JP3383714B2 - Lighting equipment - Google Patents

Description

Detailed Description of the Invention

[0001]

BACKGROUND OF THE INVENTION 1. Field of the Invention The present invention relates to an illuminating device in which the illuminating means is dimming-controlled so that the illuminance on the surface to be illuminated detected by the illuminance detecting means becomes a predetermined illuminance.

[0002]

2. Description of the Related Art Conventionally, as an illuminating device in which the illuminating means is dimming-controlled so that the illuminance on the surface to be illuminated detected by the illuminance detecting means becomes a predetermined illuminance, it has been disclosed in Japanese Patent Laid-Open No. 4-87189. There is something. This lighting device sets a desired illuminance in a wireless remote controller equipped with an illuminance sensor, and sends a wireless dimming signal from the wireless remote controller when the detection output of the illuminance sensor is above (or below) the set illuminance. It is for dimming control of the lighting equipment. That is, real time (real time) illuminance is detected by the illuminance sensor, and the light output of the lighting fixture is dimming-controlled so as to reduce the difference between the detected illuminance and the set illuminance.

[0003]

However, in the above-mentioned conventional structure, when the output of the illuminance sensor changes suddenly and instantaneously due to the daylight inserted into the indoor space through the window, the illumination is followed. Since the light output of the device changes, flicker is very likely to occur, stable illuminance is difficult to obtain on the illuminated surface, and there is a possibility that a comfortable visual environment (a lighting environment that is easy on human eyes) cannot be realized.

The present invention has been made in view of the above problems, and an object of the present invention is to provide an illuminating device which can realize a comfortable visual environment with little flicker.

[0005]

In order to achieve the above object, the invention of claim 1 includes one or a plurality of illuminating means for illuminating a surface to be illuminated with light of the light source, and detecting illuminance. And an illuminance detecting unit that performs arithmetic processing of detection output from the illuminance detecting unit to obtain illuminance data representing the illuminance on the illuminated surface, and the illuminated surface has a predetermined illuminance based on the obtained illuminance data. and an illumination means and control dimming a lighting and control means for increasing or decreasing the light output, lighting
Distance measuring means for measuring the distance from the device to the object,
The distance data from the lighting device depends on the type of object.
Storage means for storing the data in advance, and the control means is
The distance measured by the measuring means and the distance data stored in the storage means
Data is compared to determine the type of object and
When the object is of a specific type, the arithmetic processing is performed so that the illuminance data does not include an instantaneous change in the detection output of the illuminance detection means that is shorter than a predetermined time. Claim
In order to achieve the above object, the invention of Item 2 includes a light source.
One or a plurality of illuminating hands that irradiate the illuminated surface with the light of the light source
Step, illuminance detection means for detecting illuminance, and this illuminance detection hand
Illuminance on the illuminated surface by computing the detection output from the step
To obtain the illuminance data that represents
Based on this, the illumination means is set so that the illuminated surface has a predetermined illuminance.
Lighting with control means for controlling dimming to increase or decrease light output
An illuminance detection device that is determined by the type of object
Data indicating the characteristics of the temporal change in the detection output of the stage is recorded in advance.
It is stored in the storage means, and the control means outputs the detection output of the illuminance detection means.
The data stored in the storage means for the characteristics of the temporal change of
The object is identified by comparing with
If the detection output of the illuminance detection means is a specific type
The illuminance data does not include instantaneous changes that are shorter than the fixed time.
It is characterized by performing such arithmetic processing.

According to a third aspect of the present invention, in the first or second aspect of the invention, the control means samples the detection output of the illuminance detection means, calculates a representative value of the sampling data within a predetermined period, and calculates the representative value. The feature is that it is illuminance data. According to the invention of claim 4, in the invention of claim 1 or 2 , the control means samples the detection output of the illuminance detecting means, integrates the sampling data within a predetermined period, and sets the integrated value as the illuminance data. Characterize.

According to a fifth aspect of the present invention, in the third or fourth aspect of the invention, the control means further calculates a value obtained by arithmetically processing the sampling data within a predetermined period together with other values within a plurality of predetermined periods. It is characterized in that the illuminance data is the result obtained by processing. In the invention of claim 6, in the invention of claim 3, 4 or 5 , the control means sets the upper limit value and the lower limit value as sampling data when the sampling data is equal to or more than a predetermined upper limit value or less than a predetermined lower limit value, respectively. Is characterized by.

According to a seventh aspect of the present invention, in the third aspect of the invention, the control means sets a predetermined number in order of magnitude from the sampling data of the largest value and the smallest value of the sampling data within the prescribed period. It is characterized in that a representative value is calculated by processing the remaining sampling data that is excluded. The invention of claim 8 is any of claims 3 to 7.
In one of the invention, the control means, whether large sampling data of a relatively value small sampling data or relatively value among the sampled data within a predetermined time period are concentrated towards the end of the predetermined period To determine
If relatively small values of sampling data are concentrated toward the end of the specified period, shorten the subsequent specified period, and sample values of relatively large values are concentrated toward the end of the specified period. In this case, the subsequent predetermined period is lengthened.

[0009]

[0010]

According to a ninth aspect of the present invention, in the invention according to any one of the first to eighth aspects, human body detecting means for detecting the presence or absence of a human body is provided, and the human body detection output from the human body detecting means is given. The control means performs the dimming control of the illumination means only when.

[0012]

[0013]

[0014]

According to the first aspect of the present invention, the illumination device is used as a target.
Distance measuring means for measuring the distance to an object and the type of object
Pre-stores the distance data from the lighting device that is determined according to
And a storage means for controlling the distance measurement means.
The measured distance and the distance data stored in the storage means are compared.
Discriminate the type of the target object and the target object
Since performing arithmetic processing as short instantaneous change than the predetermined time of the detection output of the illuminance detection unit is not included in the illuminance data when was a class, the irradiated among the object to be illuminated
For types of objects that require the surface illuminance to be a predetermined illuminance
It is possible for the control means to perform dimming control only for the corresponding lighting means.
Therefore, a comfortable visual environment can be efficiently realized.
Even if the illuminance on the illuminated surface changes due to the daylight being illuminated on the illuminated surface or another object placed on the illuminated surface and the reflectance changing, the change is predetermined. In the case of an abrupt and instantaneous change that is shorter than the time, the control unit does not change the illuminance of the illuminated surface by controlling the illumination unit in response to such a change, and the illuminance of the illuminated surface does not change. It is possible to always maintain a predetermined illuminance, prevent flicker of light output, and obtain a comfortable viewing environment. Claim
In the configuration of the second invention, the illuminance determined depending on the type of the object
Data showing the characteristics of the temporal change of the detection output of the detection means
It is stored in the storage means in advance, and the control means detects the illuminance detection means.
The characteristics of the temporal change of the output power are stored in the storage means.
The object is identified by comparing it with the data and
When the elephant is a specific type, the illuminance detection means detects it.
The illuminance data includes instantaneous changes in force that are shorter than the specified time.
Since the calculation processing is performed so that
Among them, it is necessary to set the illuminance on the surface to be illuminated to a predetermined illuminance.
Control means dimming only the lighting means corresponding to the type of object
It can be controlled and efficiently realizes a comfortable viewing environment.
be able to. Also, the illuminated surface is illuminated by daylight,
If another object is placed on the illuminated surface and the reflectance changes,
Even if the illuminance on the irradiation surface changes, the change does not
When the change is abrupt and momentary that is shorter than the fixed time
The control means controls the lighting means against such changes.
The illuminance of the illuminated surface does not change and the illuminated surface
The illuminance can always be kept at the specified level, and
Prevents flickering of the output, to obtain a pleasant visual environment
it can.

In the configuration of the invention of claim 3 , the control means comprises:
The detection output of the illuminance detection means is sampled, and a representative value of the sampling data within a predetermined period is calculated, and this representative value is used as the illuminance data. Therefore, a sudden and instantaneous change in the detection output shorter than the predetermined time is included. It is possible to easily obtain non-illumination data. In the configuration of the invention of claim 4 , since the control means samples the detection output of the illuminance detecting means and integrates the sampling data within a predetermined period, and uses this integrated value as the illuminance data, it is shorter than the predetermined time. Moreover, it is possible to easily obtain the illuminance data that does not include the instantaneous change in the detection output.

In the structure of the invention of claim 5 , the control means comprises:
Since the illuminance data is the result obtained by arithmetically processing the value obtained by arithmetically processing the sampling data within the predetermined period together with other values within the plurality of predetermined periods, the illuminance data is shorter than the predetermined time and It is possible to easily obtain illuminance data that does not include an instantaneous change in the detection output. Claim 6
In the configuration of the invention, when the sampling data is equal to or higher than the predetermined upper limit value or equal to or lower than the predetermined lower limit value, the upper limit value and the lower limit value are used as the sampling data, so that the illuminance of the illuminated surface exceeds the upper limit value. The dimming control of the illumination means by the control means is not performed for the illuminance higher than necessary and the low illuminance below the lower limit.
You can get a comfortable visual environment.

In the configuration of the invention of claim 7 , the control means comprises:
From the sampling data of the largest value and the smallest value of the sampling data within the predetermined period, a predetermined number is excluded in the order of magnitude and the remaining sampling data is arithmetically processed to calculate the representative value. It is possible to easily obtain illuminance data that does not include a short and abrupt and instantaneous change in the detection output.

In the structure of the invention of claim 8 , the control means comprises:
It is determined whether the sampling data with a relatively small value or the sampling data with a relatively large value among the sampling data within the prescribed period is concentrated toward the end of the prescribed period, and the relatively small value If the sampling data of is concentrated toward the end of the specified period, shorten the subsequent specified period, and if the sampled data of a relatively large value is concentrated toward the end of the specified period, Since the subsequent predetermined period is made longer, the change in the direction of decreasing illuminance is detected earlier and the change in the direction of increasing illuminance is slower than the change in the illuminated surface due to external factors other than the illumination means. As a result, when the illuminance on the illuminated surface decreases, the light output of the lighting unit increases quickly, and when the illuminance increases, it follows slowly. The light output of the illumination means is reduced, it is possible to obtain a comfortable visual environment.

[0019]

[0020]

According to the ninth aspect of the invention, the human body detecting means for detecting the presence or absence of the human body is provided, and the control means performs the dimming control of the illuminating means only when the human body detecting output from the human body detecting means is given. The control means does not perform the dimming control of the illumination means when there is no person, and the dimming control can be efficiently performed only when necessary.

[0022]

[0023]

[0024]

【Example】

(Embodiment 1) FIG. 1 is a block diagram showing this embodiment.
The illumination device according to the present embodiment includes an illuminance detection unit 1 that includes a photodiode as a light receiving element to detect illuminance, and a control that performs dimming control of a plurality of illumination units 5 ₁ ... Based on the detection output from the illuminance detection unit 1. And a plurality of illuminators 5 ₁ which have a light source and are connected to the controller 2 and which are controlled by the controller 2 to increase or decrease the light output of the light source.
The light receiving element in the illuminance detection unit 1 may be CdS instead of the photodiode. Further, the number of illumination units 5 connected to the control unit 2 and controlled for dimming is not particularly limited.

As will be described later, the illuminance detecting section 1 is attached to the ceiling of an indoor space such as an office with the light receiving surface of the light receiving element facing downward (toward the floor surface), and an object directly below it, for example, The illuminance of the illuminated surface is indirectly detected by detecting the intensity of light reflected from the illuminated surface such as a desk, a shelf, or the floor (such as the top surface or floor of the desk). Therefore, for example, an optical means is used to focus the above-mentioned light on the light-receiving surface of the light-receiving element so that only the intensity of the light incident from a specific range can be detected.

A memory section 3 and a timer section 4 are connected to the control section 2, and a fixed timing signal is output from the timer section 4 to the control section 2 at predetermined time intervals. 2 determines the timing of taking in the detection output from the illuminance detection unit 1. However, the output time interval of the timing signal in the timer unit 4 can be set by the control unit 2. In the memory unit 3,
The illuminance data obtained by arithmetically processing the detection output of the illuminance detecting unit 1 in the control unit 2 is stored, and the stored illuminance data can be read from the memory unit 4 at any time by the control unit 2.

The control unit 2 is composed of, for example, a microcomputer, and the illuminating unit 5 ₁ so that the illuminance detected by the illuminance detecting unit 1 becomes a predetermined illuminance based on the illuminance data. The dimming control data for performing the dimming control for increasing or decreasing the light output of ...
₁ ... is given this dimming control data. On the other hand, the plurality of illumination units 5 ₁ adjust the light output of the light source based on the dimming control data given from the control unit 2. That is, if the value of the illuminance data is lower than the predetermined illuminance, the control unit 2 creates the dimming control data for increasing the light output of each illuminating unit 5 ₁ ... is higher than a predetermined illuminance is give to the respective illumination section 5 ₁ ... produce a dimming control data, such as to reduce the light output of the lighting part 5 ₁ ....

By the way, as described above, the illumination of this embodiment is
The lighting device is used in a room such as an office where any work is performed.
Arranged in space, at least the illuminance detection unit 1 and a plurality of lights
Part 5 ₁Is installed on the ceiling. Lighting unit 5₁... is usually
Like fluorescent lighting and incandescent lighting,
Has a well-known configuration that can change the light output of light sources such as incandescent lamps.
To do. And in this embodiment, the ceiling surface
The illuminance detector 1 installed in the
The average illuminance on the work surface (top surface) of the placed work desk is
Each lighting unit 5 so that the illuminance is constant₁Adjust the light output of ...
To obtain a comfortable visual environment (for example, an environment that is easy on the eyes).
You can

However, as described in the conventional example, when the desk top surface is momentarily illuminated by the outside light such as the daylight, the detection output of the illuminance detecting section 1 is sudden and instantaneous. Therefore, if dimming control of the illuminating units 5 _{1 is} followed by such a rapid and instantaneous change in illuminance, the light output of the illuminating units 5 ₁ ... The flicker of the illuminating parts 5 ₁ occurs, resulting in an unfavorable visual environment. Therefore, in the present invention, when the detection output of the illuminance detection unit 1 changes abruptly and instantaneously, the illuminance data does not include such abrupt and instantaneous change. , so as to include only relatively gentle illumination changes as illuminance data, to prevent the flicker in the lighting unit 5 ₁ ..., as described above occurs, so that a comfortable visual environment is obtained.

That is, as shown in FIGS. 2 and 3, in this embodiment, the control unit 2 controls the detection signal of the illuminance detection unit 1 based on the timing signal from the timer unit 4 at a constant sampling period (in this embodiment, The sampling data L (t ₁ ), L (t ₂ ) ...
Is getting Then, as shown in FIGS. 4 and 5, the control unit 2 causes all (N pieces) of the sampling data L within a predetermined period (hereinafter, this period is referred to as a calculation period).
(T ₁ ), L (t ₂ ) ... are rearranged in descending order, and the remaining sampling data L (t ₁ ), L (t ₂ ) ...
(N-A-B-number) average value L calculated _AV (n) is of an average value L _AV of the sampling data (n) of the calculation period K
It is the representative value of the sampling data in _n (see FIG. 2). That is, when the average value of all the sampling data is taken, an instantaneous noise-like change in the detected output is also included, which causes the flicker of the optical output of the illumination units 5 ₁ .

Further, a certain calculation period K _n and a subsequent calculation period K _{n + 1} are set to overlap each other with a shift of a sampling period (1 second). That is, the oldest sampling data in the computation period K _n have obtained all the sampling data of the computation period K _{n + 1} by adding the newest sampling data with discarding (earliest sampling data), the operation The illuminance data (representative value) corresponding to the period K _n ... Is obtained in synchronization with the sampling cycle. In the present embodiment, the calculation period K _n ... Is set to 30 seconds and 30 pieces of sampling data are calculated to calculate the average value L _AV . However, the sampling cycle and the calculation period K _n ... It is not limited to the numerical values of the embodiment. Note that by appropriately setting the sampling cycle, it is possible to select how much temporal change in the detected output is excluded as an instantaneous change.

Further, the representative value (average value L _AV ) is adopted as the illuminance data within the calculation period K _n ... And the control unit 2 sets the value of the illuminance data (average value L _AV ) as a target. The dimming control data for performing the dimming control so as to approach the predetermined average illuminance on the desk surface is prepared. Then, the control unit 2 gives the dimming control data to dimming control the respective illuminating units 5 ₁ ... And increases / decreases the light output of the illuminating units 5 ₁ ... In accordance with the illuminance data to target the average illuminance on the desk surface. It is close to the predetermined illuminance.

According to the configuration of this embodiment, the remaining sampling data excluding A sampling data from the larger sampling data and B sampling data from the smaller sampling data L (t _n ) within a predetermined calculation period K _n . Since the average value of the data is used as the representative value of the detection output in the calculation period K _n ..., Even when the detection output of the illuminance detection unit 1 changes abruptly and instantaneously, as shown in FIG. Sampling data corresponding to such changes will be excluded from the calculation of the average value. As a result, the illuminance data includes only a relatively gradual change in illuminance, which prevents flickering from occurring in the illumination units 5 _1, ... And provides a comfortable visual environment. Even if daylight is inserted into the desk surface and the detection output of the illuminance detection unit 1 rises as described above, if the change is not an instantaneous change, it may be excluded from the calculation for calculating the average value. Needless to say Therefore, if you are using the outside light (daylight) to illuminate the top of the desk,
Since the light output of the illumination units 5 ₁ ... Is reduced by the control unit 2, it is not necessary to constantly increase the light output of the illumination units 5 ₁ ..., and energy can be saved.

As shown in FIG. 4 and FIG. 5, the sampling data L (t _n ) ... within the predetermined calculation period K _n ... was remaining the (n-a-B-number) sampling data L (t _n) of ... average value of the representative value of the calculated time period K _n ... detection output, for example, computation period K _n ... in the sampling data L The standard deviation σ of (t _n ) ... Is calculated and, for example, ± 2 from the average value of the sampling data L (t _n ) ...
The average value of the sampling data L (t _n ) ... Within the range of σ may be used as the representative value of the detection output during the calculation period K _n . By doing so, the sampling data L (t _n )
The number of sampling data L (t _n ) ... Excluded from the calculation of the average value can be adjusted according to the degree of variation of
It is possible to further reduce the influence of sudden and instantaneous detection output changes on the illuminance data. Alternatively, the median (median value) of the sampling data L (t _n ) within the calculation period K _n ... May be used as the representative value of the detection output during the calculation period K _n .

Further, the predetermined value obtained as in this embodiment
Calculation period K_nThe sampling data L (t_n) ...
Average value of_AVAgainst the past, up to 30 operations
Period K_nAverage value L within_AVAverage value of_AV’
The latest calculation period K_nIt may be a representative value in.
That is, the average value during a period of 60 seconds up from the present time
L_AV′ Will be the representative value. Or like this
Average value L _AVAverage value of_AV’And the latest calculation period
Interval K_nAverage value L of sampling data in_AVAnd
Compare and latest average value L_AVIs the past average value L_AVFrom '
If they are far apart (for example, past average value L_AV'Of 5
0% or less, or 130% or more), the past average value L
_AV'Is the latest calculation period K_nThe representative value in…
Otherwise, the latest average value L_AVThe calculation period K_nTo ...
It may be set as a representative value.

(Embodiment 2) The construction of this embodiment is the same as that of the first embodiment, the description of the common construction is omitted, and only the characteristic parts of this embodiment will be explained. That is, in this embodiment, as shown in FIG. 6 and FIG.
An upper limit value and a lower limit value are set for the detection output of the illuminance detection unit 1, and the control unit 2 cuts the detection output exceeding the upper limit value and the detection output lower than the lower limit value to detect the detection output above the upper limit value. Is compressed to the upper limit value, and the detection output below the lower limit value is compressed to the lower limit value. Furthermore, as shown in FIGS. 7 and 8, the integrated value L is obtained by integrating the detection output every cycle of about 1.5 seconds.
_The feature is that _i is a representative value in the integration period I _n .

Also in this embodiment, as in the case of the first embodiment, a certain integration period I _n and a subsequent integration period I _{n + 1} are set so as to be offset by the above period (1.5 seconds) and overlap. The illuminance data (representative value) in each integration period I _n ... Is obtained in synchronization with the above cycle. The detection output is integrated by setting the integration period to 60 seconds, but the cycle and the integration period are not limited to the numerical values of this embodiment.

Further, as in the first embodiment, as described above,
Typical value (integral value L_i) Is the illuminance within the above integration period
The value of this illuminance data (integrated
Value L _i) To bring the average illuminance on the desk surface closer to the target value.
The dimming control data for performing dimming control such as
2 and the illumination unit 5₁It controls the light output of ...
It That is, when the detection output of the illuminance detector 1 is La
Even if the average illuminance on the top surface is kept at 750 lux
For example, the control unit 2 ensures that the detection output of the illuminance detection unit 1 is always La.
Multiple lighting units 5₁The light output of ... is controlled.
Here, for example, if the detection output of the illuminance detection unit 1 is Lh or more,
The average illuminance on the top of the desk is 2000 lux or more,
The average illuminance on the desk surface when the detection output is Le or less is 300.
If it is less than lux, it is extremely high
It is preferable that the low illuminance state is not detected. There
In this embodiment, Lh is the upper limit value and Le is the lower limit value.
Each is set.

According to the configuration of the present embodiment, the upper limit value and the lower limit value are set for the detection output of the illuminance detection section 1, and the control section 2 outputs the detection output exceeding the upper limit value and the detection output lower than the lower limit value. Since the detection output above the upper limit value is compressed to the upper limit value and the detection output below the lower limit value is compressed to the lower limit value by cutting at, it seems that the illuminance data includes only a relatively moderate illuminance change. And the lighting unit 5 ₁ ...
It prevents flickering and provides a comfortable visual environment.

The integrated value L _i obtained as described above
On the other hand, the average value of the 10 integrated values L _i ... Of the integration period is obtained by going up in the past, and the average value is used as the representative value in the latest integration period I _n . The average value of the integrated values in different periods may be used as the representative value. (Third Embodiment) The configuration of this embodiment is the same as that of the first embodiment,
The description of the common configuration will be omitted, and only the characteristic features of this embodiment will be described. That is, in this embodiment, and it has the characteristics in that computation period K _n sampling data of the detection output in the L (t _n) ... depending on how the variation of the so as to adjust the operation time K _n. That is, if the sampling data having a relatively small value is concentrated toward the end of the operation period K _n , the control unit 2 shortens the subsequent operation period K _n , and conversely, if the value is a relatively large value. If the sampling data is concentrated toward the end of the calculation period K _n , the control unit 2 lengthens the calculation period K _n thereafter.

In this embodiment, the control unit 2 samples the detection output of the illuminance detection unit 1 at a sampling cycle of 0.5 seconds, and further, in the calculation period K _{n of} 60 seconds, as in the first embodiment. The average value L _AV is calculated, and this average value L _AV is used as the representative value of the sampling data in the calculation period K _n . In addition, a certain calculation period K _n and the subsequent calculation period K
It is set so that _{n + 1} and the sampling cycle are shifted by a double of the sampling period (1 second) and overlap.

Here, the calculation period K of 60 seconds_n… 1 in
20 pieces of sampling data are included. And
These 120 sampling data are arranged in descending order,
Sampling data with a relatively small value is the calculation period
K_nConcentrate more than a certain number (eg 10) towards the end of the
In this case, as shown in FIG.
A predetermined number of times (for example, 50 times) of the calculation period K_{n + 1}… 15
Shortened to seconds and average value L _AVIs calculated. However, the above
Calculation period K of 15 seconds until the number of times (50 times) is completed_n
Of the 30 sampling data in ...
The threshold sampling data has a predetermined number toward the end (for example,
If the number is 10 or more), the control unit 2 is
Calculation period K of descending_n... is returned to the original 60 seconds.

On the other hand, when the sampling data having a relatively large value out of the 120 sampling data is concentrated at a predetermined number (for example, 16) or more in the last part of the calculation period K _n , As shown in FIG. 9, the control unit 2 causes the calculation period K _{n + 1} ...
To 90 seconds to calculate the average value L _AV . However, among the 180 pieces of sampling data within the operation period K _n of 90 seconds until the above-mentioned predetermined number of times (60 times) is completed, the sampling data of a relatively small value is a predetermined number (eg 10 If more than one) is concentrated, control unit 2
Returns the subsequent calculation period K _n ... To the original 60 seconds.

By the way, in general, when the average illuminance of an illuminated surface such as a desk top is lowered by an external factor such as daylight, it is preferable to raise the average illuminance in a short time. It is not preferable in terms of the visual environment that the light output of the illumination units 5 ₁ ... Is quickly tracked when the average illuminance of the illuminated surface rises. Therefore, according to the configuration of the present embodiment as described above, if the sampling data having a relatively small value is concentrated toward the end of the calculation period K _n , the control unit 2 shortens the calculation period K _n. On the contrary, if the sampling data having a relatively large value is concentrated toward the end of the calculation period K _n , the control unit 2 lengthens the calculation period K _n , and thus the average illuminance of the irradiated surface decreases. Can be detected earlier, while the rise in average illuminance can be detected more slowly. As a result, the illumination unit 5 quickly follows the decrease in the average illuminance of the illuminated surface due to external factors.
_{It is possible} to increase the light output of ₁ ... And relatively slowly follow the rise of the average illuminance to decrease the light output of the illuminating section 5 ₁ so that a comfortable visual environment can be provided. it can.

(Embodiment 4) FIG. 10 is a block diagram of this embodiment.
It shows a figure. The basic configuration of this embodiment is the same as that of the first embodiment.
It is almost common and has a photodiode as a light receiving element.
From the illuminance detector 1 that detects the illuminance by
Control unit 2 for controlling the dimming of the illumination unit 5 based on the detection output
And a memo for storing various data as described later.
Section 3 and various settings as described below.
And a control unit 2 having a light source and a light source
A lighting unit 5 which is controlled to adjust the light output of the light source, and
And a distance measuring unit 6 for measuring the distance to the object.
It In addition, these lighting devices A ₁~ A₃Is shown in Figure 11.
Installed on the ceiling of a work space such as an office.
And illuminates the lower side with the light of the illumination unit 5, and
Therefore, the average illuminance on the illuminated surface to be detected approaches the target value.
As described above, the control unit 2 is based on the detection output of the illuminance detection unit 1.
Create dimming control data to increase the light output of the light source of the illumination unit 5.
Dimming control is performed to decrease.

By the way, in the office, a desk on which a person works is often placed, or a shelf is placed, and when the desk, the shelf and the floor of the office are compared, the state of each irradiated surface (upper surface) changes. Desks and floors are frequently used (see FIG. 12). For example, when a person works on the desk, another auxiliary light (such as a desk lamp or so-called task light) is used.
May be used. It is also possible to place objects with high reflectance (white paper, documents, etc.) or objects with low reflectance (blackish bags, briefcases, etc.) on the contrary. Even if the illuminance does not change, the detection output of the illuminance detection unit 1 changes significantly. In addition, a box or the like may be placed on the upper surface of the shelf from time to time, but in general, it is considered that things are rarely placed or moved in such a place (see FIG. 13). Therefore, if the detection output of the shelf upper surface by the illuminance detection unit 1 changes, it can be judged that the actual illuminance of the shelf upper surface has changed. Thus, even in the office, the place or the lighting devices A _{1 to} A ₃
The frequency of change in illuminance due to external factors varies depending on the type of object illuminated by.

In addition, a person on the desk surface where the work is performed must be
The lighting unit 5 can be used for severe and instantaneous changes in illuminance or reflectance.
If the optical output of the
On the contrary, the light output of the illumination unit 5 flickers, which is pleasant.
It is not possible to obtain a suitable visual environment. Therefore, this embodiment
Depending on the type of object illuminated by the illumination unit 5.
By changing the dimming control of the control unit 2, you can always enjoy comfortable viewing.
In order to obtain the environment, each lighting device A₁~ A
₃Each lighting device A by the distance measuring unit 6 of₁~ A ₃
Measure the distance to the desk, floor or shelf directly under
Estimate the type of object directly below from the measured distance
I have to.

For example, in FIG. 11, the illumination device A ₁
Since there is nothing immediately below, the distance measured by the distance measuring unit 6 is the distance Da from the ceiling to the floor surface. Also,
When the desk directly below the illumination device A ₂ is present, the distance to be measured by the distance measuring section 6 of the illumination device A ₂ is the distance Db next to the ceiling and the desk surface, similarly, immediately below the illumination device A ₃ If there is a shelf in, the distance measured by the distance measuring unit 6 of the lighting device A ₃ is the distance Dc from the ceiling to the upper surface of the shelf.
Here, Dc <Db <Da between the three distances Da to Dc.
It is easy to understand that the relationship of is established.

Here, the set distances D _{0 to} D ₄ in the vertical direction from the ceiling surface as shown in FIG. 11 are set by the setting unit 7 and stored in the memory unit 3 in advance. In the present embodiment, the distance to a position slightly above the floor surface is D ₀ , the distance to a position slightly lower than the desk top surface is D ₁ , the distance to a position slightly higher than the desk top surface is D ₂ , and the shelf top surface is The distance to a slightly lower position is D ₃ , and the distance to a position slightly higher than the upper surface of the shelf is D ₄
I am trying. Then, the distances Da to Dc measured by the distance measuring unit 6 of each of the lighting devices A _{1 to} A ₃ and the set distance D _0.
To D ₄ are compared in the control unit 2 and the distance D measured by the distance measuring unit 6 of the lighting devices A _{1 to} A ₃ is D.
_{If 0} <D, there is nothing directly underneath (nothing is placed on the floor), if D ₂ <D <D ₁ , there is a desk, and D ₄ <D If <D ₃ , it is estimated that there is a shelf. Then, for example, the lighting device A ₂ which is estimated to be the desk directly under the measurement result of the distance measuring unit 6 or the lighting which is estimated to illuminate the floor without anything under the lighting device A ₂ . In the control unit 2 of the apparatus A ₁ , as described in the first to third embodiments, the control unit 2 prevents the illuminance data from being affected by the rapid and instantaneous change in the detection output of the illuminance detection unit 1. Performing arithmetic processing. On the other hand, the control unit 2 of the illumination device A ₃ that those directly under them were estimated to be shelf, so as to control the dimming of the light output of the lighting unit 5 in accordance with the detected output of the illuminance detection section 1 .
That is, in the present embodiment, the control unit 2 performs the same control as in the first to third embodiments when the distance measured by the distance measuring unit 6 is equal to or greater than the predetermined distance (D ₂ <D).

According to the configuration of this embodiment, the distance measuring unit 6 measures whether or not the optical output of the illuminating unit 5 is made to follow a sudden and instantaneous change in the detection output of the illuminance detecting unit 1. Since it is determined by estimating the object that exists directly below from the distance, the illuminance of the illuminated surface (top surface or floor surface) of the illuminated object (such as the desk or floor) is set to the specified illuminance. Since the control unit 2 performs the dimming control only in the illumination devices A ₁ and A ₂ corresponding to the required types of objects, a comfortable visual environment can be efficiently realized.

By the way, as described in the first to third embodiments, a sudden and instantaneous change in the detection output is converted into the illuminance data by using the average value of the detection output of the illuminance detection unit 1 as the illuminance data. If it is not affected,
As shown in, there may be a case where a time difference (time lag) occurs in the change in the light output of the illumination unit 5 with respect to the change in the illuminance on the actual illuminated surface. Therefore, in the configuration of the present embodiment, the illumination devices A _{1 to} A _{3 are} calculated from the distance measured by the distance measuring unit 6.
If the target object immediately below is estimated and the estimated target object is a work such as a desk or a floor, the average of the detection outputs of the illuminance detection unit 1 as in the first to third embodiments. Instead of calculating the value to remove the effect of a sudden and instantaneous change, the control unit 2 does not create the dimming control data when the detected output is an instantaneous change within a predetermined time.
It is also possible to prevent the above-mentioned time lag from occurring.

(Embodiment 5) The construction of this embodiment is the same as that of the embodiment 4, and the description of the common construction is omitted and only the characteristic features of this embodiment will be explained. As described above, the illuminance detection unit 1 detects the intensity of light reflected from an object directly below, for example, a surface to be illuminated such as a desk, shelf, or floor (top surface or floor surface of desk). By doing so, the illuminance of the illuminated surface is indirectly detected. Therefore, due to the difference in the reflectance of the illuminated surface, the detection output of the illuminance detection unit 1 may differ even if the actual illuminance of the illuminated surface is the same. For example, when the surface to be illuminated has a very high reflectance, such as a stainless steel plate or white one, a detection output higher than the actual illuminance level is obtained, and conversely,
If the surface to be illuminated has a low reflectance, such as a dark carpet, only a detection output lower than the actual illuminance level can be obtained. If the surface to be illuminated is a desk, it is likely that various objects with different reflectances such as white paper or a black bag will be placed on the desk (the surface to be illuminated), and the reflectance will be frequent. Will change to. On the other hand, things are rarely placed or dismissed on tall shelves, and the reflectance hardly changes. However, if the light output of the illumination unit 5 is increased or decreased according to the detection output of the illuminance detection unit 1 without considering such a change in the reflectance of the illuminated surface, the actual illuminance on the illuminated surface is the target illuminance. It may also occur when it is not controlled.

Therefore, in this embodiment, the average reflectances Ra, Rb, Rc (Rb <Ra <of the surfaces to be illuminated (floor surface, desk top surface and shelf top surface) of objects such as floors, desks, and shelves in the indoor space.
Rc) is previously set and stored in the memory unit 3 by the setting unit 7, and the average reflection of the object estimated by the control unit 2 of each of the lighting devices A _{1 to} A ₃ is estimated according to the estimation result described in the fourth embodiment. The rates Ra to Rc are read from the memory section 3, and the detection output of the illuminance detection section 1 is corrected using these average reflectances Ra to Rc. That is, although the illuminance detected by the illuminance detection unit 1 of the illumination devices A _{1 to} A ₃ is not the actual illuminance on the illuminated surface, the detection output of the illuminance detection unit 1 is directly below the illumination devices A _{1 to} A ₃ . By correcting the average reflectances Ra to Rc of the target object, the value close to the illuminance of the actual target surface on the illuminated surface can be detected.

According to the configuration of this embodiment, each lighting device A ₁
~ Based on the estimation result of the object existing directly under A ₃ ,
By correcting the detection output of the illuminance detection unit 1 by using the average reflectances Ra to Rc of the illuminated surface of the object, a value close to the actual illuminance can be obtained, and appropriate dimming control is performed to make it comfortable. It is possible to obtain a good visual environment. It should be noted that, for example, the color and material of the illuminated surface of the object existing immediately below the illumination devices A _{1 to} A ₃ ,
Due to variations in the detection output of the illuminance detection unit 1 due to differences in reflectance due to surface conditions, etc., a plurality of lighting devices A ₁
There is also an advantage that it is possible to prevent the light output of A ₃ from unnecessarily varying.

(Embodiment 6) The configuration of this embodiment is the same as that of the fourth embodiment.
The description is omitted for common configurations
Only the characteristic parts of the embodiment will be described. Lighting equipment
Setting A₁~ A₃Lighting device A by the distance measuring unit 7 of₁~ A
₃For example, when measuring the distance to the object directly under
For example, lighting device A₁There is a floor just below
Since there are many cases where luggage is placed, as shown in FIG.
And the distance to the floor is Da₀Even when there are people
Is Da₁, When there is an object, Da₂And so on
The measurement distance changes and does not become constant. Also, lighting equipment
Setting A ₂There is a desk directly underneath, so things should be placed on the top of the desk.
Can occur frequently, the distance to the desk top is Db₀
Even if there is an object on the desk surface,
Distance is Db₁Changes to. Therefore, the distance measuring unit 1
The measured output is not constant as shown in Fig. 16 (a) and (b).
Instead, it will change frequently.

On the other hand, since the method of dimming control of the light output of the illumination unit 5 is changed according to the measurement distance of the distance measurement unit 7, if the measurement distance is complicatedly changed as described above, the light output of the illumination unit 5 is changed. May become unstable. Therefore, in the present embodiment, the data of the measured distance of the distance measuring unit 7 is stored in the memory unit 3 by the control unit 2, and even if the measured distance changes, if the temporal change is within a predetermined time. For example, the control unit 2 does not change the way of dimming control.

According to the configuration of this embodiment, when the change in the measured distance of the distance measuring unit 6 is a noise-like change for a short time, the control unit 2 estimates the object by the noise-like change. Since it is not performed, it is possible to prevent the light output of the illumination unit 5 from being unnecessarily dimming-controlled due to a noise-like change in distance. (Embodiment 7) The configuration of this embodiment is the same as that of Embodiment 4,
The description of the common configuration will be omitted, and only the characteristic features of this embodiment will be described.

By the way, the illuminance detecting unit 1 of the illumination device A ₁ to A ₃ are, because it detects the illuminance immediately below the lighting apparatus A ₁ to A ₃ from the ceiling side, the actual surface to be irradiated (e.g., desktop surface Lighting device A
Distance measuring unit 7 if the distance from _{1 to} A ₃ to the irradiated surface is different
The measurement output of changes in inverse proportion to the square of the distance (see FIG. 17). For example, in the state shown in FIG. 11, even if the floor surface, the desk top surface, and the shelf top surface have the same color, material, and reflectance, and have the same illuminance if converted to the same distance, the lighting device A ₁ distance to ~A ₃ Da, Db, D
Since c is Dc <Db <Da, the lighting devices A _{1 to} A ₁
The magnitude relationship among the detection outputs La, Lb, and Lc of the illuminance detector 1 of ₃ is La <Lb <Lc. Therefore, if the light output of the illumination unit 5 is dimming-controlled based on the detection outputs La, Lb, and Lc, it is appropriate for the illuminated surface (such as the desk top surface or floor surface) directly below each of the illumination devices A _{1 to} A _3. However, even if the illuminance on the upper surface of the shelf is adjusted to an appropriate illuminance, it is not practical.

Therefore, the present embodiment is characterized in that the detection output of the illuminance detecting section 1 is corrected based on the distance measured by the distance measuring section 7. That is, each lighting device A _{1 to} A
_In the control unit 2 of ₃ , the detection output value La of the illuminance detection unit 1
To Lc are corrected by multiplying the measured distance values Da to Dc by the distance measuring unit 7, and the illuminance data is calculated based on the corrected values.

In the configuration of the present embodiment, the detection output of the illuminance detecting section 1 is corrected by the measurement distance of the distance measuring section 7, so that a value closer to the actual illuminance on the surface to be illuminated can be detected. Moreover, the light output of the illumination unit 5 can be controlled to obtain a comfortable visual environment. (Embodiment 8) In this embodiment, based on the distance measured by the distance measuring unit 7 to the surface to be illuminated which is directly below the illumination devices A _{1 to} A ₃ , the object existing immediately below is estimated. 7
Different from the level of the detection output of the illuminance detection unit 1, the change width,
The control unit 2 determines which of the patterns set in the memory unit 3 by the setting unit 6 in advance and the detection output level and change width for each time zone, and each illumination device from the determination result. The feature is that it estimates the objects directly under A _{1 to} A ₃ .

As shown in FIG. 18, the respective lighting devices A _{1 to} A _1
3 of the memory unit 3 a detection output in every predetermined time of the illumination detection unit 1
When it is stored, the pattern of the temporal change of the detection output as shown in FIG. 19 is obtained. For example, in the lighting device A ₁ whose floor surface is directly below, since the distance from the lighting device A ₁ to the floor surface is large, the detection output of the illuminance detection unit 1 becomes a low level as a whole, and changes in the detection output are also compared. However, the detection output may change like noise due to occasional passage of people or temporary placement of objects (see (a) in the same figure). In addition, a lighting device A whose table surface is directly below
_{In 2} , the auxiliary light is used to increase the detection output extremely, or paper with high reflectance such as documents, or conversely with low reflectance such as a dark bag is placed on the desk surface. The detection output of the illuminance detection unit 1 changes frequently (see FIG. 7B). However, in the illuminating device A ₃ having the shelf upper surface directly below, the detection output of the illuminance detection unit 1 is high as a whole because the distance between the illuminated surface and the illuminating device A ₃ is the shortest, and the state change is small. The change in the detection output hardly appears and is extremely stable (see FIG. 7C).

Therefore, at a certain time zone (Tm to Te)
Typical detection output of the illuminance detector 1 corresponding to the illuminated surface
Such patterns are set as follows, for example. Pattern A: time zone Tm to Te, change width La of detection output
x ~ Lay Pattern B: time zone Tm to Te, change width Lb of detection output
x to Lby Pattern C: time zone Tm to Te, change width Lc of detection output
x to Lcy And these patterns A, B, and C are the floor, the desk,
It corresponds to a shelf and each lighting device A₁~ A₃Illuminance detector
In the control unit 2, the change pattern of the detection output of No. 1 is described above.
By judging which pattern A to C is applicable,
Lighting device A ₁~ A₃Since the object is estimated just below
is there. Then, depending on the estimated type of object,
For example, lighting device A that is estimated to have a desk directly underneath₂, And
It is estimated that the floor is illuminated with nothing underneath.
Lighting device A₁In the control unit 2 of FIG.
As described above, the output of the illuminance detector 1 is suddenly detected.
Control so that sudden and instantaneous changes do not affect the illuminance data.
The calculation processing is performed in the control section 2. On the other hand
Lighting device A estimated to be a shelf₃The control unit 2 of
The light output of the illumination unit 5 is adjusted according to the detection output of the degree detection unit 1.
Control.

In the configuration of this embodiment, the detection of the illuminance detecting section 1
The light output of the illumination unit 5 against sudden and instantaneous changes in output
The control unit 2 detects whether or not the force is to be followed by the illuminance detection unit 1.
The target object directly below is estimated from the pattern of change in output and output.
The object to be illuminated is determined by setting
Of the surface to be illuminated (top of the desk or floor) like a desk or floor.
Supports types of objects that require a certain illuminance
Illumination device A₁, A ₂Only in the
Because it is controlled, it is possible to efficiently realize a comfortable viewing environment.
it can.

(Embodiment 9) FIG. 20 is a block diagram showing the configuration of the present embodiment, which is common to Embodiment 4 except that a human body detection unit 8 for detecting the presence or absence of a human body is provided. The same reference numerals are given to the portions and the description thereof will be omitted. Only the characteristic portions of the present embodiment will be described.

In this embodiment, the control unit 2 controls the illumination unit 5 to the illumination unit 5 only when the human body detection unit 8 detects the presence of a person in the detection area below the illumination devices A _{1 to} A _3. The feature is that the dimming control as described in 1 to 8 is performed. That is, when the human body detection unit 8 detects the presence of a person in the detection area, the human body detection output is given to the control unit 2. On the other hand, the control unit 2 performs the processing described in the first to eighth embodiments only when the human body detection unit 8 provides the human body detection output. That is, when there is no person in the detection area, it is not necessary to bring the illuminance of the illuminated surface close to the target value.

In the configuration of this embodiment, the control unit 2 controls the illumination unit 5 to adjust the light intensity only when the human body detection unit 8 detects a human body in the detection area. When it does not exist, the control unit 2 does not perform dimming control of the illuminating unit 5 by the detection output of the illuminance detecting unit 1 or the measurement distance of the distance measuring unit 6, and the dimming control is efficiently performed only when necessary. Can be

[0067]

According to the first aspect of the present invention, there are provided one or a plurality of illuminating means for illuminating the surface to be illuminated with light from the light source, an illuminance detecting means for detecting the illuminance, and an illuminance detecting means. The detected output is arithmetically processed to obtain illuminance data representing the illuminance on the illuminated surface, and based on the obtained illuminance data, the illumination means is dimming-controlled to increase or decrease the light output so that the illuminated surface has a predetermined illuminance. A lighting device having a control means for controlling a distance from the lighting device to an object.
From the measuring device and the lighting device that is determined according to the type of object
A storage means for storing distance data in advance is provided.
The step is stored in the memory and the distance measured by the distance measuring means.
If the types of objects are compared by comparing the distance data
In particular, when the object is of a specific type, the illuminance data is subjected to arithmetic processing so that the illuminance data does not include an instantaneous change of the detection output of the illuminance detection means that is shorter than a predetermined time .
It is necessary to set the illuminance on the illuminated surface to the specified illuminance among the objects
Only control the lighting means that corresponds to the type of object in question.
The steps can be controlled for dimming to efficiently create a comfortable viewing environment.
In addition, the illuminance on the illuminated surface may change due to the daylight being illuminated on the illuminated surface, or another object being placed on the illuminated surface to change the reflectance. However, if the change is an abrupt and instantaneous change that is shorter than a predetermined time, the control means does not change the illuminance of the illuminated surface by controlling the illumination means with respect to such a change. The illuminance of the illuminated surface can be always maintained at a predetermined illuminance, and the flicker of the light output can be prevented, so that a comfortable visual environment can be obtained. The invention of claim 2 is an optical system.
1 to a plurality of sources for irradiating the surface to be illuminated with light from the light source
Illumination means, illuminance detection means for detecting illuminance, and
The detection output from the degree detection means is arithmetically processed to the irradiated surface.
The illuminance obtained while obtaining the illuminance data representing the illuminance
Illuminate the illuminated surface based on the data so that the illuminance is
Equipped with a control unit that controls the brightness of the light unit to increase or decrease the light output
The lighting device is a lighting device that is determined according to the type of object.
Data indicating the characteristics of the temporal change in the detection output of the degree detection means
Is stored in the storage means in advance, and the control means controls the illuminance detection means.
The characteristics of the temporal change of the detection output are stored in the storage means.
While distinguishing the object by comparing with the data
Detection of illuminance detecting means when the object is a specific type
Illumination data shows instantaneous changes that are shorter than the specified output time.
Since the calculation processing that is not included is performed, the object to be illuminated
It is necessary to set the illuminance on the surface to be illuminated to a predetermined level among objects.
The control means adjusts only the lighting means corresponding to different types of objects.
The light can be controlled and a comfortable viewing environment can be realized efficiently.
It is also possible to irradiate the illuminated surface with daylight,
If another object is placed on the illuminated surface and the reflectance changes,
Even if the illuminance on the irradiation surface changes, the change does not
When the change is abrupt and momentary that is shorter than the fixed time
The control means controls the lighting means against such changes.
The illuminance of the illuminated surface does not change and the illuminated surface
The illuminance can always be kept at the specified level, and
You can prevent flickering in the output and obtain a comfortable viewing environment.
The effect is that you can do it.

According to the third aspect of the present invention, the control means samples the detection output of the illuminance detecting means, calculates a representative value of the sampling data within a predetermined period, and uses this representative value as the illuminance data. Therefore, it is possible to easily obtain the illuminance data that does not include a short and rapid change in the detection output. According to the invention of claim 4 , the control means samples the detection output of the illuminance detecting means, integrates the sampling data within a predetermined period, and uses the integrated value as the illuminance data. There is an effect that it is possible to easily obtain illuminance data that does not include a change in a typical detection output.

According to a fifth aspect of the present invention, the result obtained by the control means performing the arithmetic processing of the value obtained by arithmetic processing of the sampling data within the predetermined period and the other values within the plurality of predetermined periods is performed. Since the illuminance data is used, there is an effect that it is possible to easily obtain illuminance data that is shorter than a predetermined time and that does not include a sudden change in detection output.

According to the sixth aspect of the invention, the control means sets the upper limit value and the lower limit value as the sampling data when the sampling data is equal to or more than the predetermined upper limit value or less than the predetermined lower limit value. With respect to an unnecessarily high illuminance that exceeds the value and a low illuminance that falls below the lower limit, it is possible to obtain a comfortable visual environment without performing the dimming control of the illumination unit by the control unit.

According to a seventh aspect of the invention, the control means removes a predetermined number from the sampling data having the largest value and the smallest value among the sampling data within the predetermined period in the order of magnitude of the values, and removes the remaining sampling data. Since the representative value is calculated through the arithmetic processing, there is an effect that it is possible to easily obtain illuminance data that is shorter than a predetermined time and that does not include a sudden change in the detected output.

In the invention of claim 8 , the control means concentrates the sampling data having a relatively small value or the sampling data having a relatively large value among the sampling data within the predetermined period toward the end of the predetermined period. If the sampling data of a relatively small value is concentrated toward the end of the predetermined period, the subsequent predetermined period is shortened and the sampling data of a relatively large value is determined. When the concentration is concentrated toward the end of the predetermined period, the subsequent predetermined period is made longer, so that the change in the direction in which the illuminance decreases with respect to the change in the illuminated surface due to external factors other than the illumination means. Can be detected quickly, and changes in the direction of increasing illuminance can be detected slowly.As a result, when the illuminance of the illuminated surface decreases, the light output of the illuminating means increases rapidly and The light output of the illumination means to follow slowly when the illuminance is increased is reduced, there is an effect that it is possible to obtain a comfortable visual environment.

[0073]

[0074]

According to a ninth aspect of the present invention, the human body detecting means for detecting the presence or absence of the human body is provided, and the control means performs the dimming control of the illumination means only when the human body detecting output from the human body detecting means is given. When there is no light, the control means does not perform the dimming control of the illumination means, and the dimming control can be efficiently performed only when necessary.

[0076]

[0077]

[Brief description of drawings]

FIG. 1 is a block diagram showing a first embodiment.

FIG. 2 is an explanatory diagram for explaining an operation of the above.

FIG. 3 is an explanatory diagram for explaining the operation of the same.

FIG. 4 is an explanatory diagram for explaining an operation of the above.

FIG. 5 is an explanatory diagram for explaining an operation of the above.

FIG. 6 is an explanatory diagram for explaining the operation of the second embodiment.

FIG. 7 is an explanatory diagram for explaining an operation of the above.

FIG. 8 is an explanatory diagram for explaining the operation of the above.

FIG. 9 is an explanatory diagram for explaining the operation of the third embodiment.

FIG. 10 is a block diagram showing a fourth embodiment.

FIG. 11 is an explanatory diagram for explaining the operation of the above.

FIG. 12 is an explanatory diagram for explaining an operation of the above.

FIG. 13 is an explanatory diagram for explaining the operation of the above.

FIG. 14 is an explanatory diagram for explaining the operation of the above.

FIG. 15 is an explanatory diagram for explaining the operation of the sixth embodiment.

FIG. 16 is an explanatory diagram for explaining the operation of the above.

FIG. 17 is an explanatory diagram for explaining the operation of the seventh embodiment.

FIG. 18 is an explanatory diagram for explaining the operation of the eighth embodiment.

19A to 19C are explanatory views for explaining the operation of the same.

FIG. 20 is a block diagram showing a ninth embodiment.

[Explanation of symbols]

1 Illuminance detector 2 control unit 3 memory section 4 Timer section 5 Lighting section

─────────────────────────────────────────────────── ─── Continuation of the front page (72) Rei Horiguchi Rei Horiguchi 1048 Kadoma, Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd. (72) Takeyuki Suzuki 1048 Kadoma Kadoma City, Osaka Prefecture Matsushita Electric Works Co., Ltd. (56 ) References JP-A-2-66878 (JP, A) JP-A 1-289094 (JP, A) JP-A-63-164582 (JP, A) Actually open Sho-63-73890 (JP, U) Actually open Sho 63-99426 (JP, U) (58) Fields investigated (Int.Cl. ⁷ , DB name) H05B 37/02

Claims (9)

(57) [Claims] 1. A light source having one or a plurality of illumination means for irradiating a surface to be illuminated with light from the light source, an illuminance detecting means for detecting illuminance, and a detection output from the illuminance detecting means. The illuminance data representing the illuminance on the illuminated surface is obtained, and based on the obtained illuminance data, the illumination means is dimming-controlled so that the illuminated surface has a predetermined illuminance, and a control means for increasing or decreasing the light output is provided. A lighting device, from the lighting device
Distance measuring means for measuring the distance to the object, and the object
Data on the distance from the lighting device, which is determined according to the type, is stored in advance.
Storage means for storing, the control means is a distance measuring means
Compare the measured distance with the distance data stored in the storage means.
Compared to determine the type of object and identify the object
Lighting device short momentary change than the predetermined time of the detection output of the illuminance detecting means and performs arithmetic processing such as not included in the illuminance data when was the type. 2. A light source is provided to illuminate the surface to be illuminated with light from the light source.
1 to a plurality of illuminating means for illuminating, and an illuminance test for detecting illuminance
Output means and calculation output of detection output from this illuminance detection means
And obtain illuminance data that represents the illuminance on the illuminated surface.
Based on the illuminance data obtained from the
Light control to increase or decrease the light output
A lighting device having a control means for
Of the detection output of the illuminance detection means determined according to
Data indicating the characteristics is stored in advance in the storage unit, and the control unit
Stores the characteristics of the temporal change in the detection output of the illuminance detection means
By comparing the above data stored in the means
In addition to distinguishing, if the object is a specific type
Instantaneous shorter than the predetermined time of the detection output of the illuminance detection means
Change lighting device according to claim <br/> to perform arithmetic processing not included in the illuminance data. Wherein the control means calculates a representative value of the sampling data within a predetermined time period while sampling the detection output of the illuminance detection unit, according to claim 1 or 2, characterized in that the representative value and the illuminance data Illumination device described. 4. The control means outputs the detection output of the illuminance detection means.
Sampling and sampling within a predetermined period
The illumination device according to claim 1 or 2, wherein the data is integrated and the integrated value is used as illuminance data. 5. The control means controls sampling within a predetermined period.
The value obtained by arithmetic processing of the data is further calculated within a plurality of predetermined periods.
The result obtained by performing arithmetic processing with other values of
The lighting device according to claim 3 or 4 , wherein the lighting device is used as degree data . 6. The control means sets sampling data to a predetermined value.
Above the upper limit or below the specified lower limit
The lighting device according to claim 3, 4 or 5, wherein the upper limit value and the lower limit value are used as sampling data . 7. The control means controls the sampling of the largest value and the smallest value of the sampling data within a predetermined period.
Exclude a specified number from the data in order of magnitude.
Then, the remaining sampling data is calculated and the representative value is calculated.
Lighting device according to claim 3, characterized in that the output. 8. The control means comprises sampling within a predetermined period.
Sampling data with a relatively small value among the data
Or sampling data with a relatively large value is specified
Determine if you are concentrated towards the end of the period and compare
Sampled data with a relatively small value
If you are concentrated on one side, shorten the predetermined period thereafter
In both cases, relatively large sampling data is specified
If concentrated toward the end of the period, the following prescribed period
Claim 3-7, characterized by comprising a longer
The illumination device according to. 9. A human body detecting means for detecting the presence or absence of a human body is provided.
When the human body detection output from the human body detection means is given
9. The lighting device according to claim 1, wherein the control means controls the dimming of the lighting means .