JPS63301404A - Table lamp - 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 OBJECTS OF THE INVENTION (Industrial Application Field) The present invention relates to a desk lamp in which a lamp equipped with a lamp is supported by a flexible pipe.

(Prior Art) This type of desk lamp has a lamp attached to the inside of a shade to form a lamp, and this lamp is supported by a flexible pipe. A flexible pipe is constructed by winding a filament with a triangular cross section into a coil, and interposing a coiled wire between the coil pitches of the filament in close contact with the side surface of the filament so that the flexible pipe can be bent. ing. Therefore, the direction of the lamp can be changed by appropriately bending this flexible pipe with one's hand, and the bent state is stably maintained by the frictional force between the side surface of the filament and the wire.

On the other hand, a straight tube fluorescent lamp is generally used as a light source for a desk lamp. In the case of such a lamp, sockets are provided at both ends of the shade, and since these sockets support both ends of the lamp, the entire lamp becomes symmetrical, and its center of gravity is determined in the middle of the lamp. Therefore, by connecting the flexible pipe to the intermediate portion, the lamp can be stably supported.

Recently, a so-called U-line type fluorescent lamp has been developed in which a conventional straight tube fluorescent lamp is bent into a U-shape and the terminals at both ends are placed at one end in the longitudinal direction of the lamp. offered to the market. When such a U-line lamp is used in a desk lamp, a socket is provided at one end in the longitudinal direction of the shade, and the lamp is supported in a cantilevered manner by this socket. In a lamp, the center of gravity is eccentric to one end of the lamp, and therefore it is common to support the lamp by connecting a flexible pipe to the end of the one end.

(Problem to be Solved by the Invention) However, when a flexible pipe is connected to one longitudinal end of a lamp in this way, a force, or moment, is generated that tries to rotate the lamp downward using the connected part as a fulcrum. This moment applies a relatively large torque to the flexible pipe, which may cause the lamp to inadvertently hang downward due to vibration or the like. This invention is aimed at solving these problems.

[Structure of the Invention] (Means for Solving the Problems) In order to solve the above-mentioned problems, the present invention involves winding a filament body having a triangular cross section into a coil shape, and winding the filament body into a coil. A flexible pipe is constructed by interposing a coiled wire in close contact with the side surface of the filament between the pitches, and one end of the flexible pipe is connected to one end in the longitudinal direction of a lamp equipped with a lamp to form the lamp. is supported almost horizontally, and the direction in which the coil of the filament is wound is made to coincide with the direction in which the lamp rotates downward with the connecting portion between the flexible pipe and the lamp as a fulcrum. .

(Function) A torque is applied to the flexible pipe in the direction in which the lamp tries to rotate downward, but this is because the winding direction of the coil of the flexible pipe and wire body matches the direction of the torque. The torque acts to reduce the coil pitch of the filament, which increases the frictional force between the side of the filament and the wire, increasing the resistance of the flexible pipe to twisting, which prevents accidental damage to the lamp. This prevents drooping.

(Example) Hereinafter, an example of the present invention will be described with reference to the drawings.

In the figure, reference numeral 1 denotes a base, and a support 2 is attached to the upper surface of the base 1, and a flexible pipe 3 is connected to the upper end of the support 2. The flexible pipe 3 includes a filament body 4 made of metal such as steel having a triangular cross section, which is wound in a coil shape, and the filament body 4 is in close contact with the side surface of the filament body 4 between the coil pitches. It is constructed by interposing a wire 5 made of a coiled piano wire or the like, and by applying a force above a certain level to the filament body 4, the filament body 4 can be bent, and the side surface of the filament body 4 and the wire 5 can be bent. The bent state is maintained by the frictional force between the

Reference numeral 6 denotes a lamp, and this lamp 6 includes a shade 7 made of transparent synthetic resin, a socket 8 provided inside one longitudinal end of the shade 7, and a U-line attached to the socket 8. It consists of a shaped lamp 9. The tip of the flexible vibrator 3 is connected to one end of the lamp 6, so that the lamp 6 is supported substantially horizontally through the flexible pipe 3. The filament 4 of the flexible pipe 3 is located at its tip end, that is, the lamp 6.
It is wound clockwise toward the connecting part. In addition,
Although not shown, a lighting energizing device such as a ballast is housed in the base 1, and a lead wire led out from the lighting energizing device passes through the flexible pipe 3 and is connected to the socket 8.

Next, we will discuss the effect.

A force acting on the lamp 6 to rotate it downward about the connection with the flexible pipe 3 as a fulcrum, that is, a clockwise moment when the desk lamp shown in FIG. 1 is viewed from the back. This moment applies torque to the flexible pipe 3. Here, since the filament body 4 of the flexible pipe 3 is wound in a clockwise coil shape toward its distal end, the torque acts to reduce the coil pitch interval, thereby causing the filament body to The frictional force between the wire 5 and the side surface of the flexible pipe 3 increases, and the opposing force against the twisting of the flexible pipe 3 increases, thereby reliably preventing the lamp 6 from hanging down unexpectedly, and maintaining the proper position of the lamp 6 at all times. be done.

[Effects of the Invention] As explained above, according to the present invention, it is possible to reliably prevent the lamp from hanging down unexpectedly and to maintain the lamp in a proper posture at all times.

[Brief explanation of the drawing]

The drawings show an embodiment of the present invention, in which Fig. 1 is a perspective view of the entire desk lamp, Fig. 2 is a bottom view of the lamp, Fig. 3 is a front view of the flexible vibe, and Fig. 4 is the structure of the flexible pipe. FIG. 3...Flexible vibe, 4...Striatum, 5...
・Wire, 6...Lamp, 9...Lamp. Applicant's representative Patent attorney Takehiko Suzue Figure 3 Figure 4 Procedural amendment 1, Indication of the case Japanese Patent Application No. 1982-136225 2, Name of the invention Electric lamp 3, Person making the amendment Relationship with the case Patent applicant: Toshiba Kiki Corporation 4; Agent: UBE Building 7, 3-7-2 Kasumigaseki, Chiyoda-ku, Tokyo;
Contents of the amendment (1) The words "clockwise" on page 6, line 6, line 15, and line 18 of page 6 of the specification are corrected to "counterclockwise." ≠ (2) Figures 1 and 8 of the drawings will be corrected as shown in the attached sheet. Figure 1 Figure 4

Claims (1)

[Claims] A flexible pipe is constructed by winding a filament with a triangular cross section into a coil, and interposing a coiled wire in close contact with the side surface of the filament between the coil pitches of the filament. One end of the lamp is connected to one end in the longitudinal direction of a lamp provided with the lamp to support the lamp substantially horizontally, and the winding direction of the coil of the filament is set to the connecting part between the flexible pipe and the lamp. A desk lamp characterized in that the direction of rotation of the lamp as a fulcrum is made to coincide with the direction of downward rotation of the lamp.