JPS62243203A - Discharge lamp apparatus - 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 [Field of Industrial Application] The present invention relates to a discharge lamp such as a fluorescent lamp having a curved arc tube, and a device for lighting the discharge lamp, which is arranged close to a lighting device.

[Conventional technology]

BACKGROUND OF THE INVENTION Compact fluorescent lamps and other compact fluorescent lamps have become popular in recent years.

In a light bulb type fluorescent lamp, the inside of the outer bulb is an airtight space,
Here, a partially open luminous tube is provided. The so-called vacuum double tube system is being actively developed, taking advantage of advantages such as dual luminous efficiency.

FIG. 6 shows a conventional device of this type disclosed in Japanese Patent Application Laid-Open No. 58-197653. In the figure, (1) is an outer tube bulb, the inside of which is an airtight space with a stem or end plate (3), and (2) is an arc tube that has an opening Qυ in a part thereof. The end plate (3) is provided with an exhaust pipe (c) (not shown) for exhausting air on the opposite side from the normal arc tube (2), and (c) is an electrode. (4) is a lighting device including a ballast and lighting tube, etc.; (5) is a lighting device (4)
(6) is a base.

In the above-described well-constructed device, when power is supplied, a discharge current is supplied from one lighting device (4) to two arc tubes (2), and one arc tube lights up.

At this time, the end plate (3) is made of ceramic or other airtight material, but since it supports the outer tube pulp pro 1 and the arc tube (2) and is in contact with this discharge space, It is heated by the heat generated by the arc tube. Furthermore, the area near the electrode (2) of one arc tube (2) has the highest temperature among all the arc tubes, and the temperature of the end plate (3) also increases due to this. In this way, the temperature of the surface of the end plate (3) on the arc tube side increases, and this is due to conduction.

Since the temperature reaches the opposite surface, the temperature of the surface on the lighting device side becomes considerably high, warming the internal space of the housing (4).

[Problem that the invention seeks to solve]

In the conventional device, the internal space of the lighting device (4) is warmed by the heat of the end plate (3).
) will be used in higher atmospheres.

For this reason, the lighting device (4) needed to reduce the temperature rise due to self-heating, and there were problems such as having to take measures to increase the size of the two lighting devices (4) and the housing (5). .

The present invention has been made to solve the above-mentioned problems, and aims to improve the heat dissipation of the end plate (3) and reduce the heat brought into the interior of the housing by the end plate (3). purpose.

[Means for solving problems]

In the device according to the present invention, at least a part of the support portion covering the end plate for fixing and holding the arc tube is exposed outside from the internal space of the housing which houses a lighting device for lighting the arc tube. It is something.

[Effect]

In the present invention, the support part allows a part of the support part to be brought out from the internal space formed by the housing, so that heat is radiated from the end plate or a part of the arc tube to the external space, and the temperature of the end plate is reduced. By making the thermal relationship between the end plate or the arc tube and the inside of the housing loose, the inflow of heat into the interior space of the housing is reduced.

[Embodiments of the invention]

FIG. 1 shows an embodiment of the device according to the invention.

In the figure, ... is the outer tube pulp, C2) is the arc tube, (3) is the end plate, (4) is the lighting device, (5) is the housing, (6)
is the base.

(7) is a support portion which is fixed to the outer tube pulp by adhesion or caulking, and which fixes and supports the housing (5) by the above-mentioned method or other means. In addition, the housing (5
) indicates a dividing part where the housing (5) can be divided and the nine lighting devices (4) can be assembled into two parts after being fully housed, and if necessary, they can be provided at appropriate positions.

It is assumed that in the apparatus configured as described above, the arc tube (2) is discharged and lit by the nine lighting device (4). End plate (3
) increases in temperature due to the heat generated by one arc tube as described above, but the heat is radiated to the outside through the support part (?l?), and not all of it is housed inside the housing (5). Since the part is external, the transfer of heat to the internal space of the housing (5) is reduced. Here.

The support portion (7) may be made of a metal material that has been subjected to a surface treatment such as painting so that the heat of the end plate (3) is well conducted and released to the outside.

In this way the flow of heat into the interior of the housing (5) is reduced.

Next, other embodiments will be described.

In FIG. 2, ('r) is a front view, and (b) is a bottom view showing only the main parts. In this embodiment, one arc tube has no outer tube pulp and has four legs connecting two curved arc tubes.

In the figure, the support part (7) fully supports the end plate (3) and functions to attach it to the housing (5), and is provided at the bottom of the housing (5) as shown in Figure 2 (b). From the opening to the end plate (
3) is attached to the housing (5) by exposing at least a part of it to the outside and folding it back as shown by the broken line.

The end plate (3) may have its entire surface on the arc tube (2) side covered by the holder (7), or may be partially covered and the rest exposed to the outside air. . Housing (5
) (see figure (a)) is provided if the housing (5) needs to be completely divided during one assembly. This embodiment also makes it possible to reduce the inflow of heat into the end plate (3).

Fig. 3 shows still another embodiment, Fig. 3 (a) is a front view, and Fig. 3 (b) is a bottom view showing only the main parts. The case where the ends are sealed without being sealed is shown. Support 5 (7) is.

For example, use an adhesive such as resin (not shown) to attach the arc tube 121'
1&: Fixed, held.

The support part (7) is inserted into the lower opening of the housing (5) as shown in FIG. 9 (b), and is supported by folding back the broken line part. At this time, a part of the area near the electrode (c) where the temperature becomes high in the arc tube 9 is exposed to the outside by the support part (7), so that the heat flow into the housing (5) is reduced.

In the above embodiments, the housing and the end plate or the arc tube are not completely integrated, and a portion of the housing is exposed to the outside, so that it is possible to reduce the inflow of heat into the housing.

In the above embodiment, the case where one arc tube has four legs has been described, but the invention is not limited to this.
Furthermore, the shape of the arc tube is not limited to the embodiment.

In addition to the lighting device (4) that uses a ballast and lighting tube as shown in Figure 4, the lighting device (4) uses a high-frequency generating means that lights an arc tube at high frequency, as shown in Figure 5. But that's fine. The latter is especially effective because it includes semiconductor components that are particularly sensitive to heat.

The housing (5) is made of a material such as metal or resin, and is provided with means such as protrusions for attaching or fixing the lighting device, if necessary.

The lighting device (4) may have ventilation holes for heat dissipation or may have a filler sealed inside to lower the temperature of the lighting device (4).

The support part (7) is also made of the above-mentioned material, and although other means may be used to attach it to the housing (5), in short, the arc tube or end plate is supported in its entirety, and its external part is attached to the housing (5). By releasing a portion of the heat, the flow of heat into the I.Using (5) is reduced.

It is not necessary to completely cover the end plates, etc. The shape is also not limited to the shapes of the embodiments, such as circular and rectangular shapes.

The device of the invention further includes a lighting device (4) and an end plate (3).

Alternatively, a spacer or the like may be provided for thermal isolation between the support part (7) and the support part (7).

The lighting device may be any device other than those shown in FIGS. 4 and 5 as long as it is capable of supplying appropriate power to one arc tube and lighting it. Although a light bulb-shaped cap is shown, power may be supplied by other means.

〔Effect of the invention〕

As described above, according to the device of the present invention, at least a part of the support part that covers the end plate that fixes and holds the arc tube is exposed to the outside of the housing, so that heat can be radiated from this support part, so that heat can be transferred to the inside of the housing. can reduce the influx of

[Brief explanation of drawings]

FIG. 1 is a front view showing one embodiment of the present invention, FIG. 2 is a front view of another embodiment of the present invention, <W) is a front view, ←) is a bottom view thereof, and FIG. 3 is a front view of an embodiment of the present invention. Furthermore, another example will be shown, and 0
) is a front view, (b) is a bottom view, and FIGS. 4 and 5 are circuit diagrams of a lighting device applicable to the device of the present invention, respectively.
FIG. 6 is a perspective view showing a conventional device. In the figure, (2) is an arc tube, (3) is an end plate, and (4) is a lighting device. (5) shows the housing, and (7) shows the support part. Note that the same reference numerals in Figure 1 indicate the same or equivalent parts.

Claims (4)

[Claims] (1) A curved arc tube in which two electrodes are arranged in the same direction, an end plate that fixes and holds this arc tube, and an end plate that is arranged on the opposite side of the arc tube with this end plate as a border. , comprising a lighting device for lighting the arc tube, a housing for accommodating the lighting device, and a support portion for covering the end plate, with at least a portion of the support portion extending outside the housing. A discharge lamp device characterized by: (2) The discharge lamp device according to claim 1, wherein the support portion is configured to hold the end plate. (3) The discharge lamp device according to claim 1, wherein the support portion has the function of an end plate and also serves as an end plate. (4) The housing has an opening in its lower part, and the support part is inserted through the opening and attached to the housing. The discharge lamp device described in .