JP7336265B2 - Downlight - Google Patents

Description

The present invention relates to a downlight installed on a ceiling or the like.

A downlight embedded in a mounting hole formed in the ceiling is known as a lighting fixture installed on the ceiling. Such downlights have springs that extend outwardly from the fixture body for locking into mounting holes. In order to install the downlight, the electric wire laid in the ceiling is pulled out under the ceiling and connected to the lighting fixture, and the spring is elastically deformed upward and pushed into the mounting hole along the fixture body to restore it. The spring is locked to the ceiling (see Patent Document 1).

Japanese Patent No. 6309776

In the downlight having the structure described above, the spring that protrudes outward may be an obstacle when connecting the electric wire to the lighting fixture.

SUMMARY OF THE INVENTION In view of the background art described above, the present invention provides a downlight in which a mounting spring does not interfere with the connection of electric wires.

That is, the present invention has the configurations described in [1] to [3] below.

[1] A downlight that is embedded in a mounting hole of an installation ceiling,
a lamp body, a terminal for connecting an electric wire that supplies power to the lamp body, and a plurality of mounting springs for mounting the lamp body in a mounting hole of an installation ceiling,
The plurality of mounting springs are arranged radially at intervals in the circumferential direction of the lamp body, and the mounting spring closest to the terminal is angled 5° to 20° in the direction away from the wire with respect to the direction of connection of the wire to the terminal. A downlight characterized by being arranged at a position of °.

[2] The downlight according to the preceding item 1, wherein the terminal is attached at a position where the direction of connection of the electric wire does not face the center of the lamp body.

[3] The downlight according to the preceding item 1 or 2, which includes two mounting springs, and these mounting springs are arranged at positions facing each other with respect to the center of the lamp body.

According to the downlight described in [1] above, since the mounting spring is mounted in a direction away from the electric wire connected to the terminal, the space in front of the terminal is widened, and the mounting spring is less likely to interfere with the electric wire connection.

In the downlight described in [2] above, that is, the downlight in which the terminal is attached in a position where the connection direction of the electric wire does not face the center of the lamp body, the space in front of the terminal is widened so that the electric wire does not easily interfere with the mounting spring. can do.

According to the downlight described in [3] above, since the number of mounting springs is two, the installation work can be performed with one hand.

1 is a perspective view of one embodiment of the downlight of the present invention; FIG. 2 is a plan view of the downlight of FIG. 1; FIG. 2 is a front view of the downlight of FIG. 1; FIG. It is a perspective view which shows the installation work of a downlight. It is a perspective view which shows the installation work of a downlight. FIG. 4C is a perspective view of FIG. 4B viewed from another direction; FIG. 3 is a perspective view showing a state in which the downlight is installed on the ceiling;

1-3 show one embodiment of the downlight of the present invention.

The downlight 1 comprises a base 10, a lamp body 20, a terminal block 30 and two mounting springs 40,50.

The base 10 has an annular frame 11 and a flange 12 protruding from the outer peripheral portion of the lower end of the frame 11 .

The lamp main body 20 comprises a cylindrical lamp house 21 in which a lamp is housed and a rectangular parallelepiped control section 22. The control section 22 is provided at a position laterally from the center R of the upper surface of the lamp house 21. ing. The center R of the lamp house 21 is the center of the lamp body 20 . The lamp house 21 is fitted and fixed to the frame 11 of the base 10 , and the light guide plate 23 at the lower end is exposed from the frame 11 . Further, the control section 22 protrudes outside the frame 11 .

The terminal block 30 is arranged on the upper surface of the lamp house 21 side by side with the control section 22, and two sets of terminals 31 and 32 for power supply lines and feed wiring are attached to the side surfaces thereof. Note that the drawing shows only one terminal in each set. Electric wires such as power supply wires and feed wires are connected to the terminals 31 and 32 from the direction indicated by A in FIG.

The mounting springs 40 and 50 are elastically deformable plate springs formed by bending metal plates at a plurality of locations, and are generally V-shaped. The two mounting springs 40 and 50 are positioned facing each other with respect to the center R of the lamp house 21 , that is, the two mounting springs 40 and 50 are arranged at intervals of 180° in the circumferential direction of the lamp house 21 . One of the V-shaped elements of the mounting springs 40 and 50 is a base end portion 41 or 51, and a bending support portion 41a or 51a at the tip thereof is fixed to the upper surface of the lamp house 21, and the other element is a free end portion. The bent portions 43, 53 between the base ends 41, 51 and the free ends 42, 52 are located near the upper surface of the flange 12 of the base 10. ing. The free ends 42 and 52 are elastically deformed toward the base ends 41 and 51 with the bent portion 43 as a fulcrum, and are locked to the installation ceiling by the restoring force.

In FIG. 2, P indicates a straight line passing through the center R of the lamp house 21 and parallel to the connecting direction A of the electric wire. Of the two mounting springs 40 , 50 , the mounting spring 40 closer to the terminals 31 , 32 is arranged at a position of 10° with respect to the straight line P in the direction away from the terminals 31 , 32 . Since the straight line P is parallel to the connection direction A of the electric wire, the mounting spring 40 is arranged at an angle of 10° in the direction away from the connection direction A of the electric wire. In the present invention, the position of the mounting spring 40 is defined by an angle Q with respect to the connection direction A of the electric wire, and Q is in the range of 5° to 20°. Since the space in front of the terminals 31 and 32 is widened when the angle is set with respect to the connection direction A of the electric wires, the attachment spring 40 is less likely to interfere when the electric wires are connected to the terminals 31 and 32, and the connection work is facilitated. become easier. Moreover, even when the mounting spring 40 is elastically deformed after the electric wire is connected, it is difficult to interfere with the electric wire. If the angle Q is less than 5°, the expansion of the space between the terminals 31 and 32 is slight and the above effect is poor. A preferred range of the angle Q is 10° to 15°.

As described above, the terminals 31 and 32 are arranged laterally from the center R of the lamp house 21 (that is, the center R of the lamp main body 20). Moreover, the terminals 31 and 32 are attached at positions where the electric wire connection direction A does not face the center R of the lamp body 20 . When the terminals 31 and 32 are attached at such positions, the mounting springs 40 arranged radially on the lamp body 20 tend to come close to the electric wires and interfere with each other. Since the space in front of the terminals 31 and 32 is widened, they are less likely to interfere with each other.

Although at least two mounting springs are required, downlights having three or more mounting springs are also included in the present invention. As shown in FIG. 4B, when two mounting springs are attached, the two mounting springs can be pressed with the thumb and forefinger, so the installation work can be performed with one hand.

The dimensions of the downlight are not limited in the present invention. However, in a small downlight, the space for mounting the mounting springs and the terminals is small, and the mounting springs and the terminals are close to each other. Therefore, the present invention is more significant in application to small downlights than to large downlights.

In addition, the installation of the downlight requires a space for embedding on the back side of the installation ceiling, and the height of the space varies depending on the installation location. If the height of the space is sufficiently deep (high), it is easy to force the wire connected to the terminal away from the mounting spring. However, if the height of the space is shallow (low), the wires are likely to come into contact with the installation ceiling, and the range in which the wires can be freely moved becomes narrow, making installation work difficult. In the downlight of the present invention, since the mounting spring is mounted in the direction away from the electric wire, interference between the two is unlikely to occur, so that the downlight can be easily installed even on the ceiling where the embedding space is shallow.

[How to install a downlight]
A method of installing the downlight 1 in the mounting hole 61 of the ceiling 60 will be described with reference to FIGS. 4A to 4D. The diameter of the mounting hole 61 is slightly larger than the frame 11 of the base 10 of the downlight 1 and smaller than the outer diameter of the flange 12 .

First, as shown in FIG. 4A, the power line 62 and the feed line 63 are pulled out from the mounting hole 61 of the ceiling 60 and connected to the terminals 31 and 32 . Since the mounting spring 40 near the terminals 31 and 32 is mounted away from the power line 62 and the feed wiring 63, the power line 52 and the feed wiring 53 interfering with the mounting spring 40 can be connected to the terminals 31 and 32.

Next, as shown in FIGS. 4B and 4C, the free ends 42, 52 of the two mounting springs 40, 50 are pushed toward the frame 11 by hand to elastically deform the distance between the free ends 42, 52. narrow the Since the mounting spring 40 is mounted in a direction away from the power line 52 and the feed line 53, the free ends 42, 52 can be deformed without any trouble. In this state, the frame 11 of the base 10 is inserted into the mounting hole 61 from the terminal block 30 side.

Then, as shown in FIG. 4D , when the mounting springs 40 and 50 are released, the elastically deformed free ends 42 and 52 are restored, and the base portions 42 a and 52 a of the free end portions 42 and 52 are inserted into the mounting holes 61 . press the peripheral surface of Further, the tips 42b, 52b of the free ends 42, 42 press the back surface of the ceiling 60, and the flange 12 and the tips 42b, 52b of the free ends 42, 52 pinch the ceiling 60 therebetween. Thereby, the downlight 1 is fixed in a state embedded in the ceiling 60 by the two mounting springs 40 and 50 .

The downlight of the present invention can be used as a lighting fixture embedded in a ceiling or the like.

Reference Signs List 1 Downlight 10 Base 11 Frame 12 Flange 20 Lamp main body 21 Lamp house 22 Control section 30 Terminal blocks 31, 32 Terminals 40, 50 Mounting spring 60 Ceiling (installation ceiling)
61... Mounting hole 62... Power wire (electric wire)
63 ... Feed wiring (electric wire)

Claims (3)

It is a downlight that is embedded in the mounting hole of the installation ceiling,
A lamp body, a terminal for connecting an electric wire for supplying power to the lamp body, a plurality of mounting springs for mounting the lamp body in a mounting hole of an installation ceiling , and a diameter smaller than the mounting hole and arranged to be inserted into the mounting hole. and a frame body to be
The plurality of mounting springs are arranged radially at intervals in the circumferential direction of the lamp body, and the mounting spring closest to the terminal is angled 5° to 20° in the direction away from the wire with respect to the direction of connection of the wire to the terminal. It is placed at the position of ° ,
A downlight according to claim 1, wherein said terminal is arranged inside an outer peripheral edge of said frame in plan view . 2. The downlight according to claim 1, wherein the terminal is attached at a position where the direction of connection of the electric wire does not face the center of the lamp body. 3. A downlight according to claim 1 or 2, comprising two mounting springs, the mounting springs being arranged at opposite positions with respect to the center of the lamp body.

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