JP6824054B2 - lighting equipment - Google Patents

Description

The present invention relates to a lighting fixture such as a downlight with a variable angle that is waterproof and can adjust the irradiation direction.

Conventionally, in a downlight mounted so as to be embedded in a ceiling, a lighting fixture such as a universal downlight whose irradiation direction can be freely adjusted is well known. For example, the lighting fixtures shown in Patent Documents 1 to 3 below are a base frame attached to an installation hole in a ceiling wall and a light source unit that is rotatably attached to the base frame around a horizontal axis and emits illumination light downward. And have. The irradiation direction can be freely adjusted by inserting a finger into the base frame from below and rotating the light source unit.

On the other hand, lighting fixtures such as downlights installed outdoors need to be waterproof. In such outdoor downlights, for example, a transparent waterproof cover is watertight on the lower end opening surface of the base frame. It is common to ensure waterproofness by being attached to.

JP 2016-91955 JP-A-2016-66497 JP-A-2016-126863

However, in the above-mentioned conventional lighting equipment such as an outdoor downlight, since a waterproof cover is attached to the lower end opening surface of the base frame, it becomes impossible to insert a finger from below into the base frame. .. For this reason, when using a downlight with a variable angle, when changing the irradiation direction, it is troublesome to remove the waterproof cover, then insert your fingers into the base frame and rotate the light source unit. After adjusting the irradiation direction, it is necessary to attach the waterproof cover again. In this way, in the conventional outdoor variable angle downlight, when changing the irradiation direction, it is necessary to take the troublesome work of attaching and detaching the waterproof cover, so it is difficult to change the irradiation direction after installation. I have a problem.

The present invention has been made in view of the above problems, and is a lighting fixture such as an outdoor downlight with a variable angle that can easily and surely change the irradiation direction while ensuring waterproofness. The purpose is to provide.

In order to solve the above problems, the present invention provides the following means.

[1] An annular base frame that is embedded in the installation wall and is arranged behind the base frame with the front surface facing the inside of the frame of the base frame, and at the center of the base frame. A light source unit that is rotatably supported around an axis parallel to an axis orthogonal to the axis is provided so that illumination light emitted from the front surface of the light source unit passes through the frame of the base frame and is irradiated forward. It ’s a lighting fixture
A luminaire characterized in that a waterproof cover having elasticity and waterproofness is attached so as to cover the entire peripheral surface between the outer peripheral surface of the front end portion of the light source unit and the base frame.

[2] The lighting fixture according to item 1 above, wherein the waterproof cover is made of a bellows-shaped soft material.

[3] The lighting fixture according to item 1 or 2 above, wherein the waterproof cover is made of a material having a light-shielding property.

According to the lighting fixture of the invention [1], since a waterproof cover having elasticity is attached to the entire periphery between the lower end outer peripheral surface of the light source unit and the base frame, moisture that has entered the base frame from the front is waterproof. The cover can prevent intrusion into the inside of the ceiling or the like, and can ensure sufficient waterproofness. Furthermore, since waterproofness is ensured by a waterproof cover that covers the outer periphery between the light source unit and the base frame, it is not necessary to attach a waterproof cover to the front end opening surface of the base frame, for example, and the front end opening surface is not hindered by the waterproof cover. The angle adjustment operation of the light source unit can be easily and surely performed via the above.

According to the luminaire of the invention [2], since the waterproof cover is made of a bellows-shaped soft material, for example, a rubber tube, sufficient elasticity can be secured and the angle adjustment operation of the light source unit is impossible. It can be done smoothly without any problems.

According to the luminaire of the invention [3], since the waterproof cover is made of a light-shielding material, the line of sight is blocked by the waterproof cover, so that when the inside of the base frame of the luminaire is looked into from the front, It is possible to obtain a good aesthetic appearance without inadvertently recognizing the internal conditions such as the ceiling.

FIG. 1 is a perspective view showing a lighting fixture according to an embodiment of the present invention. FIG. 2 is a perspective view showing the luminaire of the embodiment in an exploded manner. FIG. 3 is a plan view showing the lighting fixture of the embodiment. FIG. 4 is a side sectional view showing the lighting equipment of the embodiment. FIG. 5 is a side view showing a state in which the light source unit is tilted in the lighting fixture of the embodiment. FIG. 6 is a side sectional view showing a state in which the light source unit is tilted in the lighting fixture of the embodiment.

1 is a perspective view showing a lighting fixture according to this embodiment, FIG. 2 is an exploded perspective view, FIG. 3 is a plan view, and FIG. 4 is a side sectional view, which corresponds to a sectional view taken along line IV-IV of FIG. It is a figure.

As shown in these figures, the luminaire of the present embodiment constitutes a universal downlight for outdoor use which is waterproof and whose irradiation direction can be freely adjusted. In the luminaire of the present invention, the direction of irradiating the illuminating light is the front and the opposite direction is the rear. However, since the luminaire of the present embodiment constitutes a downlight attached to the ceiling wall. The lower part, which is the direction of irradiating the illumination light, corresponds to the front side, and the upper part corresponds to the rear part.

The luminaire of the present embodiment includes a base frame 1, a light source unit 5, and a waterproof cover 9 as basic components.

The base frame 1 includes a fixed frame 2, a rotating frame 3, and a base frame cover 4. The fixed frame 2 has a cylindrical shape with a brim in which a flange 21 projecting outward is formed on the outer peripheral edge of the lower end. A substantially cylindrical base frame cover 4 is attached to the outer peripheral surface of the cylindrical portion of the fixed frame 2 so as to cover the entire circumference.

The rotating frame 3 is formed in a substantially annular shape having substantially the same diameter as the fixed frame 2, and is coaxially arranged on the upper side of the fixed frame 2 with respect to the base frame 1 ( It is rotatably attached around the axis X1 of the fixed frame 2). Further, a reflector 31 is arranged in the frame of the fixed frame 2. The reflector 31 is formed in a cylindrical shape (truncated cone shape) in which the diameter dimension increases toward the bottom. The upper end of the reflector 31 is fixed to the rotating frame 3, and is configured to be integrated with the rotating frame 3 so that the reflector 31 can rotate about the axis X1 of the base frame 1 with respect to the fixed frame 2.

Further, three mounting springs 22 composed of leaf springs are mounted on the outer peripheral surface of the fixed frame 2 at equal intervals in the circumferential direction. Each mounting spring 22 is arranged so as to be pulled out from above the base frame cover 4 and project in the outer diameter direction.

Then, when each mounting spring 22 is elastically deformed so as to be folded upward and then fitted into the installation hole of the ceiling wall from below to elastically restore each mounting spring 22, the mounting spring 22 is on the side above the ceiling wall. It unfolds toward you and comes into contact with the upper surface of the ceiling wall. As a result, the mounting spring 22 and the flange 21 sandwich the peripheral portion of the installation hole of the ceiling wall, the base frame 1 is mounted in a state of being embedded in the ceiling wall, and the entire luminaire is held by the ceiling wall. ing.

The light source unit 5 attached to the base frame 1 has a cylindrical casing 51 with both upper and lower ends open. A light source 52 is housed in the casing 51. The light source 52 is composed of a semiconductor light emitting element such as an LED (Light Emitting Mode), and its light emitting surface is arranged on the lower surface side so that the illumination light (LED light) can be emitted downward.

A lens 53 is attached to the lower end opening side of the casing 51 so as to be located below the light source 52, and a protective transparent plate 54 is attached below the lens 53 in the lower end opening of the casing 51 in a watertight state. ing. A heat sink 55 for releasing heat generated from the light source 52 is attached to the upper end opening of the casing 51.

The upper ends of the support arms 56 for attaching the light source unit 5 to the base frame 1 are fixed to both sides of the upper end of the outer peripheral surface of the casing 51. The support arm 56 is arranged so as to extend downward in parallel with the axis X2 of the light source unit 5, and the lower end of the support arm 56 is arranged so as to project downward from the lower end of the casing 51.

The waterproof cover 9 is made of a bellows-shaped soft material, for example, a rubber tube, and has elasticity. The waterproof cover 9 is made of a black material having a truncated cone shape in which the upper end has a small diameter and the diameter increases toward the lower end, and which has waterproof and light-shielding properties. Further, the waterproof cover 9 is configured as a fitting portion 91 whose upper end opening edge portion does not have a bellows shape, and a flange portion 92 projecting outward is formed at the lower end opening edge portion.

The lower end flange portion 92 of the waterproof cover 9 is placed on the upper surface of the rotating frame 3 in the base frame 1, and the ring-shaped presser fitting 15 is screwed onto the flange portion 92 of the waterproof cover 9. 15 is fixed to the rotating frame 3 together with the flange portion 92. As a result, the lower end flange portion 92 of the waterproof cover 9 is fixed in a watertight state in close contact with the rotating frame 3.

A mounting piece 17 is formed on the holding metal fitting 15 by cutting and raising a part thereof. The mounting pieces 17 are provided at two locations corresponding to the lower ends of the support arm 56 of the light source unit 5.

Then, the lower end of the support arm 56 in the light source unit 5 is centered on the mounting piece 17 of the base frame 1 around the horizontal axis, that is, the axis (rotation axis) Y parallel to the axis orthogonal to the axis X1 of the base frame 1. It can be mounted freely as. Therefore, by rotating the light source unit 5 with respect to the base frame 1 about the rotation axis Y, the light source unit 5 is tilted with respect to the axis X1 of the base frame 1 with its axis X2 as shown in FIGS. 5 and 6. Can be arranged as follows.

Further, the upper end fitting portion 91 of the waterproof cover 9 is fitted so as to elastically adhere to the outer periphery of the lower end portion of the casing 51 of the light source unit 5. In the fitted state, the binding band 95 is wound around the outer peripheral surface of the upper end fitting portion 91 of the waterproof cover 9, and the upper end portion of the waterproof cover 9 is fixed to the lower end portion of the casing 51 in a watertight state.

As a result, the waterproof cover 9 is attached in a watertight state so as to cover the entire circumference of the optical path space between the outer peripheral surface of the lower end portion of the casing 51 in the light source unit 5 and the peripheral edge portion of the base frame 1.

In the present embodiment, the light source unit 5 is attached to the base frame 1 so that the axis X2 of the light source unit 5 and the axis X1 of the base frame 1 do not match. That is, the axis X2 of the light source unit 5 arranged vertically is arranged in a state of being horizontally displaced from the axis X1 of the base frame 1 arranged vertically. The rotation axis Y of the light source unit 5 is arranged so as to be orthogonal to the axis X2 of the light source unit 5.

In the luminaire having the above configuration, the illuminating light emitted from the light source 52 of the light source unit 5 is emitted from the lower end of the light source unit 5, passes through the optical path space in the waterproof cover 9, and enters the reflector 31 of the base frame 1. The lower side of the luminaire is illuminated by being introduced and emitting downward through the inside of the reflector 31.

Further, in the luminaire of the present embodiment, as described above, the light source unit 5 is tilted with respect to the base frame 1 by rotating the light source unit 5 around the horizontal axis Y, as shown in FIGS. 5 and 6. Since it can be arranged, the illumination light emitted from the light source unit 5 can be irradiated obliquely downward, and the irradiation direction can be tilted. Further, since the rotating frame 3 to which the light source unit 5 is attached is rotatably attached around the vertical axis X1 of the base frame 1, the light source unit 5 is appropriately rotated around the vertical axis X and around the horizontal axis Y. By rotating and tilting the light source unit 5, the direction of the illumination light emitted from the light source unit 5 can be freely adjusted over a wide range.

Further, in the lighting fixture of the present embodiment, since the entire circumference of the optical path space between the lower end of the light source unit 5 and the base frame 1 is covered by the waterproof cover 9, the inside of the reflector 31 is covered from the lower side of the base frame 1. Moisture that has entered the optical path space through the light path can be prevented from entering the ceiling outside the lighting fixture by the waterproof cover 9, and sufficient waterproofness can be ensured.

Further, in the present embodiment, since waterproofness is ensured by a waterproof cover 9 that covers the outer periphery between the light source unit 5 and the base frame 1, the lower end opening surface of the base frame 1 is covered like a conventional outdoor downlight. There is no need to attach a waterproof cover to block the opening surface. Therefore, the fingers can be inserted from the lower end opening of the base frame 1 without any trouble, and the rotation operation around the vertical axis and the tilting operation around the horizontal axis of the light source unit 5 can be easily and surely performed.

Further, in the lighting fixture of the present embodiment, since the waterproof cover 9 covering between the light source unit 5 and the base frame 1 has elasticity, the light source unit 5 is attached to the base frame 1 as shown in FIGS. 5 and 6. When the angle adjustment operation (tilting operation) is performed, the waterproof cover 9 expands and contracts and deforms following the tilting operation. Therefore, the tilting operation of the light source unit 5 can be performed smoothly without difficulty, and a large load is not applied to the waterproof cover 9 extremely, and the durability of the waterproof cover 9 can be sufficiently ensured. ..

In particular, in the present embodiment, since the waterproof cover 9 is made of a soft material such as a bellows-shaped rubber tube, sufficient elasticity can be ensured, and the operation of the light source unit 5 described above when tilting is performed. The properties and the durability of the waterproof cover 9 can be further improved.

Further, in the lighting fixture of the present embodiment, since the waterproof cover 9 is made of a material having a light-shielding property such as black, the line of sight is blocked by the waterproof cover 9, so that the inside of the base frame 1 of the lighting fixture is viewed from below. When looking into it, the situation behind the ceiling is not recognized, and a good aesthetic can be obtained. However, in the present invention, it is not always necessary to use a light-shielding cover as the waterproof cover, and a transparent or translucent translucent cover may be used. Even when the translucent waterproof cover is adopted in this way, at least waterproofness can be ensured.

In the above embodiment, the case where the luminaire of the present invention is applied to the downlight to be attached to the ceiling wall has been described as an example, but the attachment place of the luminaire of the present invention is not particularly limited. For example, it may be mounted on a vertical surface such as a wall surface or a horizontal surface such as a floor surface.

Further, the luminaire of the present invention is not limited to the outdoors, and may be installed indoors. For example, the lighting fixture of the present invention may be installed indoors such as an indoor pool or a bathtub where waterproofness is required.

The luminaire of the present invention can be suitably used as a waterproof universal downlight having a variable angle that can be installed outdoors.

1: Base frame 5: Light source unit 9: Waterproof cover X1: Axis center of base frame Y: Rotation axis of light source unit

Claims (3)

An annular base frame that is embedded in the installation wall and is arranged behind the base frame with its front surface facing the inside of the frame of the base frame, and is orthogonal to the axis of the base frame. Illumination that includes a light source unit that is rotatably supported around an axis parallel to the axis so that illumination light emitted from the front surface of the light source unit passes through the frame of the base frame and is emitted forward. It ’s an instrument,
A luminaire characterized in that a waterproof cover having elasticity and waterproofness is attached so as to cover the entire peripheral surface between the outer peripheral surface of the front end portion of the light source unit and the base frame. The lighting fixture according to claim 1, wherein the waterproof cover is made of a bellows-shaped soft material. The lighting fixture according to claim 1 or 2, wherein the waterproof cover is made of a material having a light-shielding property.

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