion hole 26 for passing a wire connected to the light source module 21 is formed. Further, the main light source unit 20 has a reflecting member 23 fixed to the base portion 22 and a translucent cover 24 fixed to the reflecting member 23. The light source module 21 may be sandwiched by the top plate portion of the base portion 22 and the reflecting member 23, and may be fixed to the top plate portion of the base portion 22. The base portion 22 is made of, for example, a metal material such as iron or aluminum. The base portion 22 is a housing portion of the light source module 21 and also functions as a heat sink for dissipating the heat of the light source module 21. The base 22 may be provided with a radiation fin.

  The reflecting member 23 is a member that controls the light distribution of the light emitted from the light source module 21. The reflecting member 23 is a cylindrical body whose upper and lower ends are opened and the inner diameter is enlarged toward the lower end, and reflects at least a part of the light from the light source module 21 to the translucent cover 24 side. A holder structure for holding the substrate of the light source module 21 may be formed on the periphery of the upper end opening of the reflecting member 23. A metal layer may be formed on the inner surface of the reflecting member 23 by vapor deposition, plating, sputtering or the like, and may be mirror-finished by polishing or the like. Alternatively, a white coating film containing a white pigment may be formed.

  The translucent cover 24 covers the lower end opening of the reflection member 23 and is fixed to the lower part of the reflection member 23. The reflecting member 23 and the light transmitting cover 24 each have a fixing structure to be fitted to each other. The translucent cover 24 is, for example, a transparent member made of glass or resin. Alternatively, it may be a milky white translucent member containing a filler or void for light diffusion. In addition, the light transmitting cover 24 may be a lens that controls the light distribution of the light that has passed through the reflecting member 23. The translucent cover 24 (lens) may have a total reflection surface formed in an annular shape on the light incident surface facing the reflective member 23 side. In addition, on the light emitting surface facing downward of the translucent cover 24, a plurality of unevenness for light diffusion may be formed.

  The light sources of the main light source unit 20 may be configured to be exchangeable. In the present embodiment, the light source module 21 including the light source is not fixed to the base portion 22 by welding, bonding using an adhesive or the like, and the base portion 22 and the reflection member 23 can be separated without breaking. Engaging structure. That is, the main light source unit 20 has a structure in which the light source module 21 can be attached to and detached from the base 22, and the light source module 21 can be replaced by removing the reflection member 23 from the base 22.

  As described above, the auxiliary light source unit 30 is an emergency light source unit that lights up at the time of a power failure, and the light source module 31 is lit by the power supplied from the battery 60. The luminaire 10 can be provided with a secondary light source unit 30 in addition to the main light source unit 20, thereby achieving normal lighting and emergency lighting with one unit. In addition, since the sub light source unit 30 is an emergency used only at the time of a power failure, it is not necessary to design the performance such as glare strictly compared to the main light source unit 20. The light source module 31 is smaller than the light source module 21 and has a low luminous flux (low output), for example.

  The auxiliary light source unit 30 has a lower holder 32 and an upper holder 33 engaged with each other. In addition, the sub light source unit 30 has a translucent cover 34. The light source module 31 is accommodated in the upper holder 33. The translucent cover 34 is disposed so as to cover the lower side of the light source module 31, and the peripheral edge portion of the cover is sandwiched by the lower holder 32 and the upper holder 33. Since the sub light source unit 30 is an emergency light source unit, the light transmissive cover 34 is preferably made of glass in consideration of fire resistance. In the present embodiment, the dome-shaped translucent cover 34 is used, but the structure is not particularly limited.

  The sub light source unit 30 has, for example, a connection portion 37 to which a power wiring drawn from the battery 60 and a control wiring drawn from the lighting control unit 70 are connected. In addition, the auxiliary light source unit 30 is provided with a check lever 36 for shutting off the power supply from the commercial power supply to put the lighting apparatus 10 in a power failure state. The inspection lever 36 protrudes downward from an opening 46 formed in the cover 40. By pulling the inspection lever 36 into a power failure state, inspection of the auxiliary light source unit 30 can be easily performed. Furthermore, the auxiliary light source unit 30 is provided with a display unit for displaying the charge state of the battery 60, a press-type switch for starting an inspection mode, a receiver for receiving an infrared signal of a remote control for inspection, and the like. It may be

  The sub light source unit 30 is preferably disposed closer to the lighting control unit 70 than the main light source unit 20. Generally, more wires drawn from the lighting control unit 70 are connected to the auxiliary light source unit 30 than the main light source unit 20. Therefore, by arranging the sub light source unit 30 in the vicinity of the lighting control unit 70, the wiring connection between the sub light source unit 30 and the lighting control unit 70 becomes easy.

  As described above, the fixing member 50 includes the light source unit, the cover 40, and the top plate 51 covering the battery 60 and the like, and integrates them. The main light source unit 20 is fixed to the top 51 via the support member 25 fixed to the top of the base 22. Similarly, the sub light source unit 30 is fixed to the top 51 via a support member 35 engaged with the upper holder 33. The fixing member 50 also has an annular frame 53 disposed under the lighting device 10 and a support frame 56 connecting the annular frame 53 and the top plate 51. Each light source unit and the battery 60 are disposed to fit inside the annular frame 53.

  The annular frame 53 is provided with a spring locking portion 54 to which a spring (not shown) for locking the cover 40 is locked. In the present embodiment, two spring locking portions 54 are arranged side by side in the radial direction of the annular frame 53. To the support frame 56, claws 55 for fixing the lighting apparatus 10 to a ceiling are fixed. For example, the support frame 56 is formed with a guide rail that slidably supports the claws 55 in the vertical direction, and the claws 55 can be fixed at a desired position along the guide rails. The claws 55 sandwich the ceiling plate with the annular frame 53, whereby the lighting apparatus 10 is attached to the ceiling.

  In addition, although the lighting fixture 10 has a structure in which each light source unit is fixed to the top plate 51 via each support member 25 and 35, each light source unit is disposed by sliding, rotation, etc. without disassembling each component. It may be movable and changeable. By making at least one of the main light source unit and the auxiliary light source unit movable, for example, when the battery 60 is replaced, the light source unit does not get in the way and smooth replacement becomes possible. Alternatively, replacement of the light source module is facilitated.

  The battery 60 is a secondary battery that supplies power to the auxiliary light source unit 30 at the time of a power failure, and is charged in a normal state where power is supplied from a commercial power supply. For the battery 60, a nickel cadmium battery, a nickel hydrogen battery, a lithium ion battery, a lead storage battery or the like can be used. The battery 60 is held by a battery holder 61 fixed to the top plate 51. For example, the battery 60 is disposed closer to the lighting control unit 70 than the main light source unit 20 in the vicinity of the sub light source unit 30.

  Hereinafter, the arrangement of the main light source unit 20 and the auxiliary light source unit 30 and the configuration of the cover 40 will be described in detail with further reference to FIGS. 4 and 5. FIG. 4 is a bottom view of the luminaire 10 and shows a state of being attached to a ceiling, that is, the state of the luminaire 10 as viewed from a room, a passage or the like. FIG. 5 is a perspective view of the cover 40 as viewed from above.

  The luminaire 10 has a structure in which the main light source unit 20 and the sub light source unit 30 are integrated by the fixing member 50 as described above. The main light source unit 20 and the auxiliary light source unit 30 may be arranged at the same height in the vertical direction of the lighting apparatus 10, but are preferably arranged offset in the vertical direction. By making the heights of the light source units different, interference with each other can be easily prevented, and a compact fixture design can be made.

  As shown in FIG. 3, the sub light source unit 30 is preferably disposed closer to the lower end side of the lighting fixture 10 than the main light source unit 20. The main light source unit 20 is preferably disposed away from the lower end of the lighting apparatus 10 and above the ceiling surface in order to reduce glare, but the auxiliary light source unit 30 is an emergency used only at the time of a power failure. There is no need to consider glare reduction etc. The translucent cover 34 of the sub light source unit 30 may be disposed at substantially the same position as the ceiling surface. In order to facilitate securing the brightness of the emergency lighting, the auxiliary light source unit 30 is preferably disposed in the vicinity of the lower end of the lighting fixture 10.

  As shown in FIG. 4 and FIG. 5 etc., a first opening 41 for exposing a part of the main light source unit 20 is a cover 40 which covers a part of each light source unit and is fixed to the lower part of the lighting fixture 10; A second opening 42 for exposing a part of the auxiliary light source unit 30 is formed. The light emitting surface of the light transmitting cover 24 is exposed from the first opening 41, and the light emitting surface of the light transmitting cover 34 is exposed from the second opening 42. The cover 40 hides not only the light source units but also the fixing member 50, the battery 60, and the like to improve the design of the lighting apparatus 10. In the example shown in FIG. 4, although each of the first opening 41 and the second opening 42 has a circular shape in a bottom view, the shape of each opening is not limited to a circular shape. The diameter of the first opening 41 may be larger than the diameter of the second opening 42, for example, two to five times larger.

  The cover 40 has a flange 45 formed in an annular shape. Since the annular frame 53 is disposed on the upper surface of the flange 45, the flange 45 can be said to be a portion that hides the annular frame 53. The flange 45 is formed with an opening 46 through which the inspection lever 36 is inserted. In addition, the cover 40 has a recess 43 and a flat portion 44 in the range surrounded by the flange 45. In the cover 40, the first opening 41 is formed in the recess 43, and the second opening 42 is formed in the flat plate portion 44. In the lower surface view of the cover 40, the area ratio of the concave portion 43 to the flat portion 44 is, for example, 50:50 to 70:30.

  The recess 43 is a portion greatly recessed upward from the flange 45, and the first opening 41 is formed at the upper end of the recess 43. The recess 43 can be said to be a portion that bulges upward when the cover 40 is viewed from above. A spring fixing portion 48 is provided on the upper surface of the recess 43 at a position where the cover 40 faces the spring locking portion 54 (see FIG. 2). To the spring fixing portion 48, a spring locked to the spring locking portion 54 is fixed. The recess 43 has, for example, a substantially semicircular or substantially crescent shape in a bottom view. A metal layer may be formed on the inner surface of the recess 43 by vapor deposition, plating, sputtering or the like, as with the inner surface of the reflective member 23, or may be mirror-finished by polishing or the like. Alternatively, a white coating film containing a white pigment may be formed.

  The flat plate portion 44 is a portion formed flat on the substantially same plane as the flange 45. It is preferable that the flat plate portion 44 does not bulge downward below the flange 45. In the present embodiment, a step is formed between the flat plate portion 44 and the flange 45, and the flat plate portion 44 is slightly recessed upward from the flange 45. It is. The flat plate portion 44 has, for example, a substantially semicircular shape or a substantially elliptical shape in a bottom view. The second opening 42 is formed at the center of the flat plate portion 44. Further, the flat plate portion 44 may be formed with a plurality of openings 47a, 47b, 47c. The openings 47a, 47b and 47c respectively expose, for example, a display unit for displaying the charge state of the battery 60, a press-type switch for starting the inspection mode, and a receiver for receiving an infrared signal of the inspection remote controller.

  In the luminaire 10, the centers of the first opening 41 and the second opening 42 are located at positions shifted from the center α of the cover 40 in a bottom view of the cover 40. The center of the translucent cover 24 is approximately located at the center of the first opening 41, and the center of the translucent cover 34 is approximately located at the center of the second opening 42. In the present embodiment, since the optical axis of each light source unit passes through the center of each translucent cover, in other words, each of the light source units is disposed with the position of the optical axis shifted from the center α of the cover 40 . In the example shown in FIG. 4, the end of the translucent cover 24 is located at the center α of the cover 40.

  As shown in FIG. 4, the optical axis of each light source unit is arranged offset from the center α in the bottom view of the lighting device 10, thereby easily securing the installation space of each light source unit without increasing the size of the lighting device 10. it can. In addition, it is preferable that a part of light emission surface of the main light source unit 20 (translucent cover 24) be located at the center α.

  On the other hand, as in the lighting apparatus 10X illustrated in FIG. 6, in the bottom view of the cover 40X, the center of the first opening 41X exposing the translucent cover 24 of the main light source unit 20 coincides with the center β of the cover 40X. It may be In the lighting device 10X, the area ratio of the recess 43X to the flat portion 44X is, for example, 70:30 to 90:10 in a bottom view of the cover 40X. By arranging the optical axis of the main light source unit 20 at the center β in the bottom view of the lighting device 10X, it becomes easy to realize the same illumination as a general lighting device including only the main light source unit. In the flat plate portion 44X, an opening may be formed to expose a display portion or the like for displaying the charged state of the battery 60.

  As described above, according to the lighting devices 10 and 10X, since the main light source unit 20 and the auxiliary light source unit 30 are provided, one unit can realize normal illumination and emergency lighting. By using the luminaires 10 and 10X, for example, the burden of construction can be greatly reduced.

  DESCRIPTION OF SYMBOLS 10 luminaire, 20 main light source unit, 21, 31 light source module, 22 base part, 23 reflecting member, 24, 34 translucent cover, 25, 35 supporting member, 26 insertion hole, 30 sub light source unit, 32 lower holder, 33 upper holder, 36 inspection lever, 37 connection portion, 40 cover, 41 first opening, 42 second opening, 43 recessed portion, 44 flat plate portion, 45 flange, 46, 47a, 47b, 47c opening, 48 spring fixing portion, Reference Signs List 50 fixed member, 51 top plate, 52 fixed piece, 53 annular frame, 54 spring locking portion, 55 claw portion, 56 support frame, 60 battery, 61 battery holder, 70 lighting control unit

Claims (7)

A ceiling-mounted lighting fixture,
Main light source unit,
A secondary light source unit,
A circular-shaped cover in a bottom view that covers a part of the main light source unit and the sub light source unit;
Lighting equipment. The cover is formed with a first opening for exposing a part of the main light source unit and a second opening for exposing a part of the auxiliary light source unit.
The lighting fixture according to claim 1, wherein centers of the first opening and the second opening exist at a position offset from the center of the cover in a bottom view of the cover.   The lighting fixture according to claim 1, wherein the side light source unit is disposed at a lower end side of the fixture than the main light source unit. The light source of the auxiliary light source unit is an emergency light source which lights up in an emergency, and
The lighting fixture according to any one of claims 1 to 3, further comprising a battery that supplies power to the light source of the auxiliary light source unit. It further comprises a lighting control unit respectively connected to the main light source unit and the sub light source unit,
The lighting fixture according to any one of claims 1 to 4, wherein the sub light source unit is disposed closer to the lighting control unit than the main light source unit.   The lighting fixture according to any one of claims 1 to 5, wherein the light source of the main light source unit is configured to be exchangeable.   The lighting fixture according to any one of claims 1 to 6, wherein at least one of the main light source unit or the sub light source unit is movable.

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