JP2011060740A - Light source device - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide a light source device which is used for a backlight of illumination, signboard, and monitor or the like and for a game device and in which a suitable coloring light can be obtained. <P>SOLUTION: The light source device is constructed of a light source unit LS in which at least one set of a red light-emitting diode element LEDR, a green light-emitting diode element LEDG, and a blue light-emitting diode element LEDB are mounted, an output unit OUT which controls each of the red light-emitting diode element LEDR, the green light-emitting diode element LEDG, and the blue light-emitting diode element LEDB of the light source unit LS respectively independently, a control unit CO which controls each LED corresponding to a control signal received from a sensor SEN, a memory MEM, a power supply PS, and an external remote control RMT. As the control unit CO controls each red light-emitting diode element LEDR, green light-emitting diode element LEDG, and blue light-emitting diode element LEDB of the light emitting unit LS, the light emitted from the light source unit LS can be arbitrarily adjusted. <P>COPYRIGHT: (C)2011,JPO&INPIT

Description

The present invention relates to a light source device that can provide comfortable illumination light for use in lighting, signboards, and the like, and in particular, can adjust each light source color to a favorite color, and store and call the light emission condition of the light source light. It is related with the light source device which can do.

Currently, light-emitting diodes of a predetermined color such as a light bulb color and white light are used for a small light-emitting diode light source used for illumination as a light source device, and only two colors can be changed. These light emitting diodes are characterized by a cold color with a bluish tint in order to generate white light by irradiating a phosphor to a blue light emitting diode.

  On the other hand, in real life, when you want to change the color of the lighting according to the season or time zone, when you want to change your favorite color, or when you want to change the brightness without changing the hue in the meal etc. Needs and desires are increasing with the advancement of human life.

In recent years, light source devices with dimming used for the stage etc. are provided as means for converting to optical signals using, for example, DMX signals, etc., but they have a large-scale device structure and require complicated functions and devices. Therefore, it was not suitable for small lighting.

  In addition, regarding this type of prior art, for example, the following Patent Document 1 can be cited.

  JP 2005-216516 A

However, from the viewpoint of light emission color, a small light source device has a light bulb color in the case of a light bulb color light emitting diode, and white light in the case of a white light emitting diode, and cannot obtain a specific desired color. The only way to do this is to color the surface of the light source in a specific color or irradiate the object with light emitted from the light source through a filter. There was a problem that it was impossible to change freely.

In addition, a toning type lighting device represented by DMX, which is used in large-sized lighting devices, is a large scale and unsuitable for use in individual lighting fixtures, for example, light bulb type lighting fixtures. In addition, the gradation of the toning is fine, and the general customer has an excessive level of subdivided tones.

In addition, when a light source is configured by combining a red light-emitting diode element, a green light-emitting diode element, and a blue light-emitting diode element, band-like color unevenness occurs at the edge of the illumination pattern projected on the object in the lighting device. However, there is a problem of reducing the color mixing property.

Therefore, the present invention has been made to solve the above-described conventional problems, and the object thereof is to solve the non-color-matching performance that has not been obtained by the light source device so far, and for the user and the user. It is an object of the present invention to provide a light source device in which a user can freely change colors as desired and can store those colors.

In order to achieve such an object, the light source device according to the present invention includes a light source unit on which at least one set of red, green, and blue light-emitting diode elements is mounted, and independent of each of the red, green, and blue light-emitting diode elements of the light source unit. Output unit for controlling, a sensor unit for receiving a toning control signal transmitted from the outside, and independently controlling red, green and blue light emitting diode elements in response to the control signal received from the sensor unit A control unit, a storage unit that independently stores control signals of the control unit, a light source unit, a control unit, a power supply unit that supplies power to the storage unit, and a sensor unit that controls red, green, and blue light emitting diode elements. By configuring it with an external remote control that transmits color control signals, the output control unit controls each red, green, and blue light emitting diode element of the light emitting unit. In, since the arbitrarily adjustable light emitted from the light emitting portion, it is possible to overcome the drawbacks of the related art.

It should be noted that the present invention is not limited to the above-described configurations and the configurations described in the embodiments described below, and it goes without saying that various modifications can be made without departing from the technical idea of the present invention. Yes.

According to the light source device of the present invention, it is possible to obtain an extremely excellent effect that a user or user can obtain a toning that can change the emission color of the light source unit to an arbitrary color as a light source, and reproduce the adjusted color. Therefore, it is possible to obtain an extremely excellent effect that the operation is easy and the brightness can be adjusted without changing the hue.

Hereinafter, specific embodiments of the present invention will be described in detail with reference to the drawings of the examples.

FIG. 1 is a block diagram illustrating a configuration of a light source device according to a first embodiment of the present invention. In FIG. 1, LS is a light source section composed of a red light emitting diode element LEDR, a green light emitting diode element LEDG, and a blue light emitting diode element LEDB. Although only one set of the light source unit LS in which the red light emitting diode element LEDR, the green light emitting diode element LEDG, and the blue light emitting diode element LEDB are connected in parallel is illustrated, the light source unit LS is made of, for example, an aluminum material having heat dissipation properties. In some cases, a plurality of sets are mounted in parallel on a circuit board that is insulated and close to each other.

The red light-emitting diode element LEDR, the green light-emitting diode element LEDG, and the blue light-emitting diode element LEDB are, for example, face-up type light-emitting diode elements having the same luminous intensity and excellent electrical insulation. . The light source LS is connected in series with an output unit OUT for adjusting the toning output independently for each of the red light emitting diode element LEDR, the green light emitting diode element LEDG, and the blue light emitting diode element LEDB.

In FIG. 1, CON is a control unit composed of a control unit CO and a storage unit MEM, and the control unit CON receives the red light emitting diode element LEDR and the green light emitting diode element received from the outside from the sensor SEN. The control unit CO is configured to adjust control signals for the LEDG and the blue light-emitting diode element LEDB, and the storage unit MEM is configured to store these control signals.

The control unit CO includes a red control unit COR, a green control unit COG, and a blue control unit COB that adjust the toning output signals of the red light emitting diode element LEDR, the green light emitting diode element LEDG, and the blue light emitting diode element LEDB. It is composed of

In FIG. 1, RMT is an external remote control, and this external remote control RMT outputs the output to each red light emitting diode element LEDR, green light emitting diode element LEDG, and blue light emitting diode element LEDB to the sensor SEN of the control unit CO. The light source device is driven by transmitting an infrared signal IR as a control signal to be controlled via the infrared diode TRA.

This remote control RMT is, for example, on / off of the power supply part PS, red / green / blue color tone intensity of the red light emitting diode element LEDR, green light emitting diode element LEDG and blue light emitting diode element LEDB, and the entire light source part LS. The brightness can be adjusted and any combination of colors can be stored. For example, as shown in FIG. 1, a storage button switch BUS for storing a customer's favorite color is installed on the front surface of the remote control RMT, and an arbitrary color can be stored by appropriately operating these button switches BUS. . In addition, these can be overwritten many times. Note that TRA is an infrared diode that transmits a control signal to the sensor SEN of the control unit CO.

In FIG. 1, PS is a power supply unit. This power supply unit PS is externally supplied with an AC voltage to the light source unit LS, the control unit CO in the control unit CON, the storage unit MEM, the light source unit LS, the output unit OUT, and the like. It is a power supply unit that inputs AC, converts it into a DC voltage DC, and supplies predetermined power.

In the light source device configured as described above, the toning adjustment signal for driving each red light emitting diode element LEDR, green light emitting diode element LEDG, and blue light emitting diode element LEDB of the light source unit LS is conveniently a PWM signal, Also, it is very convenient to store. By adjusting the duty ratio (output ratio) of the PWM signal for adjusting the respective hues, the respective currents flow through the red light emitting diode element LEDR, the green light emitting diode element LEDG, and the blue light emitting diode element LEDB. Various colors can be emitted. When all the duty ratios are set to zero, a non-lighting state is entered. In order to reduce the size, the gradation of the duty ratio is set to at least 256 gradations.

In this non-lighting state, by adjusting the red PWM signal to increase the duty ratio, the red output is increased, the red light emitting diode element LEDR emits red light, and the red light is gradually emitted from the light source LS. The Further, by adjusting the green PWM signal from the non-lighting state to increase the duty ratio, the green light emitting diode element LEDG emits green light, and as a result, the red, green composite color, and the yellow emitted light are gradually emitted from the light source unit LS. To be emitted. Furthermore, by adjusting the blue PWM signal from the non-lighting state to increase the duty ratio, the blue light emitting diode element LEDB emits blue light, and the light emitted from the light source unit LS is composed of red, green and blue combined colors and white light. Is done.

Moreover, by adjusting the output level of each color of the PWM signal, the ratio of the red duty ratio, the green duty ratio, and the blue duty ratio to adjust these toning adjustment ratios, the composite color is yellow or purple, Color development of each color such as light bulb color, lunch white, warm white, and the like is obtained, and color reproducibility is facilitated by storing these duty ratios in the storage unit MEM.

Furthermore, by changing the overall output level of the PWN signal of each color for the toned color, the brightness can be changed without changing the color.

Further, by providing the storage unit MEM with various storage functions, a plurality of colors can be preset by providing six switches BUS, so that the customer can freely set a favorite color. Since six colors can be preset in the configuration of the embodiment, for example, a light bulb color, warm white, day white, sunny sky, blue, and red can be set.

In the first embodiment described above, the color adjustment by the remote control RMT has been described. However, it is also possible to provide the same switch as described above in the control unit CON and adjust them. It is also possible to process with a PLC signal without using the remote control RMT. In this case, an effect equal to or higher than that of the conventional art can be obtained by replacing the brightness adjuster in the conventional store with the PLC signal. That is, it is possible to adjust not only the brightness but also the hue and toning, and can cope with energy saving, so that it is possible to realize light control such as bright red and dark red at the same time.

By using a timer, in addition to a preprogram that can automatically adjust colors according to the season, time, or purpose, the user or user can adjust any color for a specific purpose. Is also possible.

It is well known that when the red light emitting diode element LEDR, the green light emitting diode element LEDG, and the blue light emitting diode element LEDB are assembled in a unit, color unevenness of these emitted colors occurs.

Next, the cause of color unevenness will be described with reference to FIG. FIG. 2A is a plan view of a main part in which a red light-emitting diode element LEDR, a green light-emitting diode element LEDG, and a blue light-emitting diode element LEDB are mounted on a circuit board CIR connected to a reflecting plate REF that also has a heat dissipation property. FIG. 2B is a cross-sectional view taken along the line DD ′ in FIG.

As shown in FIG. 2A, each light source light emitted from the red light emitting diode element LEDR, the green light emitting diode element LEDG, and the blue light emitting diode element LEDB has a side wall portion EDG of the reflector REF having a substantially U-shaped cross section. As shown in FIG. 2B, the block A, which is a substantially main part of the planar object OJT, gathers three light sources and becomes white, but the main part block A In the block B which is the outer region of the block, red and green are yellow, and in the block C which is the outer side (outermost peripheral region), only red light is emitted. In order to eliminate these phenomena, the arrangement of the red light emitting diode element LEDR and the blue light emitting diode element LEDB can be reversed as shown in the sectional view of FIG.

Further, as shown in FIG. 4, a similar phenomenon is also observed in a linear light source in which red light emitting diode elements LEDR, green light emitting diode elements LEDG, and blue light emitting diode elements LEDB are arranged in series. The block B is colored yellow and the block C is colored red. In order to solve these problems, the arrangement of the light source portions LS can be alternately arranged as shown in FIG.

It is a block diagram which shows the structure of Example 1 of the light source device by this invention. FIG. 2A is a diagram for explaining the cause of color unevenness in a light source device according to the present invention, and FIG. FIG. 2B is a cross-sectional view taken along the line DD ′ of FIG. 2A. It is a figure explaining the arrangement direction of the red light emitting diode element concerning the light source device by this invention, a green light emitting diode element, and a blue light emitting diode element. It is a figure explaining the arrangement direction of the conventional red light emitting diode element of the light source device by this invention, a green light emitting diode element, and a blue light emitting diode element. It is a figure explaining the arrangement direction of the red light emitting diode element of the light source device by this invention, a green light emitting diode element, and a blue light emitting diode element.

LS: Light source unit, LEDR: Red light emitting diode element, LEDG: Green light emitting diode element, LEDB: Blue light emitting diode element, CIR: Circuit board, REF: Reflector, EDG ..Sidewall part, OJT ... object, CON ... control part, OUT ... output part, CO ... control part, COR ... red control part, COG ... red control part, COB ... Blue control part, MEM ... Storage part, SEN ... Sensor, RMT ... Remote control part, BUS ... Button switch, PS ... Power supply part IR ... Infrared signal TRA ...・ Infrared light emitting diode.

Claims (6)

A light source portion on which at least one set of red, green and blue light emitting diode elements is mounted;
An output unit that independently controls each of the red, green, and blue light emitting diode elements of the light source unit;
A sensor unit for receiving a toning control signal transmitted from the outside;
A control unit for independently controlling the red, green and blue light emitting diode elements in response to a control signal received from the sensor unit;
A storage unit that independently stores the control signals of the control unit;
A power supply unit that supplies power to the light source unit, the control unit, and the storage unit;
An external remote control for transmitting toning control signals of the red, green and blue light emitting diode elements to the sensor unit;
A light source device comprising:   The light source device according to claim 1, wherein the light source unit includes the red, green, and blue light emitting diode elements mounted on the same circuit board. The light source device according to claim 1, wherein the red, green, and blue light emitting diode elements are face-up type light emitting diode elements, and are electrically insulated from each other.   The light source device according to claim 1, wherein the light source unit is mounted in the same device as the output unit, the control unit, the storage unit, and the power supply unit.   2. The light source device according to claim 1, wherein in the light source unit, arrangements of the red, green, and blue light emitting diode elements adjacent to each other are alternately changed along an arrangement direction.   The light source device according to claim 1, wherein the light source unit is a light bulb type light source unit, a line type light source unit, or a surface emitting light source unit.

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