KR20040066650A - Led lamp for controlling color temperature - Google Patents

Abstract

PURPOSE: An LED lamp for controlling color temperature is provided to control the color temperature by using a white LED and LEDs of other colors to correct the white emission. CONSTITUTION: An LED lamp for controlling color temperature includes a white LED, a first correction LED, and a second correction LED. The white LED is controlled as the intermediate color temperature between the lowest color temperature and the highest color temperature. The first correction LED has an emission spectrum including a peak wavelength, which is located around an intersection part between a long wavelength part of a chromaticity diagram and an extended line of a connecting line of the lowest color temperature and the intermediate color temperature. The second correction LED has an emission spectrum including a peak wavelength, which is located around an intersection part between a short wavelength part of a chromaticity diagram and an extended line of a connecting line of the highest color temperature and the intermediate color temperature.

Description

LED Lamp with Adjustable Color Temperature (LED Lamp for Controlling Color Temperature)

The present invention relates to an LED lamp capable of adjusting the color temperature, and in particular, to a colorless LED lamp capable of adjusting color temperature useful for a lightless lamp used for surgical lighting, the color temperature of a desired place can be reproduced and the makeup is good. It relates to a makeup lamp that can evaluate the LED lamp suitable for the interior lighting of the living room to select the color temperature of the desired atmosphere.

At present, a halogen lamp is used as a surgical lightless lamp. This halogen lamp is powered by a flicker-free DC power supply and is set at a temperature of 4000 ° K, which is most suitable for Asian eyes. However, there is a disadvantage that the heat generation of the halogen lamp is too large. Therefore, in the shadowless lamp using a halogen lamp, a cold mirror is disposed on the rear surface of the halogen lamp to reflect at least 90% of visible light and to transmit at least 90% of the heating wire to the back. Alternatively, it is designed to reflect the light from the halogen lamp to the back side, absorb the heat ray by using a cold filter that transmits more than 90% of visible light and hardly transmits the heat ray, and does not affect the operating room in the irradiation direction It is.

That is, in the prior art, it is necessary to add various mechanisms to remove the heat effect in addition to the halogen lamp, and the disadvantage is that the lifetime of the halogen lamp is short as about 2000 hours due to the heat effect and the heat effect. Moreover, even if the heat rays do not radiate forward, the heat effects radiated to the back side do not resolve. Furthermore, according to the inventor's view, at least a suitable color temperature should be set by the surgical site (brain surgery, thoracic surgery, abdominal surgery, orthopedic surgery) in the surgical operation. I'm not doing it.

The present invention has been made to solve the above problems, and an object of the present invention is to provide an LED and the like that can adjust color temperature with a very low heat generation and a long lifespan.

Another object of the present invention is to provide an LED and the like capable of adjusting the color temperature which can improve the color rendering.

1A is a graph showing an embodiment of a method of setting and adjusting a color temperature on a chromaticity diagram in an LED or the like capable of adjusting color temperature according to the present invention.

1B is a graph showing another embodiment of a method for setting and adjusting a color temperature on a chromaticity diagram in an LED or the like capable of adjusting color temperature according to the present invention.

Figure 1c is a graph showing another embodiment of the method for setting and adjusting the color temperature on the chromaticity diagram in the LED, etc. color temperature adjustable according to the present invention.

Figure 2 is a schematic diagram showing a method of using the LED light adjustable color temperature according to the invention as an auxiliary light source in the operating table.

Figure 3 is a schematic diagram showing a method of using the LED light of the color temperature adjustable according to the present invention as an auxiliary light source in the shadowless lamp.

Figure 4 is a plan view showing the placement of the LED in the LED, such as color temperature adjustable according to the present invention.

Fig. 5 is a plan view showing the configuration of the LED head in the preferred embodiment of the LED or the like capable of adjusting the color temperature according to the present invention.

6 is a cross-sectional view taken along the line A-A of FIG. 5 as showing the installation state of the LED head in a preferred embodiment of the LED, such as color temperature adjustable according to the present invention.

7 is a graph showing representative spectra of commercially available white LEDs.

8 is a graph showing an example of a high color rendering spectrum that can be realized by the LED of the present invention.

Fig. 9 is a graph showing another example of the high color rendering spectrum which can be realized by the LED of the present invention.

FIG. 10 shows a method of uniformly mixing LEDs using a spherical reflecting mirror and setting them to a predetermined illuminance aperture as one example of a specific use example of an LED lamp capable of adjusting color temperature according to the present invention. Is a perspective view which shows the white LED used for the said LED etc.

11A is a schematic cross-sectional view of a conventional improved downlight, and FIG. 11B is a schematic cross-sectional view showing a case where an LED lamp according to the present invention is applied to downlight.

12 is a perspective view illustrating a control method when the LED lamp according to the present invention is used in a room light control system of a conventional living room.

13A and 13B are graphs showing the relationship between color temperature and illuminance at 24 hours per day.

Explanation of symbols for main parts of the drawings

10: operating table 11: conventional bar

20: lightless 30: LED auxiliary light source device

31: flexible tube 32: LED light source

33: DC voltage source 41: LED light

42: flexible arm I-1 to I-4: living room LED

II-1, II-2, II-4: LED downlights II-3: Ceiling LED lights

Referring to the principle of the present invention for achieving the above object is as follows.

The present inventor proposes the use of an LED such as a white LED having extremely low heat generation, no flickering, and long-lasting durability (100,000 hours). However, it is known that the color temperature is not easy to adjust in white LEDs. This is because the adjustment of the emission wavelength of the blue LED as a light source and the adjustment of the phosphor composition accordingly are accompanied. As a result of careful study by the present inventors, it was found that the white LED in the current state is not only difficult to set the color temperature freely, but also has problems in color rendering, and is not suitable as a surgical light in the present state. Spectral diagram of an LED serving as a light emitting layer and a commercially available white LED comprising YAG: Ce as a phosphor)

In order to solve this problem, the present inventors have further studied, and found that it is better to correct the color temperature in consideration of the spectral distribution as well as the color temperature of the current white LED. As a result of further research, it was found that for a white LED set to a predetermined color temperature, an LED of a corrected color having a peak wavelength was prepared in a specific wavelength region, and color rendering as well as color rendering was corrected by mixing with the LED. The present invention has been accomplished.

Hereinafter, the present invention will be described in detail with reference to the accompanying drawings.

Referring to Figure 1, it will be described a preferred embodiment according to the present invention.

According to this embodiment, a predetermined intermediate color temperature X, for example between the lowest desired color temperature Xmin (° K), for example between 3000 ° K and the highest desired color temperature Xmax (° K), for example 8000 ° K, for example 585, for example, near the intersection L1 (nm) on the long wavelength side of the chromaticity diagram that intersects the extension line of the white LED light source set at 5000 ° K and the lowest color temperature Xmin and the intermediate color temperature X. In the vicinity of a wavelength S1 (nm) point on the chromaticity diagram that intersects a first correction LED light source having an orange emission spectrum with a peak wavelength at 610 nm at and an extension line connecting the highest desired color temperature Xmax and the set color temperature X, For example, it consists of a 2nd correction LED light source which has a blue emission spectrum in which the peak wavelength is located from 470 to 490 nm.

The color temperature of the white LED light source may be adjusted in a direction of a desired minimum color temperature by the color mixture ratio of the white LED light source and the first correction or second correction LED light source, for example, by the color mixing with the first correction LED light source. have. Alternatively, the set color temperature of the white LED light source may be adjusted in the direction of the highest color temperature by mixing color with the second correction LED light source. On the other hand, in the present invention, the color temperature means a color temperature assumed on a black body radiation line formed on a chromaticity diagram and a color temperature close to that.

On the other hand, the peak wavelength of the first correction LED light source and the second correction LED light source described above is one preferred example, and thus the present invention is not limited thereto. For example, a light source having an orange emission spectrum having a peak wavelength at 590-630 nm is used as the first compensation LED light source, and a light source having a blue emission spectrum having a peak wavelength at 430-470 m is used as the second compensation LED light source. It is also possible to use.

Referring to Figure 2, it will be described another preferred embodiment according to the present invention.

In this embodiment, the white LED light source is set to the desired minimum color temperature Xlow (° K). That is, the peak wavelength is located near the intersection point S2 (nm) of the shorter wavelength on the chromaticity diagram that intersects the white LED light source set to the lowest color temperature and the extension line of the line connecting the lowest color temperature Xlow and at least one desired color temperature X. It consists of a 3rd correction LED light source which has the emission spectrum located. Then, the set color temperature of the white LED light source may be adjusted in a higher color temperature direction by the color mixture ratio of the white LED light source and the third correction LED light source.

Referring to Figure 3, another preferred embodiment according to the present invention will be described.

This embodiment sets the white LED light source to the desired highest color temperature X high (° K). That is, the peak wavelength is located near the intersection L2 (nm) of the long wavelength side on the chromaticity diagram that intersects the white LED light source set to the highest color temperature and the extension line of the line connecting the highest color temperature Xhigh and the at least one desired color temperature X. And a fourth correction LED light source having an emission spectrum. Then, the set color temperature having the white LED light source may be adjusted in a lower color temperature direction by the color mixture ratio of the white LED light source and the fourth calibration LED light source.

On the other hand, as the white LED light source used in the present invention, an LED whose emission peak wavelength is adjusted to a blue region of 400 to 490 nm, preferably 430 to 470 nm, excited by this LED, and preferably 530 to 580 nm, preferably 530 It is good to combine the YAG fluorescent substance which adjusted the fluorescence peak wavelength to yellow-green region of -570 nm (for example, FIG. 7). If necessary, white light emission can be achieved by using a wavelength close to the ultraviolet region of the LED of about 400 nm.

Setting of the color temperature of the white LED light source, as shown by the broken line in FIG. 1A, connects the peak wavelength point of the blue LED with the desired color temperature of the chromaticity diagram, extends the extension line, and extends the fluorescence spectrum at the intersection of the longer wavelength side on the chromaticity diagram. The peak wavelength can be determined, the composition of the phosphor can be determined, and a combination of both can be realized. Alternatively, set the color temperature as the center on the chromaticity diagram, extend to the left and right, and design the white LED by considering the short wavelength side of the extension line and the chromaticity diagram as the peak wavelength of the LED and the long wavelength side as the peak wavelength of the phosphor. Can be.

On the other hand, as an LED capable of adjusting the set color temperature of the white LED light source in the direction of the desired color temperature by the color mixture ratio with the white LED light source, preferably a blue LED whose light emission peak wavelength is adjusted to a blue region of 430 to 470 nm Is selected.

On the other hand, as the LED which can adjust the set color temperature of the white LED light source in the direction of the lowest desired color temperature by the color mixture ratio with the white LED light source, it is preferably 585 to 630, more preferably 585 to 600 nm orange area peak. The orange LED whose wavelength has been adjusted is selected.

As described above, according to the present invention, the overall emission color temperature can be adjusted in the range of 3000 to 8000 Kelvin by mixing the main light source LED and the corrected light source LED.

On the other hand, in the main light source LED, the mixed color is determined by the ratio of the YAG phosphor layer transmission spectral intensity (or area) and the YAG phosphor layer emission spectral intensity (or area) of the light source LED, but the ratio is 2: 1 to 1: 4. It is set and various spectra are obtained. (For example, commercially available white LEDs of Japan's Il-A Chemical Co., Ltd. show the spectrum of FIG. 7). As the phosphor amount increases around this spectrum, the spectrum of the blue region decreases and almost yellow mixed color is obtained. Is obtained. On the contrary, when the spectrum of the blue region of the LED increases, a mixed color which is almost blue is obtained. According to the person skilled in the art, the color temperature can be set in consideration of the spectral distribution.

Meanwhile, another embodiment of the present invention will be described.

In this embodiment, the color temperature is adjusted without using the correction LED. That is, it is an alternative structure of color temperature adjustment using the correction LED mentioned above. Specifically, in the main light source LED group, one or two or more auxiliary LEDs whose light emission peak wavelengths are adjusted in an invisible region are appropriately dispersed and excited by the auxiliary LEDs in a filter covering the LEDs. Fluorescence emitting a fluorescence having a peak wavelength in the blue region of ~ 490nm or a fluorescence having a peak wavelength in the orange to red region of 590 ~ 700nm is included. This makes it possible to adjust the color temperature of the filter transmission wavelength in the range of 3000 to 8000 Kelvin by the color mixture of the light emission from the main light source LED and the fluorescent light emission from the filter. Moreover, by providing the color temperature conversion filter which covers this in the white LED of the said main light source, the color temperature of a light emission wavelength can be adjusted to the range of 3000-8000 Kelvin.

Meanwhile, another embodiment of the present invention will be described.

This embodiment relates to an alternative method when no white LED is used. That is, instead of the white LED, a white light source can also be obtained as follows.

Referring to the first alternative configuration, the first blue LED adjusting the emission peak wavelength in the blue region of 430-470 nm, the second LED adjusting the peak wavelength in the yellow-green region of 530-570 nm, and 585-630, preferably Is a third LED whose peak wavelength is adjusted to an orange region of 585 to 600 nm, and may form white by mixing color as a whole. In this case, the first and third LEDs are arranged in such a manner that the second LED group is mainly dispersed therein, and the relative emission intensity of the first LED or the third LED with respect to the second LED is adjusted to thereby adjust the overall mixed color temperature. It can be adjusted in the range of 3000 to 8000 Kelvin.

Incidentally, the arrangement of the first and third LEDs in the second LED group has a good ratio of 1 ± 1: 3: 2 ± 1 as a whole. It also depends on half the width, In the case where the wavelength of each region is relatively narrow, it is preferable that the emission peaks of the respective regions are dispersed so that the ratio is 1: 3: 2.

In the second alternative configuration, a main light source LED whose emission peak wavelength is adjusted to a blue region of 430 to 470 nm is used, and an auxiliary LED whose emission peak wavelength is adjusted to an invisible region is appropriately disposed in the main light source LED group. do. On the other hand, the YAG phosphor which is excited by the main light source LED and emits fluorescence having a peak wavelength in the yellow-green region of 530-570 nm, and excited by the auxiliary LED in the filter covering the LED, and is in the blue region of 430-490 nm. A phosphor emitting a fluorescence having a peak wavelength and a phosphor emitting a fluorescence having a peak wavelength in an orange or red region of 590 to 700 nm, thereby adjusting the main light source LED intensity and the auxiliary LED intensity, By this, the color temperature of the wavelength of filter transmission light can be adjusted to the range of 3000-8000 Kelvin.

If comprised as mentioned above, the LED etc. which can adjust color temperature can be comprised. Furthermore, in order to improve not only color temperature but color rendering property, it is preferable to form the spectrum shown in FIG. 8 and FIG. The spectrum of FIGS. 8 and 9 can be formed by not only complementing the orange LED to the white LED light source, but also complementing it using the green LED. The difference between the spectral formation method of FIGS. 8 and 9 is due to the difference in the amount of the YAG phosphors used for the blue LEDs and the amount of complementary colors in the orange LEDs. The color rendering property can be improved at least by complementing with green LED. However, it is preferable to change the color temperature with respect to the white LED by using a predetermined blue LED light source or an orange LED light source as an auxiliary light source because the color temperature can be changed while improving the color rendering property.

Next, it will be described in detail to apply the LED light that can adjust the color temperature described above and improve the color rendering property to practical use, for example, a shadowless lamp used for surgical lighting, and a living room light where a color temperature of a desired atmosphere can be selected. do.

First, the application method to the existing equipment is as follows.

The case where the LED lamp is applied directly to an AC power source such as 100V like a normal light bulb will be described. In this case, a metal conductor part connected to an AC power source, a transformer connected to the metal conductor part and transforming power alternating current, and connected to the transformer are set to predetermined DC voltages for the main light source LED and the complementary LED, respectively. It is applicable by providing a dimmer to supply.

In case of applying to DC power supply, it is provided with 24V DC power supply and a dimmer connected to the metal conductor and connected to the main light source LED and complementary LED to set predetermined DC voltage respectively. Can be applied.

Referring to FIG. 11, the use of the LED lamp of the present invention as a living room light will be described.

In the living room, it is preferable to use the LED lamp of the present invention as a downlight. As shown in Fig. 11A, in the conventional downlight, the heat shield to the heat insulator 22 is necessary even if disposed obliquely. However, as shown in Fig. 11B, the use of the LED lamp 26 of the present invention can be made flat since there is little heat generation. For example, it can install so that it may plant in the ceiling panel board 24. FIG.

Referring to FIG. 12, a system for remotely controlling an existing living room interior light using the present invention will be described.

Four lighting situations are determined by the scene of the scene, meal, rest, and AV, and according to the situation, the lights of the lights of the lights I-1 to I-4 and II-1 to II-4, You can choose from three kinds of rebounds and lights out. By applying the LED lamp of the present invention to each of the lighting lamps I-1 to I-4 and II-1 to II-4, the appropriate color temperature of each situation is set in consideration of the season, morning, lunch and evening time zones, Determine the lighting schedule. By doing in this way, the lighting effect which has not been experienced so far can be simply realized by a remote control operation, and can be satisfied.

12, I-1 to I-4 are living room LED lights, II-1, II-2, and II-4 are LED downlights, and II-3 are ceiling LED lights.

Next, the lighting schedule will be described.

Conventionally, when converting the color temperature of the illumination, the incandescent lamp is first turned on and then the fluorescent lamp is turned on to measure the rise of the color temperature, and finally the incandescent lamp is turned off to the highest color temperature. However, in this method, the setting of the continuous color temperature is difficult and the color temperature cannot be freely set. According to the present invention, since it is possible to use an LED lamp that can be freely converted between the color temperature and illuminance, there is no need to replace the incandescent lamp with a fluorescent lamp, it is possible to freely set the color temperature and illuminance and to control the dimming very easily.

In addition, the following control can be easily performed by the remote control control built into the microphone computer and the sensor.

1) Setting wake-up timer

2) Setting of desired illuminance and color temperature

3) watch display

4) Turn off the lights at the desired time

5) Setting to memorize and control dimming for 24 hours a day

For example, by this method, 30 minutes before the alarm clock, the LED light is turned on, and the light is gradually brightened by a relaxed rhythm like morning, and the light is stimulated by the eyelids to slowly wake up. When the set time is reached, the color temperature is higher, the illumination is high, and the bright morning light can prompt a refreshing morning. Moreover, in the evening, the light with low color temperature can create a calm space and calm the mind.

This function can be used for lighting of show windows, lighting of advertisements, lighting of clothing stores, lighting of cosmetics stores, and the like to produce simulated lighting at various times of the day and to select appropriate clothes and makeup in each scene. In the case of a surgical operation, the color temperature and illuminance may be automatically or appropriately selected by dividing the operation preparation time, the initial operation, the mid operation, the late operation, and the rest time. FIG. 13 is a graph showing a relationship between color temperature and illuminance for 24 hours a day, and FIG. 13A shows parallels in illuminance and color temperature change, and FIG. 13B is an example in which illuminance and color temperature change are not parallel.

On the other hand, if necessary, the light of the LED can be focused or dispersed mixed. That is, the substrate on which the main light source LED and the complementary color LED are provided may be provided with a spherical reflecting mirror and condensed appropriately. In addition, you may consider the lens structure of a front surface so that light from various LEDs may mix well as needed. By doing in this way, the light from various LEDs can be mixed uniformly.

In particular, in the case of a surgical lightless lamp, a high brightness illumination of 100,000 lux is required at the surgical site. As shown in FIG. 10, it is preferable to reflect the spherical reflection mirror 14 once and adjust it to a desired irradiation aperture. In Fig. 10, reference numeral 12 denotes an LED lamp and reference numeral 16 denotes an optical lens. Using Ilsan Chemical's NSCx190D white LEDs under development, roughness of 10 lux can be achieved with about 140 LEDs with a 20 cm diameter irradiation aperture and about 210 LEDs with a 25 cm diameter irradiation aperture. In addition, because of its long life, it provides conditions suitable for surgical operations.

Next, referring to Figures 2 and 3, a specific example of using the LED lamp according to the present invention as an auxiliary light source in a surgical lamp as follows.

Shadow lamps are often installed in the operating room as a surgical light. Therefore, it is preferable that the direction of irradiation can be easily changed because the auxiliary light source assists the lightless lighting. By using the above-mentioned white LED or the like, it is possible to provide an auxiliary light source that can easily change the irradiation direction. For example, as shown in FIG. 2, since an existing bar 11 exists at one end of the operating table 10, an LED auxiliary light source can be installed. Alternatively, as shown in FIG. 3, it can be provided at a handle portion protruding below the center of the existing lightless lamp 20.

The LED auxiliary light source device 30 embeds the LED light source 32 consisting of a plurality of LEDs at the front end of the flexible tube 31, while the battery is connected in series at the rear end of the LED voltage source 33 and the switch (4V). It is good to comprise SW and connect with the said LED light source 32. In the installation of the existing bar 11 or the handle portion of the operating table, an existing fixing mechanism such as staggering fixing or fixing to be installed may be employed. According to such an auxiliary light source, it is possible to assist a main light source such as a shadowless light and to improve the illuminance of a particularly necessary portion. In addition, since there is little fever, it does not interfere with the operation of the operator.

Referring to Figures 4 to 6, it will be described in more detail as follows.

A white LED having a color temperature of approximately 5000 ° K formed by combining a blue LED whose emission peak wavelength is adjusted to a blue region of about 450 to 460 nm and a YAG phosphor that is excited by the LED and whose fluorescence peak wavelength is adjusted to an yellowish green region of about 570 nm. Configure the LED (W).

Next, a first correction light source comprising a blue LED (B) having InGaN having an emission peak wavelength adjusted to a blue region of about 470 to 480 nm as an active layer, and AlInGaP having a peak wavelength adjusted to an orange region of about 590 nm as an active layer. Prepare a second correction light source made of orange LED Am.

As shown in FIG.4 and FIG.5, 31 said LEDs are arrange | positioned on a board | substrate. Center 16 and first circular columns 10, 11, 17, 22, 21, 15 and third circular columns 1, 2, 7, 13, 24, 29, 31, 30, 25, 19, 8, 3) White LEDs (W) for 17, 6 blue LEDs (B) for the second circular column, and 6 orange LEDs (Am) at the positions (4,6,18,28,26,14) Are alternately placed at positions 5, 12, 23, 27, 20, and 9, respectively.

As shown in Fig. 6, six LEDs (B) and six orange LEDs (Am) are connected to the LED lamps (41) by a DC power source so that illuminance can be adjusted through a fixed or variable resistor (44). White LED is connected with DC power (3.6 ~ 4.5V). The connection method may be changed depending on the power supply voltage. When the LED lamp 41 is attached to the front end head 43 of the flexible arm 42, an LED shadow lamp capable of color temperature adjustment is formed. In the case of using a halogen lamp of the conventional lampless lamp can be applied directly to the rear end of the front end head 43 to install a metal conductor.

Here, when only the white LED is turned on, white light having a color temperature of 5000 ° K is obtained, but color rendering is poor. By the way, when three to six orange LEDs are turned on, the color rendering property is improved and the color temperature is lowered to 3000 to 2500 ° K. On the other hand, when three to six blue LEDs are turned on by all the white LEDs, the color temperature is increased to 8000 ° K or more. However, since the color rendering cannot be improved in the blue LED, when two or three orange LEDs are lit, the color temperature decreases to around 8000 to 6000, but the color rendering is improved.

In this way, the color light emission of the main light source LED and the correction light source LED can be adjusted in the range of 3000 to 8000 Kelvin as a whole. When the orange LED is properly lit, the color rendering is improved, but the color temperature is lowered, so that the color temperature and the color rendering can be adjusted by balancing the lighting of the blue LED.

In the above embodiment, the main light source is set to the intermediate color temperature and the color temperature is adjusted to the low or high direction by the correction light source. However, the color temperature of the main light source is set to about 8000 ° K and the orange LED of about 590 nm is used as the correction light source. The color temperature may be adjusted in a lower direction. Further, the color temperature of the main light source may be set to about 3000 DEG K, and the color temperature may be adjusted in a high direction by using a blue LED of about 480 nm as a correction light source. In this case, you may make it adjust, adjusting the said orange color suitably by the color rendering degree.

Finally, the program in the case of adjusting the color temperature according to the surgical site is as follows.

(1st program)

Brain Surgery 8000K: Thoracic Surgery 6000K: Abdominal Surgery 5000K: Orthopedic 4000K

(Correction blue on-off) ← white → (compensation orange on-off)

(2nd program)

Brain Surgery 8000K: Thoracic Surgery 6000K: Abdominal Surgery 5000K: Orthopedic 4000K

(Complementary blue strong-weak) ← White → (Complementary orange strong-weak)

Initial setting Blue (strength 1) Yellow (strength 3) Orange (strength 2)

The first program shows a case where the color temperature is corrected with the blue LED and the orange LED using the white LED (5000 ° K) as the main light source, and the second program shows the white light source with the mixed color of the blue LED, the yellow LED, and the orange LED. To correct the color temperature by adjusting the intensity of blue or orange.

On the other hand, when light near 580 nm is removed from visible light, the color appears to have a high saturation. Therefore, a spectrum rising from the blue region 450 nm to the 550 nm yellow region and once descending and rising again beyond 600 nm can be formed.

On the other hand, in the color temperature setting of the shadowless lamp, by applying the remote control system shown in FIG. 12, if each scene is set, the desired color temperature and color rendering property can be easily realized.

According to the present invention, it is possible to adjust to white light emission of different color temperature by correcting white light emission by white LED or LED mixed color.

Therefore, when used in unscreened light, for example, the color temperature can be set in accordance with the brain surgery (8000K), thoracic surgery (6000K), abdominal surgery (5000K), orthopedic (4000K) and the surgical site. In addition, since orange is used as the correction color, the color rendering can be excellent.

In addition, the surgical person can perform the surgical operation at the desired color temperature, and furthermore, since there is almost no fever, an appropriate surgical environment can be formed.

In addition, by using LEDs that can adjust such color temperature, Correlated color temperature: 6700K Cool color (cool atmosphere, refreshing atmosphere), Correlated color temperature: 5000K Natural color (natural atmosphere), Correlated color temperature: 3000K Warm color (stable It is also possible to create a different atmosphere by changing the color temperature of the lighting in the same room.

On the other hand, this invention can be recommended also as a cosmetic LED etc. in which color temperature setting plays an important role. Even in this case, the necessary situation can be set for each scene, and the amount of auxiliary light source for the primary light source can be manually or automatically adjusted by a switch or a remote control operation, so that a color temperature of a desired place can be selected. It can be used easily as.

Claims (18)

A white LED light source adjusted to a predetermined intermediate color temperature X between a minimum color temperature Xmin (° K) and a maximum color temperature Xmax (° K) on a blackbody radiation line; A first correction LED light source having an emission spectrum in which a peak wavelength is located in a region near the intersection point L1 (nm) on the longer wavelength side of the chromaticity diagram that intersects the extension line connecting the lowest color temperature Xmin and the intermediate color temperature X; A second correction LED light source having an emission spectrum in which a peak wavelength is located in a region near the intersection point S1 (nm) on the shorter wavelength side of the chromaticity diagram that intersects the extension line connecting the highest color temperature Xmax and the intermediate color temperature X, The color temperature control of the white LED light source, the first compensation LED light source and the second compensation LED light source can be adjusted to a predetermined color temperature in the lowest color temperature direction or the highest color temperature direction. LEDs available. A main light source LED comprising a combination of an LED whose emission peak wavelength is adjusted to a blue region of 430 to 470 nm, and a YAG phosphor that is excited by the LED and whose fluorescence peak wavelength is adjusted to a yellowish green region of 530 to 570 nm; A first correction LED light source in which the emission peak wavelength is adjusted to a blue region of 430 to 470 nm; A second correction LED light source having a peak wavelength adjusted to an orange region of 590 to 630 nm, The color light can be adjusted LED color, characterized in that the overall emission color temperature can be adjusted in the range of 3000 ~ 8000 Kelvin by mixing the main light source LED, the first correction LED light source and the second correction LED light source. The method of claim 2, And the main light source LED is set such that the ratio of the YAG phosphor layer transmission spectral intensity of the light source LED and the YAG phosphor layer emission spectral intensity is from 2: 1 to 1: 4. A main light source LED comprising a combination of an LED whose luminescence peak wavelength is adjusted to a blue region of 430 to 470 nm, and a YAG phosphor that is excited by the LED and whose fluorescence peak wavelength is adjusted to a yellowish green region of 530 to 570 nm; Auxiliary light source LED is composed of a blue LED adjusted the emission peak wavelength to a blue region of 430 ~ 470nm, and an orange LED adjusted the peak wavelength to an orange region of 590 ~ 630nm, LEDs capable of adjusting the color temperature, characterized in that the overall emission color temperature can be adjusted in the range of 3000 to 8000 Kelvin by mixing of the main light source LED and the auxiliary light source LED in one direction or both directions. A white LED light source adjusted to a minimum color temperature Xlow (° K) on a blackbody radiation line; The emission spectrum in which the peak wavelength is located in the region near the intersection point S2 (nm) toward the shortest wavelength on the chromaticity diagram which intersects the extension line of the minimum color temperature Xlow and at least one desired color temperature X selected in the high temperature direction on the black body radiation line Made of a third correction LED light source having The color temperature adjustable LED light, characterized in that the set color temperature of the white LED light source can be adjusted in a higher color temperature direction by the mixing color ratio of the white LED light source and the third correction LED light source. A white LED light source adjusted to a maximum color temperature Xhigh (° K) on a blackbody radiation line; The emission spectrum at which the peak wavelength is located near the intersection L2 (nm) on the longer wavelength side of the chromaticity diagram which intersects the extension line between the highest color temperature Xhigh and the at least one desired color temperature X selected in the high temperature direction on the black body radiation line is shown. The branch consists of a fourth correction LED light source, The color temperature adjustable LED lamps, characterized in that the set color temperature of the white LED light source can be adjusted in a lower color temperature direction by the blending ratio of the white LED light source and the fourth compensation LED light source. A main light source LED comprising a combination of an LED whose emission peak wavelength is adjusted to a blue region of 430 to 470 nm, and a YAG phosphor which is excited by the LED and whose fluorescence peak wavelength is adjusted to a yellowish green region of 530 to 570 nm; At least one auxiliary LED that is suitably dispersed in the main LED group and whose emission peak wavelength is adjusted to an invisible region; It is excited by the auxiliary LED, and contains a fluorescent material that emits a fluorescence having a peak wavelength in the blue region of 430 ~ 490nm or a fluorescence having a peak wavelength in the orange to red region of 590 ~ 700nm, and comprises a filter covering the LED under, The color temperature adjustable LED etc. which can adjust the color temperature of the filter transmission wavelength in the range of 3000-8000 Kelvin by the mixture of the light emission from the said main light source LED and the fluorescent light emission from a filter. A main light source LED formed by combining an LED whose emission peak wavelength is adjusted to a blue region of 430 to 470 nm, and a YAG phosphor which is excited by the LED and whose fluorescence peak wavelength is adjusted to a yellowish green region of 530 to 570 nm; It consists of a color temperature conversion filter covering the LED, An LED lamp capable of color temperature adjustment, characterized in that the color filter of the emission wavelength can be adjusted in the range of 3000 to 8000 Kelvin by the conversion filter. A first blue LED whose emission peak wavelength is adjusted to a blue region of 430 to 470 nm, A second LED whose peak wavelength is adjusted to a yellow-green region of 530-570 nm, It consists of a third LED with a peak wavelength in the orange region of 595 ~ 630nm, The first LED and the third LED are distributed and disposed mainly in the second LED group, and the overall mixed color temperature is adjusted by adjusting the relative emission intensity of the first LED or the third LED with respect to the second LED. LED light with adjustable color temperature, characterized in that adjustable in the range of ~ 8000 Kelvin. The method of claim 9, The LED and the color temperature adjustable LEDs, characterized in that the first LED and the third LED in the second LED group is arranged as a whole dispersed in a ratio of 1 ± 1: 3: 2 ± 1. A main light source LED whose emission peak wavelength is adjusted to a blue region of 430 to 470 nm; An auxiliary LED suitably distributed in the main LED group and configured to adjust an emission peak wavelength in an invisible region; A YAG phosphor excited by the main LED and emitting fluorescence having a peak wavelength in the yellow-green region of 530-570 nm, and a phosphor emitting fluorescence having a peak wavelength in the blue region of 430-490 nm and 590 Containing a phosphor for emitting a fluorescence having a peak wavelength in the orange to red region of ~ 700nm, made of a filter covering the LED, An LED lamp capable of adjusting the color temperature, characterized in that the main light source LED intensity and the auxiliary LED intensity are adjusted so that the color temperature of the wavelength of the filter transmitted light can be adjusted in the range of 3000 to 8000 Kelvin by the filter. The method according to any one of claims 1 to 11, A metal conductor portion connected to the AC power source; A transformer connected to the metal conductor part and transforming alternating current; And a dimmer connected to the transformer and configured to supply a predetermined DC voltage to the main light source LED and the complementary color LED, respectively. The method according to any one of claims 1 to 11, A metal conductor portion connected to a direct current power source, such as a light shield; And a dimmer connected to the metal conductor part and connected to the transformer to supply a predetermined direct current voltage to the main light source LED and the complementary color LED, respectively. The method according to any one of claims 1 to 11, The substrate on which the main light source LED and the complementary color LED are provided has a spherical reflecting mirror on the front surface thereof to obtain white light without color unevenness due to mixed color of reflected light. The method according to any one of claims 1 to 11, An LED lamp system capable of color temperature adjustment, including a system for adjusting the amount of light of the auxiliary light source to the main light source by a switch or a remote control. The method according to any one of claims 1 to 11, An LED lightless system capable of color temperature adjustment, comprising a system for adjusting the amount of light of the auxiliary light source to the main light source by a switch or a remote controller and selecting an appropriate color temperature for the surgical site. The method according to any one of claims 1 to 11, A makeup lamp composed of LED lamps including a system for adjusting the amount of light of the auxiliary light source with respect to the main light source by a switch or a remote control and selecting a color temperature of a desired place. The method according to any one of claims 1 to 11, A living room interior light composed of LED lamps including a system for adjusting the amount of light to the auxiliary light source for the main light source by a switch or remote control operation, and selecting a color temperature of the desired atmosphere.