JP4400478B2 - lighting equipment - Google Patents

Description

  The present invention relates to an embedded lighting fixture for an inclined ceiling such as a downlight.

  In the conventional lighting fixtures of this type, there are problems such as (1) irradiation in the direction directly below the fixture, (2) suppressing glare, and (3) responding flexibly to the angle of the inclined ceiling. .

  In order to solve the problem (1), in the first conventional example, as shown in FIG. 9, the shape of the reflecting plate 100 is changed to reflect light from the light source 101 as directly as possible under the fixture.

  However, in the first conventional example, when the angle of the inclined ceiling changes, the direct light distribution cannot be satisfied, and the shape of the reflecting plate needs to be changed. Moreover, since the lamp position is close to the opening of the reflector, it is easy to feel dazzling.

  In order to solve the problem (2), in the second conventional example (see, for example, Patent Document 1), the front panel is tiltably disposed below the lamp embedded in the ceiling. According to the second conventional example, it is possible to suppress glare by the front panel, but it is not possible to satisfy the light distribution in the direct downward direction, and a special reflector is necessary. In order to solve the problem (3) in the second conventional example, it is necessary to change the shape of the reflector.

  In order to solve the above problem (3), in the third conventional example (see, for example, Patent Document 2), the lamp is rotatably disposed in the embedded hole of the inclined ceiling. However, a gap is generated between the lamp and the frame provided in the embedding hole, and the appearance is poor.

In order to solve the above problem (3), in the fourth conventional example (see, for example, Patent Document 3), a lamp is rotatably attached to a cylindrical frame attached to an inclined ceiling. However, it was difficult for this lighting fixture to suppress glare.
JP 2002-251913 Japanese Utility Model Publication No. 5-27912 Japanese Utility Model Publication No. 6-31021

  Accordingly, an object of the present invention is to provide a lighting fixture that irradiates light directly below the fixture when mounted on an inclined ceiling, can flexibly cope with the angle of the inclined ceiling, suppresses glare, and does not impair the appearance. That is.

A lighting fixture according to the present invention has a cylindrical shape having both a lower opening and an upper opening as both ends, and is positioned at a predetermined interval above the frame, and the frame inserted into the embedding hole of the inclined ceiling. A lamp having a light-emitting part and having a shaft that rotatably holds the light-emitting part in a vertical plane including a tilt direction of the inclined ceiling, the light-emitting part being located near the upper opening ; A cylindrical cover disposed between the frame body and an instrument body attached to the inclined ceiling to hold the frame body and the shaft;
The lamp has an inverted U-shaped arm that holds the light-emitting portion inside, the shaft is provided at both ends of the arm, and the frame has a smaller upper opening than the lower opening, and the upper opening has a shape that spreads toward the lower opening of parts, and the upper opening is slanted its inclined direction the inclined roof with respect to the lower opening Ri opposite der the direction inclined with respect to a horizontal plane, the The cylindrical cover is attached to the front side of the lamp so as to cover the upper opening larger than the upper opening of the frame.

  The said structure WHEREIN: The said frame is a substantially truncated cone shape.

  The said structure WHEREIN: The said upper opening part and the said lower opening part are perfect circles.

  The said structure WHEREIN: The said axis | shaft is located in the same surface as the opening surface of the said upper opening part.

  The said structure WHEREIN: It has a top plate which covers the upper direction of the said lamp.

According to the lighting apparatus of the present invention, in the lighting apparatus used by being embedded in an inclined ceiling, the lamp can be rotated, so that light distribution in the direction directly below the apparatus can be achieved regardless of the inclination angle of the ceiling. Since the body and the lamp are spaced apart from each other, it is possible to reduce glare, and since the lamp is located above the frame, the appearance is not impaired as in the prior art. By providing a cover between the light emitting part and the frame, it is possible to shield the instrument internal parts and improve the appearance quality.

  When the frame is conical, the processability of the frame is facilitated and the cost can be reduced.

  If both the openings of the frame are made into a perfect circle, the appearance quality can be improved.

  When the position of the shaft is arranged on the same plane as the upper opening, it is possible to optimally set the movable range of the lamp and the size of the upper opening, thereby reducing the instrument size and improving the appearance quality.

  By disposing the top plate covering the upper part of the lamp, it is possible to prevent the heat insulating material applied to the back of the ceiling from obstructing the movement of the lamp. It is particularly preferable that the top plate covers the projection surface above the lamp.

  A first embodiment of the present invention will be described with reference to FIGS. That is, the lighting fixture includes a frame 1, a lamp 2, and a fixture body 3.

  The frame 1 is a cylindrical body having a lower opening 4 and an upper opening 5, and has an inner peripheral surface as a reflecting surface. In this case, the upper opening 5 is smaller than the lower opening 4 and is inclined at a certain angle in the direction opposite to the direction in which the inclined ceiling 7 is inclined. The overall shape has a shape that widens from the upper opening 5 to the lower opening 4, for example, a substantially truncated cone shape. The upper opening 5 and the lower opening 4 are preferably perfect circles. The frame 1 forms a collar 6 on the outer periphery of the edge of the lower opening 4 and is inserted into the embedding hole 21 of the inclined ceiling 7, and the collar 6 is locked to the lower surface of the inclined ceiling 7. The frame body 1 has a locking portion 32 that receives a frame mounting spring 8 described later.

  The lamp 2 has a lamp socket 9, a lamp 10 serving as a light emitting unit mounted on the lamp socket 9, a socket base 11 held by the lamp socket 9, and an inverted U-shape that holds the socket base 11 at an intermediate portion. The arm 12 has both ends extending to both sides of the lamp 10 and the movable shaft 13 fixed to both ends of the arm 12. The lamp 10 uses a dichroic light bulb, and it is possible to ensure an appropriate direct light distribution without light distribution control by another component. The movable shaft 13 is disposed in the vicinity of the upper opening 5, preferably in the same plane as the opening surface of the upper opening 5, so that the lamp 10 can rotate in a vertical plane including the inclination direction of the inclined ceiling 7. Arranged in the direction. A fixed interval is provided between the lamp 10 of the lamp 2 and the frame 1, and a cylindrical cover 20 is disposed at that position and attached to the front side of the lamp 2.

  The instrument body 3 includes an auxiliary frame 14 disposed on the collar 6 of the frame body 1, a pair of support columns 15 erected on the auxiliary frame 14, and a top plate 16 attached to the upper ends of the pair of support columns 15. And have.

  The auxiliary frame 14 is attached to the base end portion of the frame mounting spring 8, and the frame 1 is held by locking the bent portion at the distal end to the locking portion 32. The movable shaft 13 is attached to the attachment piece 22 of the auxiliary frame 14 and is fastened and fixed to the attachment piece 22 by a nut 23. As a result, the lamp 2 can be rotated around the movable shaft 13 by loosening the nut 23.

The support column 15 has a slit 17. A fixture 18 protrudes from the slit 17, the tip of the fixture 18 is locked to the back surface of the inclined ceiling 7, and the collar 6 of the frame 1 is placed on the lower surface of the inclined ceiling 7. The instrument body 3 is attached to the inclined ceiling 7 in a locked state. By attaching the instrument body 3 to the inclined ceiling 7, the frame body 1 is held in an inserted state in the embedding hole 21 of the inclined ceiling 7. Reference numeral 25 denotes a shielding plate that shields the side opposite to the extending direction of the top plate 16.

  The top plate 16 covers the upper part of the lamp 2 and has a shape that particularly covers the upper projection surface of the lamp. A terminal block 27 is provided at the end of the top plate 16, and a thermal protector 28 is provided on the lower surface of the end of the top plate 16.

  FIG. 5 shows a state in which the lighting apparatus of the first embodiment is applied to the inclined ceiling 7 whose inclination angle with respect to the horizontal plane is 15 degrees. In this case, the lamp 2 is rotated so as to be in a vertical posture.

  FIG. 6 shows a state in which the lighting apparatus of the first embodiment is applied to the inclined ceiling 7 having an inclination angle of 35 degrees with respect to the horizontal plane. Also in this case, the lamp 2 is rotated so as to be in a vertical posture.

  A second embodiment of the present invention is shown in FIG. This lighting fixture has a structure in which the frame body 1 is separated into a frame portion 1a having a collar 6 and a reflecting plate portion 1b. It has an inward flange 30 at the upper end of the frame part 1a, an outer collar 31 to be engaged with the collar 30 at the lower end of the reflector 1b, and the reflector 1b is held by the frame mounting spring 8. Yes.

  A third embodiment of the present invention is shown in FIG. This luminaire shows an example in which the frame 1 is square.

It is sectional drawing of the inclination ceiling construction state of 1st Embodiment of this invention. It is sectional drawing of a frame. It is the perspective view which looked at the lighting fixture from upper direction. It is the perspective view which looked at the lighting fixture from the downward direction. It is sectional drawing of the inclination ceiling construction state of inclination-angle 15 degree | times. It is sectional drawing of the inclination ceiling construction state of inclination-angle 35 degree | times. It is sectional drawing of the inclined ceiling construction state of 2nd Embodiment. It is the perspective view seen from the downward direction of 3rd Embodiment. It is sectional drawing of the 1st prior art example.

Explanation of symbols

1 frame
2 lights
3 Instrument body
4 Lower opening
5 Upper opening 7 Inclined ceiling
13 Axis 20 Cover 16 Top plate
21 Embedded hole

Claims (5)

The light emitting unit has a cylindrical body having both a lower opening and an upper opening at both ends and is inserted into an embedding hole of an inclined ceiling, and a light emitting part positioned above the frame at a predetermined interval. A lamp having a shaft rotatably holding in a vertical plane including the tilt direction of the tilted ceiling, and the shaft is located near the upper opening , and between the light emitting unit and the frame A cylindrical cover disposed; and an instrument body that is attached to the inclined ceiling and holds the frame and the shaft,
The lamp has an inverted U-shaped arm that holds the light-emitting portion inside, the shaft is provided at both ends of the arm, and the frame has a smaller upper opening than the lower opening, and the upper opening has a shape that spreads toward the lower opening of parts, and the upper opening is slanted its inclined direction the inclined roof with respect to the lower opening Ri opposite der the direction inclined with respect to a horizontal plane, the The tubular cover is a lighting fixture attached to the front side of the lamp so as to cover the upper opening larger than the upper opening of the frame .   The lighting fixture according to claim 1, wherein the frame has a substantially truncated cone shape.   The lighting apparatus according to claim 1, wherein the upper opening and the lower opening are perfect circles.   The lighting fixture according to claim 1, wherein the axis is located on the same plane as the opening surface of the upper opening. The lighting fixture of Claim 1 which has a top plate which covers the upper direction of the said lamp .

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