JP2020198213A - Down light - Google Patents

Abstract

To provide a down light in which a spring for mounting does not interfere with connection of an electric wire.SOLUTION: A down light which is mounted in a mounting hole 61 of an installation ceiling 60 in an embedded state includes: a lamp body 20; terminals 31, 32 for connecting an electric wire for supplying power to the lamp body 20; and a plurality of mounting springs 40, 50 for mounting the lamp body 20 in the mounting hole 61 of the installation ceiling 60. The plurality of mounting springs 40, 50 are arranged radially with an interval in a circumferential direction of the lamp body 20, and the mounting spring 40 closest to the terminals 31, 32 is arranged at a position of 5°-20° in a direction going farther away from the electric wire with respect to a connection direction of the electric wire to the terminals 31, 32.SELECTED DRAWING: Figure 4A

Description

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

As a lighting fixture installed on the ceiling, a downlight embedded in a mounting hole formed in the ceiling is known. Such downlights are provided with springs that project outward from the instrument body to lock into the mounting holes. To install the downlight, the electric wire laid behind the ceiling was pulled out under the ceiling, connected to the lighting fixture, and the spring was 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. 63097776

In a downlight having the above structure, a spring protruding outward may be an obstacle when connecting an electric wire to a luminaire.

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 the following [1] to [3].

[1] A downlight that is embedded in the mounting hole of the installation ceiling.
It is provided with a lamp body, a terminal for connecting an electric wire for supplying power to the lamp body, and a plurality of mounting springs for mounting the lamp body in mounting holes on the 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 5 ° to 20 in the direction away from the electric wire with respect to the connection direction of the electric wire to the terminal. A downlight characterized by being located at the ° position.

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

[3] The downlight according to item 1 or 2 above, which comprises 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 the above [1], since the mounting spring is mounted in the direction away from the electric wire connected to the terminal, the space in front of the terminal is widened and it is difficult to interfere with the mounting spring when the electric wire is connected.

In the downlight described in [2] above, that is, the downlight in which the terminal is mounted at 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.

It is a perspective view of one Embodiment of the downlight of this invention. It is a top view of the downlight of FIG. It is a front view of the downlight of 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. 4B is a perspective view of FIG. 4B viewed from another direction. It is a perspective view which shows the state which the downlight is installed on the ceiling.

Figures 1 to 3 show an embodiment of the downlight of the present invention.

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

The base 10 includes a ring-shaped frame body 11 and a flange 12 projecting from the outer peripheral portion of the lower end of the frame body 11.

The lamp body 20 includes a cylindrical lamp house 21 in which a lamp is housed and a rectangular parallelepiped control unit 22, and the control unit 22 is provided at a position closer to the side from the center R on 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 unit 22 projects outside the frame body 11.

The terminal block 30 is arranged side by side with the control unit 22 on the upper surface of the lamp house 21, and two sets of terminals 31 and 32 for power supply lines and feed wiring are attached to the side surfaces. In the figure, only one terminal of each set is displayed. An electric wire such as a power supply line and a feed wiring is connected to the terminals 31 and 32 from the direction shown by A in FIG.

The mounting springs 40 and 50 are elastically deformable leaf springs in which a plurality of metal plates are bent, and are generally V-shaped. The two mounting springs 40 and 50 are arranged at positions facing 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. In the mounting springs 40 and 50, one V-shaped element becomes the base end portions 41 and 51, and the bending support portions 41a and 51a at the tip thereof are fixed to the upper surface of the lamp house 21, and the other element is a free end portion. It becomes 42, 52 and extends radially outward of the base 10, and the bent portions 43, 53 between the base end portions 41, 51 and the free end portions 42, 52 are located near the upper surface of the flange 12 of the base 10. ing. The free end portions 42 and 52 are elastically deformed toward the base end portions 41 and 51 with the bent portion 43 as a fulcrum, and are locked to the installation ceiling by the restoring force thereof.

In FIG. 2, P indicates a straight line passing through the center R of the lamp house 21 and parallel to the connection direction A of the electric wires. Of the two mounting springs 40 and 50, the mounting spring 40 close to the terminals 31 and 32 is arranged at a position of 10 ° with respect to the straight line P in the direction away from the terminals 31 and 32. Since the straight line P is parallel to the connection direction A of the electric wire or the like, the mounting spring 40 is arranged at a position at an angle of 10 ° in the direction away from the connection direction A of the electric wire or the like. In the present invention, the position of the mounting spring 40 is defined by the angle Q with respect to the connection direction A of the electric wire or the like, and the Q is in the range of 5 ° to 20 °. In this way, if the wire is angled with respect to the connection direction A, the space in front of the terminals 31 and 32 expands, so that when the wire is connected to the terminals 31 and 32, it is less likely to interfere with the mounting spring 40, and the connection work becomes difficult. It will be easier. Further, even when the mounting spring 40 is elastically deformed after connecting the electric wires, it does not easily interfere with the electric wires. If the angle Q is less than 5 °, the space of the terminals 31 and 32 is slightly expanded, and the above effect is poor. The preferred range of the angle Q is 10 ° to 15 °.

As described above, the terminals 31 and 32 are arranged at positions closer to the side from the center R of the lamp house 21 (that is, the center R of the lamp 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 radially arranged on the lamp body 20 tend to be close to the electric wire and easily interfere with each other. However, the mounting spring 40 is connected to the electric wire in the connection direction A. If it is arranged at an angle with respect to the terminal, the space in front of the terminals 31 and 32 is widened, so that they are less likely to interfere with each other.

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

The size of the downlight is not limited in the present invention. However, in a small downlight, since the mounting space itself for the mounting spring and the terminal is small, the mounting spring and the terminal are close to each other, so that the mounting spring and the electric wire are likely to interfere with each other. Therefore, the present invention has greater significance for application to a small downlight than a large downlight.

In addition, the installation of the downlight requires a space for embedding behind the installation ceiling, but the height of the space varies depending on the installation location. When the height of the space is sufficiently deep (high), it is easy to push the electric wire connected to the terminal away from the mounting spring. However, when the height of the space is shallow (low), the electric wire easily comes into contact with the installation ceiling and the range in which the electric wire can be freely moved becomes narrow, which makes the installation work difficult. Since the downlight of the present invention is mounted in the direction in which the mounting spring is away from the electric wire and interference between the two is unlikely to occur, it is easy to install the downlight even on an installation ceiling where the height of the embedding space is shallow.

[How to install the 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 supply line 62 and the feed wiring 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 close to the terminals 31 and 32 is mounted in a direction away from the power supply line 62 and the feed wiring 63, the power supply line 52 and the feed wiring 53 that interfere 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 and 52 of the two mounting springs 40 and 50 are manually pushed toward the frame 11 side to be elastically deformed and the distance between the two free ends 42 and 52. Narrow. Since the mounting spring 40 is mounted in a direction away from the power supply line 52 and the feed wiring 53, the free end portions 42 and 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 hands are released from the mounting springs 40 and 50, the elastically deformed free end portions 42 and 52 are restored, and the root portions 42a and 52a of the free end portions 42 and 52 are the mounting holes 61. Press the peripheral surface of. Further, the tip portions 42b and 52b of the free end portions 42 and 42 press the back surface of the ceiling 60, and the ceiling 60 is sandwiched between the flange 12 and the tip portions 42b and 52b of the free end portions 42 and 52. As a result, the downlight 1 is fixed in a state of being embedded in the ceiling 60 by 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.

1 ... Downlight 10 ... Base 11 ... Frame 12 ... Flange 20 ... Lamp body 21 ... Lamp house 22 ... Control unit 30 ... Terminal blocks 31, 32 ... Terminals 40, 50 ... Spring with mounting 60 ... Ceiling (installed ceiling)
61 ... Mounting hole 62 ... Power line (electric wire)
63 ... Feed wiring (electric wire)

Claims (3)

It is a downlight that can be installed embedded in the mounting hole of the installation ceiling.
It is provided with a lamp body, a terminal for connecting an electric wire for supplying power to the lamp body, and a plurality of mounting springs for mounting the lamp body in mounting holes on the 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 5 ° to 20 in the direction away from the electric wire with respect to the connection direction of the electric wire to the terminal. A downlight characterized by being located at the ° position. The downlight according to claim 1, wherein the terminal is attached at a position where the connection direction of the electric wire does not face the center of the lamp body. The downlight according to claim 1 or 2, further comprising two mounting springs, the mounting springs being arranged at positions facing the center of the lamp body.

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