JPH0338885Y2 - - Google Patents

Description

[Detailed Description of the Invention] [Industrial Application Field] The present invention relates to a multi-lamp type lighting fixture using fluorescent lamps and incandescent lamps, in which an arm projects obliquely upward from a central body.

[Conventional technology]

For conventional multi-lamp lighting equipment in which the connecting arms of the lighting bodies protrude obliquely upward from the side of the central body, the sixth section regarding the fixing means for the base of each arm.
There were some that adopted the fixing means shown in Figures and Figure 7. However, in these cases, for example, in the one shown in FIG. 6, the fixed part 4 of the arm 40
1, special die-cast parts are used depending on the number of lights, and in the case of the one shown in FIG. 7, it is necessary to use individually pressed steel plate parts 42 of complicated shapes, etc. There was little consideration given to oriented toward a more rational form of production.

[Problem that the invention attempts to solve]

In the case of so-called multi-lamp lighting equipment in which the lamp body is attached to the tip of an arm that protrudes radially from the central body, if the arm is made to protrude horizontally from the central body, the weight of the light will cause the body side to A bending moment acts on the base of the arm, making it easy for the arm to sag. Therefore, in order to maintain the horizontality of each lamp body, some lamps are made to have their arms protrude slightly diagonally upward from the central body, or they are intentionally made to protrude diagonally upwards for design reasons. It will be done.

Regarding the fixation of the base of the arm of the multi-lamp type lighting equipment as described above, there were some that adopted the structure shown in Figs. 6 and 7. However, in these conventional methods, the arm fixing parts for the method shown in Fig. 6 are dedicated die-cast parts 41 according to the number of lights.
etc., which caused problems in terms of mold costs and improving production efficiency for small lot production. Further, although the system shown in FIG. 7 has the advantage of allowing parts to be shared even when the number of lamps is different, there are problems such as an increase in the number of parts. In view of the above, the purpose of this invention is to share the arm fixing parts between fixtures with different numbers of lights, reduce the number of parts, reduce parts costs and assembly costs, and reduce the number of parts and assembly costs. The aim is to improve responsiveness and enable efficient production.

[Means for solving problems]

The above purpose is to use an arm fixing part formed in a dish shape as shown in Fig. 1, or a main body with a dish-shaped drawing process on the bottom as shown in Fig. This is achieved by adopting a method of fixing the base.

Here, the inclination angle of the sloped portion is adjusted to the protruding inclination angle of the arm, and a screw insertion hole or an internally threaded screw hole for fixing the arm is bored in the sloped portion. Since the projected area of the hole itself is generally small, this hole can be punched in large numbers at the same time in the same press process. Punching is performed at all positions at the same time as shown in Figure 1. As a result of the above, even if the number of lights is different, for example 3 lights, 4 lights, 5 lights, etc., it can be used completely in common.
Moreover, the number of parts can be reduced.

[Effect]

The arm is fixed by a fastening member such as a screw by bringing the base of the arm into contact with the inner side of the slope of a dish-shaped arm fixing part having an inner slope matching the protruding inclination angle of the arm. According to this method, by taking advantage of the advantage of machining that multiple holes can be drilled simultaneously on the sloped part of the arm fixing part, it is possible to make common holes for all the fixtures with different numbers of lights planned to be used in advance. In order to make the arm fixing part usable, holes are drilled radially at predetermined positions at equal intervals from the center of the arm fixing part, thereby making it possible to share the parts.

〔Example〕

An embodiment of the present invention will be described below with reference to FIGS. 1, 2, and 3.

In FIG. 1, reference numeral 1 denotes an arm fixing component formed in the shape of a circular plate. 2 is the flat bottom part. 3 is the inclination angle θ that matches the protruding inclination angle θ of the arm 6 in FIG.
Slope section with Reference numerals 4 and 5 indicate screw holes or internally threaded screw holes for fixing the arm drilled in the slope portion. As an example, the one shown in Figure 1 has multiple screw insertion holes radially spaced at predetermined positions so that it can be used commonly for 3-light, 4-light, and 5-light fixtures. They were drilled at the same time. In other words, in the case of a 3-lamp fixture, the A-axis, D-axis,
Use screw insertion holes drilled at 120 degree intervals on the H axis, and in the case of a 4-lamp fixture, use screw insertion holes drilled at 120 degree intervals on the H axis.
Screw insertion holes drilled at 90 degree intervals on the F and I axes, and in the case of a 5-lamp fixture,
The arm is attached using screw insertion holes drilled at 72 degree intervals on the E, G, and J axes. The assembly method will be explained with reference to FIG. 6 is the arm. Although the arm shown in FIG. 2 is an example of an arm having a rectangular cross section, it may also have a circular cross section. 7 is the base of the arm. 8 and 9 are screw insertion holes drilled at the base.
10 and 11 are screws for fixing the arm to the arm fixing part 1; For 10 and 11, fastening parts such as rivets may be used instead of screws. 1
Reference numeral 2 denotes a central body having a substantially cylindrical shape, and arm insertion holes 14, 15, 16, and 17 for inserting the arm 6 therethrough are bored at predetermined positions on the side surface 13. The central body of FIG. 2 shows an example of a four-lamp fixture. 18 indicates the inside of the central body. 19 is ugly. First, after fitting the bushing 19 into the arm insertion holes 14, 15, 16, and 17, the arm 6
Insert the base part 7 of the arm fixing part 1 into the center body 12, press it from below so that the slope part 3 of the arm fixing part 1 comes into contact with the lower surface of the arm base, and then tighten the screws 10, 11.
Fix the base of the arm to the arm fixing part using the .
FIG. 3 is a sectional view of the main part after assembly, and in the state after assembly is completed, the arm fixing part 1 covers the lower end of the central body 12. Reference numeral 18 denotes the interior of the central body, and electrical components such as a changeover switch 20 are housed in this space. 21 is a lid for the upper opening of the central body. 22 is a hanging hook component fixed to the center of the lid. 23 is a connector that connects the arm fixing component 1 and the lid, and is fixed by fastening components such as screws shown at 24 and 25. 26 is a decorative cover removably attached to the bottom of the central body.
27 is the shaft. 28 is a fixture for the decorative cover. 29 is the rising part of the upper end of the decorative cover;
Positioning is achieved by fitting into a space 33 having a substantially triangular cross section formed between the lower sloped side 31 of the dish-shaped arm fixing component 1 and the lower end inner surface 32 of the central body 12.

Figure 4 shows a cylindrical body 3 as an application example of the present invention.
4, a dish-shaped slope portion 35 is integrally formed on the bottom surface of the device, and the same effect as that shown in FIG. 3 can be expected. That is, the screw insertion hole 3 formed in the slope portion 35
6, 37, etc., by drilling all the required holes at the same time in advance as shown in Fig. 1, and then drilling arm insertion holes 39, etc. at predetermined positions in the side part 38 according to the number of lights. It is possible to improve production efficiency in small lot production.

[Effect of idea]

(1) As shown in Figure 1, the arm fixing part is a single part, reducing parts cost and assembly cost.
Excellent economy.

(2) It can be used commonly for fixtures with different numbers of lights, and production efficiency can be improved even when producing a wide variety of products in small quantities.

(3) As shown in Figure 1, since the part is simple in shape, mold costs and processing costs can be reduced.

(4) Regarding the conventional products shown in Figures 6 and 7,
The bending moment force due to the load of the lamp at the end of the arm must be supported by the individual arm holding parts 43 in the one shown in FIG. 6, and by the individual connecting fittings 42 in the one shown in FIG. For this purpose, a high-strength member has been used, but in the one using the dish-shaped part of the present invention, the load is distributed over the entire arm fixing part, so the member can be made at a lower cost.

[Brief explanation of drawings]

Fig. 1 is a front and sectional view of the arm fixing part according to the present invention, Fig. 2 is an exploded perspective view of the main part of the device according to the invention, and Fig. 3 is a main part of the device according to the present invention in an assembled state. 4 is a cross-sectional view of the main parts of another application example of the present invention in an assembled state; FIG. 5 is a perspective view of a multi-lamp lighting fixture adopting the present invention; FIGS. 6 and 7
The figure shows an exploded perspective view of essential parts of a conventional example. 1...Dish-shaped arm fixing part, 3...Slope part,
4 and 5...Insertion hole or screw hole for arm fixing screw, 6...Arm, 12...Central body.

Claims (1)

[Scope of utility model registration request] A dish-shaped arm fixing part having a slope having the same inclination angle as the protruding inclination angle of the arm is housed inside the central body, and the arm base is inserted into the central body through an arm insertion hole drilled at a predetermined position on the side surface of the central body. A multi-lamp type lighting fixture in which the lower surface of the fitted arm base is brought into contact with the inside of the slope part of the above-mentioned arm fixing part, and the arm is fixed on the slope part using a fastening part such as a screw.