JP2012044122A - Luminaire - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide a novel luminaire using a plurality of SMD type LEDs which can ensure lighting of a wider range, can achieve energy saving by selecting an optimal illumination direction according to the use situation and state, and is applicable to display by utilizing high-speed response of the LED.SOLUTION: Long boards 2a, 2b, 2c each mounted with a plurality of SMD type LEDs are arranged on a long base 1 having a polygonal or curved cross-section with such wiring that the LEDs on each board can be lighted and unlighted individually.

Description

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

In recent years, from the viewpoint of energy saving, lighting devices using light emitting diodes (hereinafter abbreviated as “LED”) as light sources instead of incandescent bulbs and fluorescent lamps have been used.

Many of the LEDs used in such illumination devices are surface-mounted LEDs (hereinafter abbreviated as “SMD type LEDs”) with high brightness and a wide diffusion range.

Such an illuminating device has a plurality of SMD type LEDs arranged on a long substrate as shown in Non-Patent Document 1 because of its ease of manufacture and wide application, and it can be used as an illuminating device similar to a fluorescent lamp. It is flexible and has been widely applied to signboard backlights, foot lamps, interior decoration, illumination, indirect lighting, and the like.

In addition, as shown in Non-Patent Document 2, there are some which use LEDs in which three primary color chips of RGB (red, green, blue) are mounted on one SMD, and dimming using a dedicated controller Is also possible.

In addition, in such an illuminating device, there is an example in which two to three rows of SMD type LEDs are arranged on a long substrate in order to improve luminance and widen the irradiation range. It must be above. For this reason, the normal direction of the SMD type LED has the highest luminance, and it is difficult to uniformly illuminate a wide area, and it is required to irradiate a wider area uniformly.

However, while an illuminating device that can uniformly illuminate a wide area is required, an illuminating device with a limited illumination range may be required. For example, in the case of ceiling lighting installed near a light window, when the light from the window is in the daytime, lighting in the direction away from the window is required, and the light from the window does not enter at night, A wide range of lighting devices including the window side is required. It is also necessary to perform optimal illumination depending on the installation location of the lighting device, changes in usage conditions, and the like. In Patent Document 2, the angle of the LED installation base is mechanically changed. However, there is a possibility that the lighting device becomes complicated and costs increase.

  Further, the brightness control of the SMD type LED uses current control or pulsed current control, but it is relatively complicated as in Patent Document 1, and brightness unevenness or flickering may occur due to variations in LED elements. While it is important for a lighting device using an SMD type LED to improve brightness and widen the lighting, it is also necessary to save energy by changing the brightness of the lighting according to changes in the situation.

JP 2009-238520 A JP 2007-141642 A

http://www.neo-w.co.jp/LED_tape.html http://www.xmas-deco-lights.com/shop/LEDTapeLight.html

  As described above, in an illumination device using SMD type LEDs mounted on the same plane, the irradiation pattern is generally a spherical irradiation pattern with the LED mounting surface as a tangent. For this reason, the illuminance in the normal direction of the LED mounting surface is strong, and there is a problem in making it possible to illuminate a wider range as uniformly as possible.

  In addition, while an illumination device that can illuminate a wide range as uniformly as possible is required, it is also a problem to realize an illumination device that can control the direction of illumination according to changes in usage conditions.

  Furthermore, it is also a problem to achieve energy saving by controlling the brightness with a simple device without requiring a complicated brightness control device.

  In order to solve the above-described problems, an illumination device according to the present invention includes an SMD type LED mounted on each individual long substrate on a base having a polygonal or curved surface as in claim 1. The SMD type LED on each installation surface board is arranged and wired so that it can be selectively flashed for each surface.

  As one embodiment of the present invention, when long SMD type LEDs are arranged and lighted on three surfaces excluding the trapezoidal bottom surface of a long base having a trapezoidal cross section, the normal lines of the three surfaces of the LEDs are different so that a wider range is uniform. It becomes possible to illuminate.

  For example, if this lighting device is equipped with a ceiling, all three SMD LEDs are turned on at night when the surroundings are dark, but only the SMD LED on the top of the trapezoid is turned on and selected during the day when the surroundings are bright. If the other two surfaces are not turned on, energy saving can be achieved.

In the lighting device according to the embodiment of the present invention, only one of the trapezoidal side surfaces, one of the trapezoidal side surfaces and the top two surfaces, and the top only can be selected from five directions.

Moreover, in said illuminating device, you may comprise so that LED of one or several elongate board | substrates can be automatically selected and blinked by CPU control for every board | substrate with the signal from another sensor.

Further, in the above lighting device, a plurality of long substrates on which one or more rows of SMD type LEDs are arranged are attached over the entire circumference of a long base having a polygonal or curved cross section, and the base is horizontally or horizontally mounted. You may comprise so that LED of the long board | substrate which installed in the vertical vertical type | mold and arrange | positioned each SMD type LED can be selectively blinked for every board | substrate.

In the above lighting device, one or a plurality of SMD type LEDs corresponding to the direction of human presence is set to one or more based on information from a known human sensor (human presence direction sensor) installed separately from the lighting device. You may comprise so that LED of the elongate board | substrate arranged in multiple rows may be lighted.

Furthermore, in the above-described lighting device, one or more of the long substrates in which one or more SMD type LEDs are arranged are used, and an LED in which chips of different primary colors are mounted on one SMD is used. The dimming may be performed using a dedicated controller.

  As described above, according to the present invention, by attaching a plurality of elongated SMD LEDs at different angles, the irradiation direction of each SMD LED can be shifted, and a wide range can be illuminated as uniformly as possible. .

  On the other hand, the lighting direction can be changed without requiring a complicated mechanism by selectively lighting a plurality of long-arranged SMD LEDs mounted at different angles.

  Moreover, according to the situation as described above, it is possible to construct an energy saving lighting device by turning on the SMD type LED only in a necessary direction.

  In addition, since the SMD type LED can emit not only white light but also each color such as red and blue, the light emission color is changed at each angle, and an effect as an illumination device and illumination can be expected.

Furthermore, since the SMD type LED can respond at high speed, it is possible to provide a new illumination device and display by sequentially lighting up the illumination devices having different emission colors for each angle as described above. Such a high-speed lighting illumination device is a function that is difficult to realize with a fluorescent lamp.

It is a figure which shows the whole schematic structure in one Example of the illuminating device using SMD type LED which concerns on this invention. It is sectional structure drawing in one Example of the illuminating device using SMD type LED which concerns on this invention. It is a figure which shows the light emission pattern in one Example of the illuminating device using SMD type LED which concerns on this invention. It is explanatory drawing which made one Example of the illuminating device using SMD type LED which concerns on this invention the illuminating device of ceiling mounting. It is a figure which shows the cross-section of another Example of the illuminating device using SMD type LED which concerns on this invention. It is a figure which shows the cross-section of another one Example of the illuminating device using SMD type LED which concerns on this invention. It is a figure explaining the power supply blinking method of one Example of the illuminating device using SMD type LED which concerns on this invention. It is explanatory drawing at the time of carrying out CPU control of the power supply blink of one Example of the illuminating device using SMD type LED which concerns on this invention. It is explanatory drawing which adds the cover which covers the base which mounted the SMD type LED board of one Example of the illuminating device using the SMD type LED which concerns on this invention. It is the schematic at the time of applying to the indoor illumination lamp of the motor vehicle of one Example of the illuminating device using SMD type LED which concerns on this invention. It is the schematic at the time of applying as an in-store lighting tower of the apparel related store of one Example of the illuminating device using the SMD type LED which concerns on this invention.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In the following, the scope necessary for explanation for achieving the object of the present invention is schematically shown, and the scope necessary for explanation of the relevant part of the present invention will be mainly explained, and the place where explanation is mainly omitted. Are according to known techniques.

  FIG. 1 is a perspective view showing an outline of a lighting apparatus according to an embodiment of the present invention, and FIG. 2 is a cross-sectional view of the embodiment. As shown in the figure, the angle A of the trapezoidal base 1 is generally set to an almost full width at half maximum of the radiation pattern of the SMD type LED. Long substrates 2a, 2b and 2c on which one to several rows of SMD type LEDs 3 are mounted are attached to three surfaces excluding the bottom surface of the trapezoidal base 1. As the base material, a metal material having excellent heat conduction is desirable in order to escape the heat generated by the SMD type LED mounted on the base.

FIG. 3 is a diagram showing a light emission pattern of an SMD type LED mounted on a trapezoidal substrate. The light emission pattern of each LED is generally a spherical pattern centered on the normal of the mounting surface from the center of the LED. If it does in this way, since the light emission pattern of LED of each attachment surface overlaps by the half-width angle A, it can illuminate the wide range substantially uniformly.

FIG. 4 is a schematic diagram when the lighting device according to the embodiment of the present invention is installed in a room near a window as ceiling lighting. In the daytime, there is daylight from the window, so there is not much need for 2b SMD type LED lighting and only 2a or 2c or both may be lit. Further, when assuming an office or the like, it is possible to reduce power consumption as energy saving by turning on only 2a, for example, at lunch break. Furthermore, at night, if all 2a, 2b and 2c are turned on, a wide area can be illuminated.

On the other hand, when only the worker is 4A in the above, only 2a and 2b are lit, and when only the worker is 4B, only 2a and 2c are lit and energy saving can be achieved. Such lighting control can be automatically controlled by sensing the presence of an operator, as will be described later.

FIG. 5 is a diagram showing a cross-section of a lighting device according to another embodiment of the present invention. In the above description, the lighting device has been described in which three sets of SMD type LED substrates are attached to a trapezoidal base, but a plurality of SMD type LED substrates are attached with a cross section of the attachment base further made as a polygon 5A or an arc 5B. It can also be set as a lighting device. In this case, energy saving can be easily achieved by changing the illumination direction in more detail, or by lighting every other SMD type LED board when the room is bright, for example.

  FIG. 6 is a view showing a cross section of a lighting apparatus according to another embodiment of the present invention. This is an example in which the base on which the SMD type LED substrate is attached is a polygonal column 6A or a column 6B. 1 and 5 are mainly described as a ceiling-mounted or wall-mounted lighting device, the lighting device as shown in FIG. 6 can be applied as a vertical floor-mounted lighting device as a window display lighting device or apparel-related in-store lighting. Further, by performing lighting control as will be described later, it is possible to produce an effect that attracts attention by a product that is illuminated by changing the illumination direction according to the movement of the person or sequentially blinking.

  FIG. 7 is a diagram illustrating a blinking method of an illumination device according to another embodiment of the present invention. The simplest method is to make the power to the plurality of SMD type LED boards 2-1, 2-2,..., 2-N blink by the individual switches S-1, S-2,.

  FIG. 8 shows an embodiment of the present invention in which the blinking control of the power switch is performed by the CPU.

The control by the CPU can illuminate, for example, by turning on one or more SMD LED substrates in the direction in which the presence of a person is sensed by a signal from a human sensor based on infrared detection.

  In each of the embodiments described above, the LED mounting substrate is left exposed to simplify the description. However, as shown in FIG. 9, the SMD type LED is made of a transparent material such as an acrylic resin or glass for LED protection. You may attach the cover which covers the whole base to which the board | substrate was attached. Alternatively, it is obvious that a cover made of frosted glass or milky white material may be attached so that the LED light does not directly shine on the eyes.

As described above, the LED of the SMD type LED substrate is an LED in which the three primary color chips of RGB (red, green, and blue) are mounted on one SMD, and the light is adjusted using a dedicated controller. Obviously, it is possible.

  FIG. 10 is a schematic view when one embodiment of the lighting device using the SMD type LED according to the present invention shown in FIG. 1 is applied to a three-row seat indoor lighting. Many of the indoor interior lightings currently used are incandescent bulbs or LED spot lighting, but it is difficult to widely illuminate the driver's seat and passenger's seat that spread laterally. Here, if the illuminating device according to the present invention shown in FIG. 1 is used, it is possible to widely illuminate a horizontally long seat by a long SMD type LED. Moreover, if it is installed in the vicinity of the center of the three-row sheet and the illumination normal direction is set so as to face the 1, 2, or 3-row sheet, each sheet can be selected and illuminated widely. If it does in this way, indoor wiring etc. will become simple rather than installing an illuminating device above each sheet | seat, and it can contribute also to the reduction of installation cost.

  FIG. 11 is a schematic view when the embodiment of the lighting device using the SMD type LED according to the present invention shown in FIG. 6 is applied as an in-store lighting tower of an apparel-related store. In order to make the explanation easy to understand, FIG. 11 shows a state in which the SMD type LED substrate can be seen without covering the lighting device. ) Is installed. By doing so, the presence direction of the customer can be detected by the human sensor, and one or a plurality of SMD type LEDs in the direction can be illuminated. In such illumination, the product in the moving direction is illuminated brighter according to the movement of the customer, and the product can be emphasized and appealed more than when the entire product is illuminated uniformly.

As described above, according to the invention according to the present application, it is possible to widely illuminate an illumination target, and by changing the illumination direction, it is possible to provide an illumination device according to the use environment and the situation, which can contribute to energy saving. . Such an illuminating device is not limited to an interior illumination lamp, but can be expected to be used in other fields such as the above-described automobile interior lighting and museum exhibition illumination devices.

  Especially when it is applied to lighting equipment for museums and fresh foods, it can illuminate only the direction in which the audience and customers are present in combination with human sensors. Can also be reduced.

  Further, the lighting device according to the present invention described with reference to FIG. 11 can be used not only as a lighting device but also as a window display or a direction guidance lighting device by using a lighting direction change and a high-speed blinking response characteristic of an LED as well as lighting applications. It brings great benefits to the industry.

DESCRIPTION OF SYMBOLS 1 ... Base, 2a, 2b, 2c ... Long board | substrate which arranged SMD type LED, 3 ... SMD type LED, 4 ... Normal line of LED light emission, 5 ... LED light emission radiation pattern, 4A ... Window side working environment, 4B ... Back working environment, 5A ... Polygon base example, 5B ... Circular base example, 6A ... Polygon column base example, 6B ... Cylindrical base example, 2-1 to 2-N ... Multiple SMD types Long substrate with LEDs arranged thereon, S-1 to SN ... Plural power switches, 81 ... Power switch controller, 82 ... CPU, 83 ... Sensor, 91 ... Cover, 101 ... Automotive interior light, 111 ... Vertical type Illumination tower, 112 ... Human sensor, 113 ... Customer

Claims (5)

  In an illumination device using a surface-mounted light emitting diode (SMD type LED) as a light source, a plurality of long substrates on which one or more rows of the SMD type LEDs are arranged are attached to a long base having a polygonal or curved cross section, An illumination device characterized in that LEDs on a long substrate on which SMD type LEDs are arranged can be selectively blinked for each substrate.   2. The lighting device according to claim 1, wherein one or a plurality of long substrate LEDs can be automatically selected and blinked by CPU control for each substrate by a signal from another sensor.   2. The lighting device according to claim 1, wherein a plurality of long substrates each having one or more SMD LEDs arranged in a plurality of rows are attached over the entire circumference of a long base having a polygonal or curved cross section. Or the lighting apparatus characterized by installing in the vertical vertical type | mold, and being able to selectively blink LED of the long board | substrate which has arrange | positioned each SMD type LED for every board | substrate.   The lighting device according to any one of claims 1 to 3, which corresponds to the direction in which a person is present, based on information from a known human sensor (a human presence direction sensor) installed separately from the lighting device. Illuminating device characterized in that one or a plurality of SMD type LEDs are arranged to illuminate a long substrate LED in which one or a plurality of rows are arranged.   4. The lighting device according to claim 1, wherein one or more of the long substrates on which one or more rows of SMD type LEDs are arranged are replaced with one chip of a different primary color. The lighting device is characterized in that the LED mounted on the SMD is used for light control using a dedicated controller.

Images