JP2006147298A - Power supply member for low-pressure discharge lamp - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a power supply member 4 for a low-pressure discharge lamp surely and easily contacting an external electrode 3 of the low-pressure discharge lamp 1. <P>SOLUTION: The power supply member 4, aiming at an electric contact by holding the low pressure discharge lamp 1 provided with a current conduction layer on external end part of a tube-shaped glass lamp container 1 as an external electrode 3, is fixed by pinching a surface of the external electrode 3 from both sides, and made to have such a structure that the surface of the power supply member 4 contacts the external electrode 3 with two or more of contact parts. <P>COPYRIGHT: (C)2006,JPO&NCIPI

Description

  The present invention relates to a power supply member for a low-pressure discharge lamp.

  A so-called dielectric barrier discharge lamp having an electrode outside the lamp is known from, for example, Japanese Utility Model Laid-Open No. 61-126559 (Patent Document 1) and Japanese Patent Application Laid-Open No. 2004-146351 (Patent Document 2). FIG. 12 is a diagram showing the structure of the conventional dielectric barrier discharge lamp lighting device. The glass tube 11 of the dielectric barrier discharge lamp 10 is filled with a metal vapor such as mercury and a rare gas as a discharge medium. The outer surfaces of both ends of the glass tube 11 are covered with cylindrical metal conductors. An electrode 12 is formed. When a high-frequency voltage is applied from the high-frequency oscillation device 13 between the external electrodes 12 at both ends, high-frequency power is injected into the glass tube 11 through the glass component on the inner peripheral side of the external electrode 12, and within the lamp Discharge occurs and the lamp emits light.

  A method of connecting a lead wire to the external electrode 12 in order to apply a high frequency voltage to the low pressure discharge lamp 10 used in such a discharge lamp lighting device is shown in FIGS. The lead wire 14 is bonded to the external electrode 12 at the end of the low-pressure discharge lamp 10 with a conductive adhesive 15 such as silver paste.

When such a conventional method is used, it is easy to connect the lead wire 14 to the external electrode 12 regardless of the material of the external electrode 12, but there is a problem that the cost increases, and uneven adhesion is also caused. There is a problem that when the lead wire 12 is disconnected due to, for example, non-lighting or sparks may be burned out.
Japanese Utility Model Publication No. 61-126559 JP 2004-146351 A

  The present invention has been made in view of the above-described problems of the prior art, and an object thereof is to provide a power supply member for a low-pressure discharge lamp that can reliably and easily come into contact with an external electrode of the low-pressure discharge lamp.

  The invention of claim 1 is a power supply member for a low-pressure discharge lamp which is held in contact with the external electrode of a low-pressure discharge lamp having a configuration in which a current conductor layer is disposed as an external electrode at an outer surface end of a tubular glass lamp vessel. Then, the surface of the external electrode is sandwiched from both sides, and the surface of the external electrode is brought into contact with two or more contact portions.

  According to a second aspect of the present invention, in the power supply member for a low pressure discharge lamp according to the first aspect, a protrusion is provided on the inner surface of the power supply member, and the contact between the power supply member and the external electrode is a point contact at the protrusion. It is characterized by that.

  According to a third aspect of the present invention, in the power supply member for a low-pressure discharge lamp according to the first aspect, a stopper-shaped power supply portion is provided at an end of the power supply member, and the external electrode is held by the power supply member and the stopper-shaped power supply portion. Is configured to be held in contact with the lamp end surface of the glass lamp vessel.

  According to the power supply member for a low pressure discharge lamp of the present invention, the external electrode of the low pressure discharge lamp can be securely held and the electrical contact with the external electrode can be ensured.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings.

  (First Embodiment) FIGS. 1 and 2 are a side view and a front view of a power supply member according to a first embodiment of the present invention. An external electrode 3 is installed at the end of the tubular glass lamp vessel 2 of the dielectric barrier discharge type low pressure discharge lamp 1. The power supply member 4 has a shape that sandwiches the entire external electrode 3 from two directions. A lead wire 5 is attached to the power supply member 4. When the external electrode 3 is connected to the power supply member 4, the external electrode 3 of the lamp 1 is fitted into the power supply member 4.

  According to the present embodiment, since the external electrode 3 is simply fitted into the power supply member 4, the external electrode 3 can be easily attached, and the power supply member 4 can hold the end of the low-pressure discharge lamp 1 and the external electrode of the low-pressure discharge lamp 1. The electrical contact with 3 can be ensured. In addition, since the lead wire 5 is not directly bonded to the external electrode 3, there is no possibility of occurrence of uneven adhesion.

  (Second Embodiment) FIGS. 3 and 4 are a side view and a front view of a power feeding member according to a second embodiment of the present invention. The feature of this embodiment is that the power supply member 4 is divided in the lamp longitudinal direction (axial direction) with respect to the first embodiment. In addition, the code | symbol of the element corresponding to 1st Embodiment shown in FIG. 1, FIG. 2 is used in common.

  According to the present embodiment, the number of contact points between the power supply member 4 and the surface of the external electrode 3 is increased, the holding of the end of the low pressure discharge lamp 1 by the power supply member 4 and the electrical connection between the external electrode 3 of the low pressure discharge lamp 1. Contact can be made more reliable.

  (Third Embodiment) FIGS. 5 and 6 are a side view and a front view of a power feeding member according to a third embodiment of the present invention. The feature of this embodiment is that a stopper-like power feeding portion 6 that contacts the end face of the external electrode 3 of the low-pressure discharge lamp 1 in the power feeding member 4 is provided at the end of the power feeding member 4 with respect to the second embodiment. In the point. In addition, the code | symbol of the element corresponding to 1st Embodiment shown in FIG. 1 and FIG. 2 and 2nd Embodiment shown in FIG. 3 and FIG. 4 is used in common.

  According to the present embodiment, since the power supply member 4 and the stopper-shaped power supply portion 6 at the end thereof are in contact with the external electrode 3, the contact point between the both increases, and the end portion of the low-pressure discharge lamp 1 by the power supply member 4. And the electrical contact with the external electrode 3 of the low-pressure discharge lamp 1 can be further ensured. 1 and FIG. 2, the stopper-like power feeding portion 6 that contacts the lamp end face is formed at the end of the power feeding member 4 of the first embodiment as in the third embodiment. can do.

  (Fourth Embodiment) FIGS. 7 and 8 are a side view and a front view of a power feeding member according to a fourth embodiment of the present invention. The feature of this embodiment is that the contact piece of the power supply member 4 is bent in a dogleg shape with respect to the second embodiment shown in FIG. 3 and FIG. The point of contact is from four directions. In addition, the code | symbol of the element corresponding to 2nd Embodiment shown in FIG. 3 and FIG. 4 is used in common.

  According to the present embodiment, the number of contact points between the power supply member 4 and the external electrode 3 can be further increased, and the contact between the power supply member 4 and the external electrode 3 can be made more reliable. Note that, similarly to the third embodiment, the power supply member 4 of the present embodiment can be formed with a stopper-shaped power supply portion 6 that abuts against the lamp end surface at the end thereof.

  (Fifth Embodiment) FIGS. 9 and 10 are a side view and a front view of a power feeding member according to a fifth embodiment of the present invention. A feature of this embodiment is that an inner surface protrusion 7 is provided at a portion where the power supply member 4 contacts the surface of the external electrode 3 with respect to the second embodiment shown in FIGS. 3 and 4. In addition, the code | symbol of the element corresponding to 2nd Embodiment shown in FIG. 3 and FIG. 4 is used in common.

  According to the present embodiment, the inner surface protrusion 7 abuts on the surface of the external electrode 3 with higher pressure, and the contact between the power supply member 4 and the external electrode 3 can be made more reliable. Note that, similarly to the third embodiment, the power supply member 4 of the present embodiment can be formed with a stopper-shaped power supply portion 6 that abuts against the lamp end surface at the end thereof.

  (Sixth Embodiment) FIG. 11 is a side view of a power feeding member according to a sixth embodiment of the present invention. A feature of the present embodiment is that a necessary number of power supply members 4 having the shape of the fifth embodiment shown in FIGS. 9 and 10 are connected in parallel, and the lead wire 5 is one power supply member 4 of the connection body. Only in the point connected to. In addition, the code | symbol of the element corresponding to 5th Embodiment shown in FIG. 9 and FIG. 10 is used in common.

  According to the present embodiment, the external electrode 3 at the end of the low-pressure discharge lamp 1 can be reliably held and contact can be ensured, and a plurality of low-pressure discharge lamps 1 can be simultaneously held in parallel. As for the power supply member 4 of any of the first to fourth embodiments, an appropriate number of power supply members can be provided in a parallel connection structure as in the present embodiment.

  The performance of the power supply member for the low-pressure discharge lamp according to the embodiment of the present invention and the power supply member of the conventional comparative example were compared.

Example 1
<Tubular glass lamp vessel>
Material: Borosilicate glass Dimensions: Outer diameter 4.0mm, Total length 700mm
<External electrode>
Current conductor layer: Metal layer Length: 125mm
<Phosphor layer>
Material: Three-wavelength phosphor Thickness: 20 μm
<Lamp encapsulant>
Filled gas: Neon and argon mixed gas (composition ratio: neon / argon = 90 mol% / 10 mol%)
Filling pressure: 50 Torr Mercury: Filling amount 3mg
<Power supply member>
Use of the fifth embodiment of the present invention (Comparative Example 1)
Use the same low-pressure discharge lamp as in Example 1 <Power supply member>
13 and FIG. 14 were used. A discharge lamp lighting test was performed on Example 1 and Comparative Example 1 with the circuit configuration shown in FIG. As a result, in Example 1, when the lamp was turned on, sparks were not generated due to poor contact between the electrode and the power supply member, and burning did not occur, but in Comparative Example 1, the lead wire 14 was disconnected due to insufficient adhesive strength of the conductive adhesive, Some sparks were burned out.

The side view of the electric power feeding member of the 1st Embodiment of this invention. The front view of the electric power feeding member of the 1st Embodiment of this invention. The side view of the electric power feeding member of the 2nd Embodiment of this invention. The front view of the electric power feeding member of the 2nd Embodiment of this invention. The side view of the electric power feeding member of the 3rd Embodiment of this invention. The front view of the electric power feeding member of the 3rd Embodiment of this invention. The side view of the electric power feeding member of the 4th Embodiment of this invention. The front view of the electric power feeding member of the 4th Embodiment of this invention. The side view of the electric power feeding member of the 5th Embodiment of this invention. The front view of the electric power feeding member of the 5th Embodiment of this invention. The side view of the electric power feeding member of the 6th Embodiment of this invention. The circuit diagram of the conventional dielectric barrier discharge type low-pressure discharge lamp lighting device. The side view of the conventional electric power feeding member. The front view of the conventional electric power feeding member.

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 Discharge lamp 2 Glass lamp container 3 External electrode 4 Feeding member 5 Lead wire 6 Stopper-shaped feeding part 7 Protrusion part

Claims (3)

A power supply member for a low-pressure discharge lamp that holds and contacts an external electrode of a low-pressure discharge lamp having a configuration in which a current conductor layer is disposed as an external electrode on an outer surface end of a tubular glass lamp vessel,
A power supply member for a low-pressure discharge lamp having a shape in which the surface of the external electrode is sandwiched from both sides and is in contact with the surface of the external electrode at two or more contact portions.   2. The power supply member for a low-pressure discharge lamp according to claim 1, wherein a protrusion is provided on the inner surface of the power supply member, and the contact between the power supply member and the external electrode is a point contact at the protrusion. A stopper-shaped power feeding portion is provided at the end of the power feeding member, the external electrode is held by the power feeding member, and the stopper-shaped power feeding portion is held in contact with the lamp end surface of the glass lamp vessel. The power supply member for a low-pressure discharge lamp according to claim 1.

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