JP4428288B2 - Lighting device - Google Patents

Description

  The present invention relates to an illumination device, and more particularly to a plate-like illumination device that performs illumination with electric power supplied from an external power supply via a power cable.

Conventional lighting devices that use halogen bulbs or discharge lamps as light sources are not only large in size but also difficult to handle due to the large amount of heat generated by light emission, especially on desks, hands, and human faces. It was unsuitable as an illuminating device that partially illuminates only.
On the other hand, for example, Patent Literature 1 discloses a lighting device that uses a light emitting diode as a light source and is rotatably attached to a ceiling or the like via a support portion. This lighting device is suitable for partially illuminating a desired region as described above because it uses a light-emitting diode to reduce the thickness and weight and reduce the amount of heat generated by light emission.

JP 2004-342392 A

  However, since the illumination device of Patent Document 1 is attached to a ceiling or the like, it is not suitable for freely illuminating a desk, a hand, a human face, or the like. Even if this lighting device is used without being mounted on the ceiling or the like, the power supply cable is fixed to the back of the flat fixture body, so that when the lighting device is placed on a desk, etc. The cable has to be routed, which causes a problem that the arrangement of the lighting device is limited by the power supply cable.

  The present invention has been made to solve such a conventional problem, and an object of the present invention is to provide a lighting device that is thin, easy to handle, and capable of improving the degree of freedom in arrangement.

Lighting apparatus according to the present invention comprises a housing plate shape, a light emitting body disposed in the housing, is connected to the emitters together is arranged at a site forming a part of a thickness of the housing each end of且Tsu power cable Two or more housing-side connectors to which the connector is connected, and by connecting the end connector to any housing-side connector, power is supplied from the external power source to the light emitter via the power cable. The plate-shaped first and second lighting devices , wherein the external power source is a first external power source that supplies power to the light emitter of the first lighting device and the light emitter of the second lighting device. A housing-side connector of the second lighting device via a connection cable to a housing-side connector other than the housing-side connector to which the end connector of the first lighting device is connected. Second lighting by connecting Power is supplied via the power cable and the connecting cable from the external power source to the emitters of the location, the power cable and the connecting cable is provided with the signal line from the first and second external power supply.

In addition, a flat plate shape having a size corresponding to the housing, and a support member composed of side members formed so as to face the portions constituting the plate thickness of the housing on both side ends of the flat plate shape, The casing and the side member are rotatably connected via a rotating member, and the end connector is prevented from rotating to the flat plate shape side by contacting the upper edge of the side member. it can be configured to. In this case, the housing-side connector may be configured to include a first housing-side connector and a second housing-side connector disposed at a position farther from the rotating member than the first housing-side connector. .
The light - emitting element may be an organic electroluminescence device.

  According to the present invention, two or more housing-side connectors are arranged in a portion constituting the plate thickness of the plate-shaped housing, and the end connector of the power cable is connected to the optional housing-side connector via the power cable. In addition, since power is supplied to the light emitter in the housing, it is not only thin and easy to handle, but also the degree of freedom in arrangement is improved.

Embodiments of the present invention will be described below with reference to the accompanying drawings.
Embodiment 1
FIG. 1 shows an internal configuration of lighting apparatus 1 according to the first embodiment. The illumination device 1 includes a surface light emitter 4 having six organic electroluminescence (hereinafter referred to as EL) elements 3 in a plate-shaped housing 2. In addition, as the housing-side connector, the first connector 5 is disposed at one of the two side ends of the housing 2, the second connector 6 is disposed at the other, and the third connector 7 is disposed at the lower end of the housing 2. Yes. These first connector 5, second connector 6 and third connector 7 are all two-pin connectors composed of first and second pins, and the first pin of each connector is used as a positive electrode pin. The positive electrode pins of these three connectors are connected to each other by the positive electrode line LA in the housing 2, and the positive electrode of each organic EL element 3 of the surface light emitter 4 is connected to the positive electrode line LA. The second pins of the first connector 5, the second connector 6, and the third connector 7 are respectively used as negative electrode pins, and these negative electrode pins are connected to each other by a negative electrode line LC in the housing 2 and are also negative electrodes. The negative electrode of each organic EL element 3 of the surface light emitter 4 is connected to the line LC.

As shown in FIG. 2, the first connector 5, the second connector 6, and the third connector 7 are arranged at portions constituting the plate thickness of the plate-shaped housing 2, respectively. By connecting the end connector 9 of the power cable 8 to each other, each organic EL element 3 of the surface light emitter 4 is connected to an external power source (not shown) via the power cable 8. Therefore, each organic EL element 3 can be illuminated by an external power source for illumination.
Here, since the first connector 5, the second connector 6, and the third connector 7 are connected in parallel to each other, even if the end connector 9 of the power cable 8 is connected to any of these connectors, the surface light emission is performed. Each organic EL element 3 of the body 4 is connected to an external power source, and power can be supplied to each organic EL element 3 from the external power source. That is, a connector to be used can be selected from the three connectors 5 to 7 according to the arrangement state of the lighting device 1, and the degree of freedom of arrangement of the lighting device 1 is improved.
For example, as shown in FIG. 2, the housing 2 can be supported by a stand 10, and the end connector 9 of the power cable 8 can be connected to the third connector 7 facing downward to use the lighting device 1. .

  In addition, as shown in FIG. 3, the lighting device 1 can be placed on a desk or the like by attaching a support plate 11 to the housing 2, and in this case, the lighting device 1 is disposed on the side end of the housing 2. The end connector 9 of the power cable 8 may be connected to the second connector 6 or the first connector 5. In addition, if the opening part which lets the edge part connector 9 of the power cable 8 pass is formed in the top plate of a desk, in the state which mounted the illuminating device 1 like FIG. It is also possible to connect the end connector 9 of the power cable 8 to the connector 7. In this way, the power cable 8 becomes inconspicuous.

  Further, as shown in FIG. 4, the end connector 9 of the power cable 8 is fixed to the desk 12 or the like so as to protrude outward, and the end connector 9 is illuminated as shown in FIG. The housing 2 can also be supported by connecting, for example, the third connector 7 of the device 1. With such a configuration, the stand 10 and the support plate 11 for supporting the housing 2 become unnecessary.

Embodiment 2
FIG. 6 shows a lighting device 21 according to the second embodiment. The illuminating device 21 includes a surface light emitter 4 having six organic EL elements 3 in a plate-shaped housing 22 as in the illuminating device 1 of the first embodiment. A first connector 23 and a second connector 24 are disposed at one side end portion of 22. Each of the first connector 23 and the second connector 24 is a connector having a two-pin configuration including a first pin and a second pin, and the first pin of each connector is connected to each other in the housing 22 by a positive line LA. In addition, the positive electrode of each organic EL element 3 of the surface light emitter 4 is connected to the positive electrode line LA. Further, the second pins of the first connector 23 and the second connector 24 are connected to each other by the negative electrode line LC in the housing 22 and the negative electrode of each organic EL element 3 of the surface light emitter 4 is connected to the negative electrode line LC. ing.
Therefore, even if the end connector 9 of the power cable 8 is connected to either the first connector 23 or the second connector 24, power can be supplied from the external power source to each organic EL element 3 to emit light.

A support member 26 is attached to the housing 22 via a pin 25 so as to be rotatable. The support member 26 has a flat plate shape having a size substantially corresponding to the housing 22 and has side members 27 formed at both ends thereof, and pins 25 are provided near the end portions of the side members 27. Is arranged.
As shown in FIG. 6, when the end connector 9 of the power cable 8 is connected to one of the first connector 23 and the second connector 24, the end connector 9 protrudes sideways from the housing 22. When the end connector 9 comes into contact with the upper edge of the side member 27 of the support member 26, the casing 22 is prevented from further rotating toward the support member 26, and the casing 22 is supported in this state. The

  Here, the first connector 23 is disposed at a position closer to the pin 25 than the second connector 24 at the side end of the housing 22, and the second connector 24 is disposed at a position far from the pin 25. For this reason, as shown in FIG. 6, when the end connector 9 of the power cable 8 is connected to the first connector 23, the housing 22 supported at the angle θ1 is shown in FIG. When the end connector 9 of the power cable 8 is connected to the second connector 24, the housing 22 is supported at an angle θ2 smaller than the angle θ1. In this way, by selecting the housing side connector that connects the end connector 9 of the power cable 8 from both the first connector 23 and the second connector 24, the support angle of the housing 22 can be adjusted and illuminated. It becomes possible.

Note that the number of housing-side connectors is not limited to two, and if the three or more housing-side connectors are arranged and selected at the side end of the housing 22, the support angle can be adjusted more finely. it can.
In addition, a plurality of housing side connectors may be provided at both end portions of the housing 22.

Embodiment 3
FIG. 8 shows an internal configuration of the illumination device 31 according to the third embodiment. The illuminating device 31 includes a surface light emitter 4 having six organic EL elements 3 in a plate-shaped housing 32 as in the illuminating device 1 of the first embodiment. The first connector 33 is disposed at one side end of the both side end portions of the 32, the second connector 34 is disposed at the other side end portion, and the third connector 35 is disposed at the lower end portion of the housing 32. Fourth connectors 36 are arranged side by side. The first connector 33, the second connector 34, the third connector 35, and the fourth connector 36 are all connectors having a three-pin configuration including first to third pins, and the first pin of each connector is a housing. The positive electrodes of the organic EL elements 3 of the surface light emitter 4 are connected to the positive electrode line LA. Further, the second pins of the first connector 33 to the fourth connector 36 are connected to each other by the negative electrode line LC in the housing 32, and the negative electrode of each organic EL element 3 of the surface light emitter 4 is connected to the negative electrode line LC. ing. Further, the third pins of the first connector 33 to the fourth connector 36 are used as contact pins for other lighting devices, respectively, and these contact pins are connected to each other in the housing 32 by a contact signal line LM. ing.

FIG. 9 shows a state in which the two lighting devices S1 and S2 having such a configuration are connected to an external power source. The first connector 33 of the first lighting device S1 is connected to the external power source 37 via the power cable 8, and the second lighting device S2 is connected to the second connector 34 of the first lighting device S1 via the connection cable 38. The first connector 33 is connected.
The external power source 37 has a current control circuit D1 corresponding to the first lighting device S1 and a current control circuit D2 corresponding to the second lighting device S2, and the current control circuits D1 and D2 are connected to AC / DC. A commercial power supply is connected via the converter 39. The external power supply 37 has a power supply connector 40 having a three-pin configuration. The positive terminal of the current control circuit D1 is connected to the first pin, the negative terminals of the current control circuits D1 and D2 are connected to the second pin, The positive terminal of the current control circuit D2 is connected to each of the 3 pins. The current control circuits D1 and D2 are connected to an adjustment switch 41 for turning on / off the illumination by the first illumination device S1 and the second illumination device S2 and adjusting the luminance.

The power supply cable 8 that connects the power supply connector 40 of the external power supply 37 and the first connector 33 of the first lighting device S1 is composed of three parallel signal lines L11 to L13, and power is supplied by these signal lines L11 to L13. The first to third pins of the partial connector 40 are connected to the first to third pins of the first connector 33 of the first lighting device S1, respectively.
On the other hand, the connection cable 38 that connects the second connector 34 of the first lighting device S1 and the first connector 33 of the second lighting device S2 also includes three signal lines L21 to L23. The second pin, which is the negative electrode pin of the second connector 34 of the first lighting device S1, and the second pin, which is the negative electrode pin of the first connector 33 of the second lighting device S2, are connected to each other by the signal line L22. . However, the remaining two signal lines L21 and L23 cross each other, and the first pin that is the positive electrode pin of the second connector 34 of the first lighting device S1 is connected to the second lighting device S2 by the signal line L21. The third pin, which is a contact pin of the second connector 34 of the first lighting device S1, is connected to the third pin, which is a contact pin of the first connector 33, by the signal line L23. The first connector 33 is connected to a first pin that is a positive electrode pin.

  By using the first lighting device S1 and the second lighting device S2 configured as described above, the power cable 8 and the connection cable 38, each organic EL element 3 of the surface light emitter 4 of the first lighting device S1. The positive electrode of the first illumination device S1 is connected to the positive electrode LA, the first pin of the first connector 33 of the first illumination device S1, the signal line L11 of the power cable 8, and the first pin of the power connector 40. Connected to the positive terminal of the current control circuit D1 of the external power source 37. On the other hand, the positive electrode of each organic EL element 3 of the surface light emitter 4 of the second illumination device S2 is the positive line LA of the second illumination device S2, the first pin of the first connector 33 of the second illumination device S2. The signal line L23 of the connection cable 38, the third pin of the second connector 34 of the first lighting device S1, the communication signal line LM of the first lighting device S1, and the first connector 33 of the first lighting device S1. The third pin, the signal line L13 of the power cable 8 and the third pin of the power connector 40 are connected to the positive terminal of the current control circuit D2 of the external power source 37.

  The negative electrode of each organic EL element 3 of the surface light emitter 4 of the first lighting device S1 and the negative electrode of each organic EL element 3 of the surface light emitter 4 of the second lighting device S2 are the first lighting device. The negative line LC of S1, the second pin of the second connector 34 of the first lighting device S1, the signal line L22 of the connection cable 38, the second pin of the first connector 33 of the second lighting device S2, and the second lighting. They are connected to each other via the negative line LC of the device S2, and further to the outside via the second pin of the first connector 33 of the first lighting device S1, the signal line L12 of the power cable 8, and the second pin of the power connector 40. The current control circuit D1 of the power source 37 and the current control circuit D2 are connected to the negative terminals.

  For this reason, from the current control circuit D1 of the external power source 37 to each organic EL element 3 of the surface light emitter 4 of the first lighting device S1, externally to each organic EL element 3 of the surface light emitter 4 of the second lighting device S2. A constant current can be independently supplied from the current control circuit D2 of the power source 37 to cause each of the organic EL elements 3 of the surface light emitters 4 to emit light. In general, since the organic EL element has a characteristic that its luminance and chromaticity are determined by a driving current, as described above, each organic EL element 3 of the surface light emitter 4 of the first illumination device S1. And each organic EL element 3 of the surface light emitter 4 of the second illuminating device S2 are driven by dedicated current control circuits D1 and D2, respectively, so that each organic EL of the surface light emitter 4 of both the illuminating devices S1 and S2 is driven. It is possible to make the luminance and chromaticity of the element 3 uniform. In addition, by operating the adjustment switch 41 of the external power source 37, ON / OFF control and brightness adjustment of each organic EL element 3 of the surface light emitters 4 of both the lighting devices S1 and S2 are performed.

As shown in FIG. 10, since the first lighting device S1 and the second lighting device S2 are connected in a daisy chain using the power cable 8 and the connection cable 38, the wiring of the cable is simplified.
Since the first lighting device S1 and the second lighting device S2 have a common configuration, it is not necessary to consider the order of arrangement of these lighting devices. That is, you may connect in order of the power cable 8, 2nd illuminating device S2, the connection cable 38, and 1st illuminating device S1.

Since each of the first lighting device S1 and the second lighting device S2 has four housing-side connectors, when the external power source 37 and the first lighting device S1 and the second lighting device S2 are connected, The housing side connector can also be selected. For example, the power cable 8 may be connected to the second connector 34 of the first lighting device S <b> 1 and the connection cable 38 may be connected to the first connector 33. Similarly, the connection cable 38 can be connected to the second connector 34 of the second lighting device S2.
The end connector 9 of the power cable 8 is connected to the third connector 35 of the first lighting device S1, and the fourth connector 36 of the first lighting device S1 and the third connector 35 of the second lighting device S2. A connection cable 38 may be connected between the two.
Thus, the freedom degree of arrangement | positioning of each illuminating device S1 and S2 improves. Further, when the arrangement of the lighting devices S1 and S2 is changed, the power cable 8 and the connection cable 38 are entangled by changing the housing side connector connected to the power cable 8 and the connection cable 38 as necessary. Can be avoided.

Similarly, three or more lighting devices can be connected to an external power source.
Moreover, although the illuminating device 31 which concerns on this Embodiment 3 was provided with four housing | casing side connectors, it is not restricted to this, You may have 3 or 5 or more housing | casing side connectors. .

  In Embodiments 1 to 3 described above, the lighting device using six organic EL elements 3 as the light emitter has been described. However, the number of organic EL elements 3 is not limited to six, and other than organic EL elements. In addition, a light emitting diode and other various light sources can be used.

It is a circuit diagram which shows the structure of the illuminating device which concerns on Embodiment 1 of this invention. It is a perspective view which shows the state which attached the illuminating device which concerns on Embodiment 1 to the stand. It is a perspective view which shows the state which mounted the illuminating device which concerns on Embodiment 1 on the desk. It is a perspective view which shows the state which connects the illuminating device which concerns on Embodiment 1 to the edge part connector fixed on the desk. It is a perspective view which shows the state which connected the illuminating device which concerns on Embodiment 1 to the edge part connector fixed on the desk. FIG. 6 is a perspective view showing a lighting device according to Embodiment 2. It is a perspective view which shows the state which changed the support angle of the illuminating device which concerns on Embodiment 2. FIG. FIG. 6 is a circuit diagram illustrating a configuration of a lighting device according to Embodiment 3. It is a circuit diagram which shows the state which connected the two illuminating devices which concern on Embodiment 3 and connected to the external power supply. It is a perspective view which shows the state which connected the two illuminating devices which concern on Embodiment 3. FIG.

Explanation of symbols

  1,2,31, S1, S2 Illumination device, 2,22,32 housing, 3 organic EL element, 4 surface light emitter, 5, 23, 33 first connector, 6, 24, 34 second connector, 7, 35 Third Connector, 8 Power Cable, 9 End Connector, 10 Stand, 11 Support Plate, 12 Desk, 25 Pin, 26 Support Member, 27 Side Member, 36 Third Connector, 37 External Power Supply, 38 Connection Cable, 39 AC / DC converter, 40 power supply connector, 41 adjustment switch, D1-Dn current control circuit, LA positive line, LC negative line, LM signal line, L11-L13, L21-L23 signal line.

Claims (4)

A plate- shaped housing;
A light emitter disposed in the housing;
Comprising two or more a housing-side connector end connector of the connected且Tsu power cable to the light emitting element is connected with is arranged in each of parts constituting the plate thickness of the housing,
The plate-shaped first and second lighting devices are characterized in that power is supplied from an external power source to the light emitter via the power cable by connecting the end connector to any housing-side connector. Because
The external power source includes a first external power source that supplies power to the light emitter of the first lighting device, and a second external power source that supplies power to the light emitter of the second lighting device. And
By connecting the housing-side connector of the second lighting device via a connection cable to the housing-side connector other than the housing-side connector to which the end connector of the first lighting device is connected, the second Power is supplied to the light emitter of the lighting device from the external power source via the power cable and the connection cable,
The power supply cable and the connection cable each include a signal line from the first and second external power supplies . A flat plate shape having a size corresponding to the housing;
A support member composed of a side member formed so as to be opposed to a portion constituting the plate thickness of the casing at both side ends of the flat plate shape,
The casing and the side member are rotatably connected via a rotating member,
The lighting device according to claim 1, wherein the end connector contacts the upper edge of the side member to prevent the casing from rotating to the flat plate shape side . The housing-side connector includes a first housing-side connector,
The lighting device according to claim 2, further comprising: a second housing-side connector disposed at a position farther from the rotating member than the first housing-side connector . The light emitter lighting device according to any one of claims 1 to 3 comprising an organic electroluminescent device.

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