JPH01137512A - Lighting appliance - Google Patents

Abstract

PURPOSE: To support fluorescent lamps stably, by inserting rubbers into gaps between intermediate crooked parts of the fluorescent lamps and opposite bulb tips. CONSTITUTION: In the fluorescent lamp 1, a pair of U-shaped bulb 11, 11 are aligned in one plane, and intermediate portions 12, 12 are connected to form an intermediate crooked part 13, then both end parts 14, 14 are closed with filaments being sealed, further a reinforcing buffer member 2 is inserted into a gap d between the intermediate crooked part 13 and an opposite bulb tip 16. The buffer members are made of, for example, silicone rubber, and also they are transparent. Therefore, compressive pressure added to the U-shaped bulbs 11 is carried by the buffer members 2, and bending stress hardly generates in the intermediate crooked parts 13. Thus, the fluorescent lamps can be supported stably, and the dangerous property of break of the fluorescent lamps can be diminished.

Description

DETAILED DESCRIPTION OF THE INVENTION [Object of the Invention] (Industrial Field of Application) The present invention relates to a lighting fixture using a single-end fluorescent lamp having a cap portion only on one end side.

(Prior Art) Lighting equipment using a one-eye metal fluorescent lamp has been widely used. In order to support the fluorescent lamp of such a lighting device, it is necessary to use a spring-like support member to hold the slanted bulb, which would cause the fluorescent lamp to fall if it were only supported by the socket.

Among such fluorescent lamps, O-shaped or U-shaped fluorescent lamps are mechanically strong because their bulbs are firmly fixed. In lighting equipment using such fluorescent lamps, there is almost no need to consider supporting the lamp.

(Problem to be Solved by the Invention) However, in the M-shaped fluorescent lamp, the middle ends of a pair of U-shaped fluorescent lamps whose tips are aligned are connected to each other, and both ends are oriented in the same direction. The bulbs are closed by a stem, and in order to improve light distribution and make the bulbs more compact, most bulbs are spaced as narrowly as possible. In lighting equipment using such fluorescent lamps, it is necessary to consider support for the lamp.

That is, when attaching or detaching a fluorescent lamp to a lighting fixture, the bulb is held in place by a spring support member, but the support member is first pushed out to accommodate the bulb, and after the bulb is placed, the support member is released. In this case, the support member suddenly hits the bulb, and the impact compression pressure applied to the bulb causes strong bending stress in the connected intermediate bending part, which may lead to breakage from the intermediate bending part. In addition, in order to strengthen the support of fluorescent lamps, it is necessary to increase the springiness of the support member, but if the support member has high springiness, strong compressive pressure will be applied, so it will not be difficult to attach the fluorescent lamp. Therefore, a local load is applied to the bulb, leading to breakage at the intermediate bend.

Such problems are not limited to the M-shaped fluorescent lamp described above, but are present in most fluorescent lamps in which strong bending stress can be generated at the intermediate bent portion.

Moreover, such a problem occurs more prominently as the fluorescent lamp has a longer light emitting section.

The present invention has been made in view of the above problems, and its object is to provide a lighting fixture that can support a fluorescent lamp with high stability and reduce the risk of damage to the fluorescent lamp.

[Configuration of the Invention (Means for Solving the Problems)] In the lighting fixture of the present invention, the discharge path is bent and arranged in alignment on both base portions or one end side, and the intermediate bent portion on the base side is connected to the bulb. A single-eyed fluorescent lamp formed by interconnecting each other and having individual bulbs arranged close to each other in a planar manner, and intervening in the gap between the intermediate bent portion of the fluorescent lamp and the tip of the bulb on the opposite side. a buffer member provided on the lower surface thereof, a device main body including the fluorescent lamp parallel to the opening so that the fluorescent lamp can serve as a surface light source; A socket portion into which both base portions of the fluorescent lamp are attached, and a pair of elastics provided on the fixture body and supporting the fluorescent lamp with the buffer member sandwiched therebetween from both ends on the other end side of the fluorescent lamp. The present invention is characterized by comprising: a support member having a support member having a support member;

(Function) The lighting equipment of the present invention has a buffer member interposed in the gap between the intermediate bent portion of the fluorescent lamp and the tip of the bulb on the opposite side, and this y1
Since the support members are arranged to sandwich the support member, the fluorescent lamp can be stably supported near the bulb tip, which has relatively mechanical strength when viewed partially. Also,
Even if the support member suddenly clamps the bulb when the lamp is installed, there is almost no risk of the bulb being damaged because the compression pressure is carried by the support member.

(Embodiment) An embodiment of the present invention will be described with reference to FIGS. 1 and 2.

1 is a fluorescent lamp, 2 is a buffer member sandwiched between the fluorescent lamp 1, and 3 is a cap portion of the fluorescent lamp 1 at the -@ portion. The fluorescent lamp 1 has a pair of U-shaped bulbs 11.11 arranged side by side on the same plane, connecting the middle part 12.12 to form a curved part 13, and closing both ends 14.14. The filament 15 is sealed, and a buffer member 2 is interposed for reinforcement in the gap d between the intermediate bent portion 13 and the bulb tip f4A portion 16 on the opposite side.

The buffer member 2 is made of, for example, silicone rubber and is transparent, and is interposed between the tips of the pair of U-shaped bulbs 11.11. Regarding the material of the above buffer member,
Any material may be used as long as it has a low coefficient of thermal expansion and elasticity that can withstand heat. Furthermore, since the buffer member is transparent, it does not obstruct light generated from the rung. The gfFr member is interposed in the gap between the U-shaped valves 11 and 11 on both sides and is attached, but it may also be detachable.

The base part 3 has a bottomed long cylindrical body 31 with four wooden pin terminals 3.
3 is provided in a protruding manner, and the intermediate portion 12.12 and both end portions 14.14 of the opening surface are wired and fixed with an adhesive (not shown), and a lead wire (not shown) is connected to the pin terminal 33. Then, the lamp body 1 is heated to harden the silicone rubber stock solution, thereby forming the buffer member 2.

21 has an opening 22 on the lower surface and a cross-shaped louver 22a equipped with a well-known locking means in this opening 22, has a top plate 23 on the upper surface, and the pair of fluorescent lamps 1 can serve as a surface light source. This is a box-shaped device main body in which the fluorescent lamps 1 are alternately housed parallel to the opening 22.

This appliance body 21 is embedded in a hole provided in the ceiling 21a.

On the top plate 23, one ballast 24 corresponding to each fluorescent lamp 1, that is, two ballasts in total, are arranged.

Reference numeral 25 designates socket portions which are provided alternately under the top plate 23 of the appliance main body 21 and into which the base portions 3 of the fluorescent lamps 1 are mounted.

26 is provided with a screw under the top plate 23 of the device main body 21,
This is a support member made of a pair of metal plates that supports the fluorescent lamp 1 with the buffer member in between from both ends on the other end side of the fluorescent lamp 1.

When this fluorescent lamp 1 is attached to the appliance body 21, the support member 26 springs back onto the U-shaped bulb 11.

Since the support member 26 has a spring property, the impact upon attachment is great. However, a buffer member is interposed between the U-shaped valves 11.11, and the buffer member 2 and each support member 2
6.26 are lined up in a straight line, so the torque applied to the cap part 3 is small.

Therefore, the compressive pressure applied to the U-shaped valve 11 is carried by the buffer member 2, causing almost no bending stress in the intermediate bent portion 13. Moreover, glass is weak against bending stress but strong against compressive pressure, so even though the intermediate bent portion 13 is blown out and the mechanical strength is reduced, it can withstand considerably strong compressive pressure and will not break. In addition, although the lighting equipment of this example can provide the same illumination as a lighting equipment that lights four 11-shaped fluorescent lamps, there is only one discharge path for the fluorescent lamps, and there are no ballasts, etc. Only two lighting devices are required, making it easy to downsize the entire fixture.

Further, since the support member primarily contacts the side portion of the bulb, the support member is not noticeable when looking inside the lighting fixture, resulting in excellent aesthetics.

[Effects of the Invention] In the lighting equipment of the present invention, rubber is interposed in the gap between the intermediate bent portion of the fluorescent lamp and the tip of the bulb on the opposite side, and the support member supports the bulb of the fluorescent lamp in a positional relationship that sandwiches the rubber. Therefore, even if the support member suddenly pinches the bulb when the lamp is mounted, the rubber will bear most of the compression pressure and there is no risk of the bulb being damaged. Furthermore, even while the fluorescent lamp is being mounted, the load applied to the bulb near the base due to the compression pressure is reduced, and the fluorescent lamp can be stably supported. Therefore, the fluorescent lamp can be easily removed and the work efficiency is improved. It also improves the reliability of fluorescent lamps6.

[Brief explanation of the drawing]

FIG. 1 is a bottom view showing the first embodiment of the present invention, FIG. 2 is a sectional view taken along line II in FIG. 1, and FIG.
4 is a sectional view taken along line A, and FIG. 4 is a sectional view taken along line BB in FIG. DESCRIPTION OF SYMBOLS 1... Fluorescent lamp, 2... Buffer member, 3... Base part, 11... Bulb, 13... Intermediate bending part, 21... Instrument body, 22...
- Opening part, 25... socket part 26... support member. Patent Applicant Toshiba Nazai Co., Ltd. Agent Patent Attorney Ono 1) Yoshihiro Diagram 4 Procedural Amendment Portion (“Voluntary”) 4. Agent

Claims (1)

[Claims] (1) The discharge path is bent so that both caps are aligned on one end, and the intermediate bent portion on the cap side is formed by connecting the bulbs, and the bulbs are arranged close to each other in a planar shape. a single-eye metal fluorescent lamp arranged; a buffer member interposed in a gap between an intermediate bent part of the fluorescent lamp and a tip end of the bulb on the opposite side; an opening in the front surface, and the fluorescent lamp serves as a surface light source; a fixture body containing the fluorescent lamp parallel to the opening; a socket provided in the fixture body to which both caps of the fluorescent lamp are attached; and a pair of elastic support members supporting the fluorescent lamp with the buffer member in between from both ends of the other end of the fluorescent lamp.