JP5887563B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture whose irradiation direction can be changed.

  2. Description of the Related Art Conventionally, downlights having a swing mechanism are known for irradiating not only a direct downward direction but also a vertical plane with a ceiling-embedded lighting fixture. For example, in the luminaire 100 shown in FIG. 5 described in Patent Document 1, a lamp 102 is accommodated inside a cylindrical main body frame 101, and the lamp 102 can freely tilt the center of the lamp. A lamp and a reflector are housed inside the lamp 102, and the irradiation direction can be adjusted by rotating the lamp 102 around the horizontal axis by a swing mechanism (not shown) with respect to the main body frame 101.

Japanese Utility Model Publication No. 63-101411 (FIG. 1)

  As the lighting device 100 is rotated by the swing mechanism, light is blocked by the main body frame 101 (so-called kicking). It also led to waste of electricity.

  The present invention has been made in view of the above situation, and its purpose is to provide a lighting apparatus that can prevent light from being kicked even if the swing angle of the lamp is changed, and can efficiently emit light by reducing waste of emitted light. Is to provide.

Lighting device according to the present invention is entirely embedded in the ceiling, and a lamp having an opening downward, the support shaft perpendicular to the vertical section of the lamp, provided inside of said lamp Rutotomoni, the support shaft An LED module rotatably supported by the LED module , wherein the LED module has a portion in the vertical cross section of the lamp having a reverse bowl shape , and a bowl-shaped inner surface of the portion having the reverse bowl shape. It disposed me along, and, in a state in which the LED module is not rotated, anda plurality of LED located above said support shaft, when the LED module is not rotated in the vertical cross-section of the lamp, The portion of the inverted bowl shape is symmetrical, and when the opening of the lamp is indicated by a line segment parallel to the ceiling in the vertical section of the lamp, The first arrow indicating the direction of the first emitted light emitted from the first LED located on the outer right side in the vertical section of the lamp, and the second emitted light emitted from the second LED located on the outer left side The second arrow indicating the direction of the lamp intersects at a first angle on the line segment indicating the opening of the lamp, and one opening edge of the first arrow and the opening of the lamp And a first margin angle is ensured between each of the second arrow and the other opening edge opposite to the one opening edge of the opening of the lamp. When the first emitted light does not interfere with the one opening edge and the second emitted light does not interfere with the other opening edge and the LED module is rotated, the rotation range of the LED module is restricted. In the state where the LED module is rotated to the maximum, The rotation angle of the LED module from the first margin angle is between one arrow and the one opening edge, and between the second arrow and the other opening edge. A second margin angle of the angle obtained by subtracting the rotation angle of the LED module from the first margin angle is ensured, and a third margin angle of the angle obtained by adding the rotation angle of the LED module to the first margin angle is secured. The emitted light does not interfere with the one opening edge, and the second emitted light does not interfere with the other opening edge .

Further, the present invention is entirely embedded in the ceiling, and a lamp having an opening downward, the support shaft perpendicular to the vertical section of the lamp, provided inside of said lamp Rutotomoni, rotating said support shaft An LED module that is freely supported, and the LED module is disposed along a V-shaped inner surface of a portion in which the shape of the lamp in a vertical cross-section is an inverted V shape and a portion of the inverted V shape. And in a state where the LED module is not rotated, a plurality of LEDs positioned above the support shaft , and when the LED module is not rotated, in the vertical cross section of the lamp, The inverted V-shaped part is a symmetrical shape, and when the opening of the lamp is indicated by a line segment parallel to the ceiling in the vertical cross section of the lamp, A first arrow indicating the direction of the first emitted light emitted from the first LED at the first position on the right side in the vertical section of the tool, and a second position on the left side corresponding to the first position. The second arrow indicating the direction of the second emitted light emitted from a certain second LED intersects at a first angle on a line segment indicating the opening of the lamp, and the first arrow Between the second arrow and the other opening edge of the opening opposite to the one opening edge. The first margin angle is ensured, the first outgoing light does not interfere with the one opening edge, the second outgoing light does not interfere with the other opening edge, and the LED module rotates. The rotation range of the LED module is restricted and the LED module is maximized. In the rolled state, the first margin is not between one of the first arrow and the one opening edge and between the second arrow and the other opening edge. A second margin angle obtained by subtracting the rotation angle of the LED module from the corner is ensured, and a third margin of an angle obtained by adding the rotation angle of the LED module to the first margin angle is secured to either one of them. A corner is secured, the first outgoing light does not interfere with the one opening edge, and the second outgoing light does not interfere with the other opening edge .

Further, the present invention, the support shaft, in the vertical cross section of the lamp through a bisection point of a line segment parallel to the ceiling of an aperture portion of the lamp, and perpendicular to the vertical section of the lamp a shall be arranged so that.

  The lighting apparatus according to the present invention can prevent the light from being kicked even if the swing angle of the lamp is changed, and can reduce the waste of the emitted light and perform efficient irradiation.

The side view which notched the lamp of the lighting fixture which concerns on this invention The side view in which the LED module shown in FIG. 1 was rotated The side view which notched the lamp of the lighting fixture which concerns on other embodiment The side view in which the LED module shown in FIG. 3 was rotated (A) is a side view of a conventional lighting fixture in which the lamp can be freely tilted, and (B) is a side view at the time of tilting.

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a side view in which a lamp of a lighting fixture according to the present invention is cut out, and FIG. 2 is a side view in which the LED module shown in FIG. 1 is rotated.
The lighting fixture 10 is attached to a ceiling 11 and has a lamp 13 having an opening 12 formed below. The lamp 13 is formed in a cylindrical shape whose diameter is expanded in the lower part in the present embodiment, but may be rectangular. A flange (not shown) is formed on the outer periphery of the opening 12 so that the periphery of the mounting hole 14 formed in the ceiling 11 is hidden. A plurality of mounting springs (not shown) whose front ends are free ends are provided on the outer periphery of the lamp 13 so as to protrude at equal intervals in the circumferential direction, and the mounting springs sandwich the peripheral edge of the mounting hole 14 between the flanges. 10 is held on the ceiling 11.

  A support shaft 15 and an LED module 16 are provided inside the lamp 13. The support shaft 15 rotatably supports the LED module 16. The support shaft 15 is orthogonal to the vertical cross section of the lamp 13. Here, the vertical section is the same plane as the paper surface of FIG. Accordingly, the support shaft 15 is in a direction perpendicular to the paper surface of FIG. For example, the support shaft 15 protrudes from the front and back of the paper surface of FIG. A bearing recess (not shown) that is externally attached to the support shaft 15 is fixed to the LED module 16. The LED module 16 is rotatably supported by the support shaft 15 through the bearing recess.

  In the present embodiment, the support shaft 15 is located at a point that bisects the horizontal segment 17 when the opening 12 in the vertical section of the lamp 13 is the horizontal segment 17 (a bisection point). Thereby, the area of the rotation locus in the LED module 16 for changing the illumination range is reduced, and the lamp 13 can be made compact. On the other hand, for example, when the support shaft 15 exists above the LED module 16, the area of the rotation locus in the LED module 16 for changing the illumination range becomes large.

  The LED module 16 may be provided with a lighting power supply device (not shown) that supplies power for lighting to the LED 18. The lighting power supply device has a power supply terminal block and is electrically connected to an external commercial power supply. Further, a heat dissipation fin (not shown) for radiating the heat of the LED 18 may be provided on the outer periphery of the LED module 16.

  In the present embodiment, the LED module 16 is formed in an inverted bowl shape in the vertical cross section. In the LED module 16, a plurality of LEDs 18 are arranged along the bowl-shaped inner surface 19. The LED 18 is mounted on a mounting board (not shown). The mounting board is fixed to the module body via a heat conductive sheet. The heat transferred from the mounting board to the module body via the heat conductive sheet is radiated from the heat radiating fins. A heat conductive sheet contains the filler which consists of fillers, such as a silica and an alumina, and consists of a resin sheet which becomes low viscosity at the time of a heating. An LED chip is provided on the surface of the mounting substrate via a submount that is an insulating layer. As the LED chip, a GaN-based blue semiconductor light emitting element that emits blue light (λ≈400 to 460 nm) is preferably used. In the LED chip, an electrode is connected to a circuit portion provided on a submount or a mounting substrate with a wire. The LED chip and the wire are covered with a thin resin made of silicone resin. The thin resin is further covered with a phosphor cap through the air layer.

  For example, when the LED 18 has a white specification, the phosphor cap is formed by dispersing a green phosphor, a yellow phosphor, and a red phosphor in a translucent silicone resin and then curing. With this phosphor cap, part of the blue light from the LED chip is converted into green light (λ≈540-565 nm), yellow light (λ≈560-580 nm), red light (λ≈680-720 nm), These lights mix to produce white light.

  The light emitted from the LED module 16 intersects at the opening 12 because the LEDs 18 are arranged along the bowl-shaped inner surface 19, and the illumination lights on the outer sides form an irradiation angle α1 within a predetermined range. ing. In addition, the rotation range of the LED module 16 around the support shaft 15 is restricted by a predetermined rotation angle by a stopper (not shown). As shown in FIG. 2, this rotation angle is set at a rotation angle at which the outside illumination light does not interfere with the opening edge 20 of the opening 12.

Next, the effect | action of the lighting fixture 10 which has the said structure is demonstrated.
In the lighting apparatus 10 having the above-described configuration, when the LED 18 is driven, the light emitted from the right LED 18 of the bowl-shaped inner surface 19 passes through the opening 12 and is irradiated to the left irradiation target, and is emitted from the left LED 18. The incident light passes through the opening 12 and is irradiated to the irradiation object on the right side. That is, the emitted light from the left and right of the LED module 16 intersects. As a result, on each of the left and right sides of the lamp 13, a margin angle θ1 (see FIG. 1) obtained by reducing the irradiation angle is provided between the outer illumination light that forms an irradiation angle within a predetermined range and the opening edge 20 of the opening 12. As shown in FIG. 2, the LED module 16 can be rotated without causing kicking.

  On the other hand, for example, in a configuration according to a comparative example in which a plurality of LEDs 18 are arranged on a plane connecting both ends of the bowl-shaped inner surface 19 of the LED module 16 (a plane parallel to the horizontal line segment 17), the emitted light from the right LED 18 is on the right side. The left irradiation target is irradiated with the emitted light from the left LED 18. For this reason, even at a slight rotation angle, the left and right outer illumination lights immediately interfere with the opening edge 20 of the opening 12 and are kicked.

Next, the lighting fixture 21 by other embodiment which concerns on this invention is demonstrated.
FIG. 3 is a side view in which a lamp of a lighting fixture 21 according to another embodiment is cut out, and FIG. 4 is a side view in which the LED module 22 shown in FIG. 3 is rotated.
A lighting fixture 21 according to this embodiment includes a lamp 13 that is attached to the ceiling 11 and has an opening 12 below, a support shaft 15 that is orthogonal to the vertical cross section of the lamp 13, and a shape in the vertical cross section that is provided inside the lamp 13. Are formed in an inverted V-shape, and the emitted light from the LEDs 18 along the V-shaped inner surface 23 intersects at the opening 12 so that the illumination lights outside each other form an irradiation angle α2 within a predetermined range and the outside illumination light is the opening. The LED module 22 is rotatably supported on the support shaft 15 at a rotation angle that does not interfere with the 12 opening edges 20. The V-shaped inner surface 23 of the LED module 22 is different from the above-described embodiment. Other configurations are the same as those of the lighting fixture 10 described above.

  In the LED module 22, the module main body 24 includes two flat plate portions 25. The flat plate portion 25 has a V shape with a sandwich angle therebetween. In each flat plate portion 25, a plurality of LEDs 18 are arranged along the V-shaped inner surface 23. Accordingly, emitted light with a predetermined irradiation angle is emitted from one flat plate, and illumination light from the left and right flat plate portions 25 intersects at the opening 12 of the lamp 13.

Next, the operation of the lighting fixture 21 having the above configuration will be described.
Also in this lighting fixture 21, when the LED 18 is driven, light emitted from, for example, the right LED 18 on the V-shaped inner surface 23 passes through the opening 12 and is irradiated to the left irradiation target, and is emitted from the left LED 18. The incident light passes through the opening 12 and is irradiated to the irradiation object on the right side. Therefore, the emitted light from the left and right of the LED module 22 intersects. Thereby, in each of the left and right sides of the lamp 13, a margin angle θ2 obtained by reducing the irradiation angle is ensured between the outside illumination light forming the irradiation angle in a predetermined range and the opening edge 20 of the opening portion 12, and FIG. As shown, the LED module 22 can be rotated without causing kicking.

  Therefore, according to the lighting fixture 10 and the lighting fixture 21 which concern on this embodiment, even if the swing angle of the lamp 13 is changed, the kick of light can be prevented. As a result, the illumination direction can be changed, and the waste of the emitted light can be reduced to efficiently illuminate the illumination light.

  In the above-described embodiment, the configuration in which the support shaft 15 is specifically provided has been described as an example. However, the support device 15 may be omitted in the lighting fixture according to the present invention. In this case, if the LED module 16 or the LED module 22 is provided with guide means that moves in the circumferential direction with the position of the support shaft 15 as the rotation center, the LED module 16 or the LED module 22 can be operated in the same manner as described above.

DESCRIPTION OF SYMBOLS 10,21 Lighting fixture 11 Ceiling 12 Opening part 13 Lamp 15 Support axis 16 LED module 17 Horizontal line segment 18 LED
19 bowl-shaped inner surface 20 opening edge 23 V-shaped inner surface

Claims (3)

A lamp that is entirely embedded in the ceiling and has an opening below;
A spindle perpendicular to the vertical section of the lamp,
Rutotomoni provided inside the lamp, the LED module that is rotatably supported on the support shaft,
Equipped with,
The LED module
A portion in which the shape of the lamp in the vertical cross section is an inverted Mitake shape ;
It disposed me along the bowl-shaped inner surface of the part which is the inverse control bowl shape, and, in a state in which the LED module is not rotated, a plurality of LED located above said support shaft,
Have
If the LED module is not rotated,
In the vertical cross-section of the lamp, the portion that is the reverse bowl shape is a symmetrical shape,
When the opening of the lamp is indicated by a line segment parallel to the ceiling in the vertical cross section of the lamp, the first LED located outside the right side of the vertical cross section of the lamp is emitted from the plurality of LEDs. The first arrow indicating the direction of the first emitted light and the second arrow indicating the direction of the second emitted light emitted by the second LED located on the left outer side indicate the opening of the lamp. Intersect at a first angle on the line segment shown,
And between the first arrow and one opening edge of the opening of the lamp, and the other of the second arrow and the opening of the lamp opposite to the one opening edge. A first margin angle is ensured between each of the opening edges, the first outgoing light does not interfere with the one opening edge, and the second outgoing light does not interfere with the other opening edge. Without
When the LED module is rotated,
In a state where the rotation range of the LED module is restricted and the LED module is rotated to the maximum, the second arrow and the other opening edge are between the first arrow and the one opening edge. A second margin angle obtained by subtracting the rotation angle of the LED module from the first margin angle is ensured in one of the two, and the first margin angle is provided in either one of A third margin angle, which is the angle obtained by adding the rotation angle of the LED module, is ensured, the first emitted light does not interfere with the one opening edge, and the second emitted light does not interfere with the other opening edge. Lighting equipment that does not interfere with the light. A lamp that is entirely embedded in the ceiling and has an opening below;
A spindle perpendicular to the vertical section of the lamp,
Rutotomoni provided inside the lamp, the LED module that is rotatably supported on the support shaft,
Equipped with,
The LED module
A portion in which the shape of the lamp in the vertical cross section is an inverted V shape ;
Disposed me along the V-shaped inner face of the portion is the inverted V-shape and, in a state in which the LED module is not rotated, a plurality of LED located above said support shaft,
Have
If the LED module is not rotated,
In the vertical cross section of the lamp, the inverted V-shaped portion is a symmetrical shape,
When the opening of the lamp is indicated by a line segment parallel to the ceiling in the vertical cross section of the lamp, the first LED at the first position on the right side of the vertical cross section of the lamp among the plurality of LEDs. The first arrow indicating the direction of the first emitted light emitted by the first LED and the second arrow indicating the direction of the second emitted light emitted by the second LED at the second position corresponding to the first position on the left side The two arrows intersect at a first angle on the line segment indicating the opening of the lamp,
And between the first arrow and one opening edge of the opening of the lamp, and the other of the second arrow and the opening of the lamp opposite to the one opening edge. A first margin angle is ensured between each of the opening edges, the first outgoing light does not interfere with the one opening edge, and the second outgoing light does not interfere with the other opening edge. Without
When the LED module is rotated,
In a state where the rotation range of the LED module is restricted and the LED module is rotated to the maximum, the second arrow and the other opening edge are between the first arrow and the one opening edge. A second margin angle obtained by subtracting the rotation angle of the LED module from the first margin angle is ensured in one of the two, and the first margin angle is provided in either one of A third margin angle, which is the angle obtained by adding the rotation angle of the LED module, is ensured, the first emitted light does not interfere with the one opening edge, and the second emitted light does not interfere with the other opening edge. Lighting equipment that does not interfere with the light. In the lighting fixture of Claim 1 or Claim 2,
The support shaft is disposed so as to pass through a bisector of a line segment parallel to the ceiling indicating the opening of the lamp in a vertical section of the lamp and to be perpendicular to the vertical section of the lamp. Lighting equipment.

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