JP5023403B2 - Lighting device - Google Patents

Description

  The present invention relates to a lighting device having a cold cathode fluorescent lamp.

  A CCFL (Cold Cathode Fluorescent Lamp) is a fluorescent lamp that starts discharge using initial electrons existing in the CCFL and starts lighting along with the discharge. The cold cathode fluorescent lamp has a feature that the tube diameter can be reduced and the life is long as compared with the hot cathode fluorescent lamp which has been widely used conventionally. Specifically, the cold cathode fluorescent lamp has a tube diameter of 1.8 to 5.0 mm and a life of about 40 to 60,000 hours. Since the cold cathode fluorescent lamp has the above-mentioned features, it has been mainly used as a light source for backlights until now, but is now being applied to general lighting equipment.

  Japanese Unexamined Patent Publication No. 2007-66628 discloses a lighting fixture using a cold cathode fluorescent lamp. The lighting fixture disclosed in FIG. 5 of Japanese Patent Application Laid-Open No. 2007-66628 is installed on a ceiling or the like, and includes two cold cathode fluorescent lamps arranged in parallel to each other.

  As described above, the cold cathode fluorescent lamp has the features that the tube diameter is narrower and the lifetime is longer than that of the hot cathode fluorescent lamp. Therefore, the luminaire using the cold cathode fluorescent lamp has an advantage that the installation space is small and the labor for replacing the lamp can be reduced.

  Since the lighting fixture using the cold cathode fluorescent lamp has the above-described advantages, it is suitable for installation on a wall surface, for example. In this case, a plurality of luminaires are installed side by side on the wall surface, and a translucent panel member such as white is installed in front of the luminaires. Since the lighting fixture using the cold cathode fluorescent lamp has a small installation space, it does not require much depth space necessary for installation. Light is applied to the translucent panel member from a plurality of lighting fixtures installed on the back surface thereof, and the entire surface of the panel member shines. When the panel member is installed on almost the entire surface of the wall surface, the entire wall surface shines, so that an indoor space that cannot be realized by normal lighting can be produced. Moreover, the lighting fixture installed in the wall surface can be used also as illumination of the advertisement panel installed in the wall surface.

  FIG. 1 is a schematic front view showing a state in which a plurality of lighting fixtures using cold cathode fluorescent lamps related to the present invention are arranged vertically and horizontally.

  As shown in FIG. 1, when a plurality of lighting fixtures are arranged vertically and horizontally on a wall surface, the power cables 103 are sequentially connected to each other and the power is supplied to the plurality of lighting fixtures. However, the power cable 103 and the cable connection portion 101a provided on the side surface of each fixture body 101 hinder the lighting fixtures from being arranged in the vertical direction (vertical direction in the drawing). Therefore, the lighting fixtures cannot be arranged adjacent to each other in the vertical direction, and a gap is generated between the lighting fixtures arranged in the vertical direction by at least the space required for the power cable 103 and the cable connection portion 101a. Such a gap causes a dark portion (shadow) to be generated in the translucent panel member illuminated from the back side by these lighting fixtures, so that if there is a gap between the lighting fixtures, the panel member is uniformly illuminated. I can't.

  In the configuration in which the power cables 103 are sequentially connected to a plurality of lighting fixtures to supply power as shown in FIG. 1, the plurality of lighting fixtures are arranged when the plurality of lighting fixtures are installed on a wall surface or the like. Since it is necessary to perform the work and the work of sequentially connecting the power cable 103 to them, the installation work requires a lot of time and labor.

  Therefore, an object of the present invention is to provide a lighting apparatus that can make dark portions (shadows) generated when arranged side by side inconspicuous and that can simplify the connection work of a power source.

In order to achieve the above object, an illumination device of the present invention includes a cold cathode fluorescent lamp and a fixture main body on which the cold cathode fluorescent lamp is provided, and the cold cathode fluorescent lamp on the fixture main body is provided. The male body has a regular polygonal shape, and the instrument body has a male power connector having a step formed at the tip portion formed of two portions having different lengths in the insertion direction, and the male power connector. wherein the female type power connector, the equipped by at least one of each, and on each side of the instrument body of the supply connector of the male type female having a step that engages the distal portion by the inserted Any one of the power connector of the shape is provided.

  ADVANTAGE OF THE INVENTION According to this invention, while being able to make the dark part (shadow) produced when arrange | positioning side by side inconspicuous, the lighting fixture which can simplify the connection operation | work of a power supply can be provided.

It is a schematic front view which shows the state which installed the some lighting fixture using the cold cathode fluorescent lamp relevant to this invention side by side vertically and horizontally. It is a schematic block diagram which shows the lighting fixture which concerns on one Embodiment of this invention. It is a schematic block diagram which shows the lighting fixture which concerns on one Embodiment of this invention. It is a schematic plan view which shows the state which connected the lighting fixture shown to FIG. 2A and FIG. 2B to the vertical and horizontal direction.

  Next, embodiments of the present invention will be described with reference to the drawings.

  2A is a plan view of a lighting fixture according to an embodiment of the present invention, and FIG. 2B is a side view of the lighting fixture viewed from the direction of arrow A in FIG. 2A.

  The lighting fixture of the present embodiment has a fixture main body 1 and a plurality of cold cathode fluorescent lamps (CCFL) 2 mounted on the fixture main body 1. The cold cathode fluorescent lamp 2 has a tubular glass bulb. A phosphor film is formed on the inner surface of the bulb. An inert gas such as argon (Ar) or neon (Ne) and mercury (Hg) are enclosed in the bulb. Cold cathode type electrodes are provided at both ends of the bulb. Each of the cold cathode type electrodes is connected to a lighting circuit (not shown) provided in the instrument body 1 via a wiring (not shown).

  In the lighting fixture of this embodiment, the surface on which the cold cathode fluorescent lamp 2 of the fixture main body 1 is disposed has a square shape, and five cold cathode fluorescent lamps 2 are attached to each fixture main body 1. Installed in parallel. Therefore, the lighting fixture of this embodiment has a form as a planar lighting device.

  Of the four side surfaces of each instrument body 1, a male power connector 3 a is provided on two side surfaces adjacent to each other, and a female power connector 3 b is provided on the other two side surfaces adjacent to each other. It has been. The male power connector 3 a protrudes from the side surface of the instrument body 1, while the female power connector 3 b is provided inside the instrument body 1. These power connectors 3a and 3b are connected to a lighting circuit (not shown) in the instrument body 1. And the electric power input from one power supply connector is output from another power supply connector, after being supplied to the lighting circuit. Therefore, the lighting fixture of the present embodiment can realize so-called power-through supply in which power is sequentially supplied through each lighting fixture by sequentially connecting connectors when sequentially connecting a plurality of lighting fixtures. Is possible.

  FIG. 3 is a schematic plan view showing a state where the lighting fixtures shown in FIGS. 2A and 2B are connected in the vertical and horizontal directions.

  Since the power supply connectors 3a and 3b are provided as described above in each of the appliance main bodies 1 of the present embodiment, the other in both the vertical and horizontal directions (up, down, left and right in FIG. 3) with respect to one lighting fixture. Can be connected. Therefore, a plurality of lighting fixtures can be appropriately combined according to the size and shape of the wall surface or the like on which the lighting fixtures are installed.

  Furthermore, the lighting fixture of this embodiment is configured to supply power via the power connectors 3a and 3b, and does not include a power cable. Therefore, the lighting fixture of this embodiment does not need to secure a space for the power cable at the time of installation, and it is possible to sequentially connect a plurality of lighting fixtures adjacent to each other. It is possible to make the dark part (shadow) generated in the inconspicuous. Therefore, the panel member arrange | positioned at the front surface of the some lighting fixture installed in the wall surface etc. can be made to shine uniformly.

  Furthermore, according to the lighting fixture of this embodiment, when installing the lighting fixture on the wall surface or the like, the power fixtures 3a and 3b can be connected while the lighting fixture is arranged adjacent to the lighting fixture. Compared with the background art that needs to connect the power cable later, the power connection work can be greatly simplified.

  In the above description, the case where the lighting fixture includes five cold cathode fluorescent lamps 2 has been described as an example. However, the number of cold cathode fluorescent lamps included in one lighting fixture is not limited to five. There may be less or more. Moreover, you may install in the instrument main body 1a one cold cathode fluorescent lamp formed in the spiral shape or the zigzag shape.

  Moreover, although the case where the instrument body 1 has a square shape has been described above as an example, the shape of the instrument body 1 is another shape such as a regular polygon including a regular triangle or a rectangular shape. Also good. The arrangement of the cold cathode fluorescent lamp 2 in the instrument body 1 can be changed as appropriate according to the shape of the instrument body 1.

  Furthermore, the arrangement configuration of the male power connector 3a and the female power connector 3b in the instrument body 1 is not limited to the above arrangement. If a plurality of lighting fixtures can be sequentially connected, the fixture body 1 includes at least one male power connector 3a and a female power connector 3b, and each side surface of the fixture body 1 is provided on each side surface. As long as one of the male power connector 3a and the female power connector 3b is provided, the power connectors 3a and 3b may have any arrangement. For example, in the instrument body 1 having the same shape, the arrangement configuration of the male power connector 3a and the female power connector 3b may be the same, or the male power connector 3a and the female power connector 3b may be the same. A plurality of types of instrument main bodies 1 having different arrangement configurations may be prepared and combined.

  While the present invention has been described with reference to the embodiments, the present invention is not limited to the above embodiments. Various changes that can be understood by those skilled in the art can be made to the configuration and details of the present invention within the scope of the present invention.

  This application claims the benefit of priority based on Japanese Patent Application No. 2007-208157 filed on Aug. 9, 2007, the entire disclosure of which is incorporated by reference.

Claims (3)

A cold cathode fluorescent lamp;
An instrument body on which the cold cathode fluorescent lamp is disposed,
The surface on which the cold cathode fluorescent lamp of the instrument body is disposed has a regular polygonal shape,
The instrument body is engaged with the distal end portion by inserting a male power connector having a step formed at two portions having different lengths in the insertion direction at the distal end portion and the male power connector. and a power supply connector of the female comprises one by at least one of each, and one of the power connector of the female power supply connector of the male type on each side of the instrument body is provided with a step Lighting device. The lighting device according to claim 1 , wherein the surface of the instrument body has a square or rectangular shape. Of the four side surfaces of the instrument body, the male power connector is provided on two side surfaces adjacent to each other, and the female power connector is provided on the other two side surfaces adjacent to each other. The lighting device according to claim 2 .

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