JPS6348888Y2 - - Google Patents

Description

[Detailed explanation of the idea] [Purpose of invention] (Industrial application field) TECHNICAL FIELD The present invention relates to lighting equipment and relates to shades.

(Prior Art) In recent years, with the trend toward thinner lighting equipment, attempts have been made to reduce the height and thickness of shades. As a means of thinning the plate, it is conceivable to form a flat sheet as shown in FIG. 1 by vacuum forming or the like.

(Problems to be solved by the invention) In the shade 1 which is vacuum-formed from a flat sheet and has a rectangular structure as shown in Fig. There is a problem that not only are the parts different, but also that the internal equipment can be seen through, impairing the appearance. Also Sade 1
If the top opening is smaller than the external shape of the shade 1, only the shade 1 can be seen from the outside, resulting in a simple design, which can be used for multiple purposes, and has the advantage of high lighting efficiency as there is no light blocking object. However, on the other hand, if the shape of the shade 1 is rectangular, molding distortion is likely to occur in the shade 1, and there is a problem that the shade 1 is weak against twisting. For example, when shade 1 is integrally molded using a milky white acrylic resin sheet with a thickness of 2 mm,
The material thickness of the corner portion 2 after molding was 0.1 to 0.3 mm, which was about 1/10 of the thickness of the lower surface 3 and the circumferential surface 4.

The present invention was developed in view of the above-mentioned problems, and in order to achieve a thinner synthetic resin shade, the top opening, rectangular periphery, and bottom are integrally molded from a single synthetic resin flat sheet. The four vertical corners of the shade are formed into flat rising surfaces,
Prevents distortion and thinning due to sink marks after molding,
The object of the present invention is to provide a lighting fixture in which the light transmittance of the shade is made uniform and the synthetic resin shade can be made thinner.

[Structure of the idea]

(Means for Solving the Problems) The lighting fixture of the present invention is formed by integrally molding the fixture body to which the lamp is attached, and one synthetic resin flat sheet, and has an opening on the top surface and a square surrounding area. and a bottom portion, and a shade that covers the lamp and is attached to the fixture body, and is characterized in that the shade has planar rising surfaces at four vertical corners. be.

(Function) In the lighting equipment of the present invention, there is no part where the development rate of the synthetic resin material becomes particularly large when integrally molding the shade, the material thickness does not become thinner at the four corners, etc., and the overall light transmittance is reduced. In addition, the planar raised surfaces formed on the periphery can prevent distortion due to sink marks and increase the strength against twisting.

(Embodiment) The configuration of an embodiment of the present invention will be explained with reference to FIGS. 1 to 5 of the drawings.

5 is the device body, sockets 6, 7, stabilizer 8,
Lighting devices such as a switch 9 and a glow socket 11 to which a glow lamp 10 is attached, and a spring support fitting 12 are attached. A straight tube fluorescent lamp 13 is mounted between the sockets 6 and 7. Further, a shade suspension spring 14 is supported by the spring support fitting 12.

Reference numeral 15 denotes a shade made by integrally molding a synthetic resin flat sheet by vacuum forming, and includes a bottom part 16, a peripheral part 17, and a top opening 18 opened inward from the peripheral part 17. ing. and,
This peripheral portion 17 is formed into a rectangular shape, and the four vertical corners are chamfered to form a planar rising surface 19. Furthermore, the ridgeline portions of this peripheral portion 17 and the bottom surface portion 16 are also chamfered to form an annular slope. Surface part 20
is formed. Further, the upper part of the peripheral part 17 is contracted inward from the middle, and an upper peripheral part 17a and a lower peripheral part 17b are formed with an annular stepped part 21 interposed therebetween. Further, the upper surface opening 18 is opened leaving an annular horizontal edge 22 around the periphery, and this opening edge is raised upward to form a rising edge 23.

24 is a decorative frame, and the decorative frame material 24a has a U-shaped cross section.
The vertical corner is chamfered and the rising surface 25
The corner frame member 24b is assembled integrally with a decorative frame attachment fitting 26, and is configured to be circumscribed on the upper circumferential surface portion 17a of the shade 15.

The decorative frame mounting bracket 26 is a U-shaped annular body whose cross section opens upward, and the inner piece 27 is circumscribed by the rising edge 23 of the opening 18 of the shade 15, and the bottom part 42 is supported on the horizontal edge 22. At the same time, the packing material 28 is inserted into the inner sole, and the outer piece 29 is bent outward from the middle, and this bent edge 30
The decorative frame 24 is supported on top and attached with screws. And the lower edge of the decorative frame 24 and the shade 1
A gap α is interposed between the step portions 21 of No. 5.

Further, two pairs of spring receivers 32 are attached to opposing inner surfaces of the long side of the rising edge 23 of the shade 15.

The spring receiving fitting 32 is attached to the decorative frame fitting 26 through a mounting hole 35 with a screw 33 and a nut 34 via the rising edge 23 of the shade 15.
and a receiving portion 37 in which a partially opened elongated hole 36 is formed that projects inward and is engaged with the shade suspension spring 14. Further, the decorative frame mounting bracket 26 and the rising edge 23 of the shade 15 have mounting holes 3, respectively, at positions that match the mounting holes 35 of the spring holder 32.
8 and 39 are formed.

Then, when the shade suspension spring 14 attached to the appliance body 5 is engaged with the elongated hole 36 of the spring holder 32 and the shade 15 is suspended from the appliance body 5, the shade 15 is bent downward around the appliance body 5. The peripheral edge portion 40 is inserted into the U-shaped opening of the decorative frame attachment fitting 26, and the lower opening edge 41 is press-fitted into the packing material 28 and sealed.

Next, the operation of this embodiment will be explained.

When molding the shade 15, the rising edge 23 and horizontal edge 22 of the upper opening 18, the upper circumference 17a, the annular step 21, the lower circumference 17b, and the bottom are integrally formed by vacuum forming a synthetic resin flat sheet. The four corners of the upper and lower circumferential surfaces 17a and 17b are chamfered to form rising surfaces 19, and the lower circumferential surface 17b and the bottom surface are Since the ridgeline portion between the portions 16 is chamfered to form the annular inclined surface portion 20, there are few portions where the expansion rate of the material is particularly large during integral molding, and the material thickness does not become thinner at the corner portions. Further, the annular step portion 21 and the annular horizontal edge portion 22 formed on the peripheral portion 17 make it difficult for molding distortion to occur, and the strength against twisting is also increased.

In addition, in order to prevent the lamp image from appearing when lit, the distance l between the lamp 13 and the bottom part 16 of the shade 15 must be approximately 20 mm, and the height of the shade 15 must be approximately 20 mm.
H ₁ is the minimum of about 50 mm, so the height H of the entire lighting equipment is 70 mm or more, but there is a step 21 in the middle.
interposes, and the lower circumferential surface portion 17b protrudes outward, so the external height _H2 is approximately 30 mm, which is approximately 1/2 of the actual height, making it less heavy when installed on a low ceiling. .

Also, the decorative frame 24 is a shade 1 as shown in FIG.
Since the decorative frame 24 is assembled to the decorative frame mounting bracket 26 separately from the shade 15 and then attached to the shade 15, assembly workability is good. Also, since the packing material 28 is inserted inside the decorative frame mounting bracket 26, there is no risk of the corners being deformed when the fixture body 5 is attached, as in the past. Also, by supporting the decorative frame mounting bracket 26, to which the decorative frame 24 has already been attached, on the horizontal edge 22 of the shade 15, the decorative frame mounting bracket 26
The respective mounting holes 38, 39 for mounting the respective components can be positioned.

Next, the structure of another embodiment will be explained with reference to FIGS. 6 and 7.

It has a structure in which the outer periphery of the decorative frame 24 is formed to protrude outward from the lower peripheral surface portion 17b, and the four vertical corners are chamfered to form a planar rising surface 25, and the structure of the other parts is And the action is the same as in the previous example.

(Effects of the invention) According to the invention, the shade that covers the lamp and is attached to the main body of the device is formed by integrally molding a single synthetic resin flat sheet, and has an opening on the top surface, a rectangular periphery, and a bottom surface. Therefore,
When the shade is integrally molded, the four corners where the expansion rate is greatest are flat, and the corners on both sides of the rising surface are obtuse angles, so there is less chance of thinning, preventing distortion due to sink marks after molding, and preventing twisting. On the other hand, it has strength, can prevent thinning, makes the light transmittance of the shade uniform throughout, makes it possible to make the synthetic resin shade thinner, and improves the appearance.

[Brief explanation of the drawing]

Fig. 1 is a perspective view of a conventional lighting fixture, Fig. 2 is a perspective view of a lighting fixture showing an embodiment of the present invention, Fig. 3 is a partially cutaway side view of the same, and Fig. 4 is a perspective view of the same as the above. FIG. 5 is an exploded perspective view of the decorative frame and shade, FIG. 6 is a perspective view of a lighting fixture showing another embodiment, and FIG. 7 is an enlarged vertical sectional front view of a portion of the same. be. 5... Appliance body, 13... Lamp, 15... Shade, 16... Bottom part, 17... Surrounding part, 18...
...Opening, 19...Rising surface.

Claims (1)

[Claims for Utility Model Registration] The lamp is formed by integrally molding the main body of the device to which the lamp is attached and a single flat plate sheet made of synthetic resin, and has an opening on the top surface, a rectangular peripheral portion, and a bottom portion. 1. A lighting equipment comprising: a shade which is attached to the equipment main body while covering the lighting equipment; and a planar rising surface is formed at four vertical corners of the lighting equipment.