JPH11273445A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide such a luminaire that an apparatus body can be miniaturized and a swing angle can be made large. SOLUTION: This luminaire is equipped with an apparatus body 1, which can be inserted into a hole 6 formed in a ceiling 5, and with a lamp 2, which has a lamp socket 9 and can be swung into the apparatus body 1, and has such a protrusion 3 that it is protruded to the side direction of the apparatus body 1 as it can be inserted into the hole 6, and that, when the lamp 2 is tilted at the maximum swing angle, the lamp socket 9 can enter its inside, and also has a top board 4 which covers at least the face of the lamp socket 9, where dust adheres.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting device such as a downlight of a variable irradiation direction.

[0002]

2. Description of the Related Art FIG. 5 shows a conventional example. That is, this lighting fixture has an illumination main body 52 that can be inserted into a hole 51 provided in a ceiling 50 and a lamp 54 that has a lamp socket 53 and is swingably provided in the appliance main body 52. It is a variable lighting fixture. 55 is a ceiling mounting spring, 56 is a light part rotating shaft, and 57 is a power supply line.

[0003]

However, in this luminaire, when the size of the luminaire is reduced, the inner diameter of the luminaire main body 52 is reduced, and the angle A with respect to a vertical line at which the upper part 54a of the luminaire 54 hits the inner surface of the luminaire is defined as the luminaire 54. Of the lamp 54, the swing angle of the lamp 54 becomes small. On the other hand, if the swing angle of the lamp 54 is increased, the size of the fixture increases.

Accordingly, it is an object of the present invention to provide a lighting fixture that can reduce the size of the fixture body and increase the swing angle.

[0005]

According to a first aspect of the present invention, there is provided a lighting fixture having a fixture body insertable into a hole provided in a ceiling, and a lamp socket having a lamp socket and swingably provided in the fixture body. The lamp socket has a protruding portion that can be inserted inside when the lamp is inclined at the maximum swing angle by projecting to the side of the appliance main body so that it can be inserted into the hole, and at least the lamp socket has It has a top plate portion that covers a surface to which dust adheres.

According to the first aspect of the present invention, since the projection which can be inserted into the hole in the ceiling is provided, the lamp socket of the lamp enters the inside of the projection to increase the swing angle of the lamp. And the size of the instrument body can be reduced. In addition, since the lamp socket is provided with the top plate that covers the surface to which the dust adheres, the dust does not adhere to the high-temperature portion of the lamp socket, so that the burning of the dust due to heat can be prevented.

According to a second aspect of the present invention, in the lighting apparatus according to the first aspect, the lamp is rotatable in a horizontal direction, and the projection and the top plate rotate integrally with the lamp. According to the lighting fixture of claim 2, claim 1 is provided.
In addition to the same effects as described above, the horizontal rotation angle can be increased because the projection and the top plate rotate with the lamp.

[0008]

DETAILED DESCRIPTION OF THE PREFERRED EMBODIMENTS A first embodiment of the present invention will be described with reference to FIGS. That is, this lighting fixture has the fixture main body 1, the lighting fixture 2, the projecting portion 3, and the top plate portion 4. The appliance body 1 has a configuration that can be inserted into a hole 6 provided in a ceiling 5. In the embodiment, for example, it is formed in a hollow cylindrical shape, an outer brim 7 is formed at an opening edge of a lower end, a plurality of fixtures 8 are provided on a side wall, and a hole is formed by passing the instrument body 1 through a hole 6 of a ceiling 5. The outer flange 7 is locked to the lower edge of the bracket 6, the fixture 8 is locked to the upper surface of the ceiling 5, and the appliance body 1 is mounted on the ceiling 5. Further, a frame support spring 20 using, for example, a magic spring is slidably engaged with a locking portion (not shown) provided on the inner surface of the instrument body 1, and the frame support spring 20 is attached to the frame 21.
The frame 21 is provided so as to be vertically movable with respect to the appliance body 1.
Covers the outer collar 7 at the ascending position. Reference numeral 18 denotes a hole provided in the top.

The lamp 2 has a lamp socket 9 and is swingably provided in the appliance body 1. In the embodiment, the lamp 10 is mounted on the lamp socket 9, and the lamp socket 9 is mounted on the socket base 12. The socket base 12 is a substantially cylindrical cover 1 that covers the outer periphery of the lamp 10.
4 is attached to the upper end of the lamp socket 9 by a screw 17 and protrudes upward from the hole 18 of the fixture body 1. The rear end of the lamp socket 9 is attached to the inner surface of the socket mounting portion 12b at the upper end of the socket base 12, and the front end of the lamp socket 9 is mounted. The part is directed inside the cover 14. The tip of the lamp 10 mounted on the lamp socket 9 passes through the cover 14 and protrudes downward from its lower end. The cover 14 has a pair of bearing recesses 16 at opposing positions on both sides. The cone 11 has a substantially cylindrical shape, and is loosely fitted to the outer periphery of the cover 14, and the lower end is placed on the inner flange of the frame 21, and is guided by the rising portion 21 a of the frame 21 to be horizontally rotatable. The cone 11 has a shaft portion 15 that supports the bearing recess 16. Therefore, when the cover 14 is rotated about the shaft 15, the lamp socket 9 and the lamp 10 attached to the socket base 12 swing, for example, as imaginary lines, and when the cone 11 is horizontally rotated with respect to the frame 21. , The lamp 10 rotates horizontally.

The projecting portion 3 is inserted into the hole 6 so as to be inserted into the instrument body 1.
When the lamp 2 is tilted to the maximum swing angle by projecting to the side of the lamp socket 9, the lamp socket 9 can enter the inside. In the embodiment, a substantially inverted U-shaped yoke 23 is provided at the upper end of the instrument body 1, and the protruding portion 3 is formed by bending one side of the yoke 23 into, for example, a dogleg shape. One end of the yoke 23 is attached to the top of the instrument body 1 with the screw 22, and the other end with the protrusion 3 is attached to the side surface of the instrument body 1. For this reason, the protruding portion 3 protrudes laterally outward from the appliance main body 1, but only a part thereof can be inserted through the hole 6 into the space above the ceiling. Socket base 1 with lamp socket 9
Since the lamp 2 is inclined as shown in FIG. 1 when the lamp 2 is inclined up to the inside of the projection 3, the angle at which the socket base 12 protrudes outward from the lamp body 2 even if the fixture body 1 is downsized. The lamp 10 can be inclined. Also yoke 2
Since the width direction of 3 is open behind the ceiling, the instrument main body 1 can be horizontally rotated in a state of being inclined at the maximum angle.
The range is the vertical wall 25 facing the protrusion 3 of the yoke 23.
Is a range A in which the rotation of the socket base 12 is restricted, and the range A is an angle of 360 degrees or less but exceeding about 180 degrees.

26 is a terminal block mounted on the vertical wall 25,
Reference numeral 27 denotes a lead wire connecting the terminal block 26 and the lamp socket 9. The top plate part 4 has at least a lamp socket 9.
This covers the surface to which dust adheres. In the embodiment, the top portion 23a of the yoke 23 corresponds, but the upper inclined portion 23b of the projection 3 forming a part of the projection 3 also covers the socket mounting portion 12b. Top part 23a of yoke 23
As shown in FIG. 2, the lamp socket 9 is formed in a substantially disk shape that covers the horizontal rotation trajectory of the upper portion 12a of the side surface of the socket base 12 at the maximum inclination angle of the lamp socket 9.

In this manner, the lamp 2 is set at the maximum swing angle.
When tilted, the upper part 12a of the side surface of the socket base 12 that covers the side surface of the lamp socket 9 is in any case accommodated in the projection plane from the upper part of the fixture for the following reason. That is, when the lamp 2 is tilted to the maximum swing angle, the lamp 1
The heat of 0 is transmitted to the upper portion 12a of the socket base 12 by convection from below the appliance, and the upper portion 12a is heated to a considerably high temperature. However, since the socket mounting portion 12b of the lamp socket 9 receives only the heat conduction of the lamp 10 and is hardly affected by convection, the temperature is lower than that of the upper portion 12a. Therefore, if the upper portion 12a of the side surface of the socket base 12 is covered from above the appliance, it is possible to prevent burning of dust adhering to the high-temperature portion due to exposure of the high-temperature portion.

According to this embodiment, since the projection 3 which can be inserted into the hole 6 of the ceiling 5 is provided, the lamp socket 9 of the lamp 2 enters the inside of the projection 3 and the swing angle of the lamp 2 is increased. Can be increased, and the instrument body 1
Can be reduced in size. In addition, since the top plate portion 4 is provided on the lamp socket 9 to cover the surface to which dust adheres, dust and water droplets do not adhere to the high-temperature portion of the lamp socket 9 so that the burning of dust due to heat can be prevented. Equipment (universal downlight) can be provided.

A second embodiment of the present invention will be described with reference to FIGS. That is, in the first embodiment, the lamp 2 is rotatable in the horizontal direction, and the protrusion 3 and the top plate 4 rotate integrally with the lamp 2. In this embodiment, the yoke 23 is attached to the cone 11. In this case, the socket table 1 is provided in both sides of the yoke 23.
2 does not extend, the area of the top plate portion 4 can be reduced, and the instrument body 1 does not need a yoke mounting portion on the top portion side. The apparatus main body 1 can be reduced in size to the extent that it protrudes upward.

According to this embodiment, the lamp 2 is rotatable in the horizontal direction, and the protrusion 3 and the top plate 4 rotate integrally with the lamp 2, so that the horizontal rotation angle is set to the first embodiment. The illumination direction can be made even larger than that of the embodiment, and an illumination direction variable illumination device (universal downlight) that can rotate 360 degrees can be realized. Others are the same as in the first embodiment.

[0016]

According to the first aspect of the present invention, since the projection that can be inserted into the hole in the ceiling is provided, the lamp socket of the lamp enters the inside of the projection to increase the swing angle of the lamp. And the size of the instrument body can be reduced. In addition, since the lamp socket is provided with the top plate that covers the surface to which the dust adheres, the dust does not adhere to the high-temperature portion of the lamp socket, so that the burning of the dust due to heat can be prevented.

According to the lighting apparatus of the second aspect, in addition to the same effects as those of the first aspect, the horizontal rotation angle can be increased because the projection and the top plate rotate together with the lamp.

[Brief description of the drawings]

FIG. 1 is a half sectional side view of a first embodiment of the present invention.

FIG. 2 is a plan view thereof.

FIG. 3 is a half sectional side view of a second embodiment.

FIG. 4 is a plan view thereof.

FIG. 5 is a half sectional side view of a conventional example.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 1 Instrument main body 2 Lamp 3 Projection part 4 Top plate part 5 Ceiling 6 hole 9 Lamp socket

Claims (2)

[Claims] 1. An appliance main body that can be inserted into a hole provided in a ceiling, and a lamp that has a lamp socket and is swingably provided in the appliance main body, and the appliance main body can be inserted through the hole. The lamp socket has a projecting portion that can enter inside when the lamp is inclined to the maximum swing angle by projecting to the side of the lamp socket, and has a top plate portion that covers at least a surface to which dust adheres to the lamp socket. Lighting equipment characterized by the above-mentioned. 2. The lamp is rotatable in a horizontal direction,
The lighting device according to claim 1, wherein the protrusion and the top plate rotate integrally with the lamp.