JP2000315480A - Lamp having base - Google Patents

Abstract

PROBLEM TO BE SOLVED: To improve insulation between feed members and to prevent discharge between the feed members, by interposing a clearance between a contact-like feed member or a pin-like feed member in the center of a base and a spiral feed member on the outer peripheral surface of the base. SOLUTION: In an incandescent lamp A having a base, a groove P opened in the outer end surface 23 of a mounted portion 22 is formed by surrounding a contact-like feed member 26, and therefore, a clearance of this groove P can improve insulation between a spiral feed member 25 and the contact-like feed member 26. Therefore, even when input voltage of an incandescent lamp 10 is high, discharge between the spiral feed member 25 and the contact-like feed member 26 can be prevented. For example, when voltage of the incandescent lamp 10 is rated 100-300 V, outer diameter r1 of the mounted portion 22 is 10-39 mm, thickness t1 of the outer peripheral wall outside the groove P is 1.5-7 mm, and width u1 of the groove P is 0.3-3 mm. Since the thickness t1 of the outer peripheral wall of the mounted portion 22 is 1.5 mm or thicker, sufficient strength is provided, and since the width u1 of the groove P is 0.3 mm, the discharge between the spiral and contact-like feed members 25, 26 can be prevented.

Description

DETAILED DESCRIPTION OF THE INVENTION

[0001]

The present invention relates to a lamp with a base for general lighting, for example.

[0002]

2. Description of the Related Art In the past, incandescent lamps or discharge lamps have been used as lighting lamps in stores and the like. Actually, a lamp with a base having a so-called screw base having a contact-like power supply member at the tip and a spiral power supply member on the outer peripheral surface is widely used.

FIG. 6 is an explanatory cross-sectional view showing a configuration of a base portion in an example of a conventional lamp with a base, in which a part of the lamp is omitted. In this figure, the base 7
0 is made of an insulating material such as ceramics,
0, for example, receiving the sealing portion at one end and adhesive (not shown)
A lamp holding portion 71 for holding the lamp 60
And a mounting portion 72 to be mounted on the socket, having a shape protruding outward from the lamp holding portion 71 and having a central portion of the outer end surface 73 protruding outward in a conical shape. A metal spiral power supply member 75 is fixedly provided on the outer peripheral surface of the mounted portion 72 of the base 70, and a distal end of the mounted portion 72 has a through hole 74 penetrating the mounted portion 72. Contact-shaped power supply member 7 so as to close the end opening
6 are provided. One external lead rod 63 connected to one metal foil 61 in the sealing portion of the lamp 60 is electrically connected to the spiral power supply member 75 via a lead wire. The other external lead rod 64 connected to the other metal foil 62 in the sealing portion of the lamp 60 is electrically connected to the power supply member 76 via a lead wire.

FIG. 7 is an explanatory view showing the structure of a conventional lamp with a base using a discharge lamp. In the figure, reference numeral 80 denotes a double-tube discharge lamp. The double-tube discharge lamp 80 includes an inner container 81 having a discharge electrode 83 therein and a support lead rod 8 for supporting the inner container 81.
And an outer container 82 provided with the outer container 85. A base 90 is attached to a sealing portion at one end of the discharge lamp 80. In the base 90, a spiral power supply member 75 is mounted on the outer peripheral surface thereof, and a contact-like power supply member 76 is provided at a central portion of the outer end surface 73 of the base 90. Each of the power supply members 76 includes a support lead rod 8.
4, 85 are electrically connected.

[0005] The above-described lamp with a base has an advantage that the spiral power supply member 75 in the mounting portion 72 is screwed into a socket (not shown), so that the mounting to the socket is simple and convenient. Have.

On the other hand, such a lamp with a base is required to have a large output depending on the application. Therefore, a lamp having a high input voltage, for example, an incandescent lamp having a rated voltage exceeding 200 V, or a starting voltage having a high starting voltage. 2000
Discharge lamps above V are provided.

However, when the fat or dust of the hand adheres to the outer end face 73 of the base and becomes dirty, in the case of a base-equipped lamp having a high input voltage, the contact-type power supply member 76 and the spiral power supply member 75 are connected. There is a problem that a creeping discharge occurs and the lamp becomes unlit. In addition, when a creeping discharge occurs, the lamp with the base is mounted in the socket, so there is a problem that the socket may burn or cause a fire. There is a problem that the lighting power supply device is damaged.

[0008]

DISCLOSURE OF THE INVENTION The present invention has been made based on the above circumstances, and its object is to provide:
An object of the present invention is to provide a base-equipped lamp capable of reliably preventing discharge between power supply members of a base even when a lamp having a high input voltage is provided.

[0009]

SUMMARY OF THE INVENTION A lamp with a base according to the present invention comprises a lamp, a base for receiving a sealed portion of the lamp and holding the lamp, and having a portion to be mounted in a socket. A base-equipped lamp,
A spiral power supply member connected to one external lead rod extending from the lamp is provided on the outer peripheral surface of the mounting portion of the base, and a tip of the mounting portion is connected to the other external lead rod extending from the lamp. The contact-shaped power supply member is provided, and the mounting portion of the base has an annular shape surrounding the contact-shaped power supply member so as to open to an outer end surface between the spiral power supply member and the contact-shaped power supply member. It is characterized in that a groove is formed.

[0010] A lamp with a base according to the present invention comprises a lamp, and a base having a portion to be mounted in a socket while receiving the sealed portion of the lamp and holding the lamp. A helical power supply member connected to one external lead rod extending from the lamp is provided on the outer peripheral surface of the mounting portion of the base, and the mounting portion of the base has a central region of the outer end surface. And a pin-shaped power supply member extending so as to protrude outward through the recess is provided in a state connected to the other external lead rod extending from the lamp. Has a larger inner diameter than the outer diameter of the pin-shaped power supply member, and a gap is formed around the pin-shaped power supply member.

[0011]

In the base-equipped lamp having the above structure, a gap is provided between the contact-shaped power supply member or the pin-shaped power supply member located at the center of the base and the spiral power supply member located on the outer peripheral surface of the base. Because of the interposition, the insulation between the power supply members is reliably high, and as a result, discharge between the power supply members can be reliably prevented.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Hereinafter, the present invention will be described in detail. FIG. 1 is an explanatory sectional view showing an example of the configuration of a lamp with a base of the present invention using an incandescent lamp. The incandescent lamp A with a base includes a one-end sealed incandescent lamp 10 and a base 2 made of, for example, alumina-silica ceramic.
0. The incandescent lamp 10 has a tubular sealing body 1 having a sealing portion 12 at one end and an exhaust pipe remaining portion 13 at the other end.
In FIG. 1, a light emitting portion 14 composed of a filament is arranged along the tube axis of the tubular envelope 11. In addition, an inert gas including, for example, nitrogen gas and a halogen compound are sealed in the tubular sealing body 11.

One end of the light emitting portion 14 is connected to one internal lead rod 15a, and the other end is connected to the other internal lead rod 15b. These one internal lead rod 15a and the other internal lead rod 15b
Each extends to the sealing portion 12, and one end portion of each
It is connected to a pair of metal foils 16a and 16b buried apart from each other in the sealing portion 12 of the tubular sealing body 11. Also, the other end of one internal lead rod 15a is
It is inserted and held in the remaining portion 13 of the exhaust pipe of the tubular envelope 11. Also, each of the metal foils 16a and 16b has
One external lead rod 17a extending outward from the sealing portion 12
And the other external lead bar 17b are connected to each other.

The base 20 has a cylindrical lamp holding portion 21.
The incandescent lamp 10 is fixed and held by the adhesive S in a state where the sealing portion 12 at one end is received by the lamp holding portion 21. The base 20 is formed with a small-diameter rod-shaped mounting portion 22 mounted on the socket via a tapered portion of the lamp holding portion 21 so as to protrude outward. Have a shape protruding outward in a conical shape, and a through hole 24 is formed.

A tubular metal spiral power supply member 25 is fixedly provided on the outer peripheral surface of the mounted portion 22, and an outer end opening of a through hole 24 is formed at the tip of the mounted portion 22. A contact-like power supply member 26 is provided so as to close. One external lead rod 17a extending from the incandescent lamp 10 is electrically connected to the spiral power supply member 25 via a lead wire, while the contact-shaped power supply member 26 extends from the incandescent lamp 10. The other external lead rod 17b is electrically connected via a lead wire.

Further, an annular groove P surrounding the contact-like power supply member 26 is formed in the mounting portion 22 so as to open to the outer end surface 23 between the spiral power supply member 25 and the contact-like power supply member 26.
Are formed.

In the incandescent lamp A with the base having the above-described configuration, the groove P opening in the outer end surface 23 of the mounted portion 22 in the mounted portion 22 has the contact-shaped power supply member 2.
6, the gap between the grooves P ensures that the insulation between the spiral power supply member 25 and the contact power supply member 26 is high. Therefore, even when the incandescent lamp 10 has a high input voltage, discharge between the spiral power supply member 25 and the contact power supply member 26 can be reliably prevented.

An incandescent lamp A with a base having the above structure
For example, when the rated voltage of the incandescent lamp 10 is 100 to 300 V, the mounting portion 2
2 has an outer diameter r1 of 10 to 39 mm, preferably 11 to 26 mm.
mm, the thickness t1 of the outer peripheral wall located outside the groove P is 1.5 to 7 mm, preferably 1.5 to 6 mm, and the width u1 of the groove P is 0.3 to 3 mm, preferably 0.1 mm. 5-2m
m. The thickness t1 of the outer peripheral wall of the mounted portion 22 is 1.5 m
When it is at least m, the outer peripheral portion of the mounted portion 22 has sufficient strength. When the length of the width u1 of the groove P is 0.3 mm or more, the spiral power supply member 25
It is possible to reliably prevent discharge between the power supply member 26 and the contact-shaped power supply member 26.

FIG. 2 is an explanatory sectional view showing another embodiment of a lamp with a base according to the present invention. In the incandescent lamp B with a base according to the example of FIG.
0 and a base 30 made of, for example, alumina-silica-based ceramics, which receives the sealing portion 12 of the incandescent lamp 10 and holds the incandescent lamp 10. 1, the incandescent lamp 10 is fixed and held by the adhesive S.

On the other hand, a concave portion 33 is formed in the central region of the mounted portion 32 of the base 30 so as to open to the outer end surface 32a. A spiral power supply member 34 is fixedly provided on the outer peripheral surface of the mounted portion 32 in a state of being electrically connected to one of the external lead rods 17a extending from the incandescent lamp 10 via a lead wire. I have. Further, it extends outwardly through the inside of the concave portion 33 of the mounted portion 32 and
A cylindrical pin-shaped power supply member 35 protruding outward from a is provided fixed to the bottom wall portion of the concave portion 33, and the other external lead rod 17b extending from the incandescent lamp 10 is connected thereto via a lead wire. It is electrically connected. The outer diameter of the pin-shaped power supply member 35 is smaller than the inner diameter of the recess 33. The outer end surface 3 of the pin-shaped power supply member 35
The length protruding from 2a is, for example, 5 mm or more.

In the incandescent lamp B with a base having the above-described configuration, a space is formed around the pin-shaped power supply member 35 by the concave portion 33 opened on the outer end surface 32a of the mounting portion 32. So the incandescent lamp 10
, The discharge between the spiral power supply member 34 and the pin-shaped power supply member 35 can be reliably prevented.

An incandescent lamp B with a base having the above structure
For example, when the rated voltage of the incandescent lamp 10 is 100 to 300 V, the outer diameter r2 of the mounted portion 32 and the thickness t of the outer peripheral wall located outside the concave portion 33
2 is equivalent to the outer diameter r1 of the mounted portion 22 and the thickness t1 of the outer peripheral wall of the example of FIG. The gap width w1 is 0.3 to 3 mm, preferably 0.5 to 2 mm.
When the gap width w1 is 0.3 mm or more, discharge between the spiral power supply member 34 and the pin-shaped power supply member 35 can be reliably prevented.

FIG. 3 is an explanatory sectional view showing a modified example of the base of the incandescent lamp B with the base according to the example of FIG. In this example, the projecting portion 36 is formed such that the outer end surface 32 a of the mounted portion 32 projects outward from the outer end of the spiral power feeding member 34.
Are formed. According to the incandescent lamp C with the base constituted by the base 30 having such a projecting portion 36, the spiral feeding member 34 and the pin-shaped feeding member 35 do not directly face each other due to the projecting portion 36. Discharge between the power supply member 34 and the pin-shaped power supply member 35 can be reliably prevented.

FIG. 4 is an explanatory sectional view showing an example of the configuration of a lamp with a base according to the present invention using a discharge lamp. The discharge lamp D with a base according to the example of this figure is a light emitting portion 14 composed of a filament in the incandescent lamp 10 of the example of FIG.
, A discharge tube 4 having discharge electrodes 45a and 45b
1 is provided with a discharge lamp 40 that is sealed at one end.
Is the same as in the example of FIG. Discharge lamp 40
At least a halogen-containing substance, for example, a metal halide is sealed in the discharge tube 41, and a rare gas and mercury are further sealed therein. A nitrogen gas is sealed in the tube-shaped sealing body. In this example, a protective outer tube 50 is provided so as to surround the discharge lamp 40.

In the base-equipped discharge lamp D having the above-described structure, the groove P is formed so as to surround the contact-like power supply member 26, as in the example of FIG. Accordingly, the insulation between the spiral power supply member 25 and the contact power supply member 26 is reliably increased. Therefore, even when the starting voltage of the discharge lamp 40 is as high as 2000 V or more, discharge between the spiral power supply member 25 and the contact power supply member 26 can be reliably prevented.

The discharge lamp D with a base having the above-described structure.
For example, when the starting voltage of the discharge lamp 40 is 2000 to 4000 V, the outer diameter r3 of the mounted portion 22 is 10 to 39 mm, preferably 11 to 39 mm.
39 mm, and the thickness t of the outer peripheral wall located outside the groove P.
3 is 1.5 to 7 mm, preferably 1.5 to 6 mm, and the width u2 of the groove P is 2 to 5 mm, preferably 2 to 4 mm
It is. The thickness t3 of the outer peripheral wall of the mounted portion 22 is 1.5 mm
With the above, the outer peripheral portion of the mounted portion 22 has a sufficient strength. The length of the width u2 of the groove P is 2 m
By setting m or more, discharge between the spiral power supply member 25 and the contact power supply member 26 can be reliably prevented.

FIG. 5 is an explanatory sectional view showing a modified example of the discharge lamp D with a base. A discharge lamp E with a base according to the example of this figure has a base shown in FIG. 2 in a discharge lamp D with a base having the structure shown in FIG. In this discharge lamp E with a base,
Similarly to the above, even when the starting voltage of the discharge lamp 40 is high, it is possible to reliably prevent the discharge between the spiral power supply member 34 and the pin-shaped power supply member 35.

The base-equipped discharge lamp E having the above-described structure.
For example, when the starting voltage of the discharge lamp 40 is 2000 to 4000 V, the mounting portion 32
4 and the thickness t4 of the outer peripheral wall located outside the concave portion 33 are the outer diameter r3 of the mounted portion 22 in the example of FIG.
And a thickness t3 of the outer peripheral wall, but a gap width w between the inner peripheral surface of the concave portion 33 and the outer peripheral surface of the pin-shaped power supply member 35.
2 is 2 to 5 mm, preferably 2 to 4 mm. When the gap width w2 is 2 mm or more, discharge between the spiral power supply member 34 and the pin-shaped power supply member 35 can be reliably prevented.

In the present invention, various modifications can be made. For example, the base 30 of the above-described discharge lamp E with a base can have a projecting portion 36 as in the example of FIG. Also, in the above-described incandescent lamp with base, the protective outer tube 50 shown in FIG.
Can also be provided.

[0030]

According to the lamp with the base of the present invention, even when the input voltage of the incandescent lamp or the discharge lamp is high, the insulation between the power supply members of the base is reliably increased. Discharge can be reliably prevented from occurring.

[Brief description of the drawings]

FIG. 1 is an explanatory cross-sectional view showing an example of the configuration of a lamp with a base of the present invention using an incandescent lamp.

FIG. 2 is an explanatory sectional view showing another embodiment of the lamp with a base according to the present invention.

FIG. 3 is an explanatory sectional view showing a modification of the base of the incandescent lamp with the base in FIG. 2;

FIG. 4 is an explanatory cross-sectional view showing an example of the configuration of a base-equipped lamp of the present invention using a discharge lamp.

FIG. 5 is an explanatory sectional view showing a modified example of the base of the discharge lamp with a base in FIG. 4;

FIG. 6 is an explanatory cross-sectional view showing a configuration of a base portion in an example of a conventional lamp with a base.

FIG. 7 is an explanatory diagram showing a configuration of a conventional lamp with a base using a discharge lamp.

[Explanation of symbols]

 DESCRIPTION OF SYMBOLS 10 Incandescent lamp 11 Tube-shaped sealing body 12 Sealing part 13 Exhaust pipe remaining part 14 Light emitting part 15a, 15b Internal lead rod 16a, 16b Metal foil 17a, 17b External lead rod 20, 30 Base 21, 31 Lamp holding part 22, 32 Cover Attachment part 23 Outer end face 24 Through hole 25, 34 Spiral power supply member 26 Contact-like power supply member P groove 33 Depression 35 Pin-shaped power supply member 36 Projecting portion 40 Discharge lamp 41 Discharge tube 42 Tube-shaped sealing member 43 Sealing portion 44 Exhaust tube Remaining parts 45a, 45b Discharge electrodes 46a, 46b Internal lead rods 47a, 47b Metal foils 48a, 48b External lead rods 60 Lamps 61, 62 Metal foils 63, 64 External lead rods 70 Base 71 Lamp holding part 72 Mounting part 73 External end face 74 Through hole 75 Spiral power supply member 76 Contact-shaped power supply member 80 Inside discharge lamp 81 Part container 82 External container 83 Discharge electrode 84, 85 Support lead rod 90 Base

Claims (2)

[Claims] 1. A base-equipped lamp comprising: a lamp; a base for receiving a sealed portion of the lamp; holding the lamp; and having a mounting portion to be mounted to a socket. A spiral power supply member connected to one external lead rod extending from the lamp is provided on the outer peripheral surface of the mounted part, and a tip of the mounted part is connected to the other external lead rod extending from the lamp. A contact-shaped power supply member is provided, and an annular groove surrounding the contact-shaped power supply member is formed in the mounting portion of the base so as to open on an outer end surface between the spiral power supply member and the contact-shaped power supply member. A lamp with a base characterized by being formed. 2. A base-equipped lamp comprising: a lamp; and a base having a receiving portion to be mounted in a socket, the lamp receiving a sealing portion of the lamp and holding the lamp. A spiral power supply member connected to one of the external lead rods extending from the lamp is provided on the outer peripheral surface of the mounted portion, and a concave portion that opens in a central region of the outer end surface is formed in the mounted portion of the base. In addition, a pin-shaped power supply member extending so as to protrude outward through the inside of the recess is provided in a state where the pin-shaped power supply member is connected to the other external lead rod extending from the lamp. Characterized in that a gap is formed around the pin-shaped power supply member and is larger than the outer diameter of the pin-shaped power supply member.