摘要:
PROBLEM TO BE SOLVED: To provide a lighting device and a lighting fixture in which a safety circuit is surely operated at the time of abnormal lighting of an LED illumination lamp, and designing of the safety circuit is comparatively easy. SOLUTION: The lighting device is provided with an LED illumination lamp LED, an illumination lamp lighting circuit OC for making the LED illumination lamp to be lit by carrying out constant current control of switching actions of switching devices Q1, Q2, a safety circuit SC for stopping or reducing output of the illumination lamp lighting circuit in the abnormal lighting state of the lED illumination lamp, and a control means CC for controlling the LED illumination lamp to be lit without making the safety circuit to be acted during predetermined period from power supply input. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a lighting device and an illumination fixture in which power saving is aimed at as well as stability and reliability of circuit operation are improved by separating starting sequences into two control operation modes. SOLUTION: The lighting device is provided with an illuminating lamp LED, an illuminating lamp lighting circuit OC for lighting the illuminating lamp by switching operations of switching elements Q1, Q2, and a controlling means CC in which a starting sequence is equipped with control operation of a stand-by mode and a run mode and a control operation of the stand-by mode is started by putting on a power source and at least either of a power source watching or a dimming signal checking is carried out, and if the result shows that lighting of the illuminating lamp has a problem, the stand-by state is maintained, and if no problem, the mode is shifted to the run mode and in the control operation of the run mode, a driving control power source of the illuminating lamp lighting circuit is started up. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a lighting device capable of surely controlling light-dimming in response to external light even when a reflection rate is unexpectedly high and attaining energy saving. SOLUTION: The lighting device 10 includes a lighting-up circuit 18 capable of controlling light-dimming of light output of a light source 17, an illuminance detection section 14 for detecting reflected light from an illuminated surface by the light source 17 and converting the reflected light into voltage, a reference value memory section 29 for memorizing a detected value at the designated light output as a reference value, a target value memory section 29 for memorizing a target value by calculating the target value with an operation in response to the reference value, and a control section 31 for adjusting the light output of a lighting fixture 11 so as to make the detected value outputted by the illuminance detection section approximately coincide with the target value. Here, a limit value is set on the reference value or the target value. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To enhance an energy saving effect, in an illumination control system in which a plurality of luminaires are grouped and persons under each group are detected to control light-on of the luminaires. SOLUTION: This illumination control system 1 is provided with the plurality of luminaires 3 having a communication part, the respective luminaires 3 are communicated each other via the communication parts. The luminaires 3 are divided into person sensing control groups 28, 29. The person sensing control groups 28, 29 include respectively optional number of luminaires 3, and contain the at least luminaire 3 mounted with a person sensor 4. The luminaire 3 mounted with the person sensor 4 transmits a person sensed signal and a communication signal including a light-on holding time set optionally, to the luminaires 3 of the person sensing control group 28 or 29 same to the luminaire 3, when detecting the person. The luminaires 3 of the same person sensing control group are light-on-controlled at the light-on holding time in response to an area where the person is detected. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide an illuminating device with both energy saving and a high contrast ratio attained, as well as a liquid crystal display equipped with the same. SOLUTION: The illuminating device is arranged on a rear face of a display panel for irradiating light on the panel, and is provided with a plurality of independent divided light source units, and light-dimming units each making up a secondary light source unit constituted of one, or two or more light source units aligned. Individual luminance profiles of the light-dimming units on the display panel consist of a constant-luminance region and a varied luminance region, a light-emitting area of the former being 50% or more of a dimming region area occupied by the light-dimming units. COPYRIGHT: (C)2010,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To maintain an effect of attracting customers by key-point illumination even during busy times, and to aim at further energy saving in an illumination system for a store or the like. SOLUTION: The illumination system 10 includes a key illumination fixture 11 as well as a general illumination fixture 12, a head counting part 13, and a lighting control device 14. The lighting control device 14 selects a lighting mode based on head count information measured, and controls lighting of the key illumination fixture 11 and the general illumination fixture 12 in accordance with the lighting mode selected. At a busy-time lighting mode, an output of the general illumination fixture 12 is set lower than at off-season, and accordingly, an output of the key illumination fixture 11 is lowered so that an attracting effect on the customers is maintained. With this, further energy saving is achieved, while the attracting effect on the customers are maintained even at busy times. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a lighting control system for lighting a tunnel or a night-time road while omitting useless lighting and further saving on electric power. SOLUTION: The lighting control system is provided with: a plurality of luminaires each having a vehicle body detecting sensors; and a transfer signal line for transferring vehicle body detection information detected by the vehicle body detecting sensors between the luminaires. Each luminaire has a control part for controlling other luminaires via the transfer signal line in accordance with the vehicle body detection information detected by the vehicle body detecting sensors. When the vehicle body detecting sensors detect a vehicle body (S1), the control part controls the self-luminaire and other n-number front luminaires to be lit on (S2). When receiving the detection information from the transfer signal line, it sets a holding time for lighting the self-luminaire on (S5) and delivers the detection information in sequence until a counter number N as a set number minus one is zero. In this way, the n-number is set as a required minimum number to secure the visibility of a driver, thus omitting useless lighting and further saving on electric power. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a network-based lighting equipment remote monitoring and management system by which networked real-time monitoring and management tasks can be performed on one or more remotely-located lighting equipment systems by a user via the network system. SOLUTION: The network-based lighting equipment remote monitoring and management system provides equipment to be controlled with a network-based real-time monitoring and mangement function and the function of efficiently controlling power consumption of the fixtures to be controlled for saving energy and running costs and of warning an abnormality in real time. COPYRIGHT: (C)2009,JPO&INPIT
摘要:
PROBLEM TO BE SOLVED: To provide a light source device eliminating exchange (total replacement) of a currently used one to conserve environment and supplying optimum power to the light source to realize energy saving. SOLUTION: The device includes a box-shaped fixture 1 with an opening 1a formed in one surface, a reflecting plate 2 disposed so as to close the opening 1a, a ballast 3 disposed within the fixture 1 and having an input power source line 3a and output power source lines 3b, 3c connected to an AC power source AC; a power source section 4 disposed within the fixture 1 and having an input power source line 4a and output power source lines 4b, 4c connected to the AC power source AC; a socket 5 exposed to the surface of the reflection plate 2 and connected to leading ends of the output power source lines 4b, 4c; a light source section 6 exposed to the surface of the reflecting plate 2 and having electrode terminals 6b, 6c equipped with light-emitting diode elements and attached to both ends of a cylindrical glass tube 6a, and adapters 7 disposed in between the electrode terminals 6b, 6c and the socket 5. The input power source line 3a and the output power source lines 3b, 3c of the ballast 3 are electrically interrupted. COPYRIGHT: (C)2009,JPO&INPIT