JP2011171087A - Single-base type lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To easily manufacture a single-based type lamp for low power suited for a high-pressure mercury lamp luminaire by eliminating the need troublesome design according to a focal point position, exhaust work for an outer tube, and chip-off work. <P>SOLUTION: In the single based-type lamp, a screw contact (5) for an Edison base (6) is directly attached to one end of the outer tube (2) storing a lamp body (L). In this case, as the lamp body (L), a ready-made ceramic metal halide lamp (11) is used with an arc tube (18) with capillaries (17A, 17B) on both ends of the light emitting part (16) being contained airtightly in a light transmitting tube (15) formed with a pinch sealed part (13) with a pair of feeders (12A, 12B) guided on one end side and an exhaust tube (14) on another end side chipped off. In addition, the feeders (12A, 12B) are welded to stem leads (3A, 3B) through a relay conductor (20) by aligning the light emitting part (16) to the light emitting point P designed beforehand. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to a one-piece lamp having a screw contact of an Edison cap directly attached to a lamp outer tube.

  High-pressure mercury lamps are commonly used as this type of single-ended lamps, but recently there has been an increasing demand for ceramic metal halide lamps that consume about half of the power consumption of high-pressure mercury lamps and have excellent illumination surface color characteristics. In addition, there is a high demand for replacing the conventionally used high-pressure mercury lamp with a ceramic metal halide lamp.

However, in general, a low-power ceramic metal halide lamp has a small size as compared with a high-pressure mercury lamp even if the illuminance is high.
And even if such a metal halide lamp base can be installed in conformity to an existing high-pressure mercury lamp fixture, the emission point deviates from the focal point of the reflector due to the difference in lamp dimensions. As a result, problems such as medium blurring occur in the light distribution characteristics.
Therefore, in order to use a low-power lamp, it is necessary to replace the appliance, which causes a problem that the replacement cost and installation cost of a new appliance increase.

Therefore, conventionally, a single-end lamp is designed and manufactured in which an arc tube of a ceramic metal halide lamp is housed in an outer tube suitable for an apparatus for a high-pressure water source lamp.
As shown in FIG. 4, the conventional single-ended lamp 41 has a ceramic light emitting tube 44 in which capillaries 43A and 43B are formed at both ends of the light emitting portion 42 and is hermetically accommodated in a vacuum outer tube 47. (See Patent Document 1 [FIG. 2]).

A stem 49 for leading two stem leads 48A and 48B is welded to one end 47a of the outer tube 47, and a screw contact 45 having a spiral groove formed in a metal pipe and a screw formed on its peripheral surface is provided. An Edison base 46 is connected to each of the stem leads 48A and 48B, and the screw contact 45 is screwed to one end 47a and directly attached thereto.
The arc tube 44 is a disk in which the electrode leads 50A and 50B are welded to the columns 51A and 51B welded to the stem leads 48A and 48B via nickel 52A and 52B lines, and attached to the columns 51A and 51B. Capillaries 43A and 43B are supported by 53A and 53B, and the light emitting section 42 is positioned at the focal point of the instrument and disposed in the outer tube rupture prevention sleeve 54.

When manufacturing such a single-ended lamp 41, a mount 55 is formed by assembling a support column 51A, 51B, disks 53A, 53B, arc tube 44, sleeve 54, etc. on the stem 49, and this is inserted into the outer tube 47. Then, the stem 49 is fused to the one end 47a.
Next, after removing air from the exhaust pipe 56 formed on the stem 49 and closing the exhaust pipe tip 56a with the outer pipe 47 being evacuated, the stem lead 48A led out of the outer pipe 47 is closed. 48B is connected to the Edison base 46, and its screw contact 45 is screwed into one end 47a of the outer tube 47 and fixed.

  However, since the focal position differs depending on each lighting fixture, the position of the sleeve 54, the mounting positions of the disks 53A and 53B that support the sleeve 54, the lengths of the columns 51A and 51B, etc. are designed accordingly. Furthermore, after the mount 55 assembled based on such a design is inserted into the outer tube 47, an exhausting operation for evacuating the outer tube 47, or a chip-off for chipping off the exhaust tube. Since work is required, manufacturing takes time, cost, and time.

JP 2008-117647 A

  Therefore, the present invention eliminates the hassle of designing according to the focal position, eliminates the need to perform exhaust work and tip-off work of the outer tube, and makes it easy to provide a low-power single-ended lamp that is suitable for lighting equipment for high-pressure mercury lamps. It is a technical problem to provide a single-piece lamp having a simple structure that can be manufactured easily.

  In order to solve this problem, according to the present invention, a stem that leads two stem leads connected to a power supply line of a lamp body is fused to one end opening of an outer tube that accommodates the lamp body, and a metal pipe An edison base having a screw contact formed with a screw thread on the outer peripheral surface thereof is connected to the stem lead, and the screw contact is directly attached to one end of the outer tube. A light emitting tube having capillaries formed at both ends of the light emitting portion in a translucent tube in which a pinch seal portion in which a pair of feeders is led out is formed on one end side and an exhaust pipe on the other end side is chipped off. An off-the-shelf ceramic metal halide lamp housed in an airtight manner is used, and the ceramic metal halide lamp is positioned so that the light emitting part is located at a pre-designed light emitting point. Fit is to is characterized in that the feed line is welded via a relay conductor to the stem leads.

According to the present invention, an off-the-shelf ceramic metal halide lamp in which an arc tube is hermetically disposed in a light-transmitting tube is used as a lamp body housed in the outer tube.
In other words, a ceramic metal halide lamp that can be stably lit as long as it is connected to a power source is used. Therefore, the ceramic metal halide lamp is positioned at an appropriate position in the outer tube suitable for a lighting fixture, and the ceramic metal halide lamp is used. Can be manufactured by simply connecting the feeder line to the Edison base attached to the outer tube.
At this time, since the arc tube of the ceramic metal halide lamp is hermetically housed in the translucent tube, there is no need to maintain the inside of the outer tube in a vacuum, and therefore the exhaust pipe of the stem located at one end of the outer tube is chipped. There is no need to close it off.

In the present invention, a ceramic metal halide lamp in which a pair of power supply lines are led out from one end side is used. If the distance between the power supply lines and the distance between the stem leads is substantially equal, welding is performed via a metal sleeve or a plate-shaped conductor piece. What is necessary is just to weld through a plate-shaped conductor piece, when it differs greatly.
In addition, the ceramic metal halide lamp is unstable at the tip end only by welding the power supply wire to the stem lead. For example, a metal wire wound around the exhaust pipe tip-off portion at the tip of the translucent tube is connected to one end of the stem lead. The metal halide lamp may be supported concentrically with respect to the outer tube by welding to the extending column or by attaching a thin metal plate support to the exhaust tube tip-off part.

Explanatory drawing which shows an example of the one-piece metal mold | type lamp which concerns on this invention. FIG. Explanatory drawing which shows another Example. Explanatory drawing which shows the conventional one-piece die lamp.

  In this example, there is almost no cumbersome design according to the focal position, and it is not necessary to exhaust the outer tube or perform the tip-off operation. In order to achieve the purpose of providing a single-piece lamp having a simple structure that can be manufactured, two stem leads connected to the power supply line of the lamp body are led out at one end opening of the outer tube that accommodates the lamp body. The stem is fused, and an Edison base having a screw contact having a thread formed on the outer peripheral surface of the metal pipe is connected to the stem lead, and the screw contact is directly attached to one end of the outer tube. In a one-piece lamp, a pinch seal portion in which a pair of feeders is led out is formed on one end side as a lamp body, and an exhaust pipe on the other end side is chipped off. Using a ready-made ceramic metal halide lamp in which a light emitting tube having capillaries formed at both ends of the light emitting unit is hermetically stored in the tube, the ceramic metal halide lamp is positioned so that the light emitting unit is located at a pre-designed light emitting point, The feeder line was welded to the stem lead via a relay conductor.

  The single-ended lamp 1 according to the present invention has two stem leads 3A and 3B connected to the power supply line of the lamp body L at an opening 2b formed at one end 2a of the outer tube 2 that houses the lamp body L. Is connected to the stem leads 3A and 3B, and an Edison base 6 having a screw contact 5 in which a spiral groove is formed in a metal pipe and a screw is formed on the peripheral surface thereof is connected to the stem leads 3A and 3B. The screw contact 5 is screwed into the one end 2a of the outer tube 2 and directly attached.

The outer tube 2 and the Edison cap 6 are of the same standard as the high pressure mercury lamp to be replaced.
As shown in FIG. 2, the stem 4 is formed with a stem flange 7 that closes the opening 2 b of the outer tube 2, and ensures ventilation inside and outside the outer tube 2 with the flange 7 closing the opening 2 b. An exhaust pipe 8 is formed.

  As the lamp main body L, a pinch seal portion 13 is formed on one end side through which a pair of power supply lines 12A and 12B is led out, and an exhaust pipe 14 on the other end side is chipped off. An off-the-shelf ceramic metal halide lamp 11 in which the arc tube 18 having capillaries 17A and 17B formed on both ends of the airtight housing 16 is used is used. Are connected in the light-transmitting tube 15 to the feeder lines 12A and 12B sealed in the tube.

Then, the ceramic metal halide lamp 11 is positioned so that the light emitting portion 16 of the ceramic metal halide lamp 11 is positioned at the pre-designed light emitting point P, and the feed lines 12A and 12B led out from the pinch seal portion 13 are The gold lamp 1 is welded to the stem leads 3 </ b> A and 3 </ b> B via a relay conductor 20.
The light emitting point P is defined, for example, by a length L1 from the stem flange 7, and since the length L2 from the tip of the pinch seal portion 13 of the ceramic metal halide lamp 11 to the bright spot position of the light emitting portion 16 is known, the ceramic metal halide is known. The lamp 11 is positioned at the light emitting point P by adjusting the length D = d1-d2 from the stem flange 7 to the tip of the pinch seal portion 13.

  As the relay conductor 20, in this example, a metal sleeve is used in which the feeder lines 12A and 12B are inserted from one side and the stem leads 3A and 3B are inserted from the other end, and the interval between the stem leads 3A and 3B is supplied. This can be applied when the distance between the electric wires 12A and 12B is substantially equal.

Also, one end of a support column 21 extending in the longitudinal direction of the outer tube 2 is welded to one stem lead 3A, and a metal wire 22 is wound around the exhaust tube 14 of the translucent tube 15 which is chipped off. The front end 22a of the wire 22 is welded to the support column 21, and the front end side of the ceramic metal halide lamp 11 is supported.
Further, the outer tube end portion 8a of the exhaust tube 8 penetrating the stem 4 is opened, and the outer tube 2 of the single-ended die lamp 1 is maintained at atmospheric pressure.

The above is one configuration example of the present invention, and the operation thereof will be described next.
When the one-piece lamp 1 is manufactured, the mount 22 is formed by assembling the column 21, the ceramic metal halide lamp 11 (lamp body L), and the like on the stem 4.
In this case, first, one end side of the support column 21 is welded to one stem lead 3A, and the feeders 12A, 12B of the ceramic metal halide lamp 11 are welded to the stem leads 3A, 3B via the sleeve-like relay conductors 20. .
At this time, by positioning the length L3 from the stem flange 7 to the tip of the pinch seal portion 13, the ceramic metal halide lamp 11 is positioned at the light emitting point P.
Then, the metal wire 22 is wound around the exhaust pipe 14, and the tip 22a is welded to the support column 21 to complete the mount 23.

Next, the mount 23 is inserted into the outer tube 2, and the stem flange 7 is fused to one end 2 a, and at the same time, a screw that is screwed to the inner surface side of the screw contact 5 is molded on the outer peripheral surface.
Since the ceramic metal halide lamp 11 is positioned at the light emitting point P when the mount 23 is formed, it is only necessary to fuse the stem flange 7 to the outer tube 2, and is troublesome when inserted into the outer tube 2. There is no need to perform positioning.

In addition, since an existing ceramic metal halide lamp 11 in which the arc tube 18 is hermetically housed in the light-transmitting tube 15 is used, the exhaust process of evacuating the outer tube 2 and the exhaust tube 8 of the stem 4 are chipped off. No chip-off process is required.
Of course, it is possible to perform these steps as necessary, but even if it is not performed, since it can be used as a one-piece die lamp, the environment in the outer tube 2 can be arbitrarily designed.

Finally, the stem leads 3A and 3B led out of the outer tube 2 are connected to the Edison base 6, and the screw contact 5 is screwed to one end 2a of the outer tube 2 and fixed with an adhesive or the like as necessary. Complete.
As described above, according to this example, the outer tube 2 and the Edison base 6 of the same standard as the high-pressure mercury lamp to be replaced are used, and the existing ceramic metal halide lamp 11 is accommodated in the outer tube 2. There is almost no troublesome design depending on the position, and it is not necessary to perform the exhausting operation and tip-off operation of the outer tube, and the low-power single-ended lamp 1 that is suitable for the lighting apparatus of the high-pressure mercury lamp can be easily manufactured.

  This example is the same as that of Example 1 except that the support means for the ceramic metal halide lamp 11 (lamp body L) and the connection means to the stem leads 3A and 3B are different. Detailed description will be omitted.

  In this example, the single-ended lamp 31 has a screw contact 5 of an Edison base 6 mounted on one end 2a of the outer tube 2 on one end 2a of the outer tube 2 containing the ceramic metal halide lamp 11 (lamp body L). It is attached directly.

The feeder lines 12A and 12B led out from the pinch seal portion 13 of the ceramic metal halide lamp 11 are welded to the stem leads 3A and 3B of the one-piece lamp 31 via the relay conductor 32.
As the relay conductor 32, in this example, a plate-like conductor piece in which the feeder wires 12A and 12B are welded to one end and the stem leads 3A and 3B are welded to the other end is used. The present invention can be applied even when the interval and the interval between the feeder lines 12A and 12B are greatly different.

A thin metal plate support 33 that supports the ceramic metal halide lamp 11 concentrically with respect to the outer tube 2 is mounted on the exhaust tube 14 of the translucent tube 15 that is chipped off.
The support 33 includes a spacer S ₁ , a circular ring plate 35 having a circular hole 34 through which the exhaust pipe 14 protruding in the center of the light transmitting tube 15 is inserted, and a 90 ° interval from the circular ring plate 35. And four leaf springs 36 formed so as to diverge radially.
Then, the tip of the leaf spring 36 is brought into contact with the inner peripheral surface of the outer tube 2, and by the elastic force, the exhaust tube 14 is positioned at the center of the outer tube 2, and the ceramic metal halide lamp 11 is moved with respect to the outer tube 2. Supporting concentrically.

When manufacturing the single-ended lamp 31 of this example, the mount 37 is formed by assembling the ceramic metal halide lamp 11 (lamp body L) on the stem 4.
In this case, the feeders 12A and 12B of the ceramic metal halide lamp 11 are welded to the stem leads 3A and 3B via the relay conductor 32 made of a plate-like conductor piece.
At this time, by positioning the length L3 from the stem flange 7 to the tip of the pinch seal portion 13, the ceramic metal halide lamp 11 is positioned at the light emitting point P.
Then, the mount 36 is completed by attaching the support 33 to the exhaust pipe 14.

  Thus, according to this example, in order to support the tip end side of the ceramic metal halide lamp 11, it is only necessary to mount the support 33 on the exhaust pipe 14, and the support column 21 is connected to one stem 2A as in the first embodiment. And the metal wire 22 is wound around the exhaust pipe 14, and the tip 22a is welded to the support column.

Next, the mount 37 is inserted into the outer tube 2, and the stem flange 7 is fused to one end 2a thereof.
Since the ceramic metal halide lamp 11 is positioned at the light emitting point P when the mount 23 is formed, it is only necessary to fuse the stem flange 7 to the outer tube 2, and is troublesome when inserted into the outer tube 2. There is no need to perform positioning.

In addition, since an existing ceramic metal halide lamp 11 in which the arc tube 18 is hermetically housed in the light-transmitting tube 15 is used, the exhaust process of evacuating the outer tube 2 and the exhaust tube 8 of the stem 4 are chipped off. No chip-off process is required.
Of course, it is possible to perform these steps as necessary, but even if it is not performed, since it can be used as a one-piece die lamp, the environment in the outer tube 2 can be arbitrarily designed.

Finally, the stem leads 3A and 3B are connected to the Edison base 6 and the screw contact 5 is externally attached to one end 2a of the outer tube 2 and fixed with an adhesive.
As described above, according to this example, the outer tube 2 and the Edison base 6 of the same standard as the high-pressure mercury lamp to be replaced are used, and the existing ceramic metal halide lamp 11 is accommodated in the outer tube 2. There is almost no troublesome design according to the position, and it is not necessary to perform exhaust work and tip-off work of the outer tube, and it is possible to more easily manufacture the low-power single-ended lamp 31 that is suitable for a high-pressure mercury lamp.

  The present invention can be applied to a single-ended lamp in which a screw contact of an Edison cap is directly attached to a lamp outer tube.

1, 31 ......... Single-piece lamp L ......... Lamp body 2 ……………… Outer tube 3A, 3B …… Stem lead 4 ……………… Stem 5 ……………… Screw contact 6 ... Edison base 8 ... Exhaust pipe 11 ... Ceramic metal halide lamps 12A, 12B ... Feed line 13 ... Pinch seal 14 ... ……… Exhaust pipe 15 ……………… Translucent pipes 20 and 32 ………… Relay conductor 21 ……………… Post 22 ……………… Metal wire 33 ……………… Support

Claims (6)

A stem that leads two stem leads connected to the power supply line of the lamp body is fused to one end opening of the outer tube that houses the lamp body, and screw contacts that form threads on the outer peripheral surface of the metal pipe In the one-piece die lamp having an Edison die having a screw contact connected to the stem lead and directly attached to one end of the outer tube,
As the lamp body, a pinch seal part in which a pair of power supply lines are led out is formed on one end side, and capillaries are formed on both ends of the light emitting part in a light-transmitting tube in which an exhaust pipe on the other end side is chipped off. An off-the-shelf ceramic metal halide lamp containing the arc tube is used.
A one-piece metal lamp characterized in that a ceramic metal halide lamp is positioned so that the light emitting part is located at a predesigned light emitting point, and the power supply line is welded to a stem lead via a relay conductor.   The single-ended lamp according to claim 1, wherein the relay conductor is a metal sleeve through which the feeder line is inserted from one side and the stem lead is inserted from the other side.   The single-ended lamp according to claim 1, wherein the relay conductor is a plate-like conductor piece in which the power supply line is welded to one end and the stem lead is welded to the other end.   One end of a column extending in the longitudinal direction of the outer tube is welded to one end of the stem lead, a metal wire is wound around the exhaust tube of the light-transmitting tube that is chipped off, and the tip of the metal wire is connected to the column The one-piece die lamp according to claim 1, wherein the ceramic metal halide lamp is supported by being welded to a lamp.   2. The single-ended lamp according to claim 1, wherein a support made of a thin metal plate for supporting the ceramic metal halide lamp concentrically with respect to an outer tube is mounted on the exhaust tube of the translucent tube which is chipped off. The single-ended lamp according to claim 1, wherein an outer tube end portion of the exhaust tube penetrating the stem is opened and the inside of the outer tube is maintained at an atmospheric pressure.

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