JPH0559709U - lighting equipment - Google Patents

Abstract

(57) [Abstract] [Purpose] To provide a lighting fixture which has an excellent heat dissipation effect and which is easy to mount because the fixture body is hard to tilt. A box-shaped instrument body 1 having a heat dissipation opening 8 in a top portion 7, and a mounting horizontal rod 2 which is provided across the heat dissipation opening 8 and has a mounting portion 12 in the center thereof, A pair of ballasts 3, which are separately arranged on both ends of the mounting horizontal rod 2 of the instrument body 1.
4 and.

Description

[Detailed description of the device]

[0001]

[Industrial applications]

 This invention relates to a lighting fixture.

[0002]

[Prior Art]

 The first conventional example is shown in the figure. That is, in this lighting fixture, the mounting hole 42 and the power supply hole 43 are formed in the center of the top portion 41 of the main body 40 of the fixture-shaped cylindrical body. As shown in FIG. 4, the second conventional example has a box shape instead of the dome-shaped cylindrical shape of the first conventional example, and the same parts are designated by the same reference numerals.

As shown in FIGS. 5 and 6, the third conventional example has a heat dissipation opening 44 formed in the ceiling 41 in the second conventional example, and a pair of mounting holes 45 and one A power supply hole 43 is formed and a ballast 46 is provided at one side edge. Reference numeral 47 is a lamp, and 48 is a suspension bolt attached to the mounting hole 45.

[0004]

[Problems to be solved by the device]

 The first conventional example and the second conventional example have the drawback that the temperature rise of the electric parts in the instrument body 40 is large because it is difficult to dissipate heat in the instrument body 40. The third conventional example has a heat dissipation effect due to the heat dissipation opening 44, but is unbalanced due to the large weight of the ballast 46, and the fixture body 40 tends to tilt in the direction of the arrow in FIG. 6 and difficult to mount. There was a drawback.

Therefore, an object of the present invention is to provide a lighting fixture which has an excellent heat dissipation effect and which is easy to mount because the fixture body is not inclined.

[0006]

[Means for Solving the Problems]

 The lighting device of the present invention comprises a box-shaped device body having a heat dissipation opening at the top, a mounting horizontal rod provided across the heat dissipation opening and having a mounting part at the center, and The equipment main body is provided with a pair of ballasts which are separately arranged at both ends of the mounting horizontal rod.

[0007]

[Action]

 According to the structure of the present invention, the instrument body can be attached by attaching the attachment portion to the attachment member such as the hanging bolt, but the pair of stabilizers are separated from both sides of the attachment horizontal rod with respect to the attachment portion. Since it is installed as a balance, the balance is improved and the instrument body does not tilt easily. Therefore, it is easy to attach the instrument body. Moreover, since it has a heat dissipation opening, the heat dissipation effect is good and the temperature rise of the stored parts can be suppressed.

[0008]

【Example】

 An embodiment of this invention will be described with reference to FIGS. That is, the illuminator includes a fixture body 1, a mounting horizontal rod 2, and a pair of stabilizers 3 and 4. The instrument body 1 is box-shaped and has a heat dissipation opening 8 on the top 7. Device of Example 1 The main body 1 is an embedded type of a ceiling (not shown), and a collar 9 is formed at the lower opening edge portion for engaging with a lower edge portion of an embedded hole (not shown). There is. A pair of U-shaped projecting portions 10 for accommodating a ballast are formed on both sides of the top portion 7 by folding back the upper ends of the side pieces, and heat dissipation holes 11 are formed at both ends thereof.

The mounting horizontal rod 2 is provided so as to straddle the heat dissipation opening 8 and has a mounting portion 12 at the center, but in the embodiment, a rod-shaped rod having a U-shaped cross section is provided between the convex portions 10. The end pieces 13 are formed at both ends by bending, and the end pieces 13 are attached to the convex portion 10 by a mounting tool or the like. Further, the mounting portion 12 has a daruma-shaped hole as an example. A terminal block 14 is provided in the vicinity of the mounting portion 12 of the mounting horizontal rod 2, and is connected through the heat dissipation opening 8.

The pair of ballasts 3 and 4 are separately arranged on both ends of the mounting horizontal rod 2 of the instrument body 1. It is housed in the convex portion 10 so as to intersect with the longitudinal direction of the rod 2 and is attached by the attaching screw 15. The lamps 5 and 6 are, for example, single-ended fluorescent lamps, and are attached to a lamp socket (not shown) provided inside the fixture body 1 so as to be disposed below the ballasts 3 and 4. Has been done. Further, a pair of reflectors 16 and 17 are provided on the rear side of the lamps 5 and 6 so as to thermally partition the lamps 5 and 6 and the ballasts 3 and 4, respectively.

According to this embodiment, the instrument body 1 is attached by attaching the attachment portion 12 to the suspension bolt 18 with the nut 19. In this case, since the pair of stabilizers 3 and 4 are separately arranged on both ends of the mounting rod 2 with respect to the mounting portion 12, the balance is improved and the instrument body 1 is less likely to tilt, and therefore the instrument body 1 is easily attached. Moreover, since the heat dissipation opening 8 is provided, the heat dissipation effect is good and the temperature rise of the stored parts can be suppressed.

Particularly, the lamps 5 and 6 are separated from the ballasts 3 and 4 by the reflectors 16 and 17, the lamps 5 and 6 are radiated from the heat radiation opening 8 as shown by arrows, and the ballasts 3 and 4 are radiated. Since the heat is radiated from 11, the temperature rise can be suppressed without mutual interference of heat of the lamps 5, 6 and the ballasts 3, 4. It should be noted that this lighting fixture can also be applied to the case where it is attached to a mounting member other than the hanging bolt 18. A plurality of pairs of lamps 5 and 6 may be provided, but a ring-shaped lamp may be used. In this case, it is preferable to dispose one or a plurality of ring-shaped lamps so that the centers thereof are located on the vertical line of the mounting portion 12.

[0013]

[Effect of the device]

 According to the lighting fixture of the present invention, a box-shaped fixture main body having a heat dissipation opening at the top, and a mounting rod that is provided across the heat dissipation opening and has a mounting part at the center. Since the equipment main body is provided with a pair of ballasts which are separately arranged on both end sides of the attachment horizontal rod of the equipment main body, the balance when attaching the attachment portion to the attachment member such as the hanging bolt is improved, and the equipment main body is It is difficult to tilt and therefore the instrument body is easy to attach. Moreover, since it has a heat dissipation opening, it has a good heat dissipation effect and can suppress the temperature rise of the stored parts.

[Brief description of drawings]

FIG. 1 is a perspective view of an embodiment of the present invention.

FIG. 2 is a sectional view thereof.

FIG. 3 is a perspective view of a first conventional example.

FIG. 4 is a perspective view of a second conventional example.

FIG. 5 is a perspective view of a third conventional example.

FIG. 6 is a sectional view thereof.

[Explanation of symbols]

 1 Instrument main body 2 Mounting horizontal rod 3, 4 Ballast 7 Top 8 Heat dissipation opening 12 Mounting

Claims (1)

[Scope of utility model registration request] 1. A box-shaped instrument main body having a heat dissipation opening at the top, a mounting horizontal rod provided across the heat dissipation opening and having a mounting part at the center, and the instrument main body. 2. A lighting fixture comprising: a pair of ballasts, which are separately arranged on both ends of the mounting horizontal rod.