JPH0620256Y2 - lighting equipment - Google Patents

Description

Description: TECHNICAL FIELD The present invention has an arc tube formed by communicating the internal spaces of a plurality of straight tube-shaped shells arranged substantially parallel to each other, and has one end in the longitudinal direction of the arc tube. The present invention relates to a lighting fixture using a single-base fluorescent lamp having a base on the side.

[Background Art] Recently, a plurality of straight tubes arranged substantially in parallel to each other, such as a bent arc tube in a U-shape or a double U-shape, or a bridge of a plurality of straight-tube arc tubes, have been used. There is provided a single-base fluorescent lamp having an arc tube formed by communicating the inner space of the element tube with one another, and having a cap provided at one end side in the longitudinal direction of the arc tube. 4 and 5 show a luminaire including a lamp having an arc tube in which two straight tube arc tubes are bridged in such a lamp. The lighting fixture of FIG. 4 is mounted on a ceiling surface or the like, and the lamp 1 is stored in a storage recess formed in the lower surface of the storage case 15, and a circuit block 1 in which a lighting circuit and the like are stored in the upper portion.
6 is attached. Further, in the lighting equipment of FIG. 5, a storage case 15 having a lower surface opening in which the lamp 1 is attached is attached to an upper end of a stand 17, and a lighting block 16 is provided at a base of the stand 17. This type of lamp 1 has the advantage of being small and capable of achieving high wattage. However, due to the characteristics of the lamp 1, the lamp 1 is very susceptible to the direction of the lamp and the inclination of the appliance, the lamp current is not stable, and even when the lamp current is constant at the time of starting, it is dark, and the interior of the arc tube is tens of times stable. Minutes (about 20 minutes) are also required, and when the lamp reaches the end of its life, it will be in an emile state, causing various problems such as an increase in secondary voltage.

[Object of the Invention] The present invention has been made in view of the above points, and an object thereof is to form the inner spaces of a plurality of straight tube-shaped element pipes arranged substantially parallel to each other so as to communicate with each other. Another object of the present invention is to provide a lighting fixture which has a light emitting tube and which has a base on one end in the longitudinal direction of the light emitting tube so as to stably turn on a fluorescent lamp of a single base or which does not cause a problem at the end of its life.

DISCLOSURE OF THE INVENTION (Structure) The present invention has an arc tube formed by communicating the internal spaces of a plurality of straight tube-shaped shells arranged substantially parallel to each other, and has a cap at one end side in the longitudinal direction of the arc tube. A single-base fluorescent lamp provided with, a printed wiring board mounted with electronic components constituting a lighting circuit arranged in the vicinity of the fluorescent lamp in parallel with the longitudinal direction of the arc tube, and the fluorescent lamp near the fluorescent lamp. The detection means for detecting the operating state and the control means for controlling the lighting circuit according to the output of the detection means are provided, and the detection means is mounted on the printed wiring board.

By adopting the above configuration and controlling the lighting state of the fluorescent lamp through the lighting circuit by the control means according to the operating state of the fluorescent lamp detected by the detection means, the arc tube of the above-mentioned shape having various problems is provided. The fluorescent lamp can be lit in a stable manner so that the problem of end of life will not occur.

(Embodiment) FIGS. 1 to 3 show an embodiment of the present invention. As shown in FIG. 3, the lamp 1 of the present embodiment is provided with an arc tube 2 formed in an approximately H shape by connecting one ends of two straight tubes with a thin tubular connecting portion 3. A base 4 is attached to the other end of the arc tube 2 to form a single base fluorescent lamp, and a terminal portion 6 is projected and a terminal portion 5 to be mounted in a socket 7 is provided so as to project from the base 4. This lamp 1 has an upper cover 9 which is a lower opening.
And a terminal plate 5 attached to a socket 7 fixed to one end of the storage case 15 which is disposed in a storage case 15 having an opening on the lower surface formed of a reflection plate 10 attached to the upper cover 9 and reflecting the light of the lamp 1. Can be installed and mounted sideways. Above the lamp 1, a printed wiring board 8 on which electronic components constituting a lighting circuit and the like are mounted is arranged in parallel with the longitudinal direction of the lamp 1. Electronic components forming a lighting circuit are mounted on the printed wiring board 8, and the lighting circuit and the socket 7 are connected by a plurality of lead wires 11. On this printed wiring board 8, for example, a component or structure for detecting the luminous flux of the lamp, the emily state, the temperature of the lamp 1, etc. is mounted or formed as a detecting means. Specifically, the temperature sensitive element 12 for detecting the temperature of the lamp 1 is connected to the printed wiring board 8
The temperature of the lower lamp 1 is detected by mounting the lamp 1 in the hole drilled in 1. The temperature of the connecting portion 3 is detected in the case of the lamp 1 having the shape shown in FIG. The temperature inside the storage case 15 may be detected by the temperature sensitive element 12. In addition to the temperature sensitive element 12, a light receiving element for detecting the luminous flux of the lamp 1 or detecting the emily state may be provided. Further, a pattern 13 meandering with steel foil is formed on the arc tube 2 portion of the printed wiring board 8, and the pattern 13 is used as a current detection pattern for detecting a lamp current or a proximity for facilitating discharge of the lamp 1. Induction pattern with conductor function or lamp 1
Is used as a preheating pattern for preheating. The lamp 1 is placed on the printed wiring board 8 thus arranged in parallel with the lamp 1.
By providing the control means for controlling the operation of the lighting circuit according to the output of the element 12 by providing the element 12 for detecting the operating state of the lamp 1, the characteristics of the lamp 1 can be stabilized according to the state of the lamp 1, It is possible to improve the illuminance at the time of starting and to suppress the secondary voltage at the end of life.
In addition to preventing problems in a single-base fluorescent lamp, the lighting circuit and the element 12 are combined into a single printed wiring board 8.
By mounting the printed wiring board 8 on the lighting device, a simple structure having a flat plate shape can be used as the printed wiring board 8 without requiring a separate structure for fixing the element 12. Has become easier.

Incidentally, the socket 7 may have the socket 7 directly mounted on the printed wiring board 8 as shown in FIG. In this case, the component side of the printed wiring board 8 is the lamp 1
Since it is oriented in the direction of, the sensing element such as the temperature sensitive element 12 can be mounted as it is without making a detection hole, and since the connection by the lead wire 11 is eliminated, the structure of the instrument can be simplified and the assembly is easy. Becomes In FIG. 2, the preheating element 14 is mounted on the portion of the lamp 1 located above the straight tube portion.

[Advantages of the Invention] As described above, the present invention has an arc tube formed by communicating the internal spaces of a plurality of straight tube-shaped shells arranged substantially parallel to each other, and has the arc tube on one end side in the longitudinal direction of the arc tube. A single-base fluorescent lamp provided with a base, a printed wiring board on which electronic components constituting a lighting circuit are mounted in the vicinity of the fluorescent lamp in parallel with the longitudinal direction of the arc tube, and the fluorescent lamp near the fluorescent lamp. The operating state of the fluorescent lamp detected by the detecting means, which is provided with the detecting means for detecting the operating state of the fluorescent lamp and the controlling means for controlling the lighting circuit according to the output of the detecting means, and the detecting means is mounted on the printed wiring board. In accordance with the control means controls the lighting state of the fluorescent lamp through the lighting circuit, it is possible to stably turn on even a fluorescent lamp having an arc tube of the above-mentioned shape having various problems. It has the advantage of not causing problems. Moreover, since the detecting means is provided on the printed wiring board which is disposed in parallel and in parallel with the single-ended fluorescent lamp, a separate structure is not required to fix the detecting means, and a simple printed wiring board is used. The lighting circuit and the detecting means can be arranged, and the printed wiring board can be easily incorporated into the lighting fixture.

[Brief description of drawings]

FIG. 1 is a perspective view of a main part showing the construction of an embodiment of the present invention, FIG. 2 is a perspective view of the main part of another embodiment of the present invention, and FIG. 3 is a plan view of a lamp used therein. 4 and 5 are external perspective views of a conventional example. Reference numeral 1 is a lamp, 2 is an arc tube, 7 is a socket, and 8 is a printed wiring board.

Claims (2)

[Scope of utility model registration request] Claim: What is claimed is: 1. A single-base fluorescent lamp having an arc tube formed by connecting the inner spaces of a plurality of straight tube-shaped tube tubes arranged substantially in parallel with each other and having a cap on one end side in the longitudinal direction of the arc tube. A lamp, a printed wiring board on which electronic components that constitute a lighting circuit are arranged in the vicinity of the fluorescent lamp in parallel with the longitudinal direction of the arc tube, and a detection means for detecting the operating state of the fluorescent lamp in the vicinity of the fluorescent lamp. And a control means for controlling the lighting circuit according to the output of the detection means, and the detection means is mounted on a printed wiring board. 2. A utility model registration claim in which a socket for mounting the lamp is mounted on the printed wiring board.
Lighting equipment according to the paragraph.