JPH08287723A - Lighting equipment - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a garden lighting system having low voltage power distribution lines which can be informally and safely laid in a garden and having a comparatively much higher and/or cost effective light output than when using other forms of fluorescent lamps. SOLUTION: This lighting system for a garden includes a plurality of fluorescent lamps supplied with low voltage power (12 volt) flowing in a cable 14 extending between fluorescent lamp sockets 15. Each of the sockets 15 has converter circuits for generating a high voltage high frequency power supply.

Description

Detailed Description of the Invention

[0001]

TECHNICAL FIELD The present invention relates to a lighting device.

In particular, the present invention mainly relates to a lighting device which is usually used outdoors at home,
It is not necessarily limited to outdoor use.

[0003]

2. Description of the Related Art Conventionally, when a fluorescent lamp is used for a lighting device for space, a high frequency power supply is used, but it is convenient when it is routinely installed around a garden or a house. Was bad and inappropriate. For garden lighting,
It is also well known to use a low voltage series current supply and to use a halogen lamp. However, it is not appropriate to equate the use of such a device or halogen lamp with the embodiment of the present invention. The performance of conventional cables and fluorescent lamps is inferior in terms of reliability, especially over long periods of time, and in addition, the installation costs and the power consumption per unit lumen of light output are very high.

[0004]

The present invention has been devised under the circumstances as described above, and has a low-voltage power supply cable that can be safely placed in a garden on a daily basis, and has a light output. It is an object to provide a lighting device which is large and advantageous in terms of cost.

[0005]

DISCLOSURE OF THE INVENTION An illuminating device according to the present invention is a illuminating device for supplying a plurality of fluorescent lamps which are formed separately from each other and arranged in a region illuminated by illumination, and a plurality of fluorescent lamp sockets and A low voltage power supply cable connecting the socket to a single supply point, wherein each socket is supplied with a low voltage low frequency supply power and a high voltage high frequency supply voltage for each fluorescent lamp. It is characterized by including an electric circuit for converting into.

The lighting device of the present invention may include a transformer that connects the single supply point and the supply power of the house in order to convert the supply power of the house into the low-voltage supply power.

The lighting device of the present invention may include a light-sensitive switch connected to automatically turn on / off the electric power supplied to the socket according to changes in ambient light.

The garden lighting device of the present invention will be described below based on embodiments with reference to the accompanying drawings.

[0009]

BEST MODE FOR CARRYING OUT THE INVENTION The plug 9 shown in FIG.
It is provided for connecting the transformer 10 and a household power source in order to convert a household voltage of 0 or 100 volts into 12 volts. The 12 volt low voltage power is typically at a low frequency of 50 or 60 Hertz,
It can be further lowered and may be a direct current. This low voltage power is supplied to the outlet socket or single supply point 12 via a light sensitive switch 11. The plug 13 is connected to one low-voltage power supply cable 14, and a plurality of fluorescent lamp sockets 15 are connected to the cable 1.
4 is connected to the cable along the length direction.
The cable 14 may form a closed loop starting from the supply point 12. An electric circuit (see FIG. 3) is incorporated in each fluorescent lamp socket 15 and is configured to receive a plug terminal of a standard size small fluorescent lamp (not shown). The fluorescent lamp is typically 5-11 watts.

FIG. 2 shows three different types of upright fluorescent lamps. These fluorescent lights are configured for use outside the house (hotel or other building), for example to illuminate a garden or driveway. The cables usually need only be placed on or near the ground and are connected to the bottom of the support of each fluorescent lamp.

Each fluorescent lamp socket has a conversion circuit (see FIG. 3).
) Is provided and the circuit includes a full-wave rectifier 20 and optionally a Zener diode 21 for limiting the voltage developed on the rectifier 20. The multi-winding transformer 22 whose switch is automatically opened and closed by the transistor 23 has an initial voltage of 5
Normal power at 0 volts, 170 milliamps and a frequency of 24 kilohertz is supplied to the fluorescent lamp outlet socket 24 for connection to the fluorescent lamp 25. Further, even during use, the transformer 22 supplies power to the socket 24 for the heating filament of the fluorescent lamp 25.

The circuit of FIG. 3 is for converting a low voltage input and supplying appropriate power to drive a fluorescent lamp, and the circuit itself is well known. Other similar circuits are well known and can be used in the lighting device of the present invention.

The circuit of FIG. 3 includes a sensor responsive to the intensity of ambient light, and each fluorescent lamp 25 is automatically and individually turned on and off. May be included. This switch can be used instead of or in addition to switch 11 of FIG.

Referring to FIG. 4, there is shown a configuration of a lighting device which is particularly convenient for "field" assembly and which is easier to store and transport. The power supply cable 3 is attached to the support 30.
Opposing slots 31 are provided to receive 2 and 33. Each of the cables extends inside a tube 34 that is attached to the support base without a gap, and is connected to a connection plate (not shown) on the bottom surface of a socket 35 with a screw. The outlet adapter 36 is the socket 3
5 is configured to be tightly received and its body surrounds and supports the circuit shown in FIG. On the upper surface of the adapter 36, a socket (not shown) for receiving the plug terminal of the standardized small fluorescent lamp 37 is provided. The weather protection cover 38 is detachably provided so as to cover the fluorescent lamp 37,
The ground driving pile 39 is fitted into the bottom portion of the support base 30.

The above lighting device can be conveniently provided as a set of parts that can be assembled and installed by the purchaser, and can be arranged according to the purchaser's request. May be. Usually, the set can be stored very flat in a single heavy box containing one low voltage cable. The cable can be easily cut to length and safely placed underground or inside a house. Due to the low voltage power of the cable, the device of the present invention is safe and there is no concern if the cable is accidentally damaged and touched. By using an alternating voltage (at relatively low household frequencies), the otherwise prone to corrosion tendency of conductors in the cable can be reduced or eliminated. In this embodiment, since the full-wave rectifier is used, the lighting device need not care about the polarity.

The power supplied by the cable is converted at each fluorescent lamp outlet socket. Since the voltage of the supplied power flowing through the cable is low, the power loss in the cable is small.

[Brief description of drawings]

FIG. 1 is a schematic layout diagram of a lighting device of the present invention.

FIG. 2 is an isometric view of a lighting device of the present invention.

FIG. 3 is a circuit diagram of a lamp socket of the lighting device of the present invention.

FIG. 4 is an assembled isometric view of a lamp assembly used in the present invention.

[Explanation of symbols]

 10 Transformer 11 Light Sensitive Switch 12 Single Supply Point 14 Low Voltage Power Supply Cable 15 Fluorescent Lamp Socket 25 Fluorescent Lamp 30 Support 34 Tube 35 Screwed Socket 36 Adapter 38 Weather Protection Cover

Claims (4)

[Claims] 1. A lighting device for supplying a plurality of fluorescent lamps, which are formed separately from each other and are arranged in a region illuminated by a lighting, comprising a plurality of fluorescent lamp sockets and a single supply point for the sockets. A low-voltage power supply cable (14) connected to (12), and a low-voltage low-frequency power supply to each of the sockets at a high-voltage high-frequency supply for each fluorescent lamp (25). A lighting device comprising an electric circuit (FIG. 3) for converting into a voltage. 2. A transformer (10) for connecting the single supply point and the supply power of the house so as to convert the supply power of the house into a low voltage supply power. The lighting device according to. 3. A light-sensitive switch (11) connected to automatically turn on and off the electric power supplied to the socket according to changes in ambient light. 2. The lighting device according to any one of 2. 4. A tube for receiving a support (30), a tube (34) mounted at one end of the support without a gap, and an adapter (36) having the electrical conversion circuit and having an outlet socket. 4. The lighting device according to claim 1, further comprising a threaded socket (35) provided at the other end of the lighting device and a weather protection cover (38) attached to the adapter.