JP-7854654-B2 - Lighting fixtures

Inventors

• 波多野 浩二

Assignees

• パナソニックＩＰマネジメント株式会社

Dates

Publication Date

20260507

Application Date

20220720

Claims (11)

1. Multiple LEDs arranged in a ring, Multiple lenses for individually focusing the illumination light emitted from each of the multiple LEDs, A reflective member that reflects the illumination light focused by the plurality of lenses onto a reflective surface, A fixture body housing the plurality of LEDs, the plurality of lenses, and the reflective member, Equipped with, The fixture body has an emission window for emitting the illumination light reflected from the reflective surface, The reflective surface is inclined to move closer to the emission window as it moves away from the plurality of lenses . A portion of the fixture body surrounding the ejection window is formed to expand in diameter toward the outside of the fixture body . Lighting fixtures.
2. Multiple LEDs arranged in a ring, Multiple lenses for individually focusing the illumination light emitted from each of the multiple LEDs, A reflective member that reflects the illumination light focused by the plurality of lenses onto a reflective surface, A fixture body housing the plurality of LEDs, the plurality of lenses, and the reflective member, Equipped with, The fixture body has an emission window for emitting the illumination light reflected from the reflective surface, The reflective surface is inclined to move closer to the emission window as it moves away from the plurality of lenses. A part of the reflective surface, the first reflective surface facing the plurality of lenses along the optical axis of the plurality of lenses, is inclined at a certain angle with respect to the optical axis. A second reflective surface, which is part of the reflective surface and closer to the exit window than the first reflective surface, is formed in a concave curved shape. A third reflective surface, which is part of the reflective surface and closer to the exit window than the second reflective surface, is formed in the shape of a convex curved surface with a greater curvature than the second reflective surface. Lighting fixtures.
3. A part of the reflective surface, the first reflective surface facing the plurality of lenses along the optical axis, is inclined at a certain angle with respect to the optical axis. A lighting fixture according to claim 1 .
4. A second reflective surface, which is part of the reflective surface and closer to the exit window than the first reflective surface, is formed in a concave curved shape. The lighting fixture according to claim 3.
5. A third reflective surface, which is part of the reflective surface and closer to the exit window than the second reflective surface, is formed in the shape of a convex curved surface with a greater curvature than the second reflective surface. The lighting fixture according to claim 4 .
6. The reflective member has a flat outer periphery that is closest to the emission window. The lighting fixture according to claim 2 .
7. The device further comprises a globe that is transparent to the illumination light and is housed in the main body of the device so as to block the emission window. The lighting fixture according to claim 2 .
8. The globe is capable of diffusing the illumination light. The lighting fixture according to claim 7 .
9. A portion of the fixture body surrounding the ejection window is formed to expand in diameter toward the outside of the fixture body. The lighting fixture according to claim 2 .
10. Further equipped with a lens block, The lens block comprises the plurality of lenses and a connecting portion that connects the plurality of lenses. The lighting fixture according to claim 2 .
11. The main body of the device is formed in a cylindrical shape, The ejection window is formed in an annular shape on the circumferential surface of the device body. The lighting fixture according to claim 2.

Description

This disclosure relates to lighting fixtures, and more particularly to lighting fixtures that control light distribution using reflection. As a conventional example, we will illustrate the lighting fixture described in Patent Document 1. The lighting fixture described in Patent Document 1 (hereinafter referred to as the conventional example) comprises a main body with an opening, an LED installed inside the main body that emits light from the opening, and a colored resin louver. The colored resin louver allows the light emitted downward from the LED to pass through the opening, and alters the color of the light emitted horizontally and upward. Japanese Patent Publication No. 2013-4424 Figure 1 is a perspective view showing a lighting fixture according to the present disclosure mounted in a recessed box.Figure 2 is an exploded perspective view of the same lighting fixture.Figure 3 is a longitudinal cross-sectional view of the same lighting fixture.Figure 4 is a perspective view of the reflective member in the same lighting fixture.Figure 5 is a perspective view of the lens block in the same lighting fixture.Figure 6 is a front view of the LED module and lens block in the same lighting fixture.Figure 7 is a longitudinal cross-sectional view of the main part of the same lighting fixture.Figure 8 is a perspective view showing the illuminated state of the same lighting fixture.Figure 9 shows the light distribution characteristics of the same lighting fixture.Figure 10 is a distribution diagram of direct horizontal illuminance for the same lighting fixture. The lighting fixtures according to the embodiments of this disclosure will be described in detail below with reference to the drawings. However, the figures described in the following embodiments are schematic diagrams, and the ratios of the size and thickness of each component do not necessarily reflect the actual dimensional ratios. Furthermore, the configurations described in the following embodiments are merely examples of this disclosure. This disclosure is not limited to the following embodiments, and various modifications are possible depending on the design, etc., as long as the effects of this disclosure can be achieved. (1) Overview The lighting fixture A1 according to this embodiment comprises a plurality of LEDs 100, a plurality of lenses 110, a reflective member 3, and a fixture body 2 (see Figures 2 and 3). Multiple LEDs 100 are arranged in a ring shape. Multiple lenses 110 each concentrate the illumination light emitted from each of the multiple LEDs 100. The reflective member 3 reflects the illumination light focused by the multiple lenses 110 onto its reflective surfaces (first reflective surface 310, second reflective surface 320, third reflective surface 330). The fixture body 2 houses the multiple LEDs 100, the multiple lenses 110, and the reflective member 3. The fixture body 2 has an emission window 20 for emitting the illumination light reflected from the reflective surfaces. The reflective surfaces are inclined so that they move closer to the emission window 20 as they move away from the multiple lenses 110. In this embodiment, the lighting fixture A1 concentrates the illumination light emitted from multiple LEDs 100 using multiple lenses 110, and then reflects it off the reflective surface of the reflective member 3, emitting it out of the fixture body 2 through the emission window 20. Furthermore, in this embodiment, the reflective surface of the lighting fixture A1 is inclined to move closer to the emission window 20 as it moves away from the multiple lenses 110, thus expanding the illumination range of the illumination light emitted from the emission window 20. (2) Details of the lighting fixture according to the embodiment The lighting fixture A1 according to the embodiment (hereinafter abbreviated as lighting fixture A1) comprises a light source unit 1, a fixture body 2, a reflective member 3, a globe 4, a power supply unit 5, etc. (see Figures 1-3). The lighting fixture A1 is a so-called foot stand lighting fixture that is attached to a buried box B1 buried in the ground and used to illuminate garden walkways, etc. (see Figure 1). However, the lighting fixture according to the embodiment is not limited to a foot stand. (2-1) Recessed Box The recessed box B1 has a box-shaped lower body B10 with an open top, an upper body B11 that closes the top surface of the lower body B10, and a mounting base B12 that protrudes upward from the center of the top surface of the upper body B11 (see Figure 1). The lower body B10, the upper body B11, and the mounting base B12 are all made of a metal material such as stainless steel. The lower body B10 has two knockout holes B100 on each of its two opposing sides, through which conduit pipes can be connected. The upper body B11 has a rectangular hole in the center of its top surface for inserting electrical wires. The mounting base B12 has a cylindrical body B120 and an annular mounting portion B121 t