JP2011049100A - Illumination system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination system for serving easily adding illumination having a large light quantity at a site having a commercial power source. <P>SOLUTION: In the illumination system 1, a casing 2 includes an illumination part 3, having a light source portion 4a in which a plurality of light-emitting diodes 4 are two-dimensionally arranged, for emitting the light thereof from an emission surface 7, and a drive part 6 for driving the light-emitting diodes 4, and a feeding blade 5 is provided thereon movably relative to the casing 2 and electrically connected insertably to the drive part 6 into the commercial power source. A light-diffusing member and an optical member, such as optical lens, can be provided on the light source portion 4a in the direction of the light irradiation. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

  The present invention relates to an illumination device using a light emitting diode.

  A night light using a light emitting diode integrated with a plug blade to be inserted into an outlet of a commercial power supply has been conventionally known, and is disclosed in, for example, Patent Document 1. Such a night light is also called a foot lamp or a night light, and illuminates with a brightness that allows the foot to be seen at night.

  You may want to add lighting temporarily or simply to a place where there is no lighting in the room. In such a case, the nightlight has a problem that it cannot be used as illumination with a large amount of light because of its low brightness.

  Also, even if it is free to carry, if the installation location varies widely, there is no lighting device that can be installed by eliminating the three-dimensional problems of installation depending on the installation location, and the direction of the illumination light In some cases, brightness, color, etc. cannot be easily adjusted. Recently, there is no portable and space-saving light-emitting diode illuminating device that has such an adjustment function, is easy to use and easy to use, and such a device is strongly desired by users.

JP 2002-373506 A

  The present invention has been made to solve the above-mentioned problems, and is highly movable so that it can be installed in various places where commercial power outlets exist, eliminating three-dimensional problems according to the space of the place. To provide an illuminating device that has an adjustment mechanism for obtaining the characteristics, is space-saving, has a large amount of light for its size, and can adjust the direction, brightness, color, etc. of illumination light with a simple operation. With the goal.

  The illuminating device according to claim 1, which has been made to achieve the above object, has a light source unit in which a plurality of light emitting diodes are arranged one-dimensionally or two-dimensionally, and the light is emitted from the emission surface side. A casing provided with an emitting illumination section and a driving section that drives the light emitting diode has a power supply blade that can be inserted into a commercial power outlet and is electrically connected to the driving section. And is provided so as to be movable or fixed.

  The illumination device according to a second aspect is the one described in the first aspect, wherein the illumination unit includes an optical member in a light irradiation direction of the light source unit.

  The illumination device according to a third aspect is the one according to the second aspect, wherein the optical member is any one of a light diffusion member, an optical lens, a color filter, and a translucent image display member that diffuses light. It is characterized by comprising one or a combination thereof.

  According to a fourth aspect of the present invention, there is provided the lighting device according to the third aspect, wherein the optical lens is supported by a moving mechanism capable of changing a distance from the light emitting diode.

  A lighting device according to a fifth aspect is the lighting device according to the second or third aspect, wherein the optical member is detachably provided on the lighting unit.

  A lighting device according to a sixth aspect is the lighting device according to any one of the first to fifth aspects, wherein the lighting unit emits light of the light emitting diodes arranged one-dimensionally or two-dimensionally on a side surface of the light guide plate. The light source unit is incident on the light guide plate and is emitted from one or both surfaces of the light guide plate.

  A lighting device according to a seventh aspect is the lighting device according to any one of the first to sixth aspects, wherein the plurality of light emitting diodes are configured by a combination of light emitting diodes having different emission colors. A color tone adjusting circuit for adjusting a current supplied from the driving unit is provided for each set of the light emitting diodes.

  The lighting device according to claim 8 is the lighting device according to any one of claims 1 to 6, wherein the driving unit is charged by a commercial power source supplied from the plug blade, and from the commercial power source. And / or a secondary battery or a capacitor for supplying power to the light emitting diode when the power switch is turned off.

  A lighting device according to a ninth aspect is the lighting device according to any one of the first to sixth aspects, wherein the driving unit includes a blinking circuit that intermittently drives the light emitting diode. Features.

  The illumination device according to claim 10 is the illumination device according to any one of claims 1 to 6, wherein the plug blade is provided movably with respect to the housing via a swing mechanism. It is characterized by being.

  According to the illumination device of the present invention, a large amount of light can be obtained by using an illumination unit that emits light from a light source unit in which a plurality of light-emitting diodes are arranged one-dimensionally or two-dimensionally from the emission surface side, and bright illumination is achieved. It can be used as a device. Further, since the light emitting diode is small, it can be a thin lighting device having a thickness of preferably 2 cm or less, more preferably 1.2 cm or less, and can be easily transported. In particular, an edge light type illumination device using light-emitting diodes one-dimensionally or two-dimensionally arranged around a light guide plate at the center as a light source part is preferably a thin part with an illumination part thickness of preferably 1 cm or less, more preferably 5 mm or less. Can be.

  If the size of the plane of the illumination unit is A5 size notebook size or business card size in particular, it is portable and can be put in a bag or pocket, so it can be carried to a necessary place and useful. The lighting unit and a driving unit for supplying power to the light emitting diode are housed in a housing, and a power supply blade that can be inserted into a commercial power outlet is movably or fixed to the housing. Therefore, it is possible to easily add bright illumination simply by plugging into an outlet.

  Moreover, according to the illuminating device of this invention, the function can be utilized by providing a desired optical member in the light irradiation direction of a light source part as needed. When the optical member is a light diffusing member that diffuses light, it can be soft illumination light and the light irradiation range can be widened, and multiple members with different diffusion grades can be used, or light with different light diffusing ranges can be used. The quality of light can be changed by using a diffusing member. The light diffusing member can have a color filter function by mixing a coloring dye or pigment. If the optical member is an optical lens, it can be changed to a different lens, or supported by a moving mechanism that can change the distance from the light-emitting diode, thereby changing the focal length to make a bright spot, and setting the directivity angle. The illumination range can be adjusted by changing. Further, by making the lens detachable, the focal length and the directivity angle can be changed in a wider range by exchanging the lens.

  In addition, when the optical member is a translucent image display member displayed as an image on a translucent substrate, for example, a symbol image such as a guide character or an arrow, a photographic image, a pictogram (pictogram) on the translucent substrate. By displaying an image, it can be used as a guidance display board, or can be used as an advertisement, a sign, or the like. It can also be used as a picture frame for displaying pictures by back lighting. Since the display can be brightened, it is possible to provide a guidance display board having excellent visibility even in the daytime. Furthermore, it can also be set as the image display member combined with the light-diffusion member. In this case, the image display can be easily exchanged together with the light diffusing member.

  In addition, according to the illumination device of the present invention, the optical member is detachably provided on the illumination unit, so that the range of functions can be expanded by aligning optical members of different types and multiple grades, and desired functions can be obtained. Can be exchanged and combined.

  In addition, according to the lighting device of the present invention, the plurality of light emitting diodes are configured by a combination of light emitting diodes having different emission colors, and the color tone adjustment for adjusting the current supplied from the driving unit for each set of light emitting diodes of the same color By providing the circuit, the color and brightness of the illumination light can be arbitrarily adjusted.

  In addition, according to the illumination device of the present invention, the drive unit has a secondary battery or a capacitor, so that it can be used as an illumination even in the event of a power failure or when it is portable because it is portable. Can be used.

  Moreover, according to the illuminating device of this invention, the drive part has a blinking circuit which drives a light emitting diode intermittently, Therefore It can be used also as a warning lamp for calling attention.

  Furthermore, according to the illumination device of the present invention, the direction in which the illumination is performed can be arbitrarily changed by providing the plug blade movably on the housing via the drawer mechanism, the hinge mechanism, or the swing mechanism. it can. Further, when the plug blade is movable so as to be housed in the housing, when the lighting device is not used, the plug blade does not protrude from the housing, so that the plug blade does not get in the way and the entire lighting device becomes small. Therefore, it can be made excellent in portability.

It is the perspective view (a) which shows an example of the illuminating device to which this invention is applied, and a partially expanded sectional view (b) which shows the plug blade part. It is sectional drawing which shows another example of the illuminating device to which this invention is applied. It is a block diagram which shows another example of the illuminating device to which this invention is applied. It is the perspective views (a) and (b) which show another example of the illuminating device to which this invention is applied. It is a top view which shows the use condition of another example of the illuminating device to which this invention is applied. It is the perspective view (a) which shows another example of the illuminating device to which this invention is applied, and the plug blade part perspective view (b) at the time of non-use. It is the perspective view (a) which shows another example of the illuminating device to which this invention is applied, and the side view (b) which shows the use condition. It is the perspective view (a) which shows another example of the illuminating device to which this invention is applied, and the perspective view (b) which shows the use condition. It is the front view (a) which shows another example of the illuminating device to which this invention is applied, and its partially expanded sectional view (b). It is a partially broken front view which shows another example of the illuminating device to which this invention is applied. It is a partially expanded perspective view which shows another example of the light source part to which this invention is applied. It is a partially expanded perspective view which shows another example of the light source part to which this invention is applied.

  Although the preferable form of implementation of this invention is described in detail below, the scope of the present invention is not limited to these forms.

  One embodiment of the lighting device of the present invention will be described with reference to FIG. In the illumination device 1, a light source unit 4a in which a plurality of light emitting diodes 4 are two-dimensionally exposed is exposed, and an illumination unit that emits light from the light source unit 4a from the emission surface 7 side (the front side of the housing 2). 3 and a drive unit 6 that drives the light-emitting diode 4 are provided with a power supply blade 5 that can be plugged into a commercial power outlet (not shown) and is electrically connected to the drive unit 6. It is provided so as to be movable with respect to the housing 2 by a hinge mechanism via a base 5 b of the blade 5.

  The housing 2 is molded in a substantially box shape by a synthetic resin such as plastic as an example.

As shown in FIG. 2A, the light emitting diodes 4 are provided in a two-dimensional arrangement on one plane of the housing 2 as an example in five columns and seven rows. It is configured by a (planar) light source unit 4a. The two-dimensional arrangement is a concept indicating that the light-emitting diodes 4 are arranged in the plane, and is not only arranged in an orderly manner in the vertical and horizontal directions, but also arranged in a concentric circle, It is a concept that includes arranging in a mold, randomly arranging, and the like. The light emitting diode 4 may be arranged one-dimensionally.
The one-dimensional arrangement of the light emitting diodes means that the light emitting diodes are arranged in a row, and includes not only a straight line but also a curved shape such as a circle or a bow. The surface on which the light-emitting diodes 4 are arranged one-dimensionally or two-dimensionally is not limited to a simple plane, but also includes curved surfaces such as a dome shape, a convex surface or a concave surface, and a spherical surface.

  In the figure, an example in which the light emitting diode 4 is arranged so as to protrude to the front (observation surface side) side of the housing 2 is shown, but the front surface of the housing 2 has substantially the same diameter as the light emitting diode 4. A plurality of holes may be formed, and the tops of the light emitting diodes 4 may be partially protruded, flushed, or retracted from the holes. Further, the light emitting diode 4 may be molded integrally with the resin of the housing 2. Furthermore, as shown in the figure, a light reflecting plate 8 can be attached to the exit surface 7 on the front side of the housing 2 to provide the function of the reflecting plate, for example. If necessary, a transparent protective plate that protects the light emitting diode 4 may be disposed so as to cover the entire illumination unit 3.

  The emission color of the light emitting diode 4 is appropriately selected according to the desired illumination color. When a white illumination is desired, a white light emitting diode is used. When a colored illumination is desired, a light emitting diode having a desired color is used. In recent years, many white light-emitting diodes with high luminance are commercially available, and the emission color can be appropriately changed by covering the high-luminance white light-emitting diode with a colored cap. Further, light may be mixed by arranging light emitting diodes that emit light of different wavelengths among the plurality of light emitting diodes.

  The drive unit 6 is configured by an electric circuit that rectifies and smoothes commercial AC 100 V supplied from the plug blade 5 and supplies a predetermined current to the light emitting diode 4. As this electric circuit, a known circuit can be used.

  The plug blade 5 is provided on the upper surface of the back surface of the housing 2 (the non-observation surface side in FIG. 1A) so as to be movable with respect to the housing 2 via a pedestal 5b. That is, the plug blade 5 provided integrally with the housing 2 is provided so that the angle with respect to the housing 2 can be variably adjusted.

  The plug blade 5 may be configured to be accommodated inside the back surface of the housing 2 by rotating 90 degrees around the pedestal 5b as an axis, as indicated by a two-dot chain line arrow in FIG. FIG. 1B is a partial cross-sectional view thereof. The plug blade 5 is fixed by a pedestal 5b that supports the plug blade 5, and is housed in a recessed manner provided in the casing together with the pedestal 5b. When this configuration is adopted, it is preferable that the plug blade 5 does not get in the way when the lighting device 1 is stored or transported. Further, when the configuration is such that the plug blade 5 is not accommodated, the portability is suppressed, but the casing 2 can be made thinner so that the storage space for the plug blade is not provided, and the illumination unit 3 can be placed on a wall or the like. The shape is exactly the same, and the advantage of less steric hindrance is improved.

  The lighting device 1 is used and operates as follows.

  First, the plug blade 5 is raised and protruded from the housing 2 as shown in FIG. When the plug blade 5 is inserted into an outlet, power is supplied from the plug blade 5 to the drive unit 6. As a result, the drive unit 6 immediately drives the light emitting diode 4, the light emitting diode 4 emits light, and light is emitted from the illumination unit 3.

  Since the light emitting diode 4 is two-dimensionally arranged, the illumination unit 3 is a two-dimensional (planar) light source unit 4a.

  Next, another aspect of the lighting device of the present invention will be described with reference to FIG. In the following, the same components as those already described are denoted by the same reference numerals and description thereof is omitted.

  The illuminating device 1a shown in the figure has a light diffusing member 10 in which the illuminating unit 3a diffuses light, which is an example of the optical member of the present invention, on the light irradiation direction side of the light emitting diode 4 (light source unit 4a). It is equipped with. The surface on which this optical member is provided corresponds to the exit surface.

  Specifically, in the illuminating device 1a, the illuminating unit 3a includes a light source unit 4a including a substrate 11 on which a plurality of light emitting diodes 4 are two-dimensionally mounted, and a light diffusing member 10. . The substrate 11 is disposed at a position one step down from the upper surface (upper part of the figure) of the housing 2 so that the light irradiation direction of the light emitting diode 4 faces upward in the figure. In addition, the substrate 11 is provided with a reflective layer in which a light reflecting film 12 that reflects light is attached to the surface on which the light emitting diode 4 is mounted. Further, a light reflecting film 13 is attached to the housing 2 on the inner wall from the substrate 11 to the light diffusing member 10. Here, instead of the light reflecting film, a reflecting layer such as a light reflecting paint or metal plating may be provided. Further, the substrate 11 itself may be white and also serve as a reflective layer.

  The light diffusing member 10 is formed in a plate shape and is detachably attached to the edge of the housing 2 by being inserted into a slit 19 provided on the inner wall on the upper surface side of the housing 2. The light diffusing member 10 is formed by adding or applying a light scattering agent such as titanium oxide or calcium carbonate to a light-transmitting base material of a synthetic resin such as glass, silicone resin, or acrylic resin. Is.

  Further, in the lighting device 1a, a drive circuit board 14 mounted with components, which constitutes the drive unit 6a, is disposed inside the housing 2. In addition to the rectifying / smoothing circuit 15 of the commercial AC power supply, the drive circuit board 14 is mounted with a light amount adjustment circuit 18 including a power switch 16 and a rotation-adjustable variable resistor 17.

  Examples of the power switch 16 include a slide switch, a seesaw switch, a push switch, and the like, and are provided so that power supply to the light emitting diode 4 can be turned on / off. The light amount adjustment circuit 18 is a circuit that varies the current supplied to the light emitting diode 4 within a range from zero (zero) to a preset maximum value by adjusting the variable resistor 17, and a known circuit can be used. . The power switch 16 and the variable resistor 17 are provided so that their respective operation knobs can be operated on the outer side wall of the housing 2. The drive blade 14 is electrically connected to the driving circuit board 14 and the board 11 is electrically connected. In the same manner as the lighting device 1, the plug blade 5 is movably provided so as to fall on the housing 2 so as to be housed on the back side (lower side in the figure) of the housing 2.

  Next, operation | movement of this illuminating device 1a is demonstrated.

  The plug 6 is inserted into an outlet and the power switch 16 is turned on, whereby the drive unit 6a starts driving the light emitting diode 4. Thereby, light is irradiated from the light emitting diode 4, light is diffused by the light diffusing member 10 in the irradiation direction, and is emitted from the illumination device 1a to the outside. Due to the diffusion of light by the light diffusion member 10, the lighting device 1a can irradiate light over a wide range.

  Moreover, since the light of the light emitting diode 4 is reflected by the light reflecting film 12 on the substrate 11 and the light reflecting film 13 on the inner wall of the housing 2, a brighter illumination device can be obtained.

  The light irradiation range can be changed by replacing the light diffusing member 10 with a wide or narrow one that diffuses light. Further, by using an optical member in which a diffusing lens is provided only on a member on the optical axis of the light emitting diode 4 as the light diffusing member, it is possible to diffuse light emitted from a large portion of the light flux of the light emitting diode.

  Further, by operating the variable resistor 17, the amount of light emitted by the light emitting diode 4 is varied. Thereby, it can adjust to the desired arbitrary brightness.

  Next, still another aspect of the illumination device of the present invention will be described with reference to FIG.

  The illuminating device 1b shown in the figure is formed by combining a plurality of light emitting diodes 4 of the illuminating device 1a already described with a combination of light emitting diodes 4R, 4G, and 4B having different emission colors. Color tone adjustment circuits 18R, 18G, and 18B that adjust the amount of current supplied from the drive unit 6b for each set are provided. Its outer shape is almost the same as that of the lighting device 1a already described. The lighting device 1b is obtained by adding a charging circuit 22, a secondary battery 23, and a blinking circuit 24 to the lighting device 1a.

  Specifically, the illumination unit 3b of the illumination device 1b includes a light source unit 4a on which a plurality of red light emitting diodes 4R, a plurality of green light emitting diodes 4G, and a plurality of blue light emitting diodes 4B are mounted on a substrate. A light diffusing member 10 is provided in the irradiation directions of 4R, 4G, and 4B. The plurality of light emitting diodes 4R, 4G, and 4B are two-dimensionally arranged with their positions dispersed so as to be mixed with each color. A white light emitting diode may be used with a red, green or blue colored cap.

  The driving unit 6b of the lighting device 1b includes a rectifying / smoothing circuit 15, a charging circuit 22, a secondary battery 23, a power switch 16, a blinking circuit 24, a blinking switch 25, a red adjustment circuit 18R, a green adjustment circuit 18G, and a blue adjustment circuit. 18B is provided. A rectifying / smoothing circuit 15 is connected to the plug blade 5 provided in the housing 2, and its output is connected to the charging circuit 22. A secondary battery 23 is connected to the charging circuit 22. When the power is supplied to the blade 5, that is, when power is supplied from the rectifying and smoothing circuit 15, the charging circuit 22 supplies power to the subsequent stage while charging the secondary battery 23 with the power, and the blade 5 This is a circuit for supplying power from the secondary battery 23 to the subsequent stage when the power supply is stopped.

  Examples of the secondary battery 23 include a nickel cadmium secondary battery, a lithium ion secondary battery, and a nickel hydride secondary battery. Note that a large capacity capacitor such as an electric double layer capacitor may be used instead of the secondary battery 23.

  A blinking circuit 24 is connected to the output of the charging circuit 22. The blinking circuit 24 is a switch circuit that repeatedly turns on and off intermittently at a predetermined time interval such as a one-second cycle when the blinking switch 25 is on. When the blinking switch 25 is off, the blinking circuit 24 remains on and the light emitting diodes illuminate continuously. The blinking switch 25 is provided such that its operation knob part can be operated on the outer side wall of the housing 2. If desired, an independent circuit may be provided to individually change the blinking time of the light emitting diodes 4R, 4G, and 4B.

  A red adjustment circuit 18R, a green adjustment circuit 18G, and a blue adjustment circuit 18B are connected in parallel to the output of the blinking circuit 24. These correspond to the color tone adjustment circuit of the present invention, and are the same circuits as the light amount adjustment circuit 18 of the illumination device 1a already described. The red adjustment circuit 18R, the green adjustment circuit 18G, and the blue adjustment circuit 18B are connected to variable resistors 17R, 17G, and 17B for adjusting currents output from the respective circuits. The red light emitting diode 4R connected in series is connected to the output of the red adjustment circuit 18R, the green light emitting diode 4G connected in series is connected to the output of the green adjustment circuit 18G, and the output of the blue adjustment circuit 18B is connected to the output of the blue adjustment circuit 18B. The blue light emitting diodes 4B connected in series are connected.

  Next, operation | movement of this illuminating device 1b is demonstrated.

  When the power switch 16 is turned on, power is supplied from the plug blade 5, a DC voltage is output from the rectifying and smoothing circuit 15, and the charging circuit 22 starts charging the secondary battery 23. When the blinking switch 25 is off, the blinking circuit 24 remains on, and the output of the charging circuit 22 is supplied as it is to the red adjustment circuit 18R, the green adjustment circuit 18G, and the blue adjustment circuit 18B.

  At this time, currents corresponding to the adjustment positions of the variable resistors 17R, 17G, and 17B are supplied to the light emitting diodes 4R, 4G, and 4B. Since the light emitted from the light emitting diodes 4R, 4G, and 4B is the three primary colors of light, red, green, and blue, when mixed by the light diffusing member 10, the light has a color corresponding to the intensity of each color. For this reason, it is possible to irradiate an arbitrary color from the lighting device 1b by adjusting the variable resistors 17R, 17G, and 17B. Moreover, bright white light can be irradiated from the illuminating device 1b by adjusting the variable resistors 17R, 17G, and 17B near the maximum position. Further, the brightness can be adjusted to an arbitrary brightness by adjusting the variable resistors 17R, 17G, and 17B.

  When the blinking switch 25 is turned on, the blinking circuit 24 is intermittently operated, and the light emitting diodes 4R, 4G, and 4B are intermittently driven in synchronism, and the light blinks and is irradiated.

  In the event of a power failure, since power is supplied from the secondary battery 23, the illumination from the lighting device 1b is continued. Moreover, since it has the secondary battery 23, even if it carries in the place without an outlet socket, light can be irradiated from the illuminating device 1b.

  In addition, a light receiving sensor is provided on the surface of the housing 2 at a position where the light of the illumination unit 3b is not exposed, and a mechanism for automatically turning on when a power failure or an environment becomes darker than the setting of the light receiving sensor is provided. It can also be an emergency light or a nightlight.

  Note that the timer switch 27 indicated by a broken line in the figure turns on the conduction between the charging circuit 22 and the flashing circuit 24 only for a predetermined time such as 30 seconds after the power switch 16 is turned off, and immediately thereafter. It is a circuit that turns off. By additionally providing the timer switch 27, it is possible to continue the light irradiation from the lighting device 1b for a predetermined time after the power switch 16 is turned off. In addition, by providing the timer switch 27, power may be supplied from the secondary battery 23 only for a predetermined time after a power failure, and light irradiation from the lighting device 1b may be continued only during this time. The timer switch 27 may be operated only when the power switch 16 is turned off, may be operated only during a power failure, or may be operated for a certain period from when the environment becomes dark when a light receiving sensor is provided. Alternatively, these may be operated in combination, or all of them may be operated.

  Next, still another aspect of the lighting device of the present invention will be described with reference to FIG.

  The illuminating device 1c shown by the figure has the illumination part 3c provided with the optical lens 31 which is an example of an optical member. The optical lens 31 is provided in the light irradiation direction of the light emitting diode 4. The optical lens 31 is supported by a moving mechanism 30 that can change the distance from the light emitting diode 4.

  Specifically, the housing 2 is formed in a cylindrical shape, and as shown in the figure, a plug blade 5 is provided on the bottom surface, and a drive unit 6 is provided in the bottom surface portion. On the driving unit 6 in the housing 2, the light emitting diodes 4 are two-dimensionally arranged concentrically with the light irradiation direction facing the upper side of the figure to form a planar light source. An optical lens 31 is supported by the moving mechanism 30 on the upper part of the cylinder or the columnar surface of the housing 2.

  The moving mechanism 30 slides up and down (FIG. 4 (a)) or rotates a rotatable ring (FIG. 4 (b)), as shown by a two-dot chain line in the figure. The lens 31 is moved up and down. For example, as shown in FIG. 4B, a male screw that spirals around the outer wall of the housing 2 is formed, a female screw that fits the male screw is formed in the moving mechanism 30, and the moving mechanism 30 is rotated. Thus, the position can be configured to move. Another known moving mechanism can also be used.

  The optical lens 31 can be composed of various lenses such as a convex lens, a concave lens, and a Fresnel lens, or a combination of these lenses. Note that the light diffusion member 10 may be disposed between the light emitting diode 4 and the optical lens 31. Furthermore, a diaphragm mechanism that can change the size of the diameter of light transmission can be provided between the color filter or the light emitting diode 4 and the optical lens 31. The lighting device 1c shown in FIG. 4A is cylindrical and is convenient to hold with a hand. However, the lighting device 1c in FIG. 4B, which has a circular shape and a cylindrical columnar shape with a reduced disk height, can harmonize with the wall to be installed without jumping out from the plane of the wall. it can.

  Next, operation | movement of the illuminating device 1c is demonstrated.

  By inserting the plug blade 5 into an outlet, the light emitting diode 4 becomes a planar light source and emits light. When this light passes through the optical lens 31, the light path changes. By sliding or rotating the moving mechanism 30, the position at which the optical lens 31 forms an image changes, so that the light irradiation range can be widened or narrowed.

  Next, still another aspect of the lighting device of the present invention will be described with reference to FIG.

  In the illuminating device 1d shown in the figure, the illuminating unit 3d has a translucent image display member 33 image-displayed on a translucent substrate, which is an example of an optical member, in the light irradiation direction of the light emitting diode 4. It is what it has.

  Specifically, the illuminating unit 3d is configured such that a translucent image display member 33 is detachably disposed on the front surfaces of the illuminating units 3 and 3a of the illuminating devices 1 and 1a described above. For example, as in the lighting device 1 a, a slit may be provided on the edge of the housing 2 and the image display member 33 may be inserted into the slit so that the image display member 33 can be attached or detached. It is good also as detachable by doing.

  As an example, the translucent image display member 33 is made of a translucent base material such as silicone resin, plastic resin, acrylic resin, etc., with the letters “exit” and the arrow symbol being white and the background is colored green. Is. This coloring is performed so that light is scattered and transmitted. Thereby, the translucent image display member 33 displays the image on the front surface side by being illuminated with light from the back surface.

  A light scattering agent may be added to the translucent image display member 33. The translucent image display member 33 may be provided by laminating a semi-transparent film or the like on the light diffusion member.

  In the figure, the light-emitting diodes 4 are shown only on both sides of the illumination unit 3d, and the central part is not shown, but in actuality, like the illumination devices 1 and 1a, they are two-dimensionally arranged. Yes.

  As shown in the figure, the image to be displayed may be a letter or a symbol, a pictogram such as an emergency exit, cell phone prohibition, or smoking prohibition, or imitating a painting or stained glass. It may be an image or a POS (Point of Sales) display.

  Next, the operation of the lighting device 1d will be described.

  For example, the lighting device 1 d is used by inserting the plug blade 5 provided on the back side of the housing 2 into an outlet 51 provided on the wall surface 50. Since the light emitting diodes 4 are two-dimensionally arranged, bright display can be achieved.

  In the figure, an example in which the plug blade 5 is inserted on the upper side of the two outlets 51 is shown. However, when the upper outlet is not usable due to the arrangement or the like, the upper side is turned upside down. Plug the blade 5 into the outlet. In this case, since the display is reversed, a rotation mechanism is provided between the blade 5 and the housing 2 for adjustment, or the image display member 33 is removed and the lighting device 1d is placed in the correct orientation. Install.

  Further, since the image display member 33 is detachable, the display image can be easily exchanged for another one.

  Next, still another aspect of the lighting device of the present invention will be described with reference to FIG.

  As an example, the lighting device 1e shown in FIG. 6 (a) is configured such that the plug blade 5 is movably provided on the side surface of the housing 2 similar to the lighting device 1a via the swing mechanism 35. . FIG. 6B is a partial view of the swing mechanism 35 when the plug blade is housed.

  The head swing mechanism 35 is composed of a biaxial joint mechanism, and as shown by two two-dot chain lines in the figure, the positional relationship between the blade 5 and the housing 2 is set to an arbitrary angle with two degrees of freedom. It is adjustable.

  As an example, the lighting device 1f illustrated in FIG. 7A includes a pedestal 5b on the plug blade 5, and a side surface (in the drawing) of the casing 2 via the swing mechanism 36 between the pedestal 5b and the casing 2. A plug blade 5 is movably provided on the back surface near the top surface.

  The head swing mechanism 36 is a uniaxial rotary joint, and can adjust the housing 2 to an arbitrary angle with the plug blade 5 as a central axis, as shown by a two-dot chain line in FIG.

  The number of joints (the number of degrees of freedom) of the swing mechanisms 35 and 36 is not limited, and a multi-joint mechanism having three or more axes may be used. Further, spherical indirect having three degrees of freedom of rotation may be used. Furthermore, a rectilinear joint that can freely advance and retract may be used.

  The illumination device 1f is used at a desired angle as shown in FIG.

  As shown in FIG. 8A, the lighting device 1g in FIG. 8 divides a housing portion 2a serving as an illumination portion and a housing portion 2b that houses an electric circuit such as a driving portion into separate bodies. The partitioned casings 2a and 2b are integrally connected via a bendable movable mechanism 37.

  The blade 5 is fixed to a pedestal 5c having a uniaxial swing mechanism shown in the figure, and is housed by sliding a slide knob 38 together with the pedestal 5c in a recess 39 provided on the side surface of the housing 2b. . During use, the plug blade 5 is pulled out of the housing 2b by the slide knob 38, and the plug blade 5 and the housing 2b incorporating the electric circuit are twisted and movable as shown in FIG. The illuminating device 1g shown in the figure becomes a swing mechanism with two degrees of freedom, and the illumination direction can be freely selected.

  6 and 8, when the plug blade 5 is provided on the side surface of the housing 2 through the swing mechanism, or the plug blade 5 is arranged directly on the side surface of the housing 2 without using the swing mechanism. In such a case, not only the illumination unit 3a is provided on the one surface side of the housing 2 as in the illumination device 1e, but the illumination unit 3a can also be provided on the back side by arranging the light emitting diodes 4 two-dimensionally. . That is, by providing the illumination units 3a (exit surfaces) on both opposing surfaces of the housing 2, bright light can be irradiated both on the front side and the back side.

  The lighting device according to the present invention is preferably as thin as possible in terms of light quantity and space efficiency. The illuminating device 1h of FIG. 9 employs an edge light system using a light guide plate 40 in the light source unit 4h in order to reduce the thickness of the illuminating unit 3h. FIG. 4A is a plan view of the lighting device 1h. The light source unit 4 h is configured by mounting the surface-mounted light-emitting diodes 4 on the substrate 11 on each of the inner side surfaces of the rectangular box-shaped casing 2 and arranging the light-emitting plates 4 in a single row (one-dimensional arrangement). It is constructed so as to be surrounded by 40. FIG. 4B is a partial side sectional view of the lighting device 1h. In the light source unit 4 h, the light of the light emitting diode 4 emitted from the inner surface side of the housing 2 toward the inside of the housing 2 is incident from the side surface of the light guide plate 40 and reflected by the light reflecting layer 20 at the bottom of the housing 2. Thus, the light source is a planar light source that emits light to the opposite side (upper side in FIG. 5B). The illumination unit 3h includes a light diffusing plate 10 on the light source unit 4h.

  In FIG. 2B, a light-reflecting layer 20 plated with metal is provided under the light guide plate 40, and the surface of the light guide plate 40 is provided with unevenness for increasing the light emission efficiency from the light guide plate 40. It has been.

  The illuminating device 1i shown by FIG. 10 forms the illuminating device 1h in disk shape. In the lighting device 1i, the light emitting diodes 4 are arranged in a circle on the inner side surface of the circular tray-shaped housing 2, and the light guide plate 40 is installed in the circle to form the light source unit 3h. Has been. The light emitting diode 4 emits light toward the center, so that the light guide plate 40 becomes a two-dimensional (planar) light source. Although not shown in the figure, when there is no bottom portion of the housing 2, the light guide plate 40 can be made to emit light on both sides (two sides) without providing the reflection layer 20.

  Moreover, in the illuminating device 1i, the example by which the Fresnel lens 31a which is an example of an optical lens as an optical member is distribute | arranged to the illumination part 3h is shown.

  As the light guide plate used in the present invention, various transparent plate materials such as transparent plastic resins such as acrylic resin, polycarbonate resin, and silicone resin, and glass can be used as materials. Further, for example, a dot-type light guide plate in which dots reflecting light on one side of an acrylic plate are printed with white ink can be used, and various known light guide plates can be used.

  Although the light emitting diode 4 is illustrated and described with a cylindrical shape, the light emitting diodes 4, 4R, 4G, and 4B may have a shell shape or a rectangular parallelepiped shape. Is not limited. Further, the light emitting diodes 4, 4R, 4G, and 4B may have a shape with a lead terminal penetrating the substrate 11 as shown in FIG.

  Further, the light-emitting diodes 4, 4 </ b> R, 4 </ b> G, and 4 </ b> B can be directly covered with a cap formed of a translucent substrate such as silicone or plastic resin to which a light scattering agent is added. Further, an optical lens for diffusing light or an optical lens for converging can be directly attached to each of the light emitting diodes 4, 4R, 4G, and 4B.

  Moreover, although the front shape of the illuminating devices 1 to 1h is illustrated as a rectangle or a circle, the shape is not limited to this, and can be formed in any shape such as a square, a star, a trapezoid, an ellipse, a triangle, and a polygon. Moreover, the size can be formed in any size such as a business card size, a postcard size, A1 size to A6 size, B1 size to B6 size.

  Further, the thickness of the lighting device can be designed to be within 2 cm, preferably within 1.2 cm. In particular, an edge light type lighting unit using a light guide plate in the lighting unit is 1 cm or less, more preferably 5 mm or less. Can be designed. As the overall size, a desired size can be selected and used depending on the application, but it is preferably A4 or less from the viewpoint of ease of use and ease of use, and more preferably a business card size can be put in a pocket or a bag. It is.

  In addition, as a light-emitting diode, a light-emitting diode is formed by adding or applying a fluorescent agent that emits light when excited by light irradiation of a light-emitting diode to a light-transmitting substrate such as silicone resin or glass. It is also possible to configure the illumination unit by arranging it in the light irradiation direction 4.

  Furthermore, as shown in FIG. 11, the use of a semiconductor chip 9 cut out from a semiconductor wafer as the light source unit 4 j in which the light emitting diodes (which may include R, G, and B) are two-dimensionally arranged makes it thinner. Even if it is small, it can be set as the illuminating device with comparatively large light quantity. As an example, as shown in the figure, linear wiring patterns 41 and wiring patterns 42 are alternately formed on the surface of the substrate 11a on which the light emitting diodes are to be arranged. The cathode electrode is connected to the wiring pattern 41 with a conductive agent. The anode electrode of the semiconductor chip 9 is connected in parallel to each of the two wiring patterns 42 along both sides of the wiring pattern 41 by two bonding wires 44 in total. By being connected by the two bonding wires 44 in this way, even if one is broken, the electrical connection can be maintained.

  The wiring pattern 41 is divided at various places, and the divided portions are connected by bonding wires 43 having a sufficient length. By doing in this way, even if the wiring pattern 41 expands and contracts due to heat or the like, the expansion and contraction is absorbed by the bonding wire 43, so that the bonding wire 44 connected to the light emitting diode 4 is prevented from being subjected to expansion and contraction load. Breakage of the wire 44 can be prevented.

  Further, as shown in FIG. 12, the semiconductor chips 9 can be two-dimensionally arranged concentrically. In the example shown in the figure, the anode electrode of the semiconductor chip 9 is connected to the wiring pattern 42 by a single bonding wire 44.

  By sealing the entire surface of the semiconductor chip 9 that is two-dimensionally arranged with a translucent resin such as silicone so that the wiring pattern does not oxidize and deteriorate, it is equal to or higher than that in which the individual light-emitting diodes are two-dimensionally arranged. A light source unit in which light emitting diodes can be arranged at a high density can be obtained, and a small illuminating device having a thin illuminating unit as a whole but having a large amount of light can be obtained.

  The illumination device of the present invention can easily provide bright illumination at a place where there is an outlet.

  1, 1a, 1b, 1c, 1d, 1e, 1f, 1g, 1h, 1i are illumination devices, 2, 2a, 2b are housings, 3, 3a, 3b, 3c, 3d, 3h are illumination units, and 4 is light emitting. Diodes 4a, 4h and 4j are light source units, 4R is a red light emitting diode, 4G is a green light emitting diode, 4B is a blue light emitting diode, 5 is a plug blade, 5b and 5c are pedestals, 6, 6a and 6b are drive units, 7 Is a light reflecting plate, 9 is a light emitting diode semiconductor chip, 10 is a light diffusing member, 11 and 11a are substrates, 12 and 13 are light reflecting films, 14 is a drive circuit board, 15 is a rectifying and smoothing circuit, 16 is a power switch, 17 is a variable resistor, 18 is a light amount adjustment circuit, 18R is a red adjustment circuit, 18G is a green adjustment circuit, 18B is a blue adjustment circuit, 19 is a slit, 20 is a light reflection layer, 22 is a charging circuit, 23 Is a secondary battery, 24 is , A blinking switch, 27 a timer switch, 30 a moving mechanism, 31 an optical lens, 31 a a Fresnel lens, 33 a translucent image display member, 35 and 36 a swing mechanism, and 37 a movable mechanism , 38 are slide knobs, 39 is a recess, 40 is a light guide plate, 41 and 42 are wiring patterns, 43 and 44 are bonding wires, 50 is a wall surface, and 51 is an outlet.

Claims (10)

  A housing having a light source unit in which a plurality of light emitting diodes are arranged one-dimensionally or two-dimensionally and emitting the light from the emission surface side, and a drive unit for driving the light-emitting diodes, A lighting device characterized in that a power supply plug blade that can be inserted into an outlet and is electrically connected to the driving portion is provided movably or fixed to the housing.   The illumination device according to claim 1, wherein the illumination unit includes an optical member in a light irradiation direction of the light source unit.   The illumination device according to claim 2, wherein the optical member includes any one of a light diffusion member that diffuses light, an optical lens, a color filter, and a translucent image display member, or a combination thereof. .   The lighting device according to claim 3, wherein the optical lens is supported by a moving mechanism capable of changing a distance from the light emitting diode.   The lighting device according to claim 2, wherein the optical member is detachably provided on the lighting unit.   The illuminating unit includes the light source unit configured to enter light from the light-emitting diode arranged one-dimensionally or two-dimensionally from a side surface of the light guide plate and to emit light from one or both surfaces of the light guide plate. Item 6. The lighting device according to any one of Items 1 to 5.   The plurality of light emitting diodes are configured by a combination of light emitting diodes having different emission colors, and a color tone adjustment circuit for adjusting a current supplied from the driving unit is provided for each set of the light emitting diodes of the same color. The lighting device according to any one of claims 1 to 6, wherein the lighting device is characterized in that:   The drive unit is charged with a commercial power source supplied from the plug blade, and is used to supply power to the light emitting diode when there is no power supply from the commercial power source and / or when a power switch is turned off. It has a secondary battery or a capacitor | condenser, The illuminating device of any one of Claim 1 to 6 characterized by the above-mentioned.   The lighting device according to claim 1, wherein the driving unit includes a blinking circuit that intermittently drives the light emitting diode.   The lighting device according to claim 1, wherein the plug blade is provided so as to be movable with respect to the housing via a swing mechanism.

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