JPS60218759A - Fluorescent lamp device - Google Patents

Abstract

PURPOSE:To greatly improve rising characteristics during the initial stage of lighting by using a fluorescent lamp which is constituted of a stabilizer chamber and a lamp chamber and which has a main amalgam and a mercury getter. CONSTITUTION:A ventilation hole 27 which connects a stabilizer chamber 12 to the external atmosphere of an encircling case 1, is formed only in the area of the case 1 facing the stabilizer chamber 12. A lamp chamber 13 formed in the encircling case 1 is sealed up from both the encircling case 1 and the stabilizer chamber 12. In a fluorescent lamp 14 installed in the lamp chamber 12, the mercury vapor pressure of the emission tube during normal lighting is controlled by a main amalgam 29. In the high temperature area near the electrode of the emission tube, a mercury getter 31 is installed which absorbs floating mercury during suppression of the lamp and discharges the adsorbed mercury during starting of the lamp. Owing to the above constitution, rising of the optical output and following stabilization of the optical output can be performed at an early stage.

Description

DETAILED DESCRIPTION OF THE INVENTION [Technical Field of the Invention] The present invention relates to a fluorescent lamp device used to replace existing incandescent light bulbs.

(Technical Background of the Invention and Problems Thereof) This type of t-light lamp device includes a fluorescent lamp curved into a saddle shape in a ball bulb-shaped envelope with a base at one end, and A structure is known in which a choke coil type ballast is housed as a current limiting element for a fluorescent lamp.

By the way, in conventional devices, in order to prevent the temperature inside the envelope from rising while the lamp is lit, measures such as opening vent holes on the circumferential surface of the envelope are taken, but such vent holes do not exist. This poses a problem in terms of appearance, as well as foreign matter such as insects and dust easily entering the envelope and causing the light emitting surface to become dirty.

Therefore, in order to eliminate the above-mentioned ventilation hole from the envelope, that is, to make the envelope a sealed type, the present inventors set the mercury vapor pressure of the fluorescent lamp to about 6 x 10 degrees by using the main amalgam.
``We are trying to control the temperature to an appropriate value around mHQ.
When the temperature reaches 90'C, the mercury vapor pressure inside the lamp should be around the appropriate value above. However, an unexpected effect is that the fluorescent lamp is housed in a sealed envelope, so even if the outside temperature changes, the temperature inside the envelope will not change much. Therefore, it has been found that fluctuations in the light output of the fluorescent lamp are also smaller than when the fluorescent lamp is housed in an envelope having ventilation holes.

However, since the temperature of the above ballast increases slowly after starting compared to a fluorescent lamp, the temperature inside the envelope does not reach a temperature favorable for the operation of the main amalgam until the temperature of the ballast stabilizes. As a result, the rise of the optical output becomes poor. For this reason, it was considered to install a mercury getter that temporarily releases mercury into the lamp during the early stages of lighting, including during start-up, in the high-temperature part near the electrodes, but even if the mercury is released temporarily, Even if
If the temperature inside the envelope is unstable, the temperature of the main amalgam will not rise for a long time, so the released mercury will be adsorbed by the main amalgam, and as a result, during the initial transition period of lighting. There were problems such as a temporary drop in sales and power, and the effect of installing a mercury getter was lost.

Further, according to the above configuration, as the temperature of the ballast increases, organic substances such as mineral oil used in the manufacturing process decompose and evaporate into the envelope, so this organic substance adheres to the inner surface of the envelope. As a result, the light emitting surface becomes dirty and the appearance is significantly impaired, and the light output is also reduced.

[Purpose of the invention]

The present invention was made in view of these circumstances.
The concentration of the main amalgam is quickly stabilized, and the rise and subsequent stabilization of the optical output is carried out at an early stage, making it possible to greatly improve the start-up characteristics at the initial stage of lighting, while also reducing the temperature rise of the ballast. It is an object of the present invention to provide a fluorescent lamp device that requires a small amount of light and can prevent the envelope from being contaminated by organic matter generated from the ballast.

[Summary of the invention]

That is, in order to achieve the above object, the present invention provides ventilation holes only on the peripheral surface of the portion of the envelope facing the stabilizer housing chamber, which communicates the stabilizer housing chamber with the outside of the envelope. The lamp housing chamber inside this envelope is outside the envelope and □
The fluorescent lamp housed in this lamp housing chamber has a main amalgam that controls the mercury vapor pressure inside the arc tube during constant lighting. In addition, it is characterized by having a mercury book in a high-temperature part near the electrode of the luminescent tube, which adsorbs floating mercury in the luminous tube when the light is turned off, and releases the mercury at the time of starting.

[Embodiments of the invention]

The present invention will be explained below based on an embodiment shown in the drawings.

In the figure, reference numeral 1 denotes an envelope made of, for example, synthetic resin. 4, and its appearance resembles a ball-shaped incandescent light bulb. A chassis 5 is housed within the cover 3, and this chassis 5 has a cylindrical portion 6 at one end attached to the cover 3.
It is fixed to the cover 3 by inserting it into a through hole 1 formed at the top of the cover 3 and screwing the base 2 into the outer peripheral surface of the insertion end. A stabilizer case 8 as a partition member is provided at the tip of the arm portions 7, 7 which extend inside the cover 3 from the circle n portion 6. This stabilizer case 8
is composed of a circular partition plate 9 integrally formed between the distal ends of the arm part 7.7, and a box-shaped case body 10 fitted on the glove 4 side of this partition plate 9,
A through hole 11 is formed in the partition plate 9 and continues into the case body 10.

The outer circumferential R portion of the partition plate 9 is coaxially contacted with the inner circumferential surface of the cover 3, and due to this contact, the inner space of the envelope 1 is connected to the stabilizer storage chamber 12 in the cover 3 and the globe 4. It is partitioned into two spaces with a lamp storage chamber 13 on the side. The lamp housing chamber 13 is formed in an airtight space that is sealed from the ballast housing chamber 12 and the outside of the envelope 1.
A typical low-pressure mercury vapor discharge lamp (X-light lamp 14) is housed in the lamp housing chamber 13. The light tube 15 of the fluorescent lamp 14 includes a straight glass bulb. Both ends 16.1 (3) are bent into a substantially U-shape at the center between them, and this bent part 17 and both ends 16.16
approximately U in the direction approximately perpendicular to the plane containing the above U-shape.
It is curved in a letter shape, with both ends 16.16 and the curved part 11.
and are positioned adjacent to each other in the same direction, forming a generally saddle shape. A phosphor 18 is coated on the inner surface of the arc tube 15, and flare portions 20 of a mount 19 are visible at both ends 16 and 16, as shown in FIG. The stem tube 211 connected to the section 20 has internal leads @ 22 and 22 sealed, and these leads @ 211 are sealed.
A filament 1-23 serving as an electrode is connected between 22 and 22. In addition, the thin tube 2 led out from the stem tube 21 force t
4 is opened at the tip of the stem tube 21 close to the filament 23, and the arc tube 1 is passed through this thin tube 24.
Evacuation and sealing of non-uniform gases in the chamber 5 are performed.

Such a fluorescent lamp 14 is housed in the lamp storage chamber 13 in a □ posture with both end portions 16.16 and the curved portion 17 resting on the cover 3 side.
is fitted and held in a lamp holding portion 25 provided on the case body 10.

Moreover, in the stabilizer storage chamber 12 in the stabilizer case 8,
A choke coil type ballast 26 is housed and held,
This ballast 26 is connected in series between the base 2 and the fluorescent lamp 14. Then, on the side of the portion of the h-bar 3 facing the ballast housing chamber 12, there are ventilation holes 27 for communicating the ballast housing chamber 12 with the outside of the envelope 1.
is opened, and the ballast 26 in the ballast storage chamber 12 is cooled by outside air flowing in from the ventilation holes 21 . In addition, the code|symbol 28 is a lighting tube,
It is held by the lamp holding part 25 of the case body 10.

By the way, inside the arc tube 15 of the fluorescent lamp 14,
A main amalgam 29 is sealed to control the mercury vapor pressure inside the tube during steady lighting. This main amalgam 29 includes a thin tube 24 located closer to the tube end than the filament 23.
In this example, indium (
In), Bisma 2 (81).

An alloy in which tin (SO), lead (Pb), and these various metals are mixed in appropriate proportions, with mercury (Ha) added thereto is used. Note that instead of this main amalgam 29, first the amalgam-forming metal and mercury are separately placed in the thin tube 24.
The amalgam-forming metal may be sealed in the arc tube 15 and then amalgamated in the m tube 24.

In addition, a high-temperature portion closer to the filament 23 than the main amalgam 29, that is, in this embodiment, located between the filament 23 and the open end of the capillary tube 24, contains mercury.

A getter 30 is installed. The mercury getter 30 is made by depositing indium on the surface of a heat-resistant base 31 such as a metal plate made of nickel, iron, or stainless steel or a ceramic plate, and one end of this base 31 is attached to the inner lead. Welded to wire 22. Such a mercury getter 30 adsorbs floating mercury inside the arc tube 15 when the temperature inside the arc tube 15 is low, such as when the lamp is turned off, and conversely releases the adsorbed mercury into the tube when the lamp is turned on. ing.

In such a configuration, when the cap 2 is now inserted into the socket on the power supply side and the power supply voltage is applied to the luminous tube 15 to start it, the main amalgam 29 housed in the capillary tube 24 will be discharged into the fluorescent lamp 14 itself. The temperature rises under the influence of heat from the arc tube 15, and mercury is released into the arc tube 15. After the light output reaches a steady state, the mercury vapor pressure is controlled to a vapor pressure determined by the temperature of the installation part of the main amalgam 29, that is, a value around 6×10"sHQ where the ultraviolet ray conversion efficiency is the highest. .

On the other hand, when the fluorescent lamp 14 in such an operating state is turned off, the temperature of the part where the arc tube 15 and the main amalgam 29 are installed decreases, so that floating mercury in the arc tube 15 is removed from the main amalgam 29 in the thin tube 24. begins to be absorbed. In this case, since the opening of the capillary tube 24 is relatively narrow, the mercury adsorption speed of the main amalgam 29 is slowed down.
absorbs most of the floating mercury.

Therefore, when the arc tube 15 is restarted after the light is turned off, the mercury getter 30 that has adsorbed mercury is transferred to the adjacent filament 23.
In addition to being affected by heat from the arc tube, the temperature rapidly rises due to the impact of ions during discharge. Therefore, it is necessary to quickly supply a sufficient amount of mercury into the arc tube 15 to reduce the light output. The rise is almost instantaneous.

According to the fluorescent lamp device having such a configuration, the fluorescent lamp 14 is housed in the tightly sealed lamp housing chamber 13, so that the fluorescent lamp 14 is not affected by temperature changes outside the envelope 1. Therefore, fluctuations in light output become smaller. Furthermore, since the ballast 26 is cooled by the outside air flowing into the ballast storage chamber 12 through the ventilation holes 27, the temperature rise of the ballast 26 is suppressed. Also,
Inside the lamp housing chamber 13 is a ballast 2G with a slow temperature increase rate.
Since the lamp is not provided, the temperature inside the lamp housing chamber 13 quickly stabilizes to a value close to the temperature during steady lighting. Therefore, the time required for the main amalgam 29 within the capillary tube 24 to reach a temperature favorable for its operation is shortened, and the light output becomes stable more quickly.

Furthermore, since the temperature of the main amalgam 29 is quickly raised, most of the mercury released from the mercury getter 30 at the initial stage of lighting is not adsorbed by the main amalgam 29, and an extreme drop in light output can be prevented. .

Further, as described above, since the ballast 26 is cooled by the outside air flowing in from the vents 27, it is possible to suppress the decomposition and evaporation of organic matter such as mineral oil due to this temperature rise. Even if this organic matter evaporates, since the ballast housing chamber 12 and lamp housing chamber 13 are separated, this organic matter will not adhere to the inner surface of the globe 4, which serves as the light emitting surface. Since this organic matter is discharged to the outside through the ventilation holes 27, there is an advantage that the inside of the ballast storage chamber 12 is less contaminated.

In the above-described embodiment, the mercury getter is directly welded to the internal lead heel, but it may be electrically connected to the electrode only at the time of starting, for example, via a bimetal or the like.

In addition, the main amalgam is not limited to those housed in tubules,
For example, it may be fixed to the wall of the stem tube, or it may be enclosed within the arc tube so as to be freely movable by gravity.

The shape of the rough fluorescent lamp is not limited to the saddle shape, but may be U-shaped, and the shape of the envelope is not limited to the ball bulb shape.1 [Effects of the Invention] According to the present invention described in detail above, the ballast Since the storage chamber and lamp storage chamber are constructed in separate rooms, the temperature inside this lamp storage chamber is quickly stabilized to a value close to the temperature during steady lighting without being affected by the ballast, which has a slow temperature rise. do. Yo'-
), the vI period during which the main amalgam reaches a temperature favorable for its operation is also shorter, and the light output stabilizes more quickly.

In addition, since the main amalgam temperature rises quickly, most of the water roots released from the mercury getter at the initial stage of lighting are not absorbed by the main amalgam, which prevents an extreme drop in light output. I can do it. Furthermore, since the ballast is cooled by the outside air flowing in through the vent, decomposition and evaporation of organic matter such as mineral oil due to this temperature rise can be suppressed to a minimum. Even if this organic matter evaporates, the ballast housing chamber and lamp housing chamber are separated, so this organic matter will not adhere to the inner surface of the envelope, which is the light emitting surface, and this organic matter will Since it is discharged to the outside through the ventilation hole, there is an advantage that there is less contamination in the ballast housing chamber.

[Brief explanation of drawings]

The drawings show an embodiment of the present invention, in which Fig. 1 is a sectional view of the entire device, Fig. 2 is a plan view of the cover side, Fig. 3 is an exploded perspective view, and Fig. 4 is a diagram of the end of the fluorescent lamp. FIG. 1... Envelope, 2... Cap, 8... Partition member (
Stabilizer case), 12... Stabilizer storage chamber, 13...
Lamp housing chamber, 14... Fluorescent lamp, 26... Ballast, 27... Ventilation hole. 29...Main amalgam, 30...Mercury getter. Applicant's agent Patent attorney Takehiko Suzue Figure 1 Figure 2

Claims (1)

[Scope of Claims] A translucent outer container having a base, a partition member that partitions an internal space within the envelope into a lamp storage chamber and a ballast storage chamber, and a ballast storage chamber and a ballast storage chamber. It is equipped with a fluorescent lamp and a choke coil type ballast housed in a ballast housing chamber, and the ballast housing chamber and the outer enclosure are provided only on the peripheral surface of the portion of the envelope facing the ballast housing chamber. A ventilation hole is provided to communicate with the outside of the device, and the lamp housing chamber inside the envelope is formed into a sealed space that is sealed from the outside of the envelope and the ballast housing chamber. The housed fluorescent lamp uses a main amalgam to control the mercury vapor pressure inside the arc tube when it is turned on steadily, and the F!
A fluorescent lamp device characterized by having a mercury getter that adsorbs PI2 water starvation and releases the adsorbed mercury at startup.