JP2003257679A - Illumination system - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination system to be controlled interlockingly with infrared signals which does not cause the user to have any sense of incompatibility or unnaturalness by improving the responsiveness to a change in the illuminance. <P>SOLUTION: The illumination system is composed of a first fluorescent lighting fixture consisting of a plurality of fluorescent lighting fixtures and equipped at least with an infrared signal transmitter and illuminance sensor and one or more second fluorescent lighting fixture furnished with an infrared signal receiver and transmitter, in which the first fluorescent lighting fixture calculates the dimming ratio on the basis of the information given by the illuminance sensor, sends the result to the second fluorescent lighting fixture(s) in the form of infrared signals, and thereby controls the dimming conditions of all lighting fixtures, wherein the sending time zones for infrared signals are allocated to the first and second lighting fixtures, and the data sampling interval of the illuminance sensor is set to the time obtained as the sum of the total time required for the lighting fixtures to transmit the infrared signals and the dimming ratio changing time based on the dimming ratio calculated by the first lighting fixture. <P>COPYRIGHT: (C)2003,JPO

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to a lighting system, and more particularly, to a lighting system that interlocks and controls a plurality of fluorescent lamp fixtures by using an infrared signal.

[0002]

2. Description of the Related Art As a lighting system for interlocking control of a plurality of fluorescent lamp fixtures, there are various technologies in the related art, for example, a lighting system shown in FIG. 9 has been proposed. In FIG. 9, 1a to 1d are fluorescent lamp fixtures, and are shown as a system of four fluorescent lamp fixtures in the figure. Reference numerals 9 to 12 are infrared signals output from the fluorescent lamp fixtures 1a to 1d, and 13 is a floor surface. Further, FIG. 10 is a block diagram showing the configuration of the fluorescent lamp fixture 1a that constitutes the illumination system shown in FIG. In FIG. 10, 2 is a fluorescent lamp, 3 is a lighting device, and an infrared receiver 4, an infrared transmitter 5, an illuminance sensor 6 for detecting the illuminance of the floor surface 13, an infrared transmission / reception process and the illuminance sensor 6 are provided. The control unit 7 drives the inverter 8 according to information and controls lighting and dimming of the fluorescent lamp 2. The control unit 7 includes a number for identifying the fluorescent lamp and a fluorescent lamp that constitutes an illumination system. An address number storage unit for storing the number of vehicles is provided. FIG. 11 shows a block diagram of the fluorescent lamp fixtures 1b to 1d shown in FIG. Incidentally, FIG.
In FIG. 10, the same or corresponding parts as those in FIG. As shown in FIG. 11, the configuration of the fluorescent lamp fixtures 1b to 1d differs from the configuration of the fluorescent lamp fixture 1a shown in FIG. 10 only in that the illuminance sensor 6 is not mounted.

Regarding the operation of the illumination system configured as described above, referring to FIGS. 9 and 12 showing the infrared signal communication method and FIG. 13 showing the illuminance data sampling interval. explain. First, fluorescent light fixture 1
In order to control the dimming of the fluorescent lamp fixtures 1a to 1d so that a has a preset target illuminance, the illuminance sensor 6 detects the illuminance of the floor surface 13, and the other fluorescent lamp fixtures 1a to 1d.
The infrared transmitter 5 uses a control signal including a command dimming rate signal for dimming control of b to 1d as an infrared signal 9.
Send from At the same time, the dimming control of its own fluorescent lamp 2 is performed. Then, the infrared signal 9 from the fluorescent lamp fixture 1a is reflected on the floor surface 13 and is received by the infrared receiver 4 of the adjacent fluorescent lamp fixture 1b. Fluorescent light fixture 1b
Performs dimming control of its own fluorescent lamp 2 so that the command dimming rate included in the received infrared signal 9 is achieved, and transmits an infrared signal 10 similar to the infrared signal 9 received from the infrared transmitter 5. .

Next, the infrared signal 10 transmitted from the fluorescent lamp fixture 1b is similarly reflected by the floor surface 13 and received by the infrared receiver 4 of the adjacent fluorescent lamp fixture 1c. The fluorescent lamp fixture 1c performs dimming control of its own fluorescent lamp 2 so that the command dimming rate included in the received infrared signal 10 is achieved, and an infrared signal similar to the infrared signal 10 received from the infrared transmitter 5 is received. 11 is transmitted. Similarly, the command dimming rate signal from the fluorescent light fixture 1a is transmitted to the fluorescent light fixture 1d in the same manner, and the fluorescent lamp 2 is adjusted so that the fluorescent light fixtures 1a to 1d constituting the lighting system have a target illuminance. Light control is performed.

As described above, in the conventional example, when a plurality of adjacent fluorescent lamp fixtures receive an infrared signal from the fluorescent lamp fixture 1a, it plays a role of relaying the infrared signal received by each adjacent fluorescent lamp fixture. Therefore, it is necessary to transmit an infrared signal similar to the received infrared signal. At this time,
For example, if a plurality of fluorescent lamp fixtures simultaneously receive an infrared signal, all the received fluorescent lamp fixtures will transmit an infrared signal, resulting in collision of infrared signals. In order to avoid the disappearance of the control signal due to the collision of the infrared signals, as shown in FIG. 12, the address number for identifying the fluorescent lamp fixture, which is set in advance in the fluorescent lamp fixtures 1a to 1d, for example, 1
.About.4 are given to determine the transmission order of the infrared signals, and when the infrared signals are transmitted, the infrared signals are transmitted in the order associated with the address number to avoid collision of the infrared signals.

In the above illumination system, when four fluorescent lamp fixtures are used as shown in FIG. 9, the sampling interval of the illuminance data of the illuminance sensor 6 mounted on the fluorescent lamp fixture 1a is as shown in FIG. After the fluorescent lamp fixture 1a transmits the infrared signal 9, the fluorescent lamp fixture 1d transmits the infrared signal 12
The sampling interval is determined by adding the time until the dimming control of the fluorescent lamp fixture 1d is added to the communication time until the transmission of. When these fluorescent lamps change the dimming rate, it is necessary to change the dimming rate at a rate of, for example, 2% / sec so that the user does not feel the change in the light output. There is. The time when the dimming control of the fluorescent lamp fixture 1d ends (hereinafter referred to as the dimming ratio change time) is determined by the maximum value of the dimming ratio change commanded by the fluorescent lamp fixture 1a equipped with the illuminance sensor 6. . For example, if the maximum value of the dimming rate change commanded by the fluorescent lamp fixture 1a is 20%, the time required for each fluorescent lamp fixture to change the dimming ratio by 20% is 10 seconds. That is, the sampling interval of the illuminance data is a fixed time of communication time +10 seconds for the fluorescent lamp fixtures 1a to 1d.

[0007]

As described above, in the conventional lighting system, the interval at which the fluorescent lamp fixture 1a samples the illuminance data is determined by the maximum value of the communication time and the dimming rate change time. Therefore, for example, even when the dimming rate is changed by only 4%, the sampling interval of the next illuminance data is the communication time +10 seconds later, and the illuminance data is always sampled at a fixed time.
Even if there is a sudden change in illuminance, it takes time for the light output of the fluorescent lamp fixture to change, resulting in an illumination system with poor responsiveness to changes in illuminance.

Further, since each fluorescent lamp fixture operates so as to change its own dimming rate immediately after receiving the infrared signal, the fluorescent lamp fixtures in the lighting system start and end the dimming operation separately. Therefore, the user feels uncomfortable and unnatural.

The present invention has been made in order to solve the above problems, and in an illumination system in which each fluorescent lamp fixture is interlocked and controlled by an infrared signal so as to achieve a preset target illuminance, the illuminance change. It is an object of the present invention to provide a lighting system capable of improving the responsiveness of the fluorescent lamp fixture to the above, and creating a lighting environment in which the user does not feel uncomfortable or unnatural.

[0010]

An illumination system according to claim 1 according to the present invention comprises a plurality of fluorescent lamp fixtures,
The fluorescent lighting device comprises at least a first fluorescent lighting device including an infrared signal transmitter and an illuminance sensor, and at least one second fluorescent lighting device including an infrared signal receiver and a transmitter. The first fluorescent lamp device calculates the dimming rate based on the detection information of the illuminance sensor and transmits it as an infrared signal to the second fluorescent lamp device, and the second fluorescent lamp device receives the received infrared signal and so on. The lighting system is configured to collectively control the dimming state of all the fluorescent light fixtures by sequentially transmitting to the second fluorescent light fixtures.
And an infrared signal transmission time zone is assigned to each of the second fluorescent light fixtures, and the data sampling interval by the illuminance sensor is the sum of the time required for each of the first and second fluorescent light fixtures to transmit the infrared signal. And the first
It is set to a time that is combined with the dimming rate change time based on the dimming rate calculated by the fluorescent lamp fixture.

An illumination system according to a second aspect of the present invention comprises a plurality of fluorescent lamp fixtures, wherein the fluorescent lamp fixture includes at least a first fluorescent lamp fixture including an infrared signal transmitter and an illuminance sensor, and an infrared signal fixture. Comprising at least one or more second fluorescent light fixtures comprising a receiver and a transmitter, said first
Of the fluorescent lamp calculates the dimming rate based on the detection information of the illuminance sensor and transmits it as an infrared signal to the second fluorescent lamp, and the second fluorescent lamp receives the received infrared signal from other infrared signals. A lighting system configured to collectively control dimming states of all fluorescent lamps by transmitting the infrared signals to the first and second fluorescent lamps. While assigning each transmission time zone,
An address for identifying the first fluorescent light fixture is set in each fluorescent light fixture, and the total time required for each of the first and second fluorescent light fixtures to transmit an infrared signal and the first fluorescent light fixture. The dimming start time of each fluorescent lamp fixture is calculated from the address information for identifying the light source and the source information included in the infrared signal.

[0012]

BEST MODE FOR CARRYING OUT THE INVENTION Embodiment 1. FIG. 1 is a configuration diagram of an illumination system according to Embodiment 1 of the present invention, and the diagram is a bottom view of, for example, four fluorescent lamp fixtures 1a to 1d arranged on a ceiling surface. FIG. 2 shows the constituent blocks of the fluorescent lamp fixture 1a that composes the illumination system of FIG. 1, and FIG. 3 shows the constituent blocks of the other fluorescent lamp fixtures 1c-1d of FIG. In FIGS. 1 to 3, the same or corresponding parts as those in FIGS. 9 to 11 of the conventional example are designated by the same reference numerals. In FIG. 1, 14 is a ceiling surface, and the ceiling surface 14
The fluorescent lamp fixture 1a having the infrared receiver 4, the infrared transmitter 5 and the illuminance sensor 6 mounted therein, and the other fluorescent lamp fixtures 1c to 1d having the infrared receiver 4 and the infrared transmitter 5 mounted thereon are latticed. Are arranged in a shape.

In FIG. 2, 2 is a fluorescent lamp mounted on the main body of the fluorescent lamp fixture 1a, 3 is a lighting device,
An infrared receiver 4 which receives an infrared signal, demodulates the infrared signal pulse-modulated by a data code, and converts the infrared signal into an electric signal, and an infrared signal amplitude-modulated by a carrier wave (38 KHz) by a data code An infrared transmitter 5 for transmitting a signal, an illuminance sensor 6 for detecting the illuminance of the floor surface and converting it into an electric signal, an infrared signal transmission / reception process, and an inverter 8 driven by the information from the illuminance sensor 6 to drive the fluorescent lamp 2 The control unit 7 is configured to perform lighting and dimming control, and the control unit 7 includes an address number storage unit that stores a number that identifies the fluorescent lamp fixture. The lighting device 3 is mounted in the fluorescent lamp fixture 1a, and the infrared receiver 4, the infrared transmitter 5, and the illuminance sensor 6 face the floor surface direction through a hole cut out in the main body of the fluorescent lamp fixture 1a. It is structured.

In the configuration block diagram of the other fluorescent lamp fixtures 1c to 1d shown in FIG. 3, only the configuration of the fluorescent lamp fixture 1a shown in FIG. 2 is different from that of the illuminance sensor 6, and other configurations are provided. Are the same, the same reference numerals are given and the description is omitted.

The fluorescent lamp fixtures 1a to 1d have address numbers 1 to 4 for identifying the fluorescent lamp fixtures in advance.
It is assumed that the address numbers and the number of fluorescent lamp fixtures (four in this embodiment) that compose the lighting system are stored in the address number storage unit of the control unit 7 of the fluorescent lamp fixtures 1a to 1d. It is assumed to be stored and stored. Further, regarding the setting method and means of this address number and the number of fluorescent lamp fixtures constituting the lighting system, there is no particular decision, and any setting may be made, which is not related to the gist of the present invention. Will be omitted.

FIG. 4 is a time chart showing the timing at which the fluorescent lamp fixtures 1a to 1d transmit infrared signals. It is assumed that the fluorescent light fixtures 1a to 1d are time-divided into time periods in which the infrared signal can be transmitted in the order of preset address numbers. For example, the fluorescent light fixture 1a can transmit the infrared signal during the transmission time period a. The fluorescent lamp fixture 1b is assumed to be capable of transmitting an infrared signal during the transmission time period b. Similarly, the transmission time zone c is transmitted to the fluorescent lamp fixture 1c.
The transmission time zone d is assigned to the fluorescent light fixture 1d so that infrared signals transmitted from the fluorescent light fixtures 1a to 1d do not collide, and the transmission time spans a to d are as shown in FIG. It is defined by the width of time t. Further, FIG. 5 is a diagram showing a sampling interval from when the fluorescent lamp fixture 1a samples the illuminance data and transmits the dimming rate command to when the next illuminance data is sampled.

The operation of the illumination system will be described below with reference to FIGS. 1 to 3 and FIGS. 4 and 5. First, the fluorescent lamp fixture 1 a samples the illuminance data on the floor surface by the illuminance sensor 6. Based on the sampled illuminance data and the preset target illuminance, the control unit 7
Calculate the dimming ratio that should be changed. Here, for the sake of explanation, a case where the dimming rate is increased by 20% will be described.
Each fluorescent lamp fixture 1a to 1d is dimmed at a rate of 2% / sec when the dimming rate is increased and at a rate of 1% / sec when the dimming rate is decreased so as not to make the user feel uncomfortable as in the conventional case. The rate shall change.

When it is determined that the fluorescent lamp fixture 1a increases the dimming ratio by 20%, the fluorescent lamp fixture 1a
Is the dimming rate 2 from the infrared transmitter 5 in the transmission time zone a (time t) shown in FIG. 4 for the other fluorescent lamp fixtures 1b to 1d.
The infrared signal (signal a) for commanding 0% increase is transmitted, and the inverter 8 is driven so as to increase the dimming rate of the fluorescent lamp 2 of itself by 20%. Next, fluorescent light fixture 1a
The fluorescent lamp device 1b receives an infrared signal (signal a) from the infrared receiver 4 provided therein. In order to decode the received infrared signal (signal a) by the control unit 7 and relay the infrared signal (signal a) to another fluorescent lamp fixture, the transmission time period b
At (time t), the signal is transmitted from the infrared transmitter 5 as the signal b, and the inverter 8 is driven so as to increase the dimming rate of the fluorescent lamp 2 of itself by 20%. Then, in the next fluorescent lamp fixture 1c, the same processing as that of the fluorescent lamp fixture 1b is performed, and the same is transmitted to the fluorescent lamp fixture 1d. Fluorescent light fixture 1
At d, the infrared signal (signal c) from the fluorescent lamp fixture 1c is received and decoded, and is transmitted as the signal d in the transmission time zone d (time t), and the dimming rate of its own fluorescent lamp 2 is increased by 20%. The inverter 8 is driven so that

As described above, the time required for communication in this lighting system from the infrared lamp device 1a transmitting the infrared signal (signal a) to the fluorescent lamp device 1d being transmitted to the signal d (hereinafter referred to as communication time). Is the time of t × 4 as shown in FIG. On the other hand, when the dimming rate increases, the changing operation is 2% / sec. Therefore, the time required for each fluorescent lamp fixture 1a to 1d to increase the dimming rate by 20% (hereinafter referred to as dimming rate change time). ) Is 10 seconds as shown in FIG. Therefore, the time from the fluorescent lamp fixture 1a sampling the illuminance data and transmitting the signal a of the dimming rate 20% increase command to the end of the dimming rate change of the fluorescent lamp fixture 1d is:
The communication time + the dimming rate change time is t × 4 + 10 seconds.

By the way, from the time when the fluorescent lamp fixture 1a samples the illuminance data of the floor surface and transmits the signal a of the command to increase the dimming rate of 20% until the change of the dimming factor of the fluorescent lamp fixture 1d is completed. When transmitting the signal a, the fluorescent lamp fixture 1a sets the number of lighting system components preset in the address number storage unit of its own control unit 7 and the dimming rate of 20%.
Since it can be determined from the rise that t × 4 + 10 seconds, t × 4 + 1 from the previous illuminance data sampling.
It operates so as to sample the next illuminance data after 0 seconds.

Next, a case will be described in which the fluorescent lamp fixture 1a determines that the dimming rate should be lowered by, for example, 2%. When it is determined that the fluorescent lamp fixture 1a lowers the dimming rate by 2%,
The fluorescent lamp device 1a is an infrared signal (signal that instructs the other fluorescent lamp devices 1b to 1d to decrease the dimming rate by 2% from the infrared transmitter 5 in the transmission time zone a (time t) shown in FIG. While transmitting a), the inverter 8 is driven so as to decrease the dimming rate of the fluorescent lamp 2 of itself by 2%. Next, the infrared light signal (signal a) from the fluorescent light fixture 1a is received by the infrared light receiver 4 included in the fluorescent light fixture 1b.
The received infrared signal (signal a) is decoded by the control unit 7, and is transmitted as the signal b in the transmission time period b (time t) in order to relay the infrared signal (signal a) to another fluorescent lamp fixture. , Drives the inverter 8 so as to reduce the dimming ratio of the fluorescent lamp 2 of its own by 2%. Then, in the next fluorescent lamp fixture 1c, the same processing as that of the fluorescent lamp fixture 1b is performed, and the same is transmitted to the fluorescent lamp fixture 1d. Fluorescent light fixture 1d
Then, the infrared signal (signal c) from the fluorescent lamp fixture 1c
Is transmitted and received as a signal d in the transmission time zone d (time t), and the dimming rate of its own fluorescent lamp 2 is 2%.
The inverter 8 is driven to lower it.

Even when the dimming rate is decreased by 2%, the communication time from the fluorescent lamp fixture 1a to the fluorescent lamp fixture 1d is t × 4 as in the case where the dimming ratio is increased by 20%.
It's time. On the other hand, when the dimming rate decreases, the changing operation is 1% / sec. Therefore, the dimming rate changing time when the fluorescent lamp fixtures 1a to 1d decrease 2% is 2 seconds as shown in FIG. Therefore, the time from the fluorescent lamp fixture 1a sampling the illuminance data and transmitting the signal a of the dimming rate 2% lowering command to the end of the dimming ratio change of the fluorescent lamp fixture 1d is the communication time + adjustment It is represented by the change time of the light rate and becomes t × 4 + 2 seconds.

By the way, from the time when the fluorescent lamp 1a samples the illuminance data of the floor surface and transmits the signal a of the dimming rate 2% lowering command until the change of the dimming rate of the fluorescent lamp 1d ends. When transmitting the signal a, the fluorescent lamp fixture 1a sets the number of illumination system components preset in the address number storage section of its own control section 7 and the change dimming rate of 2%.
Since it can be determined that it is t × 4 + 2 seconds from the fall, the next illuminance data is sampled after t × 4 + 2 seconds from the previous illuminance data sampling.

As described above, in the present embodiment, the fluorescent lamp fixture 1a equipped with the illuminance sensor has the following relation: the communication time of the lighting system + the dimming rate change time commensurate with the dimming rate transmitted by the command itself. Since the sampling interval of the illuminance data is changed, the responsiveness to the illuminance change is improved, and it is possible to obtain the illumination system capable of quickly responding to the illuminance change of the illumination environment.

In the above embodiment, an example of installation of four fluorescent lamps 1a to 1d is shown. An infrared ray signal (signal a) is transmitted from the fluorescent lamp 1a and transmitted to the fluorescent lamp 1d. The fluorescent lamp fixture 1d also transmits an infrared signal as the signal d, which means that, for example, the fluorescent lamp fixture 1c cannot happen to receive the transmission signal from the fluorescent lamp fixture 1a via the fluorescent lamp fixture 1b. In case of
It is possible to enable reception by the transmission signal of the fluorescent lamp fixture 1d.

Embodiment 2. Configuration of the illumination system according to the present embodiment and fluorescent lamp fixture 1a constituting the illumination system
The configuration block diagram of FIG. 1 and the configuration block diagrams of the other fluorescent lamp fixtures 1b to 1d are shown in FIG. 1, FIG. 2, and FIG.
Since it is the same as, the description thereof will be omitted here. However, in the present embodiment, the fluorescent lamp fixture 1 shown in FIGS.
In the address number storage unit of the control unit 7 in the block diagrams a to 1d, in addition to the role described in the first embodiment, the address number of the fluorescent lamp fixture 1a equipped with the illuminance sensor is also stored at the same time. I shall. First Embodiment
In, the fluorescent light fixture 1a equipped with the illuminance sensor is
The sampling interval of the illuminance data is changed according to the communication time of the lighting system + the dimming rate change time corresponding to the dimming rate transmitted by the command so that the illuminance change in the lighting environment can be responded quickly. However, since each fluorescent lamp fixture performs the dimming control operation of its own fluorescent lamp immediately after receiving the infrared signal, each fluorescent lamp fixture in the lighting system starts and finishes the dimming operation separately. However, in the present embodiment, the problem is solved by starting the dimming operation of each fluorescent lamp fixture at the same time.

FIG. 6 shows an example of the signal data structure of the infrared signal. The structure of this signal data is configured such that, for example, in addition to the command dimming rate signal, address information (hereinafter referred to as transmission source information) of the fluorescent lamp fixture that transmitted this infrared signal is included in the infrared signal. Use to communicate between each fluorescent light fixture. FIG. 7 shows a fluorescent lamp device 1a-
It is a time chart figure which showed an example of the timing which 1d receives and transmits an infrared signal, and also has shown the time when each fluorescent lamp fixture 1a-1d starts a light control operation. The relationship between the transmission time zone (time t) assigned to each of the fluorescent lamp fixtures 1a to 1d and the transmission is the same as that described in the first embodiment, and thus the description thereof is omitted here.

The operation when the fluorescent lamp fixtures 1a to 1d are arranged as shown in FIG. 1 will be described with reference to FIG. The above-mentioned FIG. 6 from the fluorescent lamp fixture 1 a equipped with the illuminance sensor 6
The infrared signal (signal a) having the command dimming rate and the source address information shown in (1) is simultaneously received by, for example, the fluorescent light fixtures 1b and 1d, and the fluorescent light fixture 1c is transmitted from the fluorescent light fixture 1b via the fluorescent light fixture 1b. In the case where the infrared light signal (signal b) is received, the steps until the fluorescent lamp fixtures 1a to 1d enter the dimming operation will be sequentially described below. The communication time required until the infrared signal of the signal a transmitted by the fluorescent lamp fixture 1a itself is transmitted to another fluorescent lamp fixture and the fluorescent lamp fixture 1d transmits the signal d is t × 4. This is as described in the first embodiment. In the present embodiment, the dimming operation is started after t × 4 = 4t after the fluorescent lamp fixture 1a itself starts transmitting the signal a. Next, as shown in FIG. 7, the fluorescent lamp fixture 1b receives the signal a transmitted by the fluorescent lamp fixture 1a in the transmission time zone a (time t), and receives the received signal a from the control unit in the fluorescent lamp fixture 1b. 7, the source information included in the signal a (in this case, the address of the source fluorescent lamp fixture 1a is 1), and the number of fluorescent lamp fixtures of the lighting system stored in its own address number storage unit. The time (hereinafter referred to as the dimming start time) until the dimming operation of the fluorescent light fixture 1b is started is obtained from the address number that identifies the fluorescent light fixture 1a.

The method of calculating the dimming start time of the fluorescent lamp fixture 1b is given by the following equation (1). Dimming start time = communication time- (| fluorescent light fixture 1a address number-source information |) x t -------- (1) That is, from the start of receiving the signal a in the fluorescent light fixture 1b to the dimming operation. The time until entering is: dimming start time = 4t− (| 1-1 |) × t = 4t, and the fluorescent lamp fixture 1b has received 4 times from the start of receiving the signal a.
The light control operation is started after t. This is the fluorescent lamp fixture 1a
Will coincide with the start of the dimming operation 4t after the start of transmission of the signal a. Similarly, as in the fluorescent lamp fixture 1b, the fluorescent lamp fixture 1d receives the signal a transmitted by the fluorescent lamp fixture 1a in the transmission time zone a (time t) as shown in FIG. The control unit 7 in the lighting fixture 1d decodes the transmission source information included in the signal a (in this case, the address is 1) and the number of fluorescent lighting fixtures of the lighting system stored in its own address number storage unit and the fluorescence. From the address number identifying the lighting fixture 1a, the fluorescent lighting fixture 1
The dimmer start time of d is calculated. The dimming start time is (1) above
Given by the formula, the dimming start time of the fluorescent lamp fixture 1d is 4t
It will be later. Therefore, similarly to the fluorescent lamp fixture 1b, the fluorescent lamp fixture 1d temporally coincides with the fluorescent lamp fixture 1a starting the dimming operation 4t after the transmission of the signal a.

As shown in FIG. 7, the fluorescent lamp fixture 1c receives the signal a from the fluorescent lamp fixture 1a as a signal b passed through the fluorescent lamp fixture 1b in the transmission time zone b (time t),
The received signal is decoded by the control unit 7 of its own, and the transmission source information included in the signal b (in this case, the fluorescent lamp fixture 1b of the transmission source) is transmitted.
2) and the number of fluorescent lighting fixtures of the lighting system stored in its own address number storage unit and the fluorescent lighting fixture 1
The dimming start time of the fluorescent lamp fixture 1c is obtained from the address number that specifies a. The dimming start time is given by the above formula (1), and the time from the start of receiving the signal b in the fluorescent lamp fixture 1c to the start of the dimming operation is the dimming start time = 4t- (| 1-2 |). Xt = 3t, and the fluorescent lamp device 1c has received 3 times after receiving the signal b.
The light control operation is started after t. Although the dimming operation starts 3t after the start of receiving the signal b, the fluorescent lamp fixture 1c receives the signal a from the other fluorescent lamp fixtures 1b and 1d as shown in FIG.
Since the signal is received with a delay of the time t for one transmission time period, the dimming operation of the fluorescent lamp fixture 1c is started by the fluorescent lamp fixture 1c.
Considering the time from the start of transmission of the signal a of a, 3t + t = 4
Since it is after t, the light control operation of the fluorescent lamp fixtures 1a, 1b, and 1d coincides in time.

FIG. 8 is a view showing another example of the time chart shown in FIG. An infrared signal (signal a) from the fluorescent light fixture 1a equipped with the illuminance sensor 6 is received by, for example, the fluorescent light fixture 1b, and then the fluorescent light fixture 1c transmits the signal b from the fluorescent light fixture 1b via the fluorescent light fixture 1b. In the case where the fluorescent lamp fixture 1d receives the signal c from the fluorescent lamp fixture 1c via the fluorescent lamp fixture 1c, the dimming start time of each fluorescent lamp fixture will be described with reference to FIG. The dimming operation start time of the fluorescent lamp fixtures 1a, 1b, 1c is the same as that described above, and thus the description thereof is omitted here, and the fluorescent lamp fixture 1d will be described. Fluorescent light fixture 1d
Receives a signal a from the fluorescent lamp fixture 1a as a signal c from the fluorescent lamp fixture 1c via the fluorescent lamp fixtures 1b and 1c as shown in FIG. 8, and the received signal is decoded by its own control unit 7. Then, the transmission source information included in the signal c (in this case, the address of the transmission-source fluorescent lamp fixture 1c is 3), the number of fluorescent lamp fixtures of the lighting system stored in its own address number storage unit, and the fluorescent lamp fixture 1a. The dimming start time of the fluorescent lamp fixture 1d is obtained from the address number identifying the. The dimming start time is given by the above formula (1), and the signal c in the fluorescent lamp fixture 1d
The time from the start of the reception of the light to the start of the dimming operation is the dimming start time = 4t− (| 1−3 |) × t = 2t, and the fluorescent lamp fixture 1d receives the signal c from the start of the reception of 2
The light control operation is started after t. The dimming operation starts 2t after the start of reception of the signal c, but as shown in FIG. 8, the fluorescent lamp fixture 1d has the following structure after the fluorescent lamp fixture 1a starts transmitting the signal a:
Since the signal is received with a delay of 2t for the two transmission time zones at the time of receiving the signal c, the start of the dimming operation of the fluorescent lamp fixture 1d considers the time from the signal a transmission start of the fluorescent lamp fixture 1a. Since 2t + 2t = 4t, the light control operation of the fluorescent lamp fixtures 1a, 1b, and 1c is temporally coincident with the start of the light control operation.

As described above, each fluorescent lamp fixture constituting the lighting system starts transmitting or receiving the infrared signal having the command dimming ratio and the source address information, and then transmits the source information included in the infrared signal and the respective source information. The dimming start time of each fluorescent light fixture is calculated from the number of fluorescent light fixtures stored in the address number storage part of the fluorescent light fixture and the address number of the fluorescent light fixture equipped with the illuminance sensor, and the dimming operation is started. As a result, all the fluorescent light fixtures in the lighting system can start the dimming operation at the same time as the dimming rate instructed by the fluorescent light fixture equipped with the illuminance sensor, which makes the user feel uncomfortable and unnatural. It is possible to obtain a lighting system that can create a lighting environment that does not make people feel.

In the above embodiment as well, in the case where four fluorescent lamps 1a to 1d are installed, an infrared signal (signal a) is transmitted from the fluorescent lamp 1a and is transmitted to the fluorescent lamp 1d. The lighting fixture 1d also transmits an infrared signal as the signal d. This is the same as in the first embodiment, but when the fluorescent lighting fixture 1c happens to be unable to receive the transmission signal from the fluorescent lighting fixture 1a, The signal can be received by the transmission signal of the fluorescent lamp fixture 1d.

[0034]

As described above, the lighting system according to the first aspect of the present invention is composed of a plurality of fluorescent light fixtures, and the fluorescent light fixture includes at least an infrared signal transmitter and an illumination sensor. It comprises a lighting fixture and at least one or more second fluorescent lighting fixtures including an infrared signal receiver and a transmitter, and the first fluorescent lighting fixture calculates a dimming rate based on detection information of the illuminance sensor. Then, this is transmitted as an infrared signal to the second fluorescent lamp fixture, and the second fluorescent lamp fixture sequentially transmits the received infrared signal to the other second fluorescent lamp fixtures to adjust all the fluorescent lamp fixtures. A lighting system for collectively controlling light states, wherein the infrared signal transmission time zones are respectively assigned to the first and second fluorescent lamp fixtures, and the data sampling interval by the illuminance sensor is Note: The first and second fluorescent lamp fixtures have a total time required to transmit an infrared signal and a dimming rate change time based on the dimming rate calculated by the first fluorescent lamp fixture. Then, since it is changed according to the time, the responsiveness to the illuminance change is improved, and it is possible to obtain the illumination system capable of promptly responding to the illuminance change of the illumination environment.

An illumination system according to a second aspect of the present invention comprises a plurality of fluorescent light fixtures, the fluorescent light fixtures including at least a first fluorescent light fixture having an infrared signal transmitter and an illuminance sensor, and receiving infrared signal. And at least one second fluorescent lamp fixture including a transmitter, wherein the first fluorescent lamp fixture calculates a dimming rate based on the detection information of the illuminance sensor, and uses this as an infrared signal. The second fluorescent lamp device transmits the received infrared signal to the other second fluorescent lamp device so that the dimming state of all the fluorescent lamp devices is collectively controlled. In the lighting system described above, the infrared signal transmission time zone is assigned to each of the first and second fluorescent lamp fixtures, and an address for identifying the first fluorescent lamp fixture is set in each fluorescent lamp fixture. , The first Of the total time required for the second and second fluorescent lamp devices to transmit the infrared signal, the address information for identifying the first fluorescent lamp device, and the transmission source information included in the infrared signal. Since the dimming start time is calculated and the dimming operation is started according to the dimming start time, the fluorescent lamp fixture in the lighting system is at the same time as the dimming ratio commanded by the fluorescent lamp fixture including the illuminance sensor. It is possible to obtain a lighting system that can start the dimming operation and can create a lighting environment in which the user does not feel uncomfortable or unnatural.

[Brief description of drawings]

FIG. 1 is a configuration diagram of an illumination system according to a first embodiment of the present invention.

FIG. 2 is a configuration block diagram of a fluorescent lamp fixture equipped with the illuminance sensor according to the first embodiment of the present invention.

FIG. 3 is a configuration block diagram of a fluorescent lamp fixture that does not include the illuminance sensor according to the first embodiment of the present invention.

FIG. 4 is a time chart diagram showing the transmission timing of the infrared signal according to the first embodiment of the present invention.

FIG. 5 is a diagram showing a sampling interval of illuminance data according to the first embodiment of the present invention.

FIG. 6 is a diagram showing an example of an infrared signal data structure according to the second embodiment of the present invention.

FIG. 7 is a time chart diagram showing an example of the reception timing and the transmission timing of the infrared signal according to the second embodiment of the present invention.

FIG. 8 is a time chart diagram showing another example of the reception timing and the transmission timing of the infrared signal according to the second embodiment of the present invention.

FIG. 9 is a configuration diagram showing a conventional illumination system.

FIG. 10 is a configuration block diagram of a fluorescent lamp fixture equipped with a conventional illuminance sensor.

FIG. 11 is a configuration block diagram of a fluorescent lamp fixture that does not include a conventional illuminance sensor.

FIG. 12 is a diagram showing a conventional infrared signal communication method.

FIG. 13 is a diagram showing a sampling interval of conventional illuminance data.

[Explanation of symbols]

1a to 1d fluorescent lamp fixtures, 2 fluorescent lamps, 3 lighting devices, 4 infrared receivers, 5 infrared transmitters,
6 illuminance sensor, 7 control unit, 8 inverter,
13 floor surface, 14 ceiling surface.

   ─────────────────────────────────────────────────── ─── Continued front page    (72) Inventor Satoshi Nagai             2-3 2-3 Marunouchi, Chiyoda-ku, Tokyo             Inside Ryo Electric Co., Ltd. (72) Inventor Kentaro Eguchi             2-14-14 Ofuna, Kamakura-shi, Kanagawa Mitsubishi             Electric Lighting Co., Ltd. (72) Inventor Koji Shibata             2-14-14 Ofuna, Kamakura-shi, Kanagawa Mitsubishi             Electric Lighting Co., Ltd. (72) Inventor Hiroaki Nishikawa             2-14-14 Ofuna, Kamakura-shi, Kanagawa Mitsubishi             Electric Lighting Co., Ltd. (72) Inventor Shigeki Terasawa             2-14-14 Ofuna, Kamakura-shi, Kanagawa Mitsubishi             Electric Lighting Co., Ltd. (72) Inventor Mamoru Hamada             2-14-14 Ofuna, Kamakura-shi, Kanagawa Mitsubishi             Electric Lighting Co., Ltd. (72) Inventor Takayuki Abe             2-14-14 Ofuna, Kamakura-shi, Kanagawa Mitsubishi             Electric Lighting Co., Ltd. (72) Inventor Noboru Ozawa             2-14-14 Ofuna, Kamakura-shi, Kanagawa Mitsubishi             Electric Lighting Co., Ltd. F term (reference) 3K073 AA02 AA14 AA53 AA62 AA74                       AA85 BA28 BA36 CB01 CB07                       CC14 CC22 CE09 CE17 CG05                       CG15 CG44 CH01 CH08 CJ11                       CJ22 CM05

Claims (2)

[Claims] 1. A plurality of fluorescent light fixtures, wherein the fluorescent light fixture includes at least a first fluorescent light fixture including an infrared signal transmitter and an illuminance sensor, and at least one infrared light receiver and transmitter. One or more second fluorescent light fixtures, the first fluorescent light fixture calculates a dimming rate based on the detection information of the illuminance sensor, and transmits this as an infrared signal to the second fluorescent light fixture. The second fluorescent lamp fixture is an illumination system configured to collectively control the dimming state of all fluorescent lamp fixtures by sequentially transmitting the received infrared signal to other second fluorescent lamp fixtures. , While assigning an infrared signal transmission time zone to each of the first and second fluorescent light fixtures, and setting the data sampling interval by the illuminance sensor to each of the first and second fluorescent light fixtures transmitting an infrared signal. Essential The lighting system is characterized in that the total sum of the operating time and the dimming rate change time based on the dimming rate calculated by the first fluorescent lamp fixture is set to a total time. 2. A plurality of fluorescent light fixtures, wherein the fluorescent light fixture includes at least a first fluorescent light fixture including an infrared signal transmitter and an illuminance sensor, and at least one infrared light receiver and transmitter. One or more second fluorescent light fixtures, the first fluorescent light fixture calculates a dimming rate based on the detection information of the illuminance sensor, and transmits this as an infrared signal to the second fluorescent light fixture. The second fluorescent lamp fixture is an illumination system configured to collectively control the dimming state of all the fluorescent lamp fixtures by transmitting the received infrared signal to another second fluorescent lamp fixture, An infrared signal transmission time zone is assigned to each of the first and second fluorescent light fixtures, and an address that identifies the first fluorescent light fixture is set in each fluorescent light fixture. Each fluorescent lamp fixture is infrared The dimmer start time of each fluorescent lamp fixture is calculated from the total time required to transmit the signal, the address information for identifying the first fluorescent lamp fixture, and the transmission source information included in the infrared signal. Lighting system.