JPS5824331Y2 - lighting equipment - Google Patents

Description

[Detailed Description of the Invention] This invention relates to lighting equipment such as downlights and spotlights.

Conventionally, in this type of lighting equipment, the main body that holds the lamp socket and the reflective shade that has a reflective surface are often formed separately due to their surface treatment and component attachment, and the assembly process requires assembly. It is extremely difficult to assemble due to high man-hours and poor workability.

This invention was devised in view of these points, and the object is to obtain a lighting fixture whose parts are easy to manufacture and whose assembly is easy.

In this invention, both the main body and the reflective hat are formed by combining the main body piece and the reflective hat piece, which are divided into two parts, so these can be easily manufactured by die-casting, etc., and the main body and the reflective hat can be easily made. Since the engaging protrusion and the engaging recess are engaged, the reflective hat piece can be integrated, the reflective hat can be connected to the main body, and the reflective hat can be connected to the main body by engaging and tightening the metal plate with the protrusion formed on the main body piece. It is constructed so that the main body pieces can be integrated at the same time.

An embodiment of this invention will be explained based on the drawings.

First, a main body 1 having a rectangular parallelepiped external shape and a reflecting shade 2 which expands downward are provided, but these are divided into two in the longitudinal direction and formed by combining a main body piece 3 and a reflecting shade piece 4. There is.

First, the main body piece 3 is manufactured by aluminum die-casting, and a protrusion 6 is formed on one side from the center of the joint edge 5, and a grooved line 7 is formed on the other side.

Therefore, by matching pieces of the same shape, the protrusion 6 and the groove 7 will fit together, and it is only necessary to manufacture one type of piece.

A cord insertion hole 9 into which the bushing 8 is fitted is formed in the upper center, and protrusions 11 having semicircular screw insertion portions 10 are formed protruding from both lower sides.

Further, a socket metal fitting 14 attached to a lamp socket 13 that holds a lamp 12 is provided inside and above the body piece 3.
A retaining rib 15 into which is inserted is formed.

Further, an engagement recess 16 is formed in the lower part of the interior of the main body piece 3 over the entire circumference thereof.

Next, the inner surface of the reflective shade 2 is composed of a reflective base surface 17 and a non-reflective surface 18, and the reflective base surface 1T is curved in one direction with a predetermined curvature surface, and is straight with respect to the generatrix in the longitudinal direction.

The reflective hat piece 4 divides the center of the non-reflective surface 18, and a protrusion 20 is formed on a portion of the joint edge 19 located on one side of the non-reflective surface 18. A groove 21 is formed in a portion corresponding to the other non-reflection surface 18.

Then, the upper part of the joining edge 19, that is, the reflective base 1
The divided part 7 has a lamp insertion hole 22 in the center and is formed so that a gap 33 is left when the reflective hat pieces 4 are put together.
A locking protrusion 25 is formed which joins each other.

Furthermore, an engaging protrusion 26 is formed above the reflective hat piece 4 and projects laterally.

A step 27 is formed at the lower edge of the reflective base surface 17 of the reflective shade piece 4 to project inward.

A lower edge 29 of a reflecting plate 28 serving as a reflective surface is bonded to this stepped portion 27, and the inner surface of the area near this lower edge 29 is adhered with an adhesive.
The bent portion 30 of the other reflecting plate 28 and the gap 23
It is joined inside.

At room temperature, there is a small gap between the upper part of the reflector 28 near the lamp 12 and the reflective base 17.
The reflector plate 28 is designed to expand when heated by the lamp 12 and come into close contact with the reflective base 17, so that an accurate reflective surface shape can be obtained.

Therefore, in assembling it, after adhering the reflector plate 28 to each of the reflector pieces 4, the reflector pieces 4 are brought together and the screws 31 are screwed into the holes 24 of the locking protrusions 25 to remove the reflection. Unified as Kasa 2.

At this time, the reflecting plate 28 whose upper part is in a free state is attached with the upper part also in a stable state because the bent portions 30 of the reflecting plate 28 come into contact with each other.

Next, the socket fitting 14 of the lamp socket 13 is inserted into the holding rib 15 of one of the main body pieces 3, and the engaging recess 16 of the main body piece 3 is engaged with the engaging protrusion 26 of the reflective shade 2.

Then, the cord 3 pulled out from the lamp socket 13
2 is inserted through the cord insertion hole 9 via the bush 8.

After that, another main body piece 3 is assembled, but this main body piece 3 also engages with the engaging protrusion 26 of the reflective shade 2, and holds the socket fitting 14 of the lamp socket 13, and also holds the bushing 8. do.

At this time, a bolt 34 with a head 33 positioned inward is attached to the screw insertion portion 10 in advance, and its shaft protrudes outward.

Next, a V-shaped crest 36 is provided which has a hole 35 into which these bolts 34 are inserted and which fits into the outer surface of the protrusion 11, and these crests 36 are tightened and fixed by nuts 37 on the left and right sides, respectively. , fix the main body piece 3.

Thereby, the reflective shade 2 and the main body 1 are integrated.

Note that the non-reflective surface 18 is coated with a paint or the like with low reflectance.
The outer surfaces of the reflective shade 2 and the main body 1 are painted in appropriate colors.

Next, a U-shaped support arm 39 sandwiched between two spring washers 38 is attached to the tip of the bolt 34 so as to be rotatable by a lock nut 40 with an appropriate force.

A flexible metal fitting (not shown) or the like is attached to the support arm 39 and fixed to a ceiling surface or the like.

The lamp 12 is a high-performance lamp such as a halogen lamp, and its calorific value is high.

Therefore, the reflecting plate 28 receives light from the lamp 12 and is heated, which causes it to expand and assume a shape that matches the reflecting base 17.

In other words, the reflector plate 28
If the developed size of the reflecting plate 28 is reduced by about 0.2 mm, and the thickness of the reflecting plate 28 is about 0.1 to 0.3 mm, it matches the shape of the reflecting base 17 which is close to the ideal curved surface as described above.

Regarding the temperature distribution at this time, since the temperature below the reflector plate 28 is 80 to 100 degrees Celsius, there is no need to use an adhesive with particularly high heat resistance;
The temperature can reach 50-170°C.

However, the temperature of the outer peripheral surface □ of the reflective shade 2 is about 70 to 80°C.

Note that the lower edge 29 of the reflector plate 28 may be held without using an adhesive by forming a retaining groove 41 in the reflective shade piece 4 as shown in FIG.

Therefore, as is clear from the shape of the reflection plate 28, the state of the reflected light becomes a rectangular light distribution that expands laterally.

Furthermore, in the above embodiment, a state in which the reflective shade piece 4 is provided with the locking protrusion 25 that integrates the two pieces is explained, but this is for convenience as the reflective shade piece 2 is integrated into the reflective shade piece 2 during the assembly process. Yes, there is no need to provide these locking protrusions 25 in practice.

In this invention, the main body and the reflective hat are formed by combining the main body piece and the reflective hat piece which are divided into two parts as described above, and the reflective hat has an engaging protrusion that protrudes laterally. The main body has four engaging parts that engage with the engaging protrusions, and each of the main body pieces has a protrusion through which a bolt is inserted, and a metal fitting that grips and fixes the protrusion. By simply fixing the crest fittings, it is possible to integrate the reflective hat pieces, connect the reflective hat and the main body, and integrate the main body pieces at the same time.This makes the structure simple and reduces assembly man-hours. Since the main body piece and the reflective hat piece, which are divided into two parts, can have the same shape, the number of types of parts is small and inventory management is easy.

[Brief explanation of drawings]

The drawings show one embodiment of this invention; Fig. 1 is a partially cutaway front view, Fig. 2 is a partially cutaway plan view, Fig. 3 is a bottom view, and Fig. 4 is a main body piece. 5 is a perspective view of a reflective hat piece, FIG. 6 is a partial end view of the reflective hat, FIG. 7 is an enlarged end view of a modified example thereof, and FIG. 8 is a perspective view of a metal fitting. be. 1...Main body, 2...Reflective shade, 3...
...Body piece, 4...Reflective cap piece, 11...
...Protrusion, 17...Lamp socket, 16...
...Engagement recess, 26...Engagement protrusion, 28.
...Reflector plate (reflective surface), 34...Bolt, 36...Crest metal fittings.

Claims (1)

[Scope of utility model registration request] A main body that holds a lamp socket is formed by combining two halves of the main body, and a reflective shade with a reflective surface is formed by combining two halves of the reflective shade. forming an engaging protrusion that extends to the main body, forming an engaging recess that engages with the engaging protrusion in the lower part of the main body, and forming a protrusion with a screw insertion part at a symmetrical position on the joint surface of the main body. A lighting device characterized in that it is provided with a crest fitting that grips and fixes the protrusion while engaging with a bolt protruding from the inside.