JPS63225470A - fluorescent lamp device - Google Patents

Abstract

(57) [Summary] This bulletin contains application data before electronic filing, so abstract data is not recorded.

Description

[Detailed Description of the Invention] [Objective of the Invention] (Industrial Application Field) The present invention relates to a bent type bulb in which a plurality of U-shaped bulbs are connected to each other at their end sides to form one lightning path. fluorescent lamp,
and a fluorescent lamp 1ti formed by attaching this bent fluorescent lamp to a cover having a base and housing lighting circuit components.
Regarding l.

(Prior art) In general, in fluorescent lamps, when the bulb length is increased, the luminous length increases and luminous collapse increases, and when the bulb diameter is decreased or the input power is increased, the tube wall load increases and the luminous efficiency decreases. improves.

In order to put such a lamp into practice, a bent fluorescent lamp with a meandering discharge path can be used to reduce the bulb diameter and increase the light emitting length, making it possible to make it smaller and more compact. It has the advantage of being able to be accommodated in a limited space.

To make a fluorescent lamp into a bent shape, there is a method of bending a straight glass bulb in the middle and forming it into a U-shape, W-shape, saddle shape, etc. There is a limit to the number of bends.

On the other hand, if a plurality of U-shaped bulbs are connected by their end side walls to form a single continuous meandering electric path, there will be no bending direction or number of bends. ! There is an advantage that even a meandering electric circuit having a rough shape can be easily manufactured.

Like the latter mentioned above, bent fluorescent lamps, which are made by connecting multiple U-shaped bulbs with their end sidewalls to form one continuous meandering electric path, can further improve efficiency. Then, the load on the pipe wall 9 rises too much and the amount of heat generated by the valve increases. Therefore, when pure mercury is used as a mercury vapor generation source, the mercury vapor pressure becomes too high, leading to a decrease in luminous efficiency.

For this reason, it is advantageous to use amalgam, which has a low mercury vapor pressure, in place of pure mercury.

(Problem to be solved by the invention) However, in the past, amalgam was stored using an exhaust pipe near 1 m or at the end where the electrode was sealed, so the amalgam easily received heat from the electrode, and the ambient temperature If the temperature is too high, mercury vapor pressure may not be suppressed effectively.
Furthermore, if efficiency is to be increased, it becomes difficult to suppress the mercury vapor pressure to an appropriate level.

Incidentally, such a bent fluorescent lamp is attached to a cover fitted with a screw-in base for an incandescent lamp, and is widely used as a fluorescent lamp device compatible with an incandescent lamp.

In this case, the other end of the cover with a screw cap attached to one end is closed with a closing member, and the bent fluorescent lamp is attached to the closing member, or the bent fluorescent lamp is attached to the closing member. A structure such as covering the lamp with a glove is adopted.

However, in such fluorescent lamps, in order to obtain the specified brightness, it is necessary to install a high-brightness, high-efficiency bent fluorescent lamp in a small, limited space, and the bulb diameter is narrow and the light emitting Since a long bent fluorescent lamp is used, the electrodes generate a large amount of heat.

For this reason, if amalgam is stored near the electrode or in an exhaust pipe at the end where the electrode is sealed, the amalgam is likely to receive heat from the electrode, and mercury vapor pressure may not be suppressed effectively.

In particular, if the above-mentioned fluorescent lamp is covered with a glove, the temperature of the bulb will rise significantly due to poor heat dissipation performance.
In addition to the heat from the electrodes, the amalgam receives heat from the bulb, and it is expected that the temperature of the amalgam will rise too much.

The present invention aims to provide a bent fluorescent lamp that can maintain the temperature of amalgam at an appropriate operating temperature, and a fluorescent lamp device using the same.

[Structure of the Invention (Means for Solving Problems)] The first aspect of the present invention is a bent bulb in which a plurality of U-shaped bulbs are connected to each other at their end sides to form one discharge path. The light lamp is characterized in that the unsealed end of the U-shaped bulb is extended to provide an extension, and the amalgam is housed in the extension.

Further, the second aspect of the present invention is to close a cover provided with a base with a closing member, house a lighting circuit component in this cover, and install a plurality of U-shaped valves in the closing member so that the ends thereof are connected to each other on the sides thereof. In a fluorescent lamp device equipped with bent fluorescent lamps that are connected to form one discharge path, an extension is provided at the end of the U-shaped bulb that is not sealed with an electrode, and an amalgam is applied to the extension. It is characterized by accommodating.

(Function) According to the first configuration, the end of the U-shaped bulb where the electrode is not sealed is extended to provide an extension, and the amalgam is housed in this extension, so this position is the position of the electrode during lighting. Since it is less affected by heat generation and is located far from the discharge path, the temperature rise is small, so the temperature of the amalgam is kept in the optimum range, and mercury vapor pressure is effectively suppressed.

In addition, according to the second configuration, even if the amount of heat generated by the electrode increases due to the placement of a high-brightness, high-efficiency bent fluorescent lamp in a limited space to obtain a predetermined brightness, the electrode can be Since the amalgam is housed in the extension formed at the end where it is not provided, the amalgam is less affected by the heat generated by the electrode, and is located away from the discharge path, preventing excessive temperature rise of the amalgam. , mercury vapor pressure is effectively suppressed.

(Example) The present invention will be described below based on a first example shown in FIGS. 1 to 4.

In the figure (\, 1 is an envelope, which is composed of a cover 2 made of gold ri!S and a glove 3 made of synthetic resin.The cover 2 of this envelope 1 has a base. 4 is attached, and this base 4 is of a screw-in type, for example, E26 type.Furthermore, one plate-shaped partition member 5 made of, for example, synthetic resin is attached to the other end opening of the cover 2. The inside of the cover 2 is separated from the outside by the partition member 5 to form a room 6. Inside the room G on the side of the cover 2, lighting circuit components such as a stable vJ7 and a lighting tube (not shown) are installed. etc. are accommodated.

Ventilation holes 8 are formed in the side wall of the cover 2 to communicate the room 6 with outside air.

On the other hand, the glove 3 is made of a milky white or colorless transparent synthetic resin and has a cylindrical shape with one end open and the other end closed. Another plate-shaped partition member 9 made of, for example, synthetic resin is attached to the opening of the glove 3.
This partition member 9 constitutes a room 10 between the inside of the glove 3 and the outside. Room 10 on this glove 3 side
A bent fluorescent lamp 11 is housed inside.

The partition member 5 on the cover 2 side and the partition member 9 on the glove 3 side are opposed to each other with a gap between them, and these gaps constitute an air insulation layer 12 whose periphery is open to the outside air. ing. Note that the interval between the air insulation layers 12 is 3 to 10 seconds.
The partition member 5 on the side of the cover 2 and the partition member 9 on the side of the glove 3 are connected to the connector 1, such as a screw, while ensuring the air insulation layer 12 having the above-mentioned spacing.
They are connected by 3.

As shown in FIGS. 3 and 4, the bent fluorescent lamp 11 includes, for example, three U-shaped bulbs 14a.

14b and 14c are joined at their ends, and the U-shaped bulbs 14a and 140 located at both ends each have an electrode 15.15 sealed at one end.

Each of these U-shaped valves 14a, 14b and 14c
The side wall at the end was blown out, and the blown out areas were mutually separated! !
! These fused parts 16
．． 16, and form a meandering discharge path as a whole.

In addition, each U-shaped valve 14a, 14b and 140
A phosphor coating (not shown) is applied to the inner surface of the tube.

In such a bent fluorescent lamp 11, the electrode 15
The length of both ends of the U-shaped valve 141) that does not have
U-shaped bulbs 14a and 1 on both sides enclosing electrodes 15
4C, and therefore the electrode 1
Both ends of the U-shaped bulb 14b that do not have a welded portion 16.
16 and an extension 17.17.

One extension part 17 is closed by sealing a dummy stem 18 shown in FIG.
9 is provided protrudingly. This m-tube 19 houses an amalgam 20, as shown in FIG. This amalgam 20 is held by a constricted portion 21 formed at the base of the m-tube 19, and is supported so as not to enter the bulb.

The bent fluorescent lamp 11 thus configured is housed in the globe 3 with the ends of the U-shaped bulbs 14a, 14b and 14c facing the partition member 9.

This bent fluorescent lamp 11 is connected to the partition member 9.
is fixed. That is, the lamp holder 22 is integrally formed with the partition member 9, and the lamp holder 2
2 is a holding recess 23 that accommodates extensions 17.17 formed at both ends of the U-shaped bulb 14b that does not have the electric conductor wA15.
．． It has 23. A clamping plate 24 is removably attached to the lamp holder 22 with screws 25.
4 as well as a clamping recess 26.26 which accommodates the extension 17.17.
is formed. Therefore, these lamp holders 2
2, and the clamping recess 26 of the clamping plate 24.
．． The fluorescent lamp 11 is supported by the partition member 9 by sandwiching the extensions 17.17 formed at both ends of the U-shaped bulb 14b with the screws 26 and tightening the screws 25.

When the lamp 11 is fixed in this way, the m-tube 19 containing the amalgam 20 passes through the insertion hole 27 formed in the partition member 9 and faces the air insulation layer 12.
The amalgam 20 is cooled by air in the air insulation 1i9!12.

The operation of the above embodiment with such a configuration will be explained.

A chamber 6 on the side of the cover 2 that accommodates lighting circuit components such as a ballast 7 and a lighting tube (not shown), and a bent fluorescent lamp 1
The room 10 on the glove 3 side that accommodates the partition member 5
and 9, mutual thermal interference between the ballast 7 and the fluorescent lamp 11 is prevented during lighting.

In particular, since the air heat insulation layer 12 is formed between the partition member 5 on the cover 2 side and the partition member 9 on the glove 3 side, this air heat insulation layer W412 blocks heat, increasing the heat insulation effect.

In addition, since the cover 2 is formed with ventilation holes 8, the heat generated by the ballast 7 is released to the outside through these ventilation holes 8, thereby preventing the temperature of the ballast 7 from rising. Ru.

On the other hand, in the fluorescent lamp 11, extensions 17.17 formed at both ends of a U-shaped bulb 14b without electrodes are connected to a lamp holder 22 formed on the partition member 9 and a clamping plate 24 fixed thereto with screws 25. Since the partition member 9 is clamped and mechanically supported, the temperature rise of the partition member 9 is reduced.

That is, both ends of the U-shaped bulb 14b having no electrodes do not directly receive radiant heat from the fi pole 15.15 during lighting, and the extensions 17.
Since the portions 17 are located away from the meandering electric path, they hardly receive heat from the discharge, and therefore these extensions 17 and 17 are the lowest temperature points in the entire lamp 11. Since such an extension 17.47 is held between the lamp holder 22 and the holding plate 24, very little heat is transferred to the partition member 9 through the lamp holder 22, and the temperature rise in the partition member 9 is reduced. Therefore, the partition member 9 is not restricted to be made of a special heat-resistant material.

Therefore, the partition member 9 can be manufactured using inexpensive materials.

Furthermore, since a thin tube 19 is provided protruding from the extension portion 17 where the temperature rise is small, and the amalgam 20 is accommodated in this thin tube 19,
The amalgam 20 does not directly receive radiant heat from the electrodes 15.15 during lighting, and since the thin tube 19 is further away from the discharge path than the extension 17, it is difficult for the amalgam to receive heat from the discharge. 20 can be suppressed to a small level. Therefore, amalgam 20
Excessive temperature rise is prevented.

In particular, in this embodiment, the thin tube 1 containing the amalgam 20 is
9 passes through the insertion hole 27 formed in the partition member 9 and faces the air insulation layer 12, so that the amalgam 20 is cooled by the air in the air insulation layer 12. Amalgam 20 because it replaces the outside air
can be maintained at the optimum operating temperature, and the mercury vapor pressure can be effectively controlled.

Note that the present invention is not limited to the first embodiment described above.

That is, in the first embodiment, three U-shaped valves 1 are used.
4a, 14b, and 14c, an extension 17.17 was formed on the U-shaped bulb 14b without an electrode, and the extension 17.17 was attached to the partition member 9. As shown in the embodiment, two U-shaped bulbs 30a, 30b are connected, and an extension 31.31 is formed at the end of each of these bulbs 30a, 30b that does not have an electrode. may be attached to the partition member 9.

Further, in the above embodiment, the thin tube 19 is provided protruding from the extension portion 17,
Although the amalgam 20 is housed in the thin tube 19 so that the thin tube 19 faces the air insulation layer 12, it is possible to prevent the temperature of the amalgam 20 from rising even if the amalgam 20 is housed directly in the extension 17. However, the amalgam 20 is not necessarily placed in front of the air heat insulating layer 12.

Furthermore, in the above embodiment, the partition member 5 on the cover 2 side and the partition member 9 on the glove 3 fill are configured separately,
Although these are connected by screws 13, these two partition members may be integrally molded with an air heat insulating layer 12.

Furthermore, the shape of the globe is not limited to a cylindrical shape, but may be spherical or the like.

Furthermore, the present invention is not limited to covering the bent fluorescent lamp 11 with the globe 3, but may instead cover the bent fluorescent lamp 11 with a third embodiment shown in FIG.

That is, in the third embodiment, the globe 3 is not used and the bent fluorescent lamp 11 is exposed.

Therefore, the partition members 5 and 9 do not substantially partition the space, but are members that close the opening of the cover 2 on the side opposite to the base 4. Accordingly, in the present invention, the closure members are used as a general concept of the partition members. The term ``50'' shall be used to include the partition member.

In such a third embodiment, the bent fluorescent lamp 1
Since the lamp 1 is not covered by the globe 3 and is exposed, heat radiation is better than in the first and second embodiments, and the temperature rise of the lamp is lower.

However, when such a high-luminance, high-efficiency bent fluorescent lamp as described above is arranged in a limited space in order to obtain a predetermined brightness, the amount of heat generated by the electrodes becomes large. As a countermeasure for this, an extension 1 is formed at the end where the electrode 15.15 is not provided.
If the amalgam 20 is accommodated in the electrode 15.15, the amalgam 20 will be less affected by the heat generated by the electrode 15.
Since it is located away from the discharge path, excessive temperature rise of the amalgam 20 is prevented, and mercury vapor pressure can be effectively suppressed.

[Effects of the Invention] As explained above, according to the first invention, the end portion of the U-shaped bulb where the electrode is not sealed is extended to provide an extension portion;
Since the amalgam is housed in this extension, this position is not affected by the heat generated by the heavy surroundings during lighting, and is also away from the discharge path, so the temperature rise is small, and therefore the amalgam's excessive temperature rise is prevented. mercury vapor pressure is effectively suppressed.

Furthermore, according to the second invention, the temperature of the amalgam can be prevented from rising even though bent fluorescent lamps have become more bright and efficient and the electrodes generate a large amount of heat. Therefore, it is possible to effectively suppress mercury vapor pressure when applied to this type of fluorescent lamp device.

[Brief explanation of the drawing]

1 to 4 show a first embodiment of the present invention, in which FIG. 1 is an overall sectional view, FIG. 2 is a sectional view taken along line II-II in FIG. 1, and FIG. 3 is a sectional view of the lamp. FIG. 4 is an exploded perspective view showing the configuration and installation; FIG. 4 is an exploded sectional view of the entire structure; FIG. FIG. 3 is an overall sectional view showing an actual flow example of No. 3; 1... Envelope, 2... Cover, 3... Glove,
4... Cap, 5... Partition member, 7... Stabilizer, 8
... Vent hole, 9... Partition member, 11... Bent fluorescent lamp, 12... Air insulation layer, 14a, 14
b, 14c 130a, 30b-U-shaped bulb, 15...electrode, 16...fusion part, 17.31...
・Extension part, 19... Thin tube, 20... Amalgam, 2
2... Lamp holder, 24... Holding plate, 50...
Occlusion member. Figure 1 Figure 2 Figure 3 Figure 4 Figure 5

Claims (6)

[Claims] (1) In a bent fluorescent lamp in which a plurality of U-shaped bulbs are connected at the side surfaces of their ends to form one discharge path, an extension is provided at the end of the U-shaped bulb that is not sealed with an electrode. A bent fluorescent lamp characterized in that the extension part is provided with an amalgam and an amalgam is housed in the extension part. (2) A bent fluorescent lamp according to claim 1, characterized in that a thin tube is provided protruding from the extension portion, and the amalgam is housed within the thin tube. (3) A cover equipped with a cap is closed with a closing member, a lighting circuit component is accommodated within this cover, and a plurality of U-shaped valves are connected to the closing member at the side surfaces of their ends to form a single valve. A fluorescent lamp device equipped with a bent fluorescent lamp forming a discharge path, characterized in that an extension is provided at the end of the U-shaped bulb that is not sealed with an electrode, and an amalgam is housed in the extension. Fluorescent lamp device. (4) The fluorescent lamp according to claim 3, wherein the bent fluorescent lamp is surrounded by a glove, and the glove side and the cover side are separated by a partition member corresponding to the closing member. lamp device. (5) A fluorescent lamp device according to claim 3 or 4, characterized in that a thin tube is provided protruding from the extension portion, and the amalgam is accommodated in the thin tube. (6) Claim 3, characterized in that an air insulation layer connected to the outside air is formed in the closing member or partition member, and the extension portion or capillary tube containing the amalgam is located in this air insulation layer. Or the fluorescent lamp device according to item 4 or 5.