JP6004722B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device, and more particularly to a lighting device having an air conditioning return.

  In recent years, high-rise buildings and intelligent buildings that have become more complex and diversified have adopted system ceilings from the viewpoints of ease of construction, comfort, economy, safety, and layout flexibility. This system ceiling is constructed by installing a metal T-bar (framework) in a lattice shape on the ceiling and placing a ceiling finishing material on the installed T-bar.

  Moreover, in such system ceilings, there is a strong demand for a compact layout that integrates lighting equipment with other equipment such as other sprinklers, air conditioners, speakers, and emergency lighting equipment. Lighting devices with air conditioning returns have also been developed.

  As a lighting device for the system ceiling installed on such a system ceiling, for example, the light source unit is housed in a box-shaped main body frame, and a gap as an air conditioning return is provided between the light source unit and the main body frame, A lighting device is disclosed in which a ventilation hole is provided in the upper plate of the main body frame so that air flowing in from the gap flows to the ceiling side through the ventilation hole (see Patent Document 1).

JP 2010-198859 A

  However, in the lighting device disclosed in Patent Document 1, the power supply unit is provided in the middle of the air flow path constituted by the gap and the vent hole, so that the gap and the vent hole are separated from each other. However, due to restrictions on the shape or size of the lighting device or the installation location of the lighting device, for example, if the position of the power supply unit has to be changed, etc. There is a possibility that the back of the ceiling can be seen through the vent when looking through the gap with the lighting device installed.

  This invention is made | formed in view of such a situation, and it aims at providing the illuminating device from which a ceiling back is not visually recognized, ensuring the flow path of air.

The lighting device according to the present invention is a lighting device including a main body portion and a light emitting surface provided on the front surface of the main body portion, the first opening provided on the front surface, and the first of the back surface of the main body portion. A second opening provided at a position displaced from a position facing the one opening, and a flow path communicating the first opening and the second opening with respect to the opening surface of the first opening; A shielding plate for blocking the field of view of the second opening from the first opening , a light source having the light emitting surface and forming a box, and A power supply unit that is disposed between the rear surface and the opposite surface of the light source unit opposite to the light emitting surface, and that faces the side edge of the shielding plate on the second opening side. And a power source cover disposed in a direction orthogonal to the opposite surface, and a part of the flow path is connected to the shielding plate and Gap between the serial opposite surface, as well as the side edge and wherein the tear Rukoto formed by a gap between the power supply unit cover.

  In the present invention, the first opening provided on the front surface of the main body portion on which the light emitting surface is disposed and the first opening portion on the back surface (surface opposite to the front surface) of the main body portion are displaced from the position facing each other. The second opening provided at the position and the flow path communicating the first opening and the second opening are arranged so as to be substantially parallel to the opening surface of the first opening, A shielding plate for shielding the field of view of the second opening from the first opening. The position facing the first opening is, for example, a position where most of the opening overlaps when the first opening is projected perpendicularly to the opening surface. For example, the shielding plate can be disposed along the flow path so that the thickness direction is substantially orthogonal to the air flow direction so as not to hinder the flow of air in the flow path. Further, the shielding plate can be arranged so that the second opening does not enter the field of view when viewed from the first opening. Even when a shielding plate is provided so as to block the field of view of the second opening from the first opening by displacing the positions of the first opening and the second opening, from the first opening to the second opening. Can be secured. Thereby, even when it is necessary to provide the first opening and the second opening close to each other, it is possible to prevent the ceiling outside the second opening from being visually recognized while securing the air flow path. Can do.

Lighting device according to the present invention, the pre-Symbol first opening, is provided with a vicinity of the light-emitting surface, the second opening, and wherein the you have oppositely arranged on the opposite surface.

  In the present invention, the light source unit is a box having a light emitting surface, and the first opening is provided in the vicinity of the light emitting surface. The second opening is provided on the surface opposite to the light emitting surface of the light source unit. Since the first opening is provided in the vicinity of the light emitting surface and the second opening is opposed to the surface opposite to the light emitting surface, the positions of the first opening and the second opening can be displaced. In addition, even when a shielding plate is provided so as to block the field of view of the second opening from the first opening, a flow path from the first opening to the second opening can be secured.

Lighting device according to the present invention, the shielding plate, in a direction perpendicular to the opening surface, the located between the anti facing the second opening, in a direction parallel to the opening surface, the first It arrange | positions so that it may be located between an opening part and a 2nd opening part.

  In the present invention, the shielding plate is disposed so as to be positioned between the surface opposite to the light emitting surface of the light source unit and the second opening in the direction perpendicular to the opening. That is, when the position of the shielding plate, the opposite surface, and the second opening is projected on a virtual straight line perpendicular to the opening surface, the position of the shielding plate exists between the opposite surface and the second opening. It is. And the shielding board is arrange | positioned so that it may be located between a 1st opening part and a 2nd opening part in the direction parallel to an opening surface. That is, when the positions of the shielding plate, the first opening, and the second opening are projected on a virtual straight line that is horizontal to the opening surface, the position of the shielding plate exists between the first opening and the second opening. That's what it means.

  By arranging the shielding plate between the surface opposite to the light emitting surface of the light source unit and the second opening in the direction perpendicular to the opening surface, the surface is defined by the surface opposite to the light source unit and the back surface of the main body unit. Since the shielding plate is provided along the direction of the air flow path, obstruction of the air flow can be prevented. Further, by arranging the shielding plate between the first opening and the second opening in a direction parallel to the opening surface in a state where the positions of the first opening and the second opening are displaced. Even when a shielding plate is provided so as to block the field of view of the second opening from the first opening, a flow path from the first opening to the second opening can be secured.

  The illuminating device according to the present invention includes a bent portion bent toward the first opening at a side edge of the shielding plate on the first opening side.

  In the present invention, the side edge of the shielding plate on the first opening side is provided with a bent portion bent toward the first opening. When the air flowing in from the first opening flows toward the shielding plate, the bent portion is provided along the air flow, so that the strength of the shielding plate can be increased without obstructing the air flow.

  The illuminating device according to the present invention includes a bent portion bent toward the second opening at a side edge of the shielding plate on the second opening side.

  In the present invention, the side edge of the shielding plate on the second opening side is provided with a bent portion bent toward the second opening. When the air flowing in from the first opening flows toward the shielding plate and flows toward the second opening, since the bent portion is provided along the air flow, the strength of the shielding plate is not disturbed. Can be increased.

Lighting device according to the present invention, the power supply unit, characterized in that the rear, is arranged on the opposite side of the first opening to the second opening.

  In the present invention, a power supply unit that is housed in the main body unit and supplies power to the light source unit is provided. The power supply unit is disposed on the opposite side of the first opening with respect to the second opening on the back surface of the main body. Even if the arrangement position of the power supply unit is changed by disposing the power supply unit on the opposite side of the first opening with respect to the second opening on the back surface of the main body unit, the second opening from the first opening. It is possible to prevent a situation in which the flow path to the opening is blocked by the power supply unit.

  ADVANTAGE OF THE INVENTION According to this invention, it can prevent that a ceiling back is visually recognized, ensuring the flow path of air.

It is a disassembled perspective view which shows an example of a structure of the illuminating device of this Embodiment. It is a front view which shows an example of a structure of the illuminating device of this Embodiment. It is a rear view which shows an example of a structure of the illuminating device of this Embodiment. It is sectional drawing seen from the side surface which shows an example of a structure of the illuminating device of this Embodiment. It is principal part sectional drawing seen from the side surface which shows an example of a structure of the illuminating device of this Embodiment. It is explanatory drawing which shows the visual field range from the vent hole of this Embodiment. It is explanatory drawing which shows the visual field range from the vent hole as a comparative example. It is principal part sectional drawing of the illuminating device which comprises the other structural example of a shielding board. It is principal part sectional drawing of the illuminating device which comprises the other structural example of a shielding board.

  Hereinafter, the present invention will be described with reference to the drawings illustrating embodiments thereof. FIG. 1 is an exploded perspective view showing an example of the configuration of the lighting device 100 of the present embodiment, FIG. 2 is a front view showing an example of the configuration of the lighting device 100 of the present embodiment, and FIG. It is a rear view which shows an example of a structure of the illuminating device 100 of this form, and FIG. 4 is sectional drawing seen from the side which shows an example of a structure of the illuminating device 100 of this Embodiment. The lighting device 100 according to the present embodiment includes a box-shaped main body 10, two light sources 20 in a box housed in the main body 10, and a power supply unit that is housed in the main body 10 and supplies power to each light source 20. 30 and the like.

  The main body 10 can be fixed to a required portion of a T bar provided in a lattice shape on the system ceiling by T bar mounting brackets 81 and 82. Hereinafter, the lighting device 100 will be described as being installed on the system ceiling, but the lighting device 100 according to the present invention is not limited to the system ceiling.

  The main body 10 has a box shape and intersects the outer plates 11 and 11 and the outer plate 11 facing each other so as to surround the rectangular top plate 16 and the top plate 16, and is opposed to each other. The side plates 12 and 12 are provided, and the front (front or back) view is substantially rectangular. An inner plate 13 is provided on the inner side of the main body 10 so as to face each of the outer plates 11. Thus, an opening 15 defined by the side plate 12 and the inner plates 13 and 13 is provided in the central portion of the main body 10.

  For example, facilities such as a sprinkler, an air conditioner, a speaker, and an emergency lighting fixture can be installed in the opening 15.

  One light source 20 is accommodated in one housing 101 defined by the outer plate 11, the side plate 12 and the inner plate 13. The other storage portion 102 defined by the outer plate 11, the side plate 12, and the inner plate 13 stores the other light source unit 20 and the power source unit 30. In the present embodiment, one light source unit 30 is accommodated. For example, when the power consumption of the light source unit 20 is large, the two power source units 30 are accommodated in the respective accommodating units 101 and 102 and required. You may make it supply the electric power of.

  In the accommodating portion 102 in which the power supply portion 30 is accommodated, a plate-shaped power supply cover 14 is provided so as to face the inner plate 13 with an interval substantially the same as the width dimension of the power supply portion 30.

  Rectangular air holes 53 and 53 serving as second openings are provided on the housing 101 side of the top plate 16 of the main body 10, and as second openings on the housing 102 side of the top plate 16. The rectangular vent holes 54, 54 are provided.

  Further, a shielding plate 61 is provided in the accommodating portion 101 to block the view of the vent hole 53 from a vent hole 51 as a first opening described later. Further, a shielding plate 62 is provided in the accommodating portion 102 to block the field of view of the vent hole 54 from a vent hole 52 as a first opening which will be described later.

  The light source unit 20 includes an LED module in which an LED chip as a light source is mounted on a substrate (both not shown), and the LED module is housed in a casing 21 having a rectangular shape when viewed from the front (front view). . On one surface (front surface) of the light source unit 20, a light transmitting plate 22 is provided as a light emitting surface that transmits light from the LED chip.

  The power supply unit 30 includes a power supply circuit that converts an AC voltage into a predetermined DC voltage and supplies necessary power to the LED module, a dimming circuit that controls light emission of the LED chip, and the like.

  Further, as shown in FIG. 2, a rectangular ventilation hole 51 as a first opening is provided between one outer plate 11 and the light source unit 20. In addition, a rectangular air hole 52 serving as a first opening is provided between the other outer plate 11 and the light source unit 20. Each of the vent holes 51 and 52 is provided in the vicinity of the translucent plate 22. The vicinity of the translucent plate 22 is, for example, a distance separated by a dimension about the thickness of the housing 21.

  Further, as shown in FIG. 2, the field of view from the vent hole 51 to the vent hole 53 is shielded by the shielding plate 61 so that the ceiling behind the vent hole 53 cannot be seen. Further, the field of view from the vent hole 52 to the vent hole 54 is shielded by the shielding plate 62 so that the back of the ceiling outside the vent hole 54 cannot be seen.

  As shown in FIG. 4, a flow path 72 that connects the vent hole 52 and the vent hole 54 is formed. More specifically, the flow path 72 is surrounded by the outer plate 11, the top plate 16, the power source cover 14, the casing 21 of the light source unit 20, the opposite surface 23 of the light source unit 20 opposite to the light transmitting plate 22, and the like. It is.

  A shielding plate 62 is disposed in the flow path 72. The shielding plate 62 is arranged along the direction of the flow path 72 and blocks the visual field outside the vent hole 54 from the vent hole 52 without disturbing the flow of air in the flow path 72. More specifically, the shielding plate 62 is between the opposite surface (opposite surface) 23 of the light source unit 20 and the top plate 16 (the rear surface opposite to the front surface of the main body 10), and the opposite surface 23. They are provided substantially in parallel.

  In addition, as shown in FIG. 4, a flow path 71 that connects the vent hole 51 and the vent hole 53 is formed. More specifically, the flow path 71 is surrounded by the outer plate 11, the top plate 16, the inner plate 13, the casing 21 of the light source unit 20, the opposite surface 23 of the light source unit 20 opposite to the light transmitting plate 22, and the like. ing.

  A shielding plate 61 is disposed in the flow channel 71. The shielding plate 61 is arranged along the direction of the flow path 71 and blocks the visual field outside the vent hole 53 from the vent hole 51 without disturbing the air flow in the flow path 71. More specifically, the shielding plate 61 is provided between the opposite surface 23 of the light source unit 20 and the top plate 16 (the rear surface opposite to the front surface of the main body 10) and substantially parallel to the opposite surface 23. is there.

  FIG. 5 is a cross-sectional view of the main part viewed from the side, showing an example of the configuration of the illumination device 100 of the present embodiment. FIG. 5 is an enlarged view of a portion indicated by reference numeral S in FIG. In the following description, the other side of FIG. 4 (the part indicated by reference numeral S) will be described. However, the same applies to one side of FIG. As shown in FIG. 5, the illumination device 100 is opposite to the front surface of the main body 10, the ventilation hole 52 as the first opening provided in the front surface of the main body 10 where the light transmitting plate 22 of the light source unit 20 is disposed. A vent hole 54 as a second opening provided in the top plate 16 (rear surface) on the side, a flow path 72 that connects the vent hole 52 and the vent hole 54, and air in the flow path 72 that is disposed in the flow path 72. A shielding plate 62 for blocking the field of view of the vent hole 54 from the vent hole 52 without hindering the flow of air.

  As shown in FIG. 5, the shielding plate 62 is disposed so as to be positioned between the opposite surface 23 of the light source unit 20 and the ventilation hole 54 in the direction perpendicular to the opening surface of the ventilation hole 52. It is. That is, when the positions of the shielding plate 62, the opposite surface 23 and the ventilation hole 54 are projected on a virtual straight line perpendicular to the opening surface of the ventilation hole 52, the position of the shielding plate 62 is between the opposite surface 23 and the ventilation hole 54. It exists. Further, the shielding plate 62 is disposed so as to be positioned between the vent hole 52 and the vent hole 54 in a direction parallel to the opening surface of the vent hole 52. That is, when the positions of the shielding plate 62, the ventilation holes 52, and the ventilation holes 54 are projected on a virtual straight line that is horizontal to the opening surface of the ventilation holes 52, the position of the shielding plate 62 is between the ventilation holes 52 and 54. It exists.

  For example, the shielding plate 62 can be disposed so that the direction of the plate thickness is substantially orthogonal to the direction of air flow so as not to hinder the flow of air in the flow path 72. More specifically, when the shielding plate 62 has a longitudinal direction as the longitudinal direction of the outer plate 11, a lateral direction as the longitudinal direction of the side plate 12, and a height perpendicular to the translucent plate 22, a plane defined by the longitudinal and lateral directions. By placing the shielding plate 62 so as to be substantially parallel to the air flow direction (for example, within a range of about ± 10 degrees with respect to the front surface or the back surface of the main body 10), the air hits the shielding plate 62. The air resistance generated can be reduced.

  Further, as shown in FIG. 5, the distance between the one end of the shielding plate 62 and the outer plate 11 (symbol A) and the distance between the one end of the shielding plate 62 and the top plate 16 (symbol B) are approximately the same. By doing so, it is possible to prevent the cross-sectional area of the air flowing between the outer plate 11 and the top plate 16 and the shielding plate 62 from changing, and it is possible to prevent the air flow from being hindered.

  Further, as shown in FIG. 5, the interval (reference symbol C) between the other end portion of the shielding plate 62 and the opposite surface 23 of the light source unit 20, and the interval (reference symbol) between the other end portion of the shielding plate 62 and the power source cover 14. D) can be made comparable, so that the cross-sectional area of the air flowing between the casing 21, the opposite surface 23 of the light source 20 and the power source cover 14 and the shielding plate 62 can be kept unchanged. The air flow can be prevented from being obstructed.

  FIG. 6 is an explanatory diagram showing the visual field range from the vent hole 52 of this embodiment, and FIG. 7 is an explanatory diagram showing the visual field range from the vent hole 52 as a comparative example. In FIG. 6 and FIG. 7, the hatched range is the visual field range from the vent hole 52. The example of FIG. 7 shows the visual field range when the shielding plate 62 is not provided. In the example of FIG. 6, the ventilation hole 54 does not enter the visual field range from the ventilation hole 52 by providing the shielding plate 62. That is, the shielding plate 62 is arranged so that the vent hole 54 does not enter the field of view when the inside is viewed from the vent hole 52. On the other hand, in the example of FIG. 7, since the shielding plate 62 is not provided, the vent hole 54 enters the visual field range from the vent hole 52.

  Thereby, even when it is necessary to provide the vent hole 52 and the vent hole 54 close to each other in the direction parallel to the opening surface, the back of the ceiling outside the vent hole 54 can be visually recognized while ensuring the air flow path. Can be prevented.

  The vent hole 52 and the vent hole 54 have the same opening area. More specifically, the opening area of the vent hole 52 and the total area of the opening areas of the two vent holes 54 have the same value. The vent hole 54 is provided at a position displaced from a position facing the vent hole 52 in a direction parallel to the opening surface. Here, the position facing the vent hole 52 is, for example, a position where most of the opening portion overlaps when the vent hole 52 is projected onto the top plate 16 perpendicular to the opening surface.

  Even if the shielding plate 62 is provided between the vent hole 52 and the vent hole 54 so as to block the field of view of the vent hole 54 from the vent hole 52 by displacing the positions of the vent hole 52 and the vent hole 54, the displacement is achieved. It is possible to secure a channel width having a dimension corresponding to the above. Further, by setting the vent holes 52 and 54 to have the same opening area, it is possible to prevent the area of the air-conditioning return (the cross-sectional area of the air flow path) from being narrowed by one opening.

  The vent hole 52 is provided in the vicinity of the edge portion of the translucent plate 22. The ventilation hole 54 is provided on the opposite surface 23 of the light source unit 20 on the opposite side to the light transmitting plate 22. Since the vent hole 52 is provided in the vicinity of the light transmitting plate 22 and the vent hole 54 is provided opposite to the opposite surface 23, the positions of the vent hole 52 and the vent hole 54 can be displaced. Even when the shielding plate 62 is provided so as to block the field of view of the ventilation hole 54 from the outside, a gap can be provided between the outer plate 11 or the power supply cover 14 on the side edge side of the shielding plate 62, A flow path to the port 54 can be secured.

  Further, since the shielding plate 62 is provided substantially in parallel with the opposite surface 23 between the opposite surface 23 of the light source unit 20 and the top plate 16 as the back surface of the main body unit 10, Since the shielding plate 62 is provided along the direction of the air flow path defined by the plate 16, it is possible to prevent the air flow from being hindered.

  The power supply unit 30 is a top plate 16 as a back surface of the main body unit 10, and is disposed on the opposite side of the vent hole 52 with respect to the vent hole 54. Thereby, even when the arrangement position of the power supply unit 30 is changed, as long as the power supply unit 30 is arranged on the opposite side of the ventilation hole 52 from the ventilation hole 52, the ventilation hole 52 is connected to the ventilation hole 54. The situation where the flow path 72 is obstructed by the power supply unit 30 can be prevented.

  FIG. 8 is a cross-sectional view of a main part of the illumination device 100 having another configuration example of the shielding plate 62. As shown in FIG. 8, a bent portion 621 bent toward the vent hole 52 is provided on the side edge of the shielding plate 62 on the vent hole 52 side. That is, one edge of the shielding plate 62 is bent in a substantially L shape.

  When the air flowing in from the vent hole 52 flows toward the shielding plate 62, the bent portion 621 is provided along the air flow, so that the strength of the shielding plate 62 can be increased without obstructing the air flow. .

  FIG. 9 is a cross-sectional view of a main part of an illuminating device 100 including another configuration example of the shielding plate 62. As shown in FIG. 9, a bent portion 622 bent toward the vent hole 54 is provided on the side edge of the shielding plate 62 on the vent hole 54 side. That is, one edge of the shielding plate 62 is bent in a substantially L shape.

  When the air flowing in from the vent hole 52 flows toward the shielding plate 62 and flows toward the vent hole 54, the bent portion 622 is provided along the air flow, so that the shielding plate 62 is not obstructed without obstructing the air flow. Strength can be increased. Note that both bent portions 621 and 622 may be provided. Thereby, intensity | strength can be raised further.

10 Main body 16 Top plate (Back)
20 Light source unit 22 Translucent plate (light emitting surface)
23 Opposite side (opposite side)
30 Power supply 51, 52 Ventilation hole (first opening)
53, 54 Vent (second opening)
61, 62 Shield plate 621, 622 Bent part 71, 72 Flow path

Claims (6)

In a lighting device comprising a main body part and a light emitting surface provided on the front surface of the main body part,
A first opening provided in the front surface;
A second opening provided at a position displaced from a position facing the first opening on the back surface of the main body,
The first opening and the second opening are disposed so as to be substantially parallel to the opening surface of the first opening in the flow path that connects the first opening and the second opening. A shielding plate to block the field of view ,
A light source part having the light emitting surface and forming a box;
A power supply unit disposed between a back surface of the main body unit and an opposite surface opposite to the light emitting surface of the light source unit, and supplies power to the light source unit;
A power source cover disposed opposite to a side edge of the shielding plate on the second opening side and orthogonal to the opposite surface;
With
A portion of the flow path, the shield plate and the gap between the opposite surface, and the illumination device according to the side edge and wherein the tear Rukoto formed by a gap between the power supply unit cover. Before Symbol first opening,
Provided in the vicinity of the light emitting surface;
The second opening is
The lighting device according to claim 1, wherein the lighting device is opposed to the opposite surface . The shielding plate is
In a direction perpendicular to said opening plane, located between the anti facing the second opening,
The lighting device according to claim 2, wherein the lighting device is disposed so as to be positioned between the first opening and the second opening in a direction parallel to the opening surface.   The bending part bent to the 1st opening part is provided in the side edge by the side of the said 1st opening part of the said shielding board, The any one of Claim 1 to 3 characterized by the above-mentioned. Lighting device.   5. The bent portion according to claim 1, further comprising a bent portion bent toward the second opening portion at a side edge of the shielding plate on the second opening portion side. Lighting device. The power supply unit is
6. The lighting device according to claim 2, wherein the lighting device is disposed on the opposite side of the rear surface with respect to the second opening portion from the first opening portion.

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