WO2013069381A1

WO2013069381A1 - Illuminating apparatus, control method, program, and recording medium

Info

Publication number: WO2013069381A1
Application number: PCT/JP2012/074298
Authority: WO
Inventors: 利明露久保; 青木　順一
Original assignee: シャープ株式会社
Priority date: 2011-11-11
Filing date: 2012-09-21
Publication date: 2013-05-16
Also published as: JP5189199B1; JP2013104752A

Abstract

An illuminating apparatus (10) is provided with: an illuminating unit, which outputs, from a light emitting surface (4), light that has been emitted from a plurality of warm color LEDs (1) and cold color LEDs (2); a mode switching unit (14), which performs switching of light emitting mode of the illuminating unit between illuminating mode and clock mode; and a control unit (15), which individually controls respective LEDs to turn on/off such that the LEDs emit light with predetermined luminance in the illuminating mode, and that a current time is displayed in the form of an analog clock in the clock mode.

Description

Lighting device, control method, program, and recording medium

The present invention relates to a lighting device provided with a plurality of light sources. It also relates to a method of controlling such a lighting device.

BACKGROUND In recent years, lighting devices provided with a plurality of light emitting diodes (LEDs) have been used. Moreover, the illuminating device which has functions other than illumination by controlling on-off of each LED separately is also known.

In Patent Document 1, a time display means arranged to display the time as a number and capable of visual recognition, and a display for switching and selecting the direction of the time display of the time display means in an optimal direction according to the user's viewpoint An LED luminaire is described which comprises a direction switching means.

Japanese Patent Publication "Japanese Patent Application Publication No. 2007-147378 (released on June 14, 2007)"

When checking the time when you wake up while sleeping at night, it is dark and you can not see the clock, and it takes a long time to check the time, which is a factor that prevents sleepiness of the sleeping person. In addition, since there is a disadvantage that the sleeper wakes up when the light is turned on and the time is confirmed, there is a demand for a watch that can easily check the time without turning on the light.

According to the technique of Patent Document 1, it is possible to confirm the time without excessively disturbing the sleep of the sleeping person.

However, in the technology of Patent Document 1, in addition to the parts for exhibiting the function as the lighting device, the time display means, the parts for switching and selecting the time display means in the optimum direction, the parts for segment display, etc. Is required separately, and there is a problem that cost increases.

This invention is made in view of the said subject, and makes it a main purpose to provide the illuminating device provided with the timepiece function, suppressing cost increase.

In order to solve the above-mentioned subject, the lighting installation concerning the present invention is provided with a plurality of light sources, and the lighting unit which emits the light from the light source concerned from the light emitting surface, and the light emission mode of the lighting unit Between an illumination mode that causes the light source to emit light so as to obtain a predetermined brightness, and a clock mode that causes the light source to emit light so that the time represented by a set of emitted light sources can be visibly displayed. Mode switching means for switching between the light emitting mode and the light emitting mode so as to obtain a predetermined lightness when the light emitting mode is the illumination mode, and when the light emitting mode is the clock mode, based on time information representing the current time And control means for individually controlling on / off of the plurality of light sources so as to display the current time as an analog clock.

According to the above configuration, the illumination device according to the present invention can be used as both an illumination application and a watch application by switching the light emission mode of the illumination unit including a plurality of light sources between the illumination mode and the watch mode. And since time display is carried out using a light source used for lighting applications and also used for watch applications, it is possible to suppress cost increase without requiring a separate display means for watch display.

Further, a control method of a lighting device according to the present invention is a control method of a lighting device including a lighting unit having a plurality of light sources and emitting light from the light source from a light emitting surface, and a light emission mode of the lighting unit The light source emits light such that an illumination mode for causing the light source to emit light so as to obtain a predetermined brightness from the light emitting surface and a time represented by a set of emitted light sources can be displayed on the light emitting surface visibly The light source to emit light so as to obtain a predetermined brightness when the light emission mode is the illumination mode, and when the light emission mode is the clock mode, the current time is set. And a control step of individually controlling on / off of the plurality of light sources so as to display the current time on an analog clock based on the time information to be expressed.

According to the above control method, the same effect as that of the above-described lighting device can be obtained.

Further, a program for operating a computer as each means included in the lighting device, and a computer readable recording medium recording such a program are included in the scope of the present invention.

An illumination device according to the present invention includes a plurality of light sources, and an illumination unit configured to emit light from the light source from a light emission surface, and the light emission mode of the illumination unit so as to obtain predetermined brightness from the light emission surface. Mode switching means for switching between an illumination mode in which the light source emits light and a clock mode in which the light source emits light so that the time represented by the set of the emitted light sources can be visibly displayed on the light emitting surface; When the mode is an illumination mode, the light source is caused to emit light so as to obtain a predetermined brightness, and when the light emission mode is a clock mode, an analog clock is displayed based on time information indicating the current time. In addition, since the control means for individually controlling the on / off of the plurality of light sources is provided, it is possible to provide a lighting device having a clock function while suppressing cost increase. A.

It is a front view of a lighting installation concerning one embodiment of the present invention. It is a block diagram showing composition of a lighting installation concerning one embodiment of the present invention. The illuminating device which concerns on one Embodiment of this invention WHEREIN: It is the schematic which shows the light emission state at the time of clock display. The illuminating device which concerns on one Embodiment of this invention WHEREIN: It is a figure which shows an example of a timepiece display. The illuminating device which concerns on one Embodiment of this invention WHEREIN: It is a figure which shows an example of a timepiece display. The illuminating device which concerns on one Embodiment of this invention WHEREIN: It is a figure which shows an example of a timepiece display.

[Lighting device 10]
Hereinafter, embodiments of the present invention will be described in detail. First, with reference to FIG. 1 and 2, the illuminating device which concerns on this embodiment is demonstrated. FIG. 1 is a front view of a lighting apparatus 10 according to an embodiment of the present invention, and FIG. 2 is a block diagram showing a configuration of the lighting apparatus according to an embodiment of the present invention.

As shown in FIG. 1, the lighting device 10 includes a warm color LED (light source) 1, a cold color LED (light source) 2, and a light emitting surface 4. Moreover, the illuminating device 10 may further be provided with the night-light LED (all-night light source) 3, the LED board 6, the time scale display unit 7, and the magnifying lens units (magnifying units) 8a and 8b. The lighting apparatus 10 can be used as a lighting and a clock by switching its light emission mode between the lighting mode and the clock mode.

The illuminating device 10 is provided with several warm color LED1 and cold color LED2 as a light source. A lighting unit is configured by the warm color LED 1 and the cold color LED 2 and the light emitting surface 4 that emits the light from the warm color LED 1 and the cold color LED 2. In the lighting device 10, light emitting diodes emitting various visible light rays are used in combination, and light emitting surface 4 can be configured to obtain light of desired brightness, saturation, and hue by combining light of different colors. Can. For example, when using the illuminating device 10 for illumination applications, it is preferable that various light emitting diodes are provided such that white light is emitted from the light emitting surface 4. In the present embodiment, the warm color LED 1 for emitting warm color light and the cold color LED 2 for emitting cold color light are used in combination.

A plurality of warm LEDs 1 and cold LEDs 2 are provided on the light emitting surface 4 in a state of being arranged on the LED substrate 6. Further, as shown in FIG. 2, the warm LEDs 1 and the cold LEDs 2 arranged on the LED substrate 6 may be arranged radially from the center of the light emitting surface 4 along the light emitting surface 4. Thereby, uniform light emission from the light emitting surface 4 is possible.

Further, in the light emitting surface 4, an all-night light LED 3 is provided at an end portion of each of the LED substrates 6 provided so as to be arranged radially from the center of the light emitting surface 4. That is, the all-night light LED 3 is provided in each row of the warm color LED 1 and the cold color LED 2 arranged on the LED substrate 6.

The warm LED 1 is intended as a long wavelength light emitting diode emitting light in the wavelength range 571 nm to 750 nm, and the cold LED 2 is intended as a short wavelength light emitting diode emitting light in the wavelength range 380 nm to 570 nm.
[Configuration of Lighting Device 10]
Next, the configuration of the lighting device 10 will be described with reference to FIG. The lighting apparatus 10 includes a mode switching unit (mode switching unit) 14 and a control unit (control unit) 15. The lighting apparatus 10 may also include a power supply 11, a DC power supply circuit 12, a clock generation unit 13, a driver group 16, and a light emitting diode element group 17. The driver group 16 includes drivers 20 to 20 n corresponding to the respective LED substrates 6, and the drivers 20 to 20 n include night light drivers 21 to 21 n, warm color drivers 22 to 22 n, and cold color drivers 23 to 23 n, respectively. Is equipped. Here, n represents a natural number, and it is intended that the driver 20 is provided for each row in which the warm LEDs 1 and the cold LEDs 2 provided on the light emitting surface 4 are arrayed, that is, for each LED substrate 6. Therefore, when there are 12 rows of the warm color LEDs 1 and the cold color LEDs 2, that is, when 12 pieces of the LED substrates 6 are provided, n = 12 and 12 drivers 20 are provided.

The AC power from the power supply 11 is converted to DC power in the DC power supply circuit 12 and supplied to the control unit 15 and the driver group 16. The driver group 16 controls the amount of current supplied to the light emitting diode element group 17, supplies current to a specific light emitting diode element as necessary, and stops the current supply to a specific light emitting diode element. Thus, the light emission and the light emission of the light emitting diode element are switched.

The clock generation unit 13 generates a clock signal and transmits the clock signal to the control unit 15. The clock generation unit 13 may be configured by a conventionally known clock generation circuit. The control unit 15 having received the clock signal from the clock generation unit 13 generates time information representing the current time based on the clock signal.

The mode switching unit 14 displays the light emission mode of the lighting unit, an illumination mode in which the warm color LED 1 and the cold color LED 2 emit light so as to obtain predetermined brightness from the light emitting surface, and a time represented by a set of the warm color LED 1 and the cold color LED 2 To be displayed on the light emitting surface 4 in a visible manner, switching between the watch mode in which the warm color LED 1 and the cold color LED 2 emit light.

Switching of the light emission mode by the mode switching unit 14 may be performed based on switching input from the user using a remote controller or the like, or automatically switched to a predetermined time or the like based on a predetermined switching condition. It may be like that. When switching the light emission mode based on the switching input from the user, the remote control light receiving unit (not shown) is further provided, and when automatically switching the light emission mode at a predetermined time, a memory for recording the switching condition ( (Not shown) may further be provided.

The mode switching unit 14 transmits, to the control unit 15, a switching signal indicating that the light emission mode has been switched. The control unit 15 having received the switching signal from the mode switching unit 14 controls the drivers 20 to 20 n of the driver group 16 so that a predetermined brightness can be obtained from the light emitting surface 4 when the switched light emission mode is the illumination mode. Thus, the corresponding light emitting diode element group emits light. Here, the predetermined lightness is intended as a lightness previously programmed as the lightness obtained from the light emitting surface 4 in the illumination mode.

When the light emission mode is the illumination mode, the control unit 15 may cause the drivers 20 to 20 n to emit light of all the warm LEDs 1, cold LED 2 and nightlight LED 3 on the light emitting surface 4. Only warm LED 1 or only cold LED 2 You may make it light-emit. When the light emission mode is the illumination mode, as long as a predetermined brightness is obtained from the light emitting surface 4, the type and number of LEDs to be emitted are not particularly limited.

Further, when the switched light emission mode is the clock mode, the control unit 15 generates time information representing the current time based on the clock signal received from the clock generation unit 13, and the current time based on the time information. Are controlled individually by the respective drivers 20 to 20 n of the driver group 16 so as to display an analog clock.

The warm color drivers 22 to 22 n included in the drivers 20 to 20 n of the driver group 16 cause the warm color LEDs 1 disposed on the corresponding LED substrates 6 to emit light, and the cold color drivers 23 to 23 n The respective drivers 20 to 20 n cause the cold LEDs 2 disposed on the corresponding LED substrates 6 to emit light. That is, warm color drivers 22 to 22 n and cold color drivers 23 to 23 n are provided on the warm color LED 1 and the cold color LED 2 respectively on the LED substrate 6.

Therefore, the control unit 15 may drive only the driver 20 for causing the warm LED 1 and the cold LED 2 to emit light on the LED substrate 6 corresponding to the row to be emitted on the light emitting surface 4. That is, when the light emission mode is the clock mode, the driver 20 for emitting the warm LED 1 and the cold LED 2 on the LED substrate 6 corresponding to the row corresponding to the hour hand and the row corresponding to the minute hand may be driven.

The control unit 15 controls the light emission of the night-light LED 3 provided on the light-emitting surface 4 by controlling the driving of the night-light drivers 21 to 21 n included in each of the drivers 20 to 20 n according to a program incorporated in advance.

The light output of the light emitting diode element group 17 may be made different by controlling the amount of current supplied to the light emitting diode element group 17 when the light emission mode is the illumination mode and when it is the clock mode. Thereby, for example, by reducing the amount of current supplied to the light emitting diode element group 17 in the clock mode as compared to the case of the illumination mode, the light output from the light emitting diode element group 17 is weakened to reduce glare. It can be suppressed.

Here, as shown in FIG. 1, twelve LED substrates 6 in which the warm LEDs 1 and the cold LEDs 2 are arranged are provided radially from the center of the light emitting surface 4. That is, since each LED board 6 is provided at a position corresponding to one division of the time of the 12 divided analog clocks, it is possible to easily display an analog clock by controlling the LED boards 6 to be made to emit light. .

When the light emission mode of the illumination device 10 is a clock mode and is used as a clock, the warm color LED 1 and the cold color LED 2 are caused to emit light so that the current time is displayed as an analog clock based on time information indicating the current time. That is, the warm LEDs 1 and the cold LEDs 2 arranged on the LED substrates 6 in the rows corresponding to the hour hand and the minute hand representing the current time are caused to emit light. That is, in the lighting device 10, the hour hand and the minute hand of the analog clock are represented by the emitted warm color LED 1 and cold color LED 2, and the present time is displayed. In each of the LED substrates 6, only the warm LED 1 may emit light, or only the cold LED 2 may emit light.

The arrangement of the warm LEDs 1 and the cold LEDs 2 on the LED substrate 6 is not particularly limited. For example, they may be alternately disposed or may be disposed alternately. In addition, the number of the warm color LED 1 and the cold color LED 2 disposed on the LED substrate 6 is not particularly limited, and a desired brightness can be obtained when the light emission mode is the illumination mode, and the watch is suitably watched when the light emission mode is the clock mode It may be any number that can be displayed. For example, if about 120 warm color LEDs 1 and cold color LEDs 2 are provided as the whole light emitting surface 4, although depending on the performance of the LED itself, sufficient brightness as illumination can be obtained, which is preferable.

The nightlight 3 always emits light when the light emission mode is the clock mode. When the light emission mode is the illumination mode, the all-night light LED 3 may emit light as well as other LEDs, or may be turned off. When the light emission mode is the clock mode, since the nightlight LED 3 provided at the end of each LED board 6 always emits light, the current time displayed on the analog clock is indicated by using the nightlight LED 3 as a mark. It is possible to confirm easily.

In addition, as shown in FIG. 1, the night-light LED 3 has ten LED boards 6 other than the two LED boards 6 on which the time scale display unit 7 and the magnifying

lens parts

8 a and 8 b are installed at the end. 10 pieces may be installed adjacent to. Thereby, it can be easily confirmed that the position of the all-night light LED 3 is one division of the time divided into 12 on the analog clock display. Further, instead of the time scale display unit 7 and the magnifying

lens units

8a and 8b, the nightlight LEDs 3 may be installed at the end portions of all the LED substrates 6, and the number of the nightlight LEDs 3 may be twelve.

Furthermore, for example, six nightlight LEDs 3 may be provided on the outer periphery of the light emitting surface 4 at equal intervals, and two hours may be provided between adjacent nightlight LEDs 3. In addition, although nightlight LED3 can be comprised with the light emitting diode element similar to warm color LED1 or cold color LED2, it is comprised by LED with lower lightness so that it may not disturb night sleep by always emitting light. It is preferable to do.

The time scale display unit 7 may be provided at the end of a specific row of the LED substrates 6 radially arranged and at the end of the row opposed to the row across the center of the light emitting surface 4. That is, for example, the time scale display unit 7 is provided at the end of the LED substrate 6 at a position representing 12 o'clock and the end of the position representing 6 o'clock. Thereby, the time can be easily confirmed on the basis of the time scale display unit 7. Moreover, when installing the illuminating device 10 on a ceiling etc., it can install for visual recognition easily by installing on the time scale display part 7 as a reference.

The form of the time scale display unit 7 is not particularly limited as long as it can indicate the reference position of the time display, and as shown in FIG. As shown, a plurality of LEDs may be combined. When a display board capable of number display is used as the time scale display unit 7, a plate-shaped body in which a slit representing a number is formed may be superimposed on the LED, and the number may be displayed by light leaking from the slit.

On the time scale display unit 7, magnifying

lens portions

8a and 8b for enlarging and displaying the time scale display unit 7 are disposed, respectively. Therefore, when the time scale display unit 7 is viewed from the light emitting surface 4, the time scale display unit 7 is enlarged and displayed, and even if the time scale display unit 7 is small, it can be easily confirmed. Therefore, the current time can be easily confirmed on the basis of the time scale display unit.

[Form of time display]
Next, with reference to FIGS. 3 to 6, an example of a display form of time display by the lighting apparatus 10 will be described. FIG. 3 is a schematic view showing a light emission state at the time of clock display in the illumination device 10, and FIGS. 4 to 6 are views showing an example of clock display in the illumination device 10. As shown in FIG.

As shown in FIG. 3, when the light emission mode of the illumination unit is a clock mode and the current time is 1:00, the light emitting surface 4 is divided into 12 divisions on the LED substrate 6 at a position corresponding to the hour hand pointing to 1 The warm color LED 1 and the warm color LED 1 on the LED substrate 6 at the position corresponding to the minute hand pointing to 12 of the scale obtained by dividing the light emitting surface 4 into 12 emit light. In addition, in FIG. 3, LED board 6 which is not concerned in the display of the present time, and cold-colored LED2 which is not made to light-emit are abbreviate | omitted.

In addition, as shown in FIG. 4, when representing 1 o'clock by analog clock display, warm LED 1 and cold LED 2 on LED substrate 6 at a position corresponding to the hour hand pointing to the hour hand of 12 divisions of light emitting surface 4 divided The warm color LED 1 and the cold color LED 2 on the LED substrate 6 are caused to emit light at a position corresponding to the minute hand pointing to 12 of the scale obtained by dividing the surface 4 into 12 parts.

Then, as shown in FIG. 5, when 3 o'clock is represented by an analog clock display, warm LED 1 and cold LED 2 on the LED substrate 6 at a position corresponding to the hour hand pointing to 3 of the division divided the light emitting surface 4 by 12 The warm color LED 1 and the cold color LED 2 on the LED substrate 6 are caused to emit light at a position corresponding to the minute hand pointing to 12 of the scale obtained by dividing the surface 4 into 12 parts.

Further, as shown in FIG. 6, when representing 5 o'clock by analog clock display, warm LED 1 and cold LED 2 on LED board 6 at a position corresponding to the hour hand pointing to 5 of the scale divided 12 by light emitting surface 4 The warm color LED 1 and the cold color LED 2 on the LED substrate 6 are caused to emit light at a position corresponding to the minute hand pointing to 12 of the scale obtained by dividing the surface 4 into 12 parts.

In addition, in the lighting device 10, when representing 1 o'clock by an analog clock display, the warm color LED 1 on the LED substrate 6 of the row corresponding to the hour hand and the minute hand indicating 1 o'clock is made to emit light. The LED 2 may be made to emit light. That is, the time may be confirmed from the difference in color by emitting light with different colors in the row corresponding to the hour hand and the short hand representing the current time and the other row.

Furthermore, the warm LEDs 1 on the LED substrates 6 in the row corresponding to the hour hand representing the current time may be emitted, and the cold LEDs 2 on the LED substrates 6 in the row corresponding to the minute hand may be emitted. As a result, since it is possible to clearly distinguish the hour hand and the minute hand by emitting light in different colors in the row corresponding to the hour hand and the row corresponding to the minute hand, the current time can be checked more easily. Can.

Further, the hour hand and the minute hand may be distinguished by displaying so that the minute hand looks longer than the hour hand. For example, by causing the warm LEDs 1 of the row corresponding to the minute hand to emit light more than the warm LEDs 1 of the row corresponding to the hour hand, it can be displayed so that the minute hand is visible longer than the hour hand.

Furthermore, the current time may be represented only by the night light LED 3 by lighting only the night light LED 3 provided at the end of the row corresponding to the hour hand and the minute hand representing the current time and turning off the other night light LED 3.

As described above, when the lighting device 10 displays the current time by analog clock display, the warm LED 1 and the cold LED 2 on the LED board 6 corresponding to the position of the minute hand always emit light and the LED board corresponding to the position of the hour hand Change 6 This makes it possible to display time in units of time. In addition, it is also possible to display the time of a minute unit by providing 60 LED board 6 radially on the light emission surface 4 and controlling it similarly.

As described above, according to the lighting device 10, the light emitting mode of the plurality of warm LEDs 1 and the cold LEDs 2 can be used as both lighting applications and watch applications by switching between the lighting mode and the watch mode. And since time display is performed using warm color LED 1 and cold color LED 2 used for lighting applications and also used for watch applications, a separate display means is not required for watch display, and the clock function is suppressed while suppressing cost increase. An illumination device provided can be provided.

(Additional items)
The control unit 15 and the mode switching unit 14 included in the lighting device 10 described above may be realized in hardware by a logic circuit formed on an integrated circuit (IC chip), or use a CPU (Central Processing Unit) It may be realized as software.

In the latter case, the device executes a program instruction for realizing each function, a ROM (Read Only Memory) storing the program, a RAM (Random Access Memory) expanding the program, the program and various data. And a storage device (recording medium) such as a memory for storing the An object of the present invention is to provide a recording medium in which the program code (the executable program, the intermediate code program, the source program) of the control program of each device, which is software that realizes the functions described above This can also be achieved by supplying the device and the computer (or CPU or MPU) reading out and executing the program code stored in the storage medium.

Examples of the recording medium include tapes such as magnetic tapes and cassette tapes, magnetic disks such as floppy (registered trademark) disks / hard disks, and disks including optical disks such as CD-ROM / MO / MD / DVD / CD-R. , Cards such as IC cards (including memory cards) / optical cards, semiconductor memories such as mask ROM / EPROM / EEPROM (registered trademark) / flash ROM, or PLD (programmable logic device) or FPGA (field programmable gate) Logic circuits such as Array) can be used.

Further, each device may be configured to be connectable to a communication network, and the program code may be supplied via the communication network. This communication network is not particularly limited as long as the program code can be transmitted. For example, the Internet, intranet, extranet, LAN, ISDN, VAN, CATV communication network, Virtual Private Network, telephone network, mobile communication network, satellite communication network, etc. can be used. Also, the transmission medium that constitutes this communication network may be any medium that can transmit the program code, and is not limited to a specific configuration or type. For example, even if wired such as IEEE 1394, USB, power line carrier, cable TV line, telephone line, ADSL (Asymmetric Digital Subscriber Line) line, infrared such as IrDA or remote control, Bluetooth (registered trademark), IEEE 802.11 wireless, HDR ( It can also be used wirelessly such as High Data Rate), Near Field Communication (NFC), Digital Living Network Alliance (DLNA), mobile phone network, satellite link, terrestrial digital network and the like.

The present invention is not limited to the embodiments described above, and various modifications can be made within the scope of the claims, and embodiments obtained by appropriately combining the technical means disclosed herein are also disclosed. It is included in the technical scope. Also, all of the documents described in the present specification are incorporated by reference.

<Summary>
As described above, the illumination device according to the present invention includes a plurality of light sources, and an illumination unit that emits light from the light source from the light emission surface, a light emission mode of the illumination unit, and a predetermined brightness from the light emission surface Mode switching to be performed between an illumination mode in which the light source emits light and a clock mode in which the light source emits light so that the time represented by a set of the emitted light sources can be visibly displayed on the light emitting surface Means for causing the light source to emit light so as to obtain a predetermined lightness when the light emission mode is the illumination mode, and when the light emission mode is the clock mode, the current time is determined based on time information representing the current time A control means is provided to individually control on / off of the plurality of light sources so as to display an analog clock.

In the lighting device according to one aspect of the present invention, the light sources are arranged radially from the center of the light emitting surface along the light emitting surface, and the control unit is configured to set the light emission mode to a clock mode. In some cases, it is preferable to cause the light sources of the rows corresponding to the hour hand and the minute hand to indicate the current time by means of an analog clock display.

According to the above configuration, light with less unevenness is emitted from the light emitting surface, and illumination with less unevenness can be obtained. In addition, since the light sources are arranged radially from the center of the light emitting surface, a row of radial light sources is formed from the central portion toward the peripheral portion of the light emitting surface. Therefore, the light source row can be made to correspond to the hour hand and the minute hand of the analog clock display, and can be used for the analog clock display of the current time.

In the lighting device according to one aspect of the present invention, the light source is a light emitting diode, and each row in which the light source is radially arranged includes a short wavelength light emitting diode emitting light in a wavelength range of 380 nm to 570 nm; It is preferable that a long wavelength light emitting diode which emits light of 750 nm is provided.

According to the above configuration, since the short wavelength light emitting diode that emits cold color light and the long wavelength light emitting diode that emits warm color light are used in combination, the light emission of each light source is controlled. Thus, desired light can be emitted from the light emitting surface.

In the lighting device according to one aspect of the present invention, the control means may set the short wavelength so that the wavelength range of the light emitting diode emitting light is different between a specific row and the other row of the light sources arranged radially. Preferably, the light emission of the light emitting diode and the light emission of the long wavelength light emitting diode are switched.

According to the above configuration, it is possible to make the light emission color in one particular line different from the light emission color in the other lines. For example, when the light emission mode is the clock mode, only the line corresponding to the 12 o'clock position It is possible to facilitate time confirmation by representing the light emission color different from the other columns.

In the lighting device according to one aspect of the present invention, it is preferable that each row in which the light sources are radially arranged further includes an all-night light source that emits light constantly when the light emission mode is a clock mode. Thus, by using the light source as a mark all night, it becomes possible to easily confirm the current time when the analog clock is displayed by the light emission of the light source.

The illumination device according to an aspect of the present invention is a position serving as a reference for time display of a specific row of the light sources arranged radially and a row facing the row across the center of the light emitting surface. It is preferable to further have a time scale display unit indicating that. Thus, for example, when the light emission mode is the clock mode, it is possible to easily check the time by setting the rows corresponding to the 12 o'clock and 6 o'clock positions as the row provided with the time scale display unit. is there. Moreover, when installing an illuminating device, it can install so that visual recognition is easy by installing on a time scale display part as a reference | standard.

In the lighting device according to one aspect of the present invention, it is preferable to further include an enlargement unit that displays the time scale display unit in an enlarged manner. Thereby, even if the time scale display unit is small, it can be easily confirmed. Therefore, the current time can be easily confirmed on the basis of the time scale display unit.

The lighting device according to one aspect of the present invention preferably further includes a clock generation unit that generates a clock signal, and the control unit preferably generates the control signal based on the clock signal. Thus, it is possible to cause the light source to emit light so that the control unit causes the analog clock to display the current time based on the time information acquired from the clock generation unit.

The present invention is applicable to various lighting applications.

1 Warm color LED (light source)
2 cold color LED (light source)
3 night light LED (night light source)
4 light emitting surface 6 LED substrate 7 time

scale display portion

8a, 8b magnifying lens portion (magnifying portion)
DESCRIPTION OF SYMBOLS 10 lighting apparatus 11 power supply 12 DC power supply circuit 13 clock generation part 14 mode switching part (mode switching means)
15 Control unit (control means)
16 Driver Group 17 Light Emitting Diode Element Group 20-20n Driver 21-21n Nightlight Driver 22-22n Warm Color Driver 23-23n Cold Color Driver

Claims

An illumination unit comprising a plurality of light sources and emitting light from the light source from the light emitting surface, an illumination mode for emitting light from the light source so as to obtain predetermined brightness from the light emitting surface, and light emission mode Mode switching means for switching between a clock mode in which the light source is caused to emit light so that the time represented by the set of light sources can be visibly displayed on the light emitting surface;
When the light emission mode is an illumination mode, the light source is caused to emit light so as to obtain a predetermined lightness, and when the light emission mode is a clock mode, an analog clock is displayed based on time information representing the current time. And control means for individually controlling on / off of the plurality of light sources.
The light sources are arranged radially from the center of the light emitting surface along the light emitting surface,
The lighting device according to claim 1, wherein the control means causes the light sources of the rows corresponding to an hour hand and a minute hand representing the current time to be displayed by an analog clock display when the light emission mode is a clock mode.
The light source is a light emitting diode, and in each row in which the light source is arranged radially, a short wavelength light emitting diode emitting light in a wavelength range of 380 nm to 570 nm and a long wavelength light emitting diode emitting light in a wavelength range of 571 to 750 nm The lighting device according to claim 2, wherein each of the lighting devices is provided.
The control means is configured to emit light from the short wavelength light emitting diode and the long wavelength light emitting diode such that the wavelength ranges of the light emitting diodes that emit light are different in one particular line and the other line among the light sources arranged radially. The lighting device according to claim 3, which switches between light emission and light emission.
The night light source according to any one of claims 2 to 4, further comprising: an all-night light source that emits light constantly when the light emission mode is a clock mode, in each row in which the light sources are arranged radially. Lighting device.
The light source further includes a time scale display unit, which indicates a position serving as a reference for time display, in a specific row of the light sources arranged radially and in a row opposite to the row across the center of the light emitting surface. The lighting device according to any one of claims 2 to 5, characterized in that:
The lighting device according to claim 6, further comprising an enlargement unit for enlarging and displaying the time scale display unit.
It further comprises a clock generation unit that generates a clock signal,
The lighting device according to any one of claims 1 to 7, wherein the control means generates the time information based on the clock signal.
A control method of an illumination apparatus comprising: an illumination unit having a plurality of light sources and emitting light from the light sources from a light emitting surface,
The light emission mode of the illumination unit is displayed on the light emission surface so that the time represented by the illumination mode for causing the light source to emit light so as to obtain a predetermined brightness from the light emission surface and the time represented by the set of light sources emitting light A mode switching step of switching between a clock mode in which the light source emits light;
When the light emission mode is an illumination mode, the light source is caused to emit light so as to obtain a predetermined lightness, and when the light emission mode is a clock mode, an analog clock is displayed based on time information representing the current time. A control step of individually controlling on / off of the plurality of light sources.
The program for operating a computer as each means with which the illuminating device in any one of Claims 1-8 is equipped.
A computer readable recording medium storing the program according to claim 10.