JPH08250077A - Straight tube incandescent light bulb with reflector - Google Patents

Abstract

(57) [Summary] (Modified) [Purpose] Development of a bulb with a reflector that uses a straight tube incandescent bulb as a light source. [Structure] A plug-in base 7 is provided on an outer wall of a reflector housing having a straight tube incandescent lamp as a light source, in a direction orthogonal to the direction of the straight tube of the light source.

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a straight glass tube with a filament arranged in the direction of the tube axis, and a light bulb of a small incandescent lamp having both ends of the tube axis formed in a thick sealed portion with electrodes as a light source. Regarding lighting bulbs.

[0002]

2. Description of the Related Art Recently, the small incandescent light bulb described above, in which both ends of a straight glass tube are formed in a thick sealed portion with electrodes, has been developed as a versatile light bulb in addition to lighting. By the way, this straight tube type incandescent lamp requires a unique receiving socket adapted to it due to the peculiarities of its electrodes. As a receiving socket for that purpose, conventionally, a socket means for providing a receiving electrode for contacting a light bulb electrode to a holding member for sandwiching a sealing portion, which is directly or indirectly fixedly placed in a placement place, or a bulb sealing by this holding member It has been used by a means for mechanically holding a portion and connecting a lead wire drawn out as an electrode wire from the sealing portion to a power line terminal provided at another position of the socket.

[0003]

However, these conventional sockets are intended for use in which a large number of straight tube type incandescent light bulbs are connected, and are not suitable for single use of light bulbs. Therefore, an object of the present invention is to develop a lighting bulb equipped with a socket device suitable not only for single use of such a straight tube type incandescent bulb but also for continuous use.

[0004]

In order to achieve the above object, the present invention is to insert a straight tube type incandescent lamp as a light source into an outer wall of a reflector housing in a direction orthogonal to the direction of the light source straight tube. Provide a die base. Further, with respect to the pair of reflector head housing side holding members for sandwiching the electrode-equipped both-end sealing portion of the straight tube type incandescent light bulb, the both-end sealing portion is formed at an eccentric position of the tube axis, It is configured such that the position of the bulb tube axis with respect to the reflection surface of the housing is changed to change the occupied position.

[0005]

[Function] A straight tube type incandescent light bulb with a separate reflector can be illuminated efficiently, and it can be mounted using the existing socket for receiving by the insertion type base provided on the outer wall of the reflector housing. You can By projecting this plug-in base in a direction orthogonal to the direction of the light source body straight tube, the irradiation light is not blocked by the base and the socket, and the light bulb can be easily attached to the socket. it can. The reflector is set to have a predetermined reflection curved surface with respect to the position of the light source for effective reflection. By moving the light source position with respect to the fixed reflecting surface, the reflected light is condensed or diverged toward the illuminated surface. Therefore, a straight tube type incandescent light bulb in which both end sealing parts (holding parts) are eccentric to the tube axis (light source position) with respect to a structure part in which the light bulb / holding member and the reflecting surface of the reflector housing are integrated. By replacing and mounting the light bulb in an eccentric direction, the position of the light source of the light bulb can be changed in the occupied position with respect to the housing reflection surface, and the state of the irradiation light can be changed.

[0006]

The present invention will be described in detail below with reference to the embodiments of the present invention shown in the drawings. FIG. 1 is a front view showing an embodiment of the present invention, and FIG. 2 is a semi-cut vertical side view showing a standing piece 2 which is arranged opposite to a reflector housing 1 having an inner surface finished as a reflecting mirror surface with a holding gap. , 2 are provided, and the straight tube type incandescent light bulb 3 is provided between the pair of holding members, and the standing pieces 2, 2 are provided.
The both ends of the bulb 3 are inserted between them to be mounted.

In mounting this light bulb, the lower edge of the sealing portion 4 is brought into contact with the positioning protrusion 5 protruding from the bottom surface of the housing 1,
The upper edge of the sealing portion 4 is brought into contact with the tip fishing portion 6 of the upright piece 2, and the material elasticity of the upright piece 2 holds the bulb 1 under positioning. A wedge base cap 7 as a plug-in cap is formed on the outer wall of the housing 1 so that its insertion direction is orthogonal to the tube axis direction of the light bulb 3, and both ends of the light bulb 3 are sealed. The electrode lead-out wires 8 and 8 drawn out from the lead wires 4 and 5 are drawn into the base 7 and are turned back to form a base electrode. FIG. 3 is a perspective view of the light bulb of the present invention.

FIG. 4 is a side view showing an example of a straight tube type incandescent light bulb used in the light bulb of the present invention. According to the illustrated embodiment, both ends sealing portion 4 of the bulb straight tube portion 9 is formed to have a wall thickness with a lateral width of about half of the tube diameter, and Both ends are in the same direction and are eccentric to the tube axis. When the straight tube incandescent light bulb 3 thus formed is mounted on the reflector housing 1 as shown by the solid line in FIG. 2, the tube axis (filament position) of the light bulb 3 is located at the center of the reflection surface, The main reflected light emerges as parallel rays. On the other hand, when the light bulb 3 is mounted in the state shown in the upper chain line in the figure, the tube axis position of the light bulb 3 rises with respect to the reflection surface, and as a result, the reflected light is emitted as diffused light. It

FIG. 5 is a perspective view showing another embodiment of the light bulb of the present invention, in which the wedge base cap 7 is projected near the light irradiation opening on the outer wall of the housing in a direction orthogonal to the direction of the tube axis. It is provided. Further, as another embodiment, as the insert type spinneret, in addition to the wedge base spinneret described above, a pin type and a glow ball type in which the pin tip is formed into an expanded nail head are applied.

[0010]

According to the electric bulb of the present invention having such a structure, each straight bulb type incandescent light bulb with a reflector is inserted into a conventional insertion type receiving socket which is grounded at a predetermined interval in advance. The electric bulb of the present invention is extremely useful as a practical instrument which can be easily attached and can be efficiently illuminated, since it can be used not only by itself but also by being used continuously. Furthermore, using a straight tube type incandescent light bulb having a sandwiching sealing portion provided at an eccentric position with respect to the tube axis,
By changing the insertion direction to the reflector housing, the state of the irradiation light can be easily changed to diffusion or condensing, and the light bulb of the present invention can be used in various light irradiation states according to the purpose of use. .

[Brief description of drawings]

FIG. 1 is a front view showing an embodiment of a light bulb of the present invention.

FIG. 2 is a vertical sectional side view taken along line AA in FIG. 1 of the light bulb of the present invention.

FIG. 3 is a perspective view of the light bulb of the present invention.

FIG. 4 is a side view showing another embodiment of the straight tube type incandescent light bulb used in the light bulb of the present invention.

FIG. 5 is a perspective view showing another embodiment of the light bulb of the present invention.

[Explanation of symbols]

 1 Reflective Umbrella Case 2 Standing Piece 3 Straight Tube Type Incandescent Light Bulb 4 Both Ends Sealing Part 7 Wedge Base Base 8 Electrode Lead Wire

Claims (2)

[Claims] 1. A direct reflector with a reflector, characterized in that a plug-type cap is provided on the outer wall of a reflector housing which uses a straight tube incandescent lamp as a light source, in a direction orthogonal to the direction of the straight tube of the light source. Tube type incandescent light bulb. 2. A straight tube type incandescent light bulb, wherein a pair of reflector-housing-side holding members for sandwiching the both-end sealing portion with electrodes sandwiches the both-end sealing portion at an eccentric position of the tube axis. 2. A structure in which the position of the bulb tube axis with respect to the reflection surface of the housing is changed by changing the insertion direction.
Straight tube incandescent light bulb with a reflective umbrella as described.