JP2016058154A - Lighting fixture - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a lighting fixture capable of preventing a cover from falling from a fixture body.SOLUTION: A lighting fixture 10 includes: an engagement recess part 35 provided on an outer peripheral surface 16 of a fixture body 15; and an engagement protrusion part 41 provided on an inner peripheral surface 26 of a cover 25. The engagement recess part 35 includes: a first groove part 36 formed on the outer peripheral surface 16; a second groove part 37 continuing from the first groove part 36 in a circumferential direction of the outer peripheral surface 16; a first protrusion 38 provided in the first groove part 36; and a second protrusion 39 provided in the second groove part 37. The first protrusion 38 is formed so that the engagement protrusion part 41 rides over along a radial direction of the fixture body 15. The second protrusion 39 is formed so that the engagement protrusion part 41 rides over along a bus line direction of the outer peripheral surface 16.SELECTED DRAWING: Figure 6

Description

  The present invention relates to a lighting fixture in which a fixture main body is attached to a construction material, and an outer peripheral surface of the fixture main body is covered with a cover.

In an illuminating device, an engaging convex portion provided on an inner peripheral surface of an upper shade (hereinafter referred to as an instrument main body) and an engaging concave portion provided on an outer peripheral surface of a lower shade (hereinafter referred to as a cover) are engaged. Thus, there is known one in which a cover is fixed to the instrument body. The engaging recess has a first groove along the generatrix of the outer peripheral surface and a second groove along the circumferential direction of the outer peripheral surface while continuing to the first groove.
The engagement convex portion is guided to the first groove portion, and then the engagement convex portion is guided to the second groove portion, whereby the cover is fixed to the instrument body (Patent Document 1).

Japanese Utility Model Publication No. 50-29692

  However, in the lighting fixture of Patent Document 1, when the cover rotates along the circumferential direction with respect to the fixture body, the engagement convex portion moves from the second groove portion to the first groove portion, and thus the cover falls off from the fixture body. There is a fear.

  The present invention has been made to solve the above-described problems, and an object of the present invention is to provide a lighting fixture that can prevent the cover from dropping off from the fixture body.

  The lighting fixture of the present invention includes a bottomed cylindrical fixture body attached to a construction material, a power source and a light source provided in the fixture body, and a substantially cylindrical cover that covers at least the outer peripheral surface of the fixture body. An engagement recess provided on the outer peripheral surface of the instrument body, and an engagement protrusion provided on the inner peripheral surface of the cover and engaging with the engagement recess. A first groove portion having a predetermined dimension continuous along a generatrix of the outer peripheral surface, a second groove portion continuing to the first groove portion and continuing a predetermined dimension in the circumferential direction of the outer peripheral surface, and provided in the first groove portion, A first protrusion over which the engaging convex part rides along the radial direction of the instrument body, and a second protrusion provided in the second groove part and over which the engaging convex part goes over along the generatrix direction of the outer peripheral surface, Prepare.

  According to the lighting fixture of the present invention, it is possible to provide a lighting fixture that can prevent the cover from falling off from the fixture body.

Sectional drawing which shows the lighting fixture of embodiment which concerns on this invention The disassembled perspective view which shows the lighting fixture of FIG. Sectional view taken along the line II of FIG. The perspective view which shows the construction material and metal bar of FIG. The side view which shows the engagement recessed part of FIG. The perspective view which shows the relationship between the engagement recessed part and engagement convex part of embodiment The perspective view explaining the example which assembles a cover to the instrument main part of an embodiment The perspective view which shows the engagement recessed part of a modification.

Hereinafter, the lighting fixture according to the embodiment will be described with reference to the drawings.
(Embodiment)
As shown in FIGS. 1 and 2, the lighting fixture 10 includes a fixture main body 15 attached to the building material 11, a power supply unit 18 accommodated in the fixture main body 15, a first terminal block 21 and a second terminal block 22, A light source unit 23 supported by the instrument main body 15 and a cover 25 covering the instrument main body 15 are provided.
Furthermore, the luminaire 10 includes a holder 28 that holds the light source unit 23 and a lens 29 that is provided below the light source unit 23.

  As shown in FIG. 3, the instrument body 15 is formed in a bottomed cylindrical shape (see also FIG. 2), the power supply unit 18 is accommodated in the internal space 31, and the first terminal block 21 and the A two-terminal block 22 is accommodated. The light source part 23 is supported via the insulating heat dissipating sheet 17 at the lower part 15A of the instrument main body 15 (see FIG. 1), that is, at the lower center part of the instrument main body 15 opposite to the internal space 31.

As shown in FIG. 4, the metal bar 12 intersects with the upper surface 11 </ b> A of the construction material 11, and the instrument main body 15 (see FIG. 1) is fixed to the intersection 13 of the metal bar 12 via the construction material 11. The Moreover, the opening part 14 is formed in the location 11BA which remove | deviated from the crossing part 13 among the construction materials 11. FIG.
Returning to FIG. 3, the electric wire 32 is drawn from the opening 14 of the building material 11 to the internal space 31 of the instrument main body 15. In the internal space 31 of the instrument body 15, the drawn-out electric wires 32 are transferred from the electric wire insertion holes 21 </ b> A of the first terminal block 21 and the electric wire insertion holes 22 </ b> A of the second terminal block 22 to the first terminal block 21 and the second terminal block 22. Connected.

Therefore, the electric wire insertion hole 21 </ b> A of the first terminal block 21 and the electric wire insertion hole 22 </ b> A of the second terminal block 22 are respectively directed to the flat central portion 15 </ b> B of the instrument main body 15.
Thereby, the electric wire 32 drawn out to the internal space 31 of the instrument main body 15 is straightened to the electric wire insertion hole 21 </ b> A of the first terminal block 21 and the electric wire insertion hole 22 </ b> A of the second terminal block 22 in the internal space 31 of the instrument main body 15. And can be connected to the first terminal block 21 and the second terminal block 22.

  As shown in FIGS. 5 and 6, an engagement recess 35 is provided on the outer peripheral surface 16 of the instrument body 15. The engaging recess 35 is provided in the first groove 36 formed along the generatrix of the outer peripheral surface 16, the second groove 37 continuing from the first groove 36 in the circumferential direction of the outer peripheral surface 16, and the first groove 36. The first protrusion 38 and the second protrusion 39 provided in the second groove portion 37 are provided.

The first groove portion 36 has a lower end portion 36A opened at the lower edge portion 16A of the outer peripheral surface 16, and is extended so as to continue upward along the generatrix of the outer peripheral surface 16 by a predetermined dimension L1. 15 is formed in a groove shape so as to be recessed from the outer peripheral surface 16 toward the radially inner side.
The second groove portion 37 is continuous to the upper end portion 36 </ b> B of the first groove portion 36, extends so as to be continuous by a predetermined dimension L <b> 2 in the circumferential direction of the outer peripheral surface 16, and is directed radially inward of the instrument body 15. Thus, it is formed in a groove shape so as to be recessed from the outer peripheral surface 16.

The first protrusion 38 protrudes from the substantially vertical center in the bottom surface 36 </ b> C of the first groove portion 36 toward the radially outer side of the instrument main body 15 and extends so as to be continuous in the circumferential direction of the outer peripheral surface 16. Yes.
The amount of protrusion of the first protrusion 38 is determined so that when the cover 25 is attached to the instrument body 15, the engaging convex portion 41 of the cover 25 gets over the first protrusion 38.

  The second protrusion 39 protrudes upward along the generatrix direction of the outer peripheral surface 16 at the bottom side 37 </ b> A of the second groove portion 37. The amount of protrusion of the second protrusion 39 is determined so that when the cover 25 is attached to the instrument body 15, the engaging convex portion 41 of the cover 25 gets over the second protrusion 39.

At least the outer peripheral surface 16 of the instrument body 15 is covered with a cover 25 (see FIG. 1). The cover 25 is formed in a substantially cylindrical shape so as to cover the outer peripheral surface 16 of the instrument body 15 from the outside, and an engagement convex portion 41 is provided on the inner peripheral surface 26.
The engaging convex portion 41 protrudes from the inner peripheral surface 26 of the engaging convex portion 41 toward the radially outer side of the cover 25 so as to engage with the engaging concave portion 35.

Next, an example in which the cover 25 is assembled to the instrument body 15 will be described with reference to FIGS.
In FIG. 7, the cover 25 is aligned with the mounting position of the instrument main body 15, and the aligned cover 25 is pushed up toward the instrument main body 15 as indicated by an arrow A.

  In FIG. 6, the engagement convex portion 41 of the cover 25 is inserted into the first groove portion 36 of the instrument body 15 as indicated by an arrow B. By continuously pushing up the cover 25, the engaging convex portion 41 gets over the first protrusion 38 and reaches the upper end portion 36 </ b> B of the first groove portion 36 as indicated by an arrow C.

  In this state, by rotating the cover 25 as indicated by the arrow D, the engaging convex portion 41 moves along the second groove portion 37 as indicated by the arrow D. The engagement protrusion 41 climbs over the second protrusion 39 as indicated by arrow E, reaches the end of the second groove 37 (that is, the attachment position of the cover 25), and the cover 25 is assembled to the instrument body 15.

In the state where the cover 25 is assembled to the instrument body 15, the movement of the engagement convex portion 41 of the cover 25 in the circumferential direction can be suppressed by the second protrusion 39 of the second groove portion 37. Therefore, the cover 25 can be made difficult to turn by the second protrusion 39.
Furthermore, even when the cover 25 rotates and the engagement convex portion 41 reaches the upper end portion 36B of the second groove portion 37, the first protrusion 38 can suppress the engagement convex portion 41 from moving in the generatrix direction. Thereby, it is possible to prevent the cover 25 from dropping from the instrument body 15.

  As described above, the lighting fixture 10 includes the bottomed cylindrical fixture main body 15 attached to the construction material 11, the power source unit 18 and the light source unit 23 provided on the fixture main body 15, and at least the outer peripheral surface of the fixture main body 15. And a substantially cylindrical cover 25 that covers 16. Furthermore, the lighting fixture 10 includes an engagement concave portion 35 provided on the outer peripheral surface 16 of the fixture main body 15 and an engagement convex portion 41 provided on the inner peripheral surface 26 of the cover 25 and engaged with the engagement concave portion 35. I have.

  The engaging recess 35 includes a first groove portion 36 that is continuous with the predetermined dimension L1 along the generatrix of the outer peripheral surface 16 and a second groove portion that is continuous with the first groove portion 36 and is continuous with the predetermined dimension L2 in the circumferential direction of the outer peripheral surface 16. 37. Further, the engagement recess 35 is provided in the first groove portion 36, provided in the first protrusion 38 over which the engagement protrusion 41 rides along the radial direction of the instrument body 15, and in the second groove portion 37, and on the outer peripheral surface 16. And a second protrusion 39 over which the engaging convex portion 41 rides along the generatrix direction.

  Moreover, preferably, the lighting fixture 10 has the 1st terminal block 21 and the 2nd terminal block 22 provided in the fixture main body 15, The electric wire insertion hole 21A of the 1st terminal block 21 and the electric wire of the 2nd terminal block 22 The insertion hole 22 </ b> A is directed to the flat central portion 15 </ b> B of the instrument body 15.

Next, a modification of the embodiment will be described with reference to FIG.
In addition, in the modification of embodiment, the same code | symbol is attached | subjected about the component similar to the lighting fixture 10 of embodiment, and description is abbreviate | omitted.

(Modification)
As shown in FIG. 8, the engagement recess 45 of the modified example is provided with a second protrusion 46 instead of the second protrusion 39 of the embodiment, and other configurations are the same as those of the engagement recess 35 of the first embodiment. It is. The second protrusion 46 protrudes from the bottom surface 37 </ b> B of the second groove portion 37 toward the outer peripheral surface 16.
When the cover 25 is rotated to the assembly position, the engaging convex portion 41 gets over the second protrusion 46 and reaches the end of the second groove portion 37 (that is, the attachment position of the cover 25). The cover 25 is assembled.

In addition, the lighting fixture of this invention is not limited to embodiment mentioned above, A change, improvement, etc. are possible suitably.
For example, the lighting fixture, construction material, fixture main body, power supply unit, first terminal block, second terminal block, light source unit, cover, engagement recess, first groove portion, second groove portion, first protrusion used in the above embodiment The shapes and configurations of the second protrusion and the engaging projection are not limited to those illustrated, and can be changed as appropriate.

DESCRIPTION OF SYMBOLS 10 Lighting fixture 11 Construction material 15 Instrument main body 15B Plane center part of instrument main body 16 Outer peripheral surface 18 Power supply part 21 1st terminal block 21A Wire insertion hole of 1st terminal block 22 2nd terminal block 22A Wire insertion hole of 2nd terminal block 23 Light source part 25 Cover 26 Inner peripheral surface 35, 45 Engaging concave part 36 First groove part 37 Second groove part 38 First protrusion 39, 46 Second protrusion 41 Engaging convex part L1, L2 Predetermined dimensions

Claims (2)

A bottomed cylindrical instrument body attached to the construction material;
A power source and a light source provided in the instrument body;
A substantially cylindrical cover covering at least the outer peripheral surface of the instrument body;
An engagement recess provided in the outer peripheral surface of the instrument body;
An engagement convex portion provided on an inner peripheral surface of the cover and engaged with the engagement concave portion,
The engaging recess is
A first groove portion having a predetermined dimension continuous along a generatrix of the outer peripheral surface;
A second groove portion that is continuous with the first groove portion and is continuous with a predetermined dimension in a circumferential direction of the outer peripheral surface;
A first protrusion provided in the first groove portion, over which the engaging convex portion rides along a radial direction of the instrument body;
A lighting fixture comprising: a second protrusion provided in the second groove portion and over which the engagement convex portion rides along a generatrix direction of the outer peripheral surface. The lighting fixture according to claim 1,
A first terminal block and a second terminal block provided on the instrument body;
The electric wire insertion hole of the said 1st terminal block and the electric wire insertion hole of the said 2nd terminal block are the lighting fixtures orient | assigned to the plane center part of the said fixture main body.

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