JP2012222738A - Lighting system, mobile terminal, and control method and control program of the lighting system - Google Patents

Abstract

PROBLEM TO BE SOLVED: To secure stable visibility of an object for a lighting system of a mobile terminal while saving battery power.SOLUTION: A lighting system 10 provided in a mobile terminal 100 includes: a luminescent member that emits light; illuminance detection means that detects illuminance around the mobile terminal 100; time measuring means that measures time that takes for detection of the illuminance around by the illuminance detection means; illuminating means that performs illumination of the mobile terminal 100 by using electric power supplied from a power source; storage means that stores a luminescence property data including the property of the luminescent member; luminescence level calculation means that calculates luminescence level indicating the volume of luminescence accumulated in the luminescent member based on the luminescence property data stored in the storage means, the illuminance detected by the illuminance detection means and the time measured by the time measuring means; and control means that controls illumination of the illuminating means based on the illuminance detected by the illuminance detection means, and the luminescence level calculated by the luminescence level calculation means.

Description

  The present invention relates to an illuminating device, a portable terminal, a control method thereof, and a control program including a luminous member that emits light and a backlight that performs illumination using electric power supplied from a power source.

  In recent years, development of portable terminals that save power by using light emitted from a phosphorescent member has been performed. For example, in order to reduce power consumption due to illumination, there is known a portable terminal that uses an illuminance sensor to turn off a light when the surroundings are bright and to turn on a light in a dark place. In the portable terminal, since the light is always on in a dark place, the power of the battery is wasted, and even when the key operation unit is irradiated with the phosphorescent member, the phosphorescent member Since the light is not emitted, there is a problem that the visibility of the key operation unit is lowered.

  In order to solve the above-mentioned problem, there is known a foldable portable terminal that calculates the amount of light charge of a phosphorescent member and performs light charging on the phosphorescent member by driving the display unit to light as necessary (Patent Document 1). reference). Moreover, a portable terminal is known in which a predetermined time elapses after the light is turned on and the key operation unit is irradiated with a phosphorescent member when a predetermined time elapses (see Patent Document 2). Furthermore, there is known a foldable portable terminal in which light is stored in a phosphorescent member by causing a display unit facing the key operation unit to emit light (see Patent Document 3).

JP 2007-156892 A JP 2008-236630 A JP 2010-108772 A

  However, in the foldable portable terminal shown in Patent Documents 1 and 3, the display unit is turned on specially in order to store light in the phosphorescent member, so that the battery power is consumed more than necessary by turning on the display unit. There is a possibility. Moreover, in the portable terminal shown in the above-mentioned patent document 2, since irradiation with the phosphorescent member is performed according to the elapsed time after turning on the light, there is a possibility that irradiation of the phosphorescent member may be insufficient due to the characteristics of the phosphorescent member. is there.

  The present invention has been made in order to solve such problems, and the lighting device, the portable terminal, and the like that can stably ensure the visibility of the illumination target of the portable terminal while saving power of the battery. The main object is to provide a control method and a control program.

  One aspect of the present invention for achieving the above object is a phosphorescent member that is provided in a mobile terminal and emits light, illuminance detection means for detecting the illuminance around the mobile terminal, and the ambient illuminance by the illuminance detection means Storing time measurement means for measuring the time when detecting light, illumination means for illuminating the portable terminal using power supplied from a power source, and phosphorescent characteristic data including characteristics of the phosphorescent member Based on the storage means, the light storage characteristic data stored in the storage means, the ambient illuminance detected by the illuminance detection means, and the time measured by the time measurement means, the light storage member Calculated by the luminous intensity calculating means for calculating the luminous intensity indicating the degree of the accumulated light quantity, the ambient illuminance detected by the illuminance detecting means, and the luminous intensity calculating means. A serial phosphorescent degree, based on, and a control means for controlling the illumination of said illumination means, it is an illumination apparatus according to claim.

  On the other hand, according to one embodiment of the present invention for achieving the above object, a light storage member that is provided in a key operation unit or a display unit and emits light to illuminate the key operation unit or the display unit, and ambient illuminance are detected Illuminance detecting means, time measuring means for measuring time when the ambient illuminance is detected by the illuminance detecting means, illumination means for performing illumination using electric power supplied from a power source, and the phosphorescent member The storage means for storing the light storage characteristic data including the characteristics of, the light storage characteristic data stored in the storage means, the ambient illuminance detected by the illuminance detection means, and the time measured by the time measurement means Based on time, a luminous intensity degree calculating means for calculating a luminous intensity degree indicating a degree of the accumulated light amount accumulated in the luminous intensity member, the ambient illuminance detected by the illuminance detecting means, and the luminous intensity It said phosphorescent degree calculated by the calculation means, based on, and a control means for controlling the lighting of said illuminating means, may be a mobile terminal, characterized in that.

  According to another aspect of the present invention for achieving the above object, a step of detecting illuminance around the portable terminal, a step of measuring time when the ambient illuminance is detected, and a power supply Illuminating the portable terminal using the generated power, phosphorescence characteristic data including characteristics of a phosphorescent member provided in the portable terminal, the detected ambient illuminance, and the measured time Based on the above, based on the step of calculating the luminous intensity indicating the degree of the accumulated light amount accumulated in the luminous member, the detected ambient illuminance, and the calculated luminous intensity, And a step of controlling the lighting device.

  Furthermore, one embodiment of the present invention for achieving the above object is a phosphorescence including a process of measuring time when the illuminance around the portable terminal is detected and a characteristic of a phosphorescent member provided in the portable terminal. Based on the characteristic data, the detected ambient illuminance, and the measured time, a process for calculating a luminous intensity indicating the degree of the accumulated light amount accumulated in the luminous member, and the ambient illuminance A control program for an illuminating device that causes a computer to execute processing for controlling illumination of the mobile terminal using power supplied from a power source based on the calculated luminous intensity. May be.

  According to the present invention, it is a main object to provide an illumination device, a portable terminal, a control method thereof, and a control program capable of stably ensuring the visibility of an object to be illuminated of the portable terminal while saving power of the battery. And

It is a block diagram which shows schematic structure of the illuminating device which concerns on Embodiment 1 of this invention. It is a figure which shows schematic structure of the portable terminal which concerns on Embodiment 1 of this invention. It is a figure which shows an example of the phosphorescence characteristic data memorize | stored in memory. It is a flowchart which shows an example of the control processing flow by the illuminating device which concerns on Embodiment 1 of this invention. It is a flowchart which shows an example of the control processing flow by the illuminating device which concerns on Embodiment 2 of this invention.

Embodiment 1 FIG.
Embodiments of the present invention will be described below with reference to the drawings. FIG. 1 is a block diagram showing a schematic configuration of a lighting apparatus according to Embodiment 1 of the present invention. The lighting device 10 according to the first embodiment includes a key operation unit 11, a control device 12, an illuminance sensor 13, a phosphorescent paint unit 14, a key backlight 15, and a display backlight 16 provided in the mobile terminal 100. And a battery 17.

  The mobile terminal 100 is, for example, a mobile phone 100 such as a foldable type and a slide type (FIG. 2). The portable terminal includes, for example, an antenna 101, a wireless unit 102, a portable main unit 103, a receiver 104 that outputs sound, a display unit 105 made of liquid crystal or organic EL, a microphone 106 that inputs sound, and a key operation input. The key operation unit 11 is configured to be performed. The mobile phone 100 according to the first embodiment has a configuration and functions that a normal mobile phone has, but is well known, and thus detailed description thereof is omitted.

  The key operation unit 11 is provided with a plurality of operation keys (numeric keys, character keys, function keys, etc.) that can be pressed. The wireless unit 102 transmits / receives various signals such as a voice signal, a control signal, and a data signal to / from an external base station via the antenna 101 under the control of the control device 12.

  The illuminance sensor 13 is a specific example of the illuminance detection means. For example, the illuminance sensor 13 is provided in the mobile main body 103 of the mobile phone 100 and includes a photodiode or the like. The illuminance sensor 13 detects the illuminance around the mobile phone 100 at a predetermined cycle. The illuminance sensor 13 is connected to the control device 12, and outputs the detected illuminance around the mobile terminal 100 to the control device 12.

  The phosphorescent paint portion 14 is a specific example of a phosphorescent member, is a paint that is excited by ambient light and emits light for a certain period of time, and is formed on the front surface of the key operation portion 11.

  The key backlight 15 is a specific example of illumination means, and emits light using the power supplied from the battery (power source) 17 to illuminate the key operation unit 11. For example, an LED (Light Emitting Diode) is used for the key backlight 15 for the purpose of power saving of the battery 17. The key backlight 15 is connected to the control unit 12, and in accordance with a control signal from the control unit 12, the key backlight 15 is turned on to start lighting, or is turned off to stop lighting.

  The control device 12 indicates a time measuring unit 121 for measuring time, a memory 122 for storing phosphorescent characteristic data including the characteristics of the phosphorescent material of the phosphorescent paint unit 14, and the degree of accumulated light amount accumulated in the phosphorescent paint unit 14. A luminous intensity calculation unit 123 that calculates the luminous intensity and a control unit 124 that controls the key backlight 15 to an on state and an off state are provided.

  The time measurement unit 121 is a specific example of a time measurement unit, and measures time when ambient illuminance is detected by the illuminance sensor 13. The time measurement unit 121 may calculate the time based on a predetermined cycle (measurement interval) in which the illuminance sensor 13 detects illuminance.

  The memory 122 is a specific example of a storage unit, and includes, for example, a RAM described later. The memory 122 stores, for example, light storage characteristic data as shown in FIG. The phosphorescent characteristic data is data indicating changes in the luminous intensity of the phosphorescent paint portion 14 with respect to the elapsed time for each ambient illuminance. This is because the maximum value or amount of change of the luminous intensity that can be accumulated in the luminous paint portion 14 varies depending on the ambient illuminance. For example, if the ambient illuminance is low, the luminous intensity may decrease without being accumulated. For this reason, it has phosphorescence characteristic data for every surrounding illuminance like illuminance 0-100 [lx], ..., 1000-2000 [lx], 2000-3000 [lx].

  Further, by storing the phosphorescent characteristic data according to the phosphorescent paint to be used in the memory 122, it can be applied to any phosphorescent paint, and the material selection considering the cost and the color of the portable main body 103 of the portable terminal 100 can be applied. The color of the combined material can also be selected.

  The luminous intensity calculating unit 123 is a specific example of the luminous intensity calculating unit, and the luminous characteristic data stored in the memory 122, the ambient illuminance detected by the illuminance sensor 13, and the time measured by the time measuring unit 121. Based on the above, the luminous intensity of the luminous paint unit 14 is calculated. The luminous intensity calculating unit 123 outputs the calculated luminous intensity to the control unit 124 and the memory 122.

  More specifically, the luminous intensity degree calculating unit 123 selects the luminous characteristic data corresponding to the ambient illuminance detected by the illuminance sensor 13 (FIG. 3), the change graph of the selected luminous characteristic data, and the time measuring unit 121. Based on the time measured by the above, the luminous intensity of the luminous paint portion 14 is calculated. The luminous intensity calculating unit 123 outputs the calculated luminous intensity of the luminous paint unit 14 to the control unit 124 and the memory 122. The luminous intensity calculating unit 123 calculates the luminous intensity every time the illuminance sensor 13 detects ambient illuminance, that is, every predetermined period.

  The control unit 124 is a specific example of the control unit, and is based on the ambient illuminance detected by the illuminance sensor 13 and the luminous intensity of the luminous phosphor paint unit 14 calculated by the luminous intensity calculating unit 123. The illumination of the light 15 is controlled to be on or off.

  For example, when the ambient illuminance detected by the illuminance sensor 13 is equal to or lower than a predetermined illuminance and the luminous intensity of the luminous paint unit 14 calculated by the luminous intensity calculation unit 123 is equal to or less than a predetermined value, the control unit 124 Is dark and the light emission by the phosphorescent paint portion 14 is determined to be insufficient, and the illumination of the key backlight 15 is controlled to be in the ON state. Accordingly, even when the ambient illuminance is low and the illumination by the phosphorescent paint portion 14 is insufficient, the visibility of the user with respect to the key operation portion 11 is reliably maintained by turning on the key backlight.

  On the other hand, when the ambient illuminance detected by the illuminance sensor 13 is equal to or lower than the predetermined illuminance and the luminous intensity of the luminous paint unit 14 calculated by the luminous intensity calculating unit 123 is greater than the predetermined value, the control unit 124 Is dark and the light emission by the phosphorescent paint portion 14 is determined to be sufficient, and the illumination of the key backlight 15 is controlled to the off state. Thereby, even when the surrounding illuminance is low, the power consumption of the battery 17 is effectively reduced by turning off the key backlight 15 while ensuring the visibility of the user to the key operation unit 11 by the light emission of the phosphorescent paint unit 14. Can be suppressed.

  In addition, when the ambient illuminance detected by the illuminance sensor 13 is higher than the predetermined illuminance, the control unit 124 determines that the surrounding is bright and controls the illumination of the key backlight 15 to be in an off state. Thus, when the surrounding illuminance is high and bright, the power consumption of the battery 17 can be effectively suppressed by turning off the key backlight 15. The predetermined illuminance and the predetermined value are set in advance in, for example, a ROM or a RAM of the control device 12 described later.

  The control device 12 includes, for example, a CPU (Central Processing Unit) (not shown) that performs arithmetic processing, control processing, and the like, and a ROM (Read Only Memory) (not-ready) that stores arithmetic programs executed by the CPU, control programs, and the like. The hardware is configured around a microcomputer having a RAM (Random Access Memory) (not shown) for temporarily storing processing data and the like. The CPU, ROM, and RAM are connected to each other by a data bus or the like.

  Next, the control method of the illumination device 10 according to Embodiment 1 of the present invention will be described in detail. FIG. 4 is a flowchart showing an example of a control processing flow by the lighting apparatus according to the present embodiment. The control process shown in FIG. 4 is repeatedly executed every predetermined time.

  The illuminance sensor 13 detects the illuminance around the portable terminal 100 (step S101), and outputs the detected illuminance around the luminous intensity calculation unit 123 and the control unit 124 of the control device 12.

  The luminous degree calculation unit 123 is based on the luminous characteristic data stored in the memory 122, the ambient illuminance detected by the illuminance sensor 13, and the time measured by the time measuring unit 121. The luminous intensity is calculated (step S102), and the calculated luminous intensity is output to the control unit 124.

  The control unit 124 determines whether or not the surrounding illuminance detected by the illuminance sensor 13 is equal to or less than a predetermined illuminance (step S103).

  When the control unit 124 determines that the ambient illuminance detected by the illuminance sensor 13 is equal to or less than the predetermined illuminance (YES in step S103), the luminous intensity of the phosphorescent paint unit 14 calculated by the luminous intensity calculating unit 123 is predetermined. It is determined whether the value is equal to or less than the value (step S104). On the other hand, when the control unit 124 determines that the ambient illuminance detected by the illuminance sensor 13 is not less than or equal to the predetermined illuminance (NO in step S103), the control unit 124 controls the illumination of the key backlight 15 to be turned off (step S105). This control process ends.

  When the controller 124 determines that the luminous intensity of the luminous paint unit 14 calculated by the luminous intensity calculator 123 is equal to or less than a predetermined value (YES in step S104), the controller 124 controls the illumination of the key backlight 15 to be in an on state. (Step S106), this control process is terminated.

  On the other hand, when the control unit 124 determines that the luminous intensity of the luminous paint unit 14 calculated by the luminous intensity calculation unit 123 is not less than a predetermined value (NO in step S104), the control unit 124 controls the illumination of the key backlight 15 to be turned off. (Step S105), and this control process is terminated.

  As described above, in the illumination device 10 according to the first embodiment, the control unit 124 has the ambient illuminance detected by the illuminance sensor 13 equal to or less than the predetermined illuminance, and the phosphorescent paint unit 14 calculated by the luminous intensity calculation unit 123. When it is determined that the luminous intensity is equal to or less than the predetermined value, the illumination of the key backlight 15 is controlled to be on. Accordingly, even when the ambient illuminance is low and the illumination by the phosphorescent paint portion 14 is insufficient, the key backlight 15 can be turned on and the visibility of the user can be reliably maintained.

  On the other hand, when the control unit 124 determines that the ambient illuminance detected by the illuminance sensor 13 is less than or equal to a predetermined illuminance, and the luminous intensity of the phosphorescent paint unit 14 calculated by the luminous intensity calculation unit 123 is not less than or equal to a predetermined value, The illumination of the key backlight 15 is controlled to be turned off. Thereby, even when ambient illuminance is low, the key backlight 15 can be turned off and the power consumption of the battery 17 can be suppressed while ensuring the visibility of the user by the light emission of the phosphorescent paint portion 14. That is, it is possible to stably ensure the visibility of the illumination object of the mobile terminal 100 while saving power of the battery 17.

Embodiment 2. FIG.
The illuminating device 10 according to Embodiment 2 of the present invention is different from the illuminating device 10 according to Embodiment 1 above in that the phosphorescent paint portion 14 is formed on the display unit 105 of the mobile body 103. The display backlight 16 is a specific example of the illumination unit, and is built in the display unit 105, and emits light using the power supplied from the battery 17 to illuminate the display screen of the display unit 105. As the display backlight 16, for example, an LED or the like is used similarly to the key backlight 18. Further, the display backlight 16 is connected to the control unit 12, and according to a control signal from the control unit 12, the display backlight 16 is turned on to start lighting, or is turned off to stop lighting.

  According to the lighting device 10 according to the second embodiment, the power consumption of the battery 17 by the display backlight 16 can be effectively suppressed. In the illumination device 10 according to the second embodiment, the illuminance sensor 13 is provided in the vicinity of the display unit 105, and in the illumination device 10 according to the first embodiment, the illuminance sensor 13 is provided in the vicinity of the key operation unit 11. You may do it.

  Hereinafter, the control method of the illumination device 10 according to the second embodiment of the present invention will be described in detail. The illuminance sensor 13 detects the illuminance around the portable terminal 100 (step S201), and outputs the detected illuminance around the luminous intensity calculation unit 123 and the control unit 124 of the control device 12.

  The luminous degree calculation unit 123 is based on the luminous characteristic data stored in the memory 122, the ambient illuminance detected by the illuminance sensor 13, and the time measured by the time measuring unit 121. The luminous intensity is calculated (step S202), and the calculated luminous intensity is output to the control unit 124.

  The control unit 124 determines whether or not the surrounding illuminance detected by the illuminance sensor 13 is equal to or less than a predetermined illuminance (step S203).

  When the control unit 124 determines that the ambient illuminance detected by the illuminance sensor 13 is equal to or less than the predetermined illuminance (YES in step S203), the luminous intensity of the phosphorescent paint unit 14 calculated by the luminous intensity calculating unit 123 is predetermined. It is determined whether the value is equal to or less than the value (step S204). On the other hand, when the control unit 124 determines that the ambient illuminance detected by the illuminance sensor 13 is not less than or equal to the predetermined illuminance (NO in step S203), the control unit 124 controls the illumination of the display backlight 16 to be turned off (step S205). This control process ends.

  When the controller 124 determines that the luminous intensity of the luminous paint unit 14 calculated by the luminous intensity calculator 123 is equal to or less than a predetermined value (YES in step S204), the controller 124 controls the illumination of the display backlight 16 to be in an on state. (Step S206), the control process is terminated.

On the other hand, when the control unit 124 determines that the light storage degree of the light storage paint unit 14 calculated by the light storage degree calculation unit 123 is not equal to or less than a predetermined value (NO in step S204), the control unit 124 controls the illumination of the display backlight 16 to the off state. (Step S205), and this control process is terminated.
In combination with the first embodiment and the second embodiment, the key operation unit 11 and the display unit 105 are provided with the phosphorescent paint unit 14 so as to suppress the power consumption of the key backlight 15 and the display backlight 16. You may comprise.
In the second embodiment, other configurations are substantially the same as those of the first embodiment, and thus detailed description thereof is omitted.

The present invention is not limited to the above-described embodiment, and can be changed as appropriate without departing from the spirit of the present invention.
For example, in the above embodiment, the key operation unit 11 is provided with the phosphorescent paint unit 14 to suppress the power consumption of the key backlight 15, or the display unit 105 is provided with the phosphorescent paint unit 14 to reduce the power consumption of the display backlight 16. However, the present invention is not limited to this, and the phosphorescent paint portion 14 may be provided in an arbitrary illumination part of the mobile terminal 100 to suppress the power consumption of the backlight.

  In the above-described embodiments, the present invention has been described as a hardware configuration, but the present invention is not limited to this. In the present invention, for example, the processing shown in FIG. 4 or 5 can be realized by causing a CPU to execute a computer program.

  The program may be stored using various types of non-transitory computer readable media and supplied to a computer. Non-transitory computer readable media include various types of tangible storage media. Examples of non-transitory computer-readable media include magnetic recording media (for example, flexible disks, magnetic tapes, hard disk drives), magneto-optical recording media (for example, magneto-optical disks), CD-ROMs (Read Only Memory), CD-Rs, CD-R / W and semiconductor memory (for example, mask ROM, PROM (Programmable ROM), EPROM (Erasable PROM), flash ROM, RAM (random access memory)) are included.

  The program may also be supplied to the computer by various types of transitory computer readable media. Examples of transitory computer readable media include electrical signals, optical signals, and electromagnetic waves. The temporary computer-readable medium can supply the program to the computer via a wired communication path such as an electric wire and an optical fiber, or a wireless communication path.

  Furthermore, part or all of the above-described embodiments can be described as in the following supplementary notes, but is not limited thereto.

(Appendix 1)
A phosphorescent member that is provided on the portable terminal and emits light;
Illuminance detection means for detecting the illuminance around the portable terminal;
Time measuring means for measuring time when the ambient illuminance is detected by the illuminance detecting means;
Illuminating means for illuminating the mobile terminal using power supplied from a power source;
Storage means for storing luminous characteristic data including characteristics of the luminous member;
Based on the light storage characteristic data stored in the storage unit, the ambient illuminance detected by the illuminance detection unit, and the time measured by the time measurement unit, the data is accumulated in the light storage member. A luminous intensity calculating means for calculating the luminous intensity indicating the degree of the accumulated light intensity;
Control means for controlling illumination of the lighting means based on the ambient illuminance detected by the illuminance detecting means and the luminous intensity calculated by the luminous intensity calculating means. A lighting device.
(Appendix 2)
(Appendix 1)
The control means includes
When the ambient illuminance detected by the illuminance detection means is less than or equal to a predetermined illuminance and the luminous intensity calculated by the luminous intensity calculation means is less than or equal to a predetermined value, the illumination of the illumination means is controlled to be in an on state. And
When the ambient illuminance detected by the illuminance detecting means is less than or equal to a predetermined illuminance and the luminous intensity calculated by the luminous intensity calculating means is greater than a predetermined value, the illumination of the lighting means is controlled to be in an off state. And
When the ambient illuminance detected by the illuminance detection means is higher than a predetermined illuminance, the illumination of the illumination means is controlled to be in an off state.
A lighting device characterized by that.
(Appendix 3)
A lighting device according to (Appendix 1) or (Appendix 2),
The lighting device according to claim 1, wherein the phosphorescent member is a phosphorescent paint applied to a key operation unit or a display unit of the portable terminal.
(Appendix 4)
(Appendix 1) to (Appendix 3)
The illuminating characteristic data is data indicating a change in a luminous intensity of the luminous member with respect to an elapsed time for each ambient illuminance.
(Appendix 5)
The lighting device according to any one of (Appendix 1) to (Appendix 4),
The illumination device, wherein the illumination unit is a key backlight that illuminates a key operation unit of the portable terminal or a display backlight that illuminates a display unit.
(Appendix 6)
The lighting device according to any one of (Appendix 1) to (Appendix 5),
The illumination device, wherein the illumination means is an LED (Light Emitting Diode).
(Appendix 7)
A light storage member that is provided in the key operation unit or the display unit and emits light to illuminate the key operation unit or the display unit; and
Illuminance detection means for detecting ambient illuminance;
Time measuring means for measuring time when the ambient illuminance is detected by the illuminance detecting means;
Illuminating means for performing illumination using electric power supplied from a power source;
Storage means for storing luminous characteristic data including characteristics of the luminous member;
Based on the light storage characteristic data stored in the storage unit, the ambient illuminance detected by the illuminance detection unit, and the time measured by the time measurement unit, the data is accumulated in the light storage member. A luminous intensity calculating means for calculating the luminous intensity indicating the degree of the accumulated light intensity;
Control means for controlling illumination of the lighting means based on the ambient illuminance detected by the illuminance detecting means and the luminous intensity calculated by the luminous intensity calculating means. Mobile terminal.
(Appendix 8)
Detecting the illuminance around the mobile terminal;
Measuring the time when the ambient illuminance is detected;
Illuminating the mobile terminal using power supplied from a power source;
Based on the phosphorescence characteristic data including the characteristics of the phosphorescent member provided in the portable terminal, the detected ambient illuminance, and the measured time, the degree of the accumulated light amount accumulated in the phosphorescent member is determined. Calculating a luminous intensity to be indicated;
And a step of controlling the illumination based on the detected ambient illuminance and the calculated luminous intensity.
(Appendix 9)
Processing to measure the time when detecting the illuminance around the mobile device,
Based on the phosphorescence characteristic data including the characteristics of the phosphorescent member provided in the portable terminal, the detected ambient illuminance, and the measured time, the degree of the accumulated light amount accumulated in the phosphorescent member is determined. Processing for calculating the luminous intensity to be shown;
Based on the ambient illuminance and the calculated luminous intensity, a process for controlling the illumination of the mobile terminal using power supplied from a power source,
A control program for a lighting device, which causes a computer to execute

  INDUSTRIAL APPLICABILITY The present invention can be used for a lighting device that can reduce power consumption of a mobile terminal such as a mobile phone and extend the usage time.

DESCRIPTION OF SYMBOLS 10 Illuminating device 11 Key operation part 12 Control apparatus 13 Illuminance sensor 14 Luminescent sensor part 15 Key backlight 16 Display backlight 17 Battery 100 Portable terminal 121 Time measurement part 122 Memory 123 Luminous intensity calculation part 124 Control part

Claims (9)

A phosphorescent member that is provided on the portable terminal and emits light;
Illuminance detection means for detecting the illuminance around the portable terminal;
Time measuring means for measuring time when the ambient illuminance is detected by the illuminance detecting means;
Illuminating means for illuminating the mobile terminal using power supplied from a power source;
Storage means for storing luminous characteristic data including characteristics of the luminous member;
Based on the light storage characteristic data stored in the storage unit, the ambient illuminance detected by the illuminance detection unit, and the time measured by the time measurement unit, the data is accumulated in the light storage member. A luminous intensity calculating means for calculating the luminous intensity indicating the degree of the accumulated light intensity;
Control means for controlling illumination of the lighting means based on the ambient illuminance detected by the illuminance detecting means and the luminous intensity calculated by the luminous intensity calculating means. A lighting device. The lighting device according to claim 1,
The control means includes
When the ambient illuminance detected by the illuminance detection means is less than or equal to a predetermined illuminance and the luminous intensity calculated by the luminous intensity calculation means is less than or equal to a predetermined value, the illumination of the illumination means is controlled to be in an on state. And
When the ambient illuminance detected by the illuminance detecting means is less than or equal to a predetermined illuminance and the luminous intensity calculated by the luminous intensity calculating means is greater than a predetermined value, the illumination of the lighting means is controlled to be in an off state. And
When the ambient illuminance detected by the illuminance detection means is higher than a predetermined illuminance, the illumination of the illumination means is controlled to be in an off state.
A lighting device characterized by that. The lighting device according to claim 1 or 2,
The lighting device according to claim 1, wherein the phosphorescent member is a phosphorescent paint applied to a key operation unit or a display unit of the portable terminal. It is an illuminating device of any one of Claims 1 thru | or 3, Comprising:
The illuminating characteristic data is data indicating a change in a luminous intensity of the luminous member with respect to an elapsed time for each ambient illuminance. The illumination device according to any one of claims 1 to 4,
The illumination device, wherein the illumination unit is a key backlight that illuminates a key operation unit of the portable terminal or a display backlight that illuminates a display unit. The lighting device according to any one of claims 1 to 5,
The illumination device, wherein the illumination means is an LED (Light Emitting Diode). A light storage member that is provided in the key operation unit or the display unit and emits light to illuminate the key operation unit or the display unit; and
Illuminance detection means for detecting ambient illuminance;
Time measuring means for measuring time when the ambient illuminance is detected by the illuminance detecting means;
Illuminating means for performing illumination using electric power supplied from a power source;
Storage means for storing luminous characteristic data including characteristics of the luminous member;
Based on the light storage characteristic data stored in the storage unit, the ambient illuminance detected by the illuminance detection unit, and the time measured by the time measurement unit, the data is accumulated in the light storage member. A luminous intensity calculating means for calculating the luminous intensity indicating the degree of the accumulated light intensity;
Control means for controlling illumination of the lighting means based on the ambient illuminance detected by the illuminance detecting means and the luminous intensity calculated by the luminous intensity calculating means. Mobile terminal. Detecting the illuminance around the mobile terminal;
Measuring the time when the ambient illuminance is detected;
Illuminating the mobile terminal using power supplied from a power source;
Based on the phosphorescence characteristic data including the characteristics of the phosphorescent member provided in the portable terminal, the detected ambient illuminance, and the measured time, the degree of the accumulated light amount accumulated in the phosphorescent member is determined. Calculating a luminous intensity to be indicated;
And a step of controlling the illumination based on the detected ambient illuminance and the calculated luminous intensity. Processing to measure the time when detecting the illuminance around the mobile device,
Based on the phosphorescence characteristic data including the characteristics of the phosphorescent member provided in the portable terminal, the detected ambient illuminance, and the measured time, the degree of the accumulated light amount accumulated in the phosphorescent member is determined. Processing for calculating the luminous intensity to be shown;
Based on the ambient illuminance and the calculated luminous intensity, a process for controlling the illumination of the mobile terminal using power supplied from a power source,
A control program for a lighting device, which causes a computer to execute

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