JP2012014894A - Illumination system and light emission module - Google Patents

Abstract

PROBLEM TO BE SOLVED: To provide an illumination system that obtains a desired light emission state by a plurality of light emitting modules.SOLUTION: The illumination system 1 is provided with the plurality of light emitting modules 11 which have one or a plurality of light emitting elements 13 and are arranged on an installation surface, and a controller 30 for controlling light emission of the respective light emitting modules 11. The light emitting modules 11 each have an optical characteristic information holding part 17 which holds optical characteristic information of the light emitting modules 11, and the controller 30 changes a driving current of each light emitting module 11 based upon the optical characteristic information.

Description

  The present invention relates to a light emitting module having a light emitting element. The present invention also relates to an illumination system that controls each of a plurality of light emitting modules disposed on an installation surface to emit light.

  A conventional illumination system is disclosed in Patent Document 1. This illumination system includes a light emitting unit in which a plurality of panel-like light emitting modules are arranged in a matrix and are arranged side by side on an installation surface such as an indoor or outdoor wall surface. Each light emitting module is provided with a plurality of light emitting elements such as LEDs and OLEDs, and is connected to a power source via a control device. Each light emitting module is driven with a predetermined drive current to emit light by the control device, and indoor or outdoor lighting can be performed. Moreover, each light emitting module can be independently controlled by the control device, and desired light emitting states can be obtained at different positions on the installation surface.

JP-T-2007-536708 (pages 6 to 16, page 3a)

  However, according to the conventional illumination system, light emitting elements such as LEDs provided in the light emitting module have variations in brightness and color optical characteristics during light emission. For this reason, even if the same drive current (for example, rated current) is supplied from the control device to each light emitting module, variations in brightness and color occur in each light emitting module due to variations in the optical characteristics of the light emitting elements provided in each light emitting module. Arise. Therefore, the entire light emitting unit does not emit light uniformly.

  Also, different driving currents can be supplied according to the arrangement of the light emitting modules in the light emitting unit, and the light emitting unit can emit light by applying an illumination effect such as gradation. Even in this case, depending on the variation in the optical characteristics of the light emitting element, for example, the light emitting module in the bright position may emit light darkly, or the light emitting module in the dark position may emit light brightly.

  Accordingly, there is a problem in that the illumination system cannot obtain a desired light emission state due to variations in brightness and color among the plurality of light emitting modules due to variations in the optical characteristics of the light emitting elements.

  An object of this invention is to provide the illumination system which can obtain a desired light emission state with a some light emitting module. Another object of the present invention is to provide a light emitting module capable of obtaining a desired light emitting state.

  In order to achieve the above object, the present invention provides a lighting system in which a plurality of light emitting modules having one or a plurality of light emitting elements are arranged on an installation surface, and the light emission of each of the light emitting modules is controlled by a control device. An optical characteristic information holding unit for holding optical characteristic information of the light emitting module is provided, and the control device varies the drive current of each light emitting module based on the optical characteristic information.

  According to this configuration, the plurality of light emitting modules are arranged on an installation surface such as an indoor or outdoor wall surface. The light emitting module includes an optical characteristic information holding unit, and optical characteristic information such as brightness and color of the light emitting module itself is held in the optical characteristic information holding unit. Each light emitting module emits light when supplied with a drive current by a control device. At this time, the control device varies the drive current of each light emitting module based on the optical characteristic information of each light emitting module so that a desired light emitting state can be obtained.

  According to the present invention, in the illumination system configured as described above, the control device drives each light emitting module by deriving a driving current that obtains a predetermined brightness or color for each light emitting module from the optical characteristic information. It is characterized by doing.

  In the lighting system having the above-described configuration, the control device includes a master unit to which each light emitting module is connected and a slave unit provided in each light emitting module, and the master unit to the slave unit. The brightness or color for causing each light emitting module to emit light is instructed, and the light emitting module is driven by deriving a driving current corresponding to the instruction from the master unit by the slave unit.

  According to this configuration, the master unit connected to each light emitting module transmits light emission information of brightness or color when each light emitting module emits light. The light emission information is received by a slave unit provided in each light emitting module. The slave unit derives a drive current for obtaining the brightness or color of the light emission information based on the optical characteristic information of each light emitting module, and supplies the drive current to the light emitting element.

  In the illumination system configured as described above, the present invention further includes a position information holding unit that holds position information of each light emitting module, and the control device varies a driving current of each light emitting module according to the position information. It is characterized by. According to this configuration, when each light emitting module is installed on the installation surface, position information of each light emitting module is held in the position information holding unit. The control device can acquire position information from the position information holding unit and cause the light emitting module to emit light in different light emission states depending on the position of the light emitting module. Thereby, illumination effects such as gradation can be obtained.

  In the illumination system configured as described above, the present invention is characterized in that the position information holding unit includes a memory provided in each of the light emitting modules. According to this configuration, when each light emitting module is attached to the installation surface, position information is stored in a memory provided in each light emitting module.

  According to the present invention, in the illumination system configured as described above, the position information holding unit includes a memory that stores position information of a light emitting unit in which a plurality of the light emitting modules are connected.

  According to this configuration, when a light emitting unit in which a plurality of light emitting modules are connected is attached to the installation surface, position information of each light emitting unit is stored in a memory provided in the light emitting unit. Accordingly, the drive current of each light emitting module is varied by the control device using the position information of the light emitting unit stored in the memory as the position information of each light emitting module.

  Further, the present invention is characterized in that the illumination system having the above-described configuration includes a setting unit that is provided in each light emitting module and sets a position of each light emitting module on the light emitting unit.

  According to this configuration, when a light emitting unit in which a plurality of light emitting modules are connected is attached to the installation surface, position information of each light emitting unit is stored in a memory provided in the light emitting unit. The relative position of each light emitting module on the light emitting unit is set by a setting unit such as a dip switch provided on the light emitting module. The position of each light emitting module is held by a position information holding unit including a memory and a setting unit.

  According to the present invention, in the illumination system configured as described above, the position information holding unit includes a memory provided in the control device. According to this configuration, when each light emitting module is attached to the installation surface, position information of each light emitting module is stored in a memory provided in the control device.

  According to the present invention, in the illumination system configured as described above, a difference in luminance or chromaticity between adjacent light emitting modules is set to a predetermined range by the control device. According to this configuration, the control device detects adjacent light emitting modules based on the position information read from the position information holding unit, and supplies each light emitting module with a driving current in which the difference in luminance or chromaticity between adjacent light emitting modules is within a predetermined range. To do.

  According to the present invention, in the illumination system configured as described above, the optical characteristic information includes luminance information when a reference current is supplied to the light emitting module. According to this configuration, based on the luminance information held in the optical characteristic information holding unit, the control device supplies a driving current that can obtain a desired brightness to the light emitting module.

  According to the present invention, in the illumination system configured as described above, the light emitting element includes a plurality of light emitting units that emit different colors, and the optical characteristic information includes luminance information when a reference current is supplied to the light emitting module, and It is characterized by comprising chromaticity information. According to this configuration, the light emitting element has, for example, a plurality of light emitting units that emit RGB colors. Based on the luminance information and chromaticity information held in the optical characteristic information holding unit, the control device supplies the light emitting module with a driving current for obtaining desired brightness and color.

  According to the present invention, in a light emitting module including one or more light emitting elements, an optical characteristic information holding unit that holds optical characteristic information of the light emitting module is provided. According to this configuration, the light emitting module holds optical characteristic information such as brightness and color of the light emitting module itself in the optical characteristic information holding unit such as a memory. A drive current that is variable based on the optical characteristic information read from the optical characteristic information holding unit is supplied to the light emitting module.

  According to the present invention, in the light emitting module having the above-described configuration, the optical characteristic information includes luminance information when a current that is a reference is supplied.

  According to the present invention, in the light emitting module configured as described above, the light emitting element has a plurality of light emitting portions that emit different colors, and luminance information and chromaticity information when a current based on the optical characteristic information is supplied. It is characterized by comprising.

  According to the illumination system of the present invention, the light emitting module includes the optical characteristic information holding unit that holds the optical characteristic information, and the control device varies the drive current of each light emitting module based on the optical characteristic information. It can correct | amend and each light emitting module can be light-emitted. Therefore, a desired light emission state of the lighting system can be obtained.

  In addition, according to the light emitting module of the present invention, since the optical characteristic information holding unit for holding the optical characteristic information of the light emitting module itself is provided, the light emitting module can emit light with desired brightness and color by correcting the variation of the optical characteristics. .

The top view which shows the light emitting module of the illumination system of 1st Embodiment of this invention. The top view which shows the light emission unit of the illumination system of 1st Embodiment of this invention. The block diagram which shows the structure of the illumination system of 1st Embodiment of this invention. The front view which shows the house of the construction example of the illumination system of 1st Embodiment of this invention. The side view which shows the house of the construction example of the illumination system of 1st Embodiment of this invention. The top view which shows the 1st floor of the house of the construction example of the illumination system of 1st Embodiment of this invention The top view which shows the 2nd floor of the house of the construction example of the illumination system of 1st Embodiment of this invention The flowchart which shows operation | movement of the whole uniform light emission mode of the illumination system of 1st Embodiment of this invention. The flowchart which shows operation | movement of the gradation light emission mode of the illumination system of 1st Embodiment of this invention. The flowchart which shows operation | movement of the partial uniform light emission mode of the illumination system of 1st Embodiment of this invention. The block diagram which shows the structure of the illumination system of 2nd Embodiment of this invention. The block diagram which shows the structure of the illumination system of 3rd Embodiment of this invention.

  Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a plan view showing a light emitting module of the illumination system of the first embodiment. The illumination system 1 (see FIG. 3) includes a light emitting unit 10 (see FIG. 2) in which a plurality of light emitting modules 11 are connected.

  In the light emitting module 11, for example, a plurality of light emitting elements 13 are provided on a panel-shaped substrate 12 formed in a rectangle of 100 mm × 100 mm. There may be one light emitting element 13 provided in the light emitting module 11. The light emitting element 13 is composed of an LED or the like, and has a plurality of light emitting portions 13R, 13G, and 13B. The light emitting units 13R (red LED), 13G (green LED), and 13B (blue LED) emit red, green, and blue, respectively. The light emitting element 13 emits light with brightness and color corresponding to the drive current of each light emitting unit 13R, 13G, 13B. The light emitting element 13 may be an element such as an LED that emits monochromatic light.

  A lens 14 is disposed on the front surface of the light emitting element 13. The light emitted from the light emitting element 13 is converted into parallel light by the lens 14. Connection terminals 15 are provided on each side of the substrate 12. The adjacent light emitting modules 11 are electrically connected by the connection terminal 15. The base material 12 is provided with a dip switch 16 which will be described in detail later.

  FIG. 2 is a plan view showing the light emitting unit 10. The light emitting unit 10 connects a plurality of light emitting modules 11 in a matrix by a frame member 18 and is formed to have a size of, for example, 600 mm × 1200 mm. A cord portion 19 extending from the connection terminal 15 of the light emitting module 11 at the reference position (lower right in the figure) is led out to the light emitting unit 10. As described above, the adjacent light emitting units 10 are connected by the connection terminal 15. Thereby, power supply and data communication are performed with respect to each light emitting module 11 in the light emitting unit 10 via the cord part 19 and the connection terminal 15.

  The light emitting module 11 has a relative position in the light emitting unit 10 set by a dip switch 16 (setting unit: see FIG. 1). For example, the dip switch 16 is configured in two stages, and the column position is set by the upper stage and the row position is set by the lower stage.

  FIG. 3 is a block diagram showing the configuration of the illumination system 1. The illumination system 1 includes a control device 30 that controls one or a plurality of (three in the present embodiment) light emitting units 10. Each light emitting unit 10 and the operation unit 31 are connected to the control device 30. The control device 30 is connected to a commercial power supply and supplies a drive current to each light emitting module 11 of the light emitting unit 10 connected via the cord portion 19 (see FIG. 2). The operation unit 31 includes a remote controller having operation keys and dial keys, and performs an on / off operation of the lighting system 1 and a setting operation of a lighting effect.

  The light emitting unit 10 is installed on an installation surface such as an indoor or outdoor wall surface, and each light emitting module 11 emits light by the drive current supplied from the control device 30 to illuminate the indoor or outdoor. The light emitting unit 10 having a plurality of light emitting modules 11 is provided with a unit position storage unit 21. The unit position storage unit 21 is formed by a nonvolatile memory, and stores position information of the light emitting unit 10 with respect to a reference position (for example, the control device 30).

  Thereby, the position of each light emitting module 11 relative to the reference position is specified by the position information held in the unit position storage unit 21 and the dip switch 16. Accordingly, the unit position storage unit 21 and the DIP switch 16 constitute a position information holding unit that holds the position information of each light emitting module 11. The position information held in the unit position storage unit 21 and the dip switch 16 can be read out by the control device 30 via the code unit 19 (see FIG. 2). Further, the position information holding unit may be configured by only the dip switch 16 without the unit position storage unit 21.

  Each light emitting module 11 is provided with an optical characteristic storage unit 17 (optical characteristic information holding unit). The optical characteristic storage unit 17 is formed by a nonvolatile memory, and stores and holds optical characteristic information of the light emitting module 11 itself. The optical characteristic information of the light emitting module 11 includes an average value of the optical characteristic information of the plurality of light emitting elements 13.

  The optical characteristic information includes luminance information and chromaticity information in the RGB format, the Yxy format, and the like when the light emitting module 11 is driven with a rated current as a reference current. When the light emitting element 13 emits monochromatic light, the optical characteristic information includes luminance information and does not need to include chromaticity information.

  4 and 5 are a front view and a side view showing a house of an example of construction of the lighting system 1. Moreover, FIG. 6, FIG. 7 has shown the top view of the 1st floor of this house, and the top view of the 2nd floor. The unit of the numerical values in these figures is mm. The lighting system 1 has two light emitting units 10 (hereinafter sometimes referred to as “light emitting unit A” and “light emitting unit B”) installed on the first floor wall, and one light emitting unit 10 (hereinafter referred to as “light emitting unit B”). May be referred to as “light emitting unit C”). In addition, the control apparatus 30 is installed in the right back of the 1st floor seeing from the front.

  Table 1 shows an example of data stored in the optical characteristic storage unit 17 and the unit position storage unit 21.

  The optical characteristic storage unit 17 stores the ID of the light emitting module 11 and optical characteristic information. IDs “AA”, “AB”, and “AC” indicate the light emitting module 11 of the light emitting unit A. IDs “BA”, “BB”, and “BC” indicate the light emitting module 11 of the light emitting unit B. IDs “CA”, “CB”, and “CC” indicate the light emitting module 11 of the light emitting unit C. In order to facilitate understanding, the above ID is taken as an example, but each light emitting module 11 is given a unique ID such as a manufacturing number before the light emitting unit 10 is formed. For this reason, normally, the ID of each light emitting module 11 in the light emitting unit 10 becomes an irregular value.

  The optical characteristic information is represented by a specification (Yxy format) at the rated current, which is a reference current, and a difference value (ΔY, Δx, Δy) from the specification. The optical characteristic information (Y, x, y, ΔY, Δx, Δy) is a value obtained by performing predetermined arithmetic processing on the Yxy value calculated from the RGB values of the optical element 13. An absolute value (spec + difference value) at the rated current may be stored as the optical characteristic information.

  The unit position storage unit 21 stores position information of the light emitting unit 10 with respect to the installation position of the control device 30. The position information includes the coordinates and orientation of the light emitting unit 10. At this time, the left-right direction with respect to the installation position of the control device 30 is the Px direction (the right direction is the positive direction), the front-back direction is the Py direction (the rear direction is the positive direction), and the vertical direction is the Pz direction (the upper direction is the positive direction). It is said. The direction of the light emitting unit 10 is represented by an angle Pθ in the Px-Py plane with respect to the Px direction of the emission direction and an angle Pφ with respect to the vertical. For example, when the light emitting unit 10 is installed on the ceiling surface, Pφ = 90 °, and when it is installed on the floor surface, Pφ = 270 °.

  In the illumination system 1 having the above-described configuration, FIG. 8 is a flowchart showing the operation of the entire uniform light emission mode in which the entire light emitting units A, B and C emit light uniformly. In order to simplify the description, the operation of changing the brightness of the illumination light will be described. However, the brightness and color of the illumination light can be changed by the same operation.

  In step # 11, the operation waits until the brightness of the illumination is set by operating the operation unit 31. The brightness of the illumination can be switched to, for example, five levels depending on the volume or the like. When the brightness of the illumination is set, it is determined in step # 12 whether the brightness is at the maximum level. If the set brightness is not the maximum level, the process proceeds to step # 14.

  If the set brightness is at the maximum level, the rated current may be applied to each light emitting module 11 to illuminate at the specified luminance. However, the light emitting module 11 having a luminance different from the specification at the rated current is included. Therefore, in step # 13, the luminance difference value ΔY at the rated current is read from the optical characteristic storage unit 17 of the light emitting modules 11 of all the light emitting units 10, and the minimum luminance value is detected. For example, in Table 1 described above, the luminance difference value ΔY of the light emitting module 11 with ID “BA” is −100, which is the minimum value, and the difference value ΔY = −100 (luminance Y + ΔY = 2900) is acquired. .

  In step # 14, the luminance at the rated current is read from the optical characteristic storage unit 17 of one light emitting module 11. In step # 15, a drive current for obtaining a luminance corresponding to the set brightness is derived by calculation of the control device 30.

  For example, when the brightness is set to 50%, a drive current with a luminance of 50% of the specification (Y = 1500) is derived. That is, the drive current of the light emitting module 11 having a luminance (Y + ΔY) of 3000 is 50% of the rated current. The drive current of the light emitting module 11 having a luminance (Y + ΔY) of 3300 is 50% × f (3000/3300) of the rated current. The drive current of the light emitting module 11 having a luminance (Y + ΔY) of 2900 is 50% × f (3000/2900) of the rated current. Here, f is a predetermined coefficient determined by the drive current-light emission luminance characteristic of the light emitting element.

  At this time, if the brightness is set to 100% (maximum level), the control device 30 derives the drive current that is the minimum value of the brightness detected in step # 13. That is, in the example of Table 1, the drive current of the light emitting module 11 having a luminance (Y + ΔY) of 3000 is rated current × f (2900/3000). The drive current of the light emitting module 11 having a luminance (Y + ΔY) of 3300 is rated current × f (2900/3300). The drive current of the light emitting module 11 having a luminance (Y + ΔY) of 2900 is the rated current × f. As a result, supply of drive current exceeding the rated current is prevented.

  In step # 16, the drive current derived in step # 15 is supplied to the light emitting module 11, and the light emitting module 11 emits light. In step # 17, it is determined whether or not all of the light emitting modules 11 of the light emitting units A, B, and C have emitted light to become the last light emitting module 11. If it is not the last light emitting module 11, the process returns to step # 14, and steps # 14 to # 17 are repeated. And if the last light emitting module 11 is light-emitted, a process will be complete | finished. As a result, it is possible to supply each light emitting module 11 with a drive current in which variations in optical characteristics are corrected, and to cause each light emitting module 11 to emit light with uniform luminance.

  In the whole uniform light emission mode, light is emitted with uniform brightness regardless of the position of the light emitting module 11. For this reason, the illumination system 1 which omits the position information holding part which consists of the unit position memory | storage part 21 and the dip switch 16 may be sufficient.

  Next, FIG. 9 is a flowchart showing the operation of the gradation light emission mode in which the brightness is gradually changed according to the arrangement of the light emitting modules 11. When the gradation light emission mode is selected by operating the operation unit 31, the control device 30 sets the luminance for each position on the installation surface of the light emitting unit 10 in step # 21.

  For example, the luminance of the upper light emitting module 11 is set high, and the luminance of the lower light emitting module 11 is set low. At this time, if the maximum luminance value is set to 100% of the spec, there is a light emitting module 11 in which the spec luminance cannot be obtained at the rated current. For this reason, the maximum value of luminance is set to about 90% of the specification. Further, different gradation effects may be set by the operation unit 31 depending on the light emitting units A, B, and C.

  In step # 22, the luminance (Y + ΔY) at the rated current is read from the optical characteristic storage unit 17 of one light emitting module 11. In step # 23, the position information of the light emitting module 11 is acquired from the unit position storage unit 21 and the dip switch 16. In step # 24, a drive current for obtaining a luminance corresponding to the position of the light emitting module 11 is derived by calculation of the control device 30.

  For example, with respect to the light emitting module 11 at a position where the luminance is set to 90%, a driving current with which the luminance is 90% of the specification (Y = 2700) is derived based on the optical characteristics. For the light emitting module 11 at a position where the luminance is set to 50%, a driving current with which the luminance is 50% of the specification (Y = 1500) is derived based on the optical characteristics.

  In step # 25, the drive current derived in step # 24 is supplied to the light emitting module 11, and the light emitting module 11 emits light. In step # 26, it is determined whether or not all the light emitting modules 11 of the respective light emitting units A, B, and C emit light and become the last light emitting module 11. If it is not the last light emitting module 11, the process returns to step # 22, and steps # 22 to # 26 are repeated. And if the last light emitting module 11 is light-emitted, a process will be complete | finished. As a result, gradation light emission can be performed by supplying a driving current in which variation in optical characteristics is corrected to each light emitting module 11.

  Note that the light emitting module 11 may emit light with different luminance depending on the position, and an illumination effect other than gradation may be applied. Moreover, you may give the illumination effect which made the light emitting module 11 light-emit with a different brightness | luminance and color according to a position.

  Next, FIG. 10 is a flowchart showing the operation in the partial uniform light emission mode. When the entire light-emitting units A, B, and C emit light with the same brightness, the difference in brightness between the adjacent light-emitting modules 11 can be easily discerned by human eyes, but the difference in brightness between remote light-emitting modules 11 Is difficult to distinguish. For this reason, in the partial uniform light emission mode, the difference in luminance between the adjacent light emitting modules 11 is varied so as to be within a predetermined range, and control is not performed even if the luminance difference between the remote light emitting modules 11 is large. . Thereby, the load of the control apparatus 30 can be reduced.

  In step # 31, it waits until the brightness of illumination is set by operation of the operation part 31. FIG. When the brightness of the illumination is set, the luminance (Y, ΔY) at the rated current is read from the optical characteristic storage unit 17 of one light emitting module 11 in step # 32. In step # 33, the position information of the light emitting module 11 is acquired from the unit position storage unit 21 and the DIP switch 16.

  In step # 34, it is determined whether or not the difference in luminance between the adjacent light emitting modules 11 is within a predetermined value. If the difference in luminance with the adjacent light emitting module 11 is within a predetermined value, or in the case of the first light emitting module 11, the process proceeds to step # 37. In step # 37, the light emitting module 11 emits light with the drive current corresponding to the brightness set in step # 31. For example, when the brightness is 100%, a drive current having a rated current is supplied to the light emitting module 11, and when the brightness is 50%, a drive current having 50% of the rated current is supplied to the light emitting module 11.

  When the difference in luminance between the adjacent light emitting modules 11 is larger than a predetermined value, a drive current matching the luminance of the adjacent light emitting modules 11 is derived in step # 35. For example, when the brightness setting is 100% and the difference in luminance Y exceeds 100, the process proceeds to step # 35. If the luminance (Y + ΔY) of the current light emitting module 11 is 3300 and the luminance (Y + ΔY) of the adjacent light emitting module 11 is 2900, the driving corresponding to the luminance of the spec (Y = 3000) for the current light emitting module 11, for example. A current is derived. At this time, the current light emitting module 11 is supplied with a drive current lower than the rated current, and has a spec luminance.

  When the luminance Y of the current light emitting module 11 is 3000 and the luminance Y of the adjacent light emitting module 11 is 3300, for example, a driving current corresponding to the luminance of the spec (Y = 3000) is applied to the adjacent light emitting module 11. Derived. This prevents the drive current of the current light emitting module 11 from exceeding the rated current. At this time, the drive current of the adjacent light emitting module 11 that has already emitted light is changed.

  Therefore, in step # 36, it is determined whether or not the drive current of the adjacent light emitting module 11 has been changed. If the drive current of the adjacent light emitting module 11 has not been changed, the process proceeds to step # 37. When the drive current of the adjacent light emitting module 11 is changed, the process returns to step # 34, and the brightness difference between the adjacent light emitting module 11 and the adjacent light emitting module 11 is compared. Steps # 34 to # 36 are repeated.

  In step # 37, the drive current derived in step # 35 is supplied to the light emitting module 11, and the light emitting module 11 emits light. In step # 38, it is determined whether or not all the light emitting modules 11 of the light emitting units A, B, and C emit light and become the last light emitting module 11. If it is not the last light emitting module 11, the process returns to step # 32, and steps # 32 to # 38 are repeated. And if the last light emitting module 11 is light-emitted, a process will be complete | finished. Thereby, the adjacent light emitting module 11 can be light-emitted by the difference of predetermined brightness | luminance.

  The drive current may be varied so that the difference between the luminance (Y) and chromaticity (x, y) of adjacent light emitting modules 11 falls within a predetermined range by the same operation.

  According to the illumination system 1 of the present embodiment, the light emitting module 11 includes the optical characteristic storage unit 17 (optical characteristic information holding unit) that holds the optical characteristic information, and the control device 30 determines the drive current of each light emitting module 11 as the optical characteristic information. Therefore, each light emitting module 11 can emit light by correcting variations in optical characteristics. Therefore, when the illumination system 1 emits light uniformly, or when the illumination system 1 emits light by applying an illumination effect such as gradation, a light emission state of desired brightness and color can be obtained.

  In addition, since the driving current for obtaining a predetermined brightness or color for each light emitting module 11 is derived from the optical characteristic information by the control device 30 and each light emitting module 11 is driven, each light emitting module 11 can be easily set in a desired manner. Light can be emitted in a light emission state.

  The unit position storage unit 21 and the dip switch 16 constitute a position information holding unit that holds the position information of each light emitting module 11, and the control device 30 varies the drive current of each light emitting module 11 according to the position information. It is possible to apply illumination effects such as gradation to the plurality of light emitting modules 11 and to make the adjacent light emitting modules 11 emit light uniformly.

  Note that the light emitting modules 11 may be simply electrically connected, and the position information holding unit may be configured by only the unit position storage unit 21 without the dip switch 16. In this case, the control device 30 varies the drive current of each light emitting module 11 using the position information stored in the unit position storage unit 21 as the position information of each light emitting module 11.

  Accordingly, when the number of light emitting modules 11 constituting the light emitting unit 10 is small, for example, four, the light emitting modules 11 having the same position information are caused to emit light with the same brightness and color. Then, illumination effects such as gradation can be applied to the plurality of light emitting units 10 based on the position information, and the adjacent light emitting units 10 can emit light uniformly. Therefore, it is possible to obtain a lighting effect or the like with a simpler configuration.

  In addition, a unit position storage unit 21 including a memory that stores position information of the light emitting units 10 in which a plurality of light emitting modules 11 are connected, and a position of each light emitting module 11 provided on each light emitting module 11 is set. The position of each light emitting module 11 can be easily held.

  Further, in the partial uniform light emission mode, the difference in luminance or chromaticity of the adjacent light emitting modules 10 is set within a predetermined range by the control device 30, so that the drive current can be varied according to the optical characteristic information for only some of the light emitting modules 10. do it. Therefore, the burden on the control device 30 can be reduced.

  In addition, since the light emitting element 13 includes a plurality of light emitting units 13R, 13G, and 13B that emit different colors, and the optical characteristic information includes luminance information and chromaticity information at the rated current of the light emitting module 10, the light emitting module 10 is provided. Light can be emitted with desired brightness and color.

  When the light emitting element 13 emits monochromatic light, the optical characteristic information stored in the optical characteristic storage unit 17 is used as luminance information at the rated current of the light emitting module 10, and the light emitting module 10 emits light with a desired brightness. Can do.

  Next, FIG. 11 is a block diagram showing the configuration of the illumination system of the second embodiment. For convenience of explanation, the same parts as those in the first embodiment shown in FIGS. In the present embodiment, the unit position storage unit 21 and the dip switch 16 (both see FIG. 3) are omitted from the first embodiment, and a module position storage unit 20 is provided. Other parts are the same as those in the first embodiment.

  The module position storage unit 20 is provided in each light emitting module 10 and is formed by a nonvolatile memory. The module position storage unit 20 stores position information of the position of the light emitting module 11 with respect to a reference position (for example, the control device 30) by input at the time of construction or the like. That is, the module position storage unit 20 constitutes a position information holding unit that holds the position information of the light emitting module 10.

  The position of each light emitting module 11 is specified by the module position storage unit 20, and a drive current corresponding to the position is supplied. Therefore, similarly to the first embodiment, it is possible to perform an operation with an illumination effect such as a gradation light emission mode or an operation in a partial uniform light emission mode.

  Next, FIG. 12 is a block diagram showing the configuration of the illumination system of the third embodiment. For convenience of explanation, the same parts as those in the second embodiment shown in FIG. 11 are given the same reference numerals. In the present embodiment, the control device 30 is configured to be separated into a master unit 30a and a slave unit 30b with respect to the second embodiment. Other parts are the same as those of the second embodiment.

  The master unit 30a is connected to a commercial power source, and is connected to each light emitting unit 10 via the cord unit 19 (see FIG. 2). The slave part 30b is provided in each light emitting module 11, and communicates with the master part 30a. Further, the light emission information of brightness or color for causing each light emitting module 11 to emit light is instructed from the master unit 30a to the slave unit 30b. The light emitting module 10 is driven by deriving a driving current corresponding to light emission information of brightness or color instructed by the slave unit 30b from the master unit 30a.

  Also in this embodiment, the same operation as that of the second embodiment can be performed, and the same effect can be obtained. In addition, you may comprise the control apparatus 30 of 1st Embodiment isolate | separated into the master part 30a and the slave part 30b.

  In the first to third embodiments, the illumination system 1 includes the plurality of light emitting units 10, but the number of the light emitting units 10 including the plurality of light emitting modules 11 may be one. A plurality of light emitting units 10 having one light emitting module 11 may be provided.

  Moreover, although the illumination system 1 is provided with the rectangular panel-shaped light emitting module 11, the light emitting module 11 may be not only a rectangle but circular or polygonal shape. Further, the light emitting module 11 may be formed in a block shape instead of a panel shape.

  Further, although the position information of the light emitting modules 11 is held by the light emitting unit 10 or the light emitting module 11, the position information of each light emitting module 11 may be stored in a nonvolatile memory provided in the control device 30.

  ADVANTAGE OF THE INVENTION According to this invention, it can utilize for the illumination system which controls each of the several light emission module arrange | positioned on the installation surface, and makes it light-emit.

DESCRIPTION OF SYMBOLS 1 Illumination system 10 Light emitting unit 11 Light emitting module 12 Base material 13 Light emitting element 14 Lens 15 Connection terminal 16 Dip switch 17 Optical characteristic memory | storage part 18 Frame material 19 Code | cord | chord 20 Module position memory | storage part 21 Unit position memory | storage part 30 Control apparatus 31 Operation part

Claims (14)

  In an illumination system in which a plurality of light emitting modules having one or a plurality of light emitting elements are arranged on an installation surface and the light emission of each of the light emitting modules is controlled by a control device, the light emitting module is an optical that holds optical characteristic information of the light emitting module An illumination system comprising: a characteristic information holding unit, wherein the control device varies a drive current of each light emitting module based on the optical characteristic information.   2. The control device according to claim 1, wherein the control device drives each light emitting module by deriving a driving current capable of obtaining a predetermined brightness or color for each light emitting module from the optical characteristic information. Lighting system.   The control device includes a master unit to which each light emitting module is connected and a slave unit provided in each light emitting module, and brightness or color for causing each light emitting module to emit light from the master unit to the slave unit. The lighting system according to claim 2, wherein the light emitting module is driven by deriving a driving current corresponding to the instruction of the master unit by the slave unit.   The position information holding part which hold | maintains the positional information on each said light emitting module is provided, The said control apparatus varies the drive current of each said light emitting module according to the said positional information. The illumination system according to any one of the above.   The illumination system according to claim 4, wherein the position information holding unit includes a memory provided in each light emitting module.   The lighting system according to claim 4, wherein the position information holding unit includes a memory that stores position information of a light emitting unit in which a plurality of the light emitting modules are connected.   The illumination system according to claim 6, further comprising a setting unit that is provided in each of the light emitting modules and sets a position of each of the light emitting modules on the light emitting unit.   The illumination system according to claim 4, wherein the position information holding unit includes a memory provided in the control device.   The illumination system according to any one of claims 4 to 8, wherein a difference in luminance or chromaticity between adjacent light emitting modules is set to a predetermined range by the control device.   The illumination system according to any one of claims 1 to 9, wherein the optical characteristic information includes luminance information obtained when a reference current is supplied to the light emitting module.   The light-emitting element includes a plurality of light-emitting portions that emit different colors, and the optical characteristic information includes luminance information and chromaticity information when a reference current is supplied to the light-emitting module. The illumination system according to any one of claims 1 to 9.   A light emitting module comprising one or a plurality of light emitting elements, wherein an optical characteristic information holding unit for holding optical characteristic information of the light emitting module is provided.   The light emitting module according to claim 12, wherein the optical characteristic information includes luminance information when a reference current is supplied.   13. The light emitting device according to claim 12, wherein the light emitting element has a plurality of light emitting portions that emit different colors, and the optical characteristic information includes luminance information and chromaticity information when supplied with a reference current. Light emitting module.

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