JP2007005001A - Illumination device for emergency - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To provide an illumination device for emergency which can be lighted at normal time while securing lighting function in an emergency, capable of enhancing general purpose property. <P>SOLUTION: The illumination device can restrain a shortening of the life of the light emitting diode 7, 70 since the diode 7, 70 is lighted with minimum lowest luminance when used as a night light. Furthermore, the number of installation of the illumination device for emergency 1 is not necessary to increase, and safety at emergency can be secured since a light distribution changing means 8 changes light distribution so that the light distribution at emergency 101 becomes wider than that at normal lighting 100. Furthermore, at normal lighting, the device can be used as a suitable night light at a space used by a plurality of persons like a sick room since the device can illuminate a space of relatively narrow range comparing with emergency. Thus, the illumination device for emergency 1 having high versatility, fulfilling many required specifications can be obtained. <P>COPYRIGHT: (C)2007,JPO&INPIT

Description

  The present invention relates to an emergency lighting apparatus having a built-in emergency power supply.

  In general, as emergency lighting equipment, in the case of an emergency such as a power failure of an external power supply, or a dedicated type that lights a lamp at the time of inspection of a built-in emergency power supply (for example, see Patent Document 1), both emergency and normal use A combination type for lighting a lamp (see, for example, Patent Document 2) is known.

  The combined type is used as a base lighting during normal use, and is used to light up for a specified time at a low output of about 20 to 50% when the lighting level during normal use is 100% in an emergency. Is.

  On the other hand, as a light source of the dedicated emergency lighting fixture, a halogen light bulb is generally used. This is because it was preferable to reduce the ratio of the lighting fixtures facing from the ceiling surface, or the lighting fixtures protruding from the ceiling as much as possible.

In other words, since dedicated lighting fixtures are often not used as lighting fixtures, the lighting fixtures themselves are made as small as possible, and consideration is given to making the lighting fixtures inconspicuous. Therefore, a small halogen bulb that can be miniaturized with the instrument body has been used.
JP-A-4-147507 JP 2002-170424 A

  On the other hand, even if it is a dedicated type, as long as it is installed on the ceiling, convenience and versatility are enhanced if it can be used as a lighting fixture even during regular use.

  However, since the halogen bulb has a relatively short life, if it can be lit even during normal use, etc., and it is turned on and off repeatedly, it will reach the end of its life in a relatively short period of time, and it will not turn on in an important emergency. There was a risk of occurrence. Therefore, conventionally, in order to ensure the reliability of lighting in an emergency, the specification has been such that the halogen bulb is lit only in an emergency and is not lit at all in normal use.

  Further, even if an emergency lighting apparatus such as a conventional technique using a halogen bulb is configured so that it can be lit even during normal use, the emergency requirement specification must be given priority. That is, in an emergency, it is preferable that light is irradiated to a relatively wide area for safety. Therefore, even if it is used as a lighting fixture that can be lit even during normal use, only a relatively wide light distribution can be realized, and the versatility is low.

  The present invention has been made in view of the above, and it is an object of the present invention to provide an emergency lighting apparatus that can be turned on during normal use while ensuring the performance of turning on in an emergency, and can improve versatility. To do.

  According to the emergency lighting apparatus of claim 1, an apparatus main body provided with an irradiation opening; a light emitting diode provided to face the irradiation opening of the apparatus main body; and power supply from an emergency power supply when an external power supply is abnormal An emergency lighting circuit for turning on the light emitting diodes; a normal lighting circuit for lighting the light emitting diodes by supplying power from an external power source during normal use; and changing the light distribution emitted from the irradiation opening in emergency and normal use And a light distribution variable means.

  According to the emergency lighting apparatus of the second aspect, the light distribution variable means is characterized in that the light distribution in the emergency can be varied so as to have a wide angle as compared with the normal use.

  In the present invention and the following inventions, definitions and technical meanings of terms are as follows unless otherwise specified.

  The instrument main body may be an attachment wall that is embedded in, for example, a ceiling surface or a wall surface, or may be directly attached to the ceiling surface or the wall surface, and the configuration and mechanism are not particularly limited.

  The emergency power supply is a means for supplying power to the emergency lighting circuit for turning on the light emitting diode for a predetermined time, for example, when the external power supply fails or when the emergency power supply is inspected. An electric double layer capacitor or the like can be used as appropriate.

  Moreover, you may provide the charging circuit which charges an emergency power supply at the time of regular use. The charging circuit rectifies the commercial power supply to obtain a DC voltage, for example, and charges the emergency power supply. Note that the emergency power supply and the charging circuit may be built in the appliance body or may be separately installed.

  The emergency lighting circuit may be provided not only when the external power supply is abnormal, but also when checking the life of the emergency power supply or checking whether or not the light emitting diode is lit.

  The normal lighting circuit can be configured to light at a lighting level lower than the lighting level of the light emitting diodes that are lighted by the emergency lighting circuit when the light emitting diodes are lighted during normal use. Even if light emitting diodes that have a relatively long life compared to light bulbs are used as the light source, if they are lit in an overloaded state during normal use, they will have a short life. Reliability cannot be ensured. Therefore, during normal use, it is possible to extend the period until the light emitting diode reaches the end of its life by lighting at a lower level than in an emergency, so that the emergency equipment can be used as auxiliary lighting such as a night light. become able to.

  The light distribution variable means can vary the light distribution between normal use and emergency, but may be capable of appropriately varying the light distribution. That is, when it is not desired to change the light distribution between the normal use and the emergency, both the normal and emergency light distributions may be made constant.

  The operation of the present invention will be described. In normal use, the emergency power supply is charged through the charging circuit, for example, by supplying power from a commercial power supply. For example, when the power switch provided on the wall surface or the like is turned on outside the instrument body, power is supplied to the light emitting diode via the regular lighting circuit by the power supply of the commercial power supply, and the light emitting diode Light.

  On the other hand, in the event of an emergency, the power supply to the light emitting diode is switched from the commercial power supply to the emergency power supply, for example, by detection of the power failure detection means, and the power from the emergency power supply is supplied to the light emitting diode through the emergency lighting circuit. Then, the light emitting diode is turned on.

  The light distribution during normal use and emergency can be varied by the light distribution variable means. That is, for example, if the light distribution in an emergency is made wider than in a normal use, it is possible to illuminate a relatively wide space in an emergency, and thus it is possible to improve safety. On the other hand, during normal use, for example, a relatively narrow range of space can be illuminated as compared with an emergency, so that it can be used as an auxiliary light (nightlight) in a space where there are a plurality of people such as a hospital room.

  ADVANTAGE OF THE INVENTION According to this invention, by using a light emitting diode for the light source of an emergency lighting fixture, the emergency lighting fixture which is small as a whole and can be used also as a lighting fixture at the time of regular use can be obtained. Further, since the light distribution can be varied between emergency and normal use, a highly versatile emergency lighting apparatus that can satisfy a plurality of required specifications can be obtained even if it is small.

  According to the present invention, by using a light emitting diode as a light source of an emergency lighting fixture, it is possible to obtain an emergency lighting fixture that is small as a whole and can be suitably used as a lighting fixture even during normal use. it can. In addition, since the light distribution can be varied between emergency and normal use, a highly versatile emergency lighting apparatus that can satisfy a plurality of required specifications even if it is small can be obtained.

  FIG. 1 is a schematic explanatory view showing a circuit configuration of an emergency lighting apparatus according to an embodiment of the present invention. FIG. 2 is a partial longitudinal sectional view showing a state in which the emergency lighting apparatus 1 is disposed on a ceiling surface 2. 3 is a bottom view of the emergency lighting apparatus of FIG. 2, and FIGS. 4A and 4B are partial cross-sectional views enlarging the light distribution variable means 8, which is a main part of the emergency lighting apparatus 1 of FIG. FIG. 4 (a) shows a state during normal use, and FIG. 4 (b) shows an emergency.

  As shown in each drawing, the emergency lighting fixture 1 includes a cylindrical fixture main body 3 embedded in the ceiling surface 2, and illuminates the lower portion of the ceiling surface 2 in FIG. Yes.

  The emergency lighting device 1 has an annular outward flange 4 projecting integrally on the lower surface 3a of the device body 3 facing the lower side of the ceiling surface 2 in FIG. A pair of upper and lower belt-like locking springs 5 and 5 are fixed. The emergency lighting fixture 1 is fixed to the ceiling surface 2 by elastically holding the ceiling surface 2 in the vertical direction in FIG. 2 by the pair of locking springs 5 and 5 and the outward flange 4.

  As shown in FIG. 3, the emergency lighting fixture 1 is formed with a concave portion 6 having, for example, a circular irradiation opening that opens downward in FIG. 2 on the right side of the lower surface 3 a in the figure, and the bottom center of the concave portion 6. The light emitting diode 7 and the light distribution variable means 8 are disposed in the part.

  As shown in FIG. 4, the light-emitting diode 7 has, for example, a light emission efficiency of 50 lm / W and a long life of 40,000 to 60,000 hours, and the lens 73 includes a LED chip 72 mounted on the substrate 71. The LED unit 70 is provided. And the light from LED chip 72 irradiates below the ceiling surface 2 in FIG.

  As shown in FIG. 4, the light distribution variable means 8 includes an instrument body side circuit 81 including a primary transformer, an LED side circuit 82 including a secondary transformer provided so as to face the instrument body side circuit 81, LED The unit holding portion 83 is formed. That is, a primary transformer which is a saturable type and includes an iron core and a winding is directly electrically connected to a service lighting circuit 19 which will be described later. On the LED unit 70 side, a saturable type secondary transformer composed of an iron core and a winding is provided as described above.

  The LED unit holding part 83 is provided so as to have an area 84 within which the LED unit 70 can move up and down. Engagement step portions 85 and 86 that engage with the LED unit side circuit 82 and the substrate 71 are provided on the side opposite to the device body side circuit 81, respectively, and are positioned at substantially the same position as the irradiation opening of the device body 1. A light projection opening 87 is formed. The light projecting aperture 87 is formed to be substantially the same as or slightly larger than the maximum diameter of the lens 73.

  Further, as shown in FIG. 3, a battery housing portion 9 is disposed on the lower surface 3 a of the instrument body 3 on the opposite side of the light emitting diode 7, and the battery housing portion 9 is covered with an opening / closing lid 13. Yes. The opening / closing lid 13 is pivotally mounted at one end, for example, the right end in FIG. 3 by a hinge pin or the like (not shown), and a locking mechanism (not shown) is provided at the opening end on the left end side in FIG. By pressing the opening / closing lid 13 so as to close the opening of the housing recess 11, the opening / closing lid 13 is locked by a locking mechanism and closed, while the opening / closing button 14 is pressed upward in FIG. The latching state of the latching mechanism is released, and the opening / closing lid 14 is rotated around the hinge pin to open the housing recess 11.

  In FIG. 2, reference numeral 15 denotes a power terminal block, and in FIGS. 2 to 4, reference numeral 16 denotes an inspection button. When the check button 16 is turned on, a power failure detection signal simulating an external power failure is given to the power failure detection circuit from an inspection circuit, which will be described later. It is a push button switch for checking.

  FIG. 1 is a block diagram showing an electrical configuration of the emergency lighting apparatus 1. As shown in FIG. 1, the emergency lighting apparatus 1 has a power failure detection circuit 17, a charging circuit 18, and a regular lighting circuit 19 connected to a power terminal block 15 connected to an external power source such as a commercial power source (not shown). .

  The power failure detection circuit 17 gives a power failure detection signal to the switching circuit 21 that a power failure has occurred in the external power source when detecting that the voltage of the external power source applied to the power terminal block 15 is below a predetermined value for a predetermined time. It is.

  The charging circuit 18 converts alternating current from an external power source into direct current having a predetermined voltage, and supplies power to the battery 10 for charging. An emergency lighting circuit 20 is connected to the battery 10.

  The emergency lighting circuit 20 is a circuit for lighting the light emitting diode 7 with a specified illuminance (for example, 1 lx) for a specified time (for example, 20 to 30 minutes) using the battery 10 as a power source in the event of a power failure of the external power supply. The prescribed illuminance and the prescribed time at the time of external power failure are stipulated by the Building Standard Law.

  The normal lighting circuit 19 turns on the light emitting diode 7 at a lighting level lower than that in the emergency lighting by converting the alternating current of the external power source into a predetermined voltage direct current when the external power source is normally fed to the power terminal block 15. Circuit. In other words, the normal lighting circuit 19 lights the light emitting diode 7 at about 20 to 50% when the lighting level when the light emitting diode 7 is turned on by the emergency lighting circuit 20 is 100%. For example, it is turned on as a night light or the like with an illuminance of about 0.2 to 0.3 lx. The regular lighting circuit 19 includes a path for supplying an alternating current of an external power source to a light distribution / switching control circuit 21 to be described later, in addition to a path for supplying a direct current to the light emitting diode 7.

  The normal lighting circuit 19 and the emergency lighting circuit 20 are connected to the light emitting diode 7 via the light distribution / switching control circuit 21, respectively.

  The light distribution / switching control circuit 21 connects the light emitting diode 7 to the regular lighting circuit 19 during normal operation when the external power supply is normal, while the power distribution detection circuit 17 detects the power failure during an emergency such as a power outage of the external power supply. In response to the power failure detection signal, the light emitting diode 7 is switched from the regular lighting circuit 19 to the emergency lighting circuit 20 and connected, and the connection is maintained for a specified time.

  Further, the light distribution / switching control circuit 21 is configured to supply power to the primary coil of the instrument body side circuit 81 via the regular lighting circuit 19 during normal use. 81 is configured not to supply power.

  Further, when the inspection circuit 22 is turned ON such as when the inspection button 16 is pushed, a power failure simulation signal is given to the power failure detection circuit 17, and a pseudo power failure detection signal is given from the power failure detection circuit 17 to the switching circuit 21. The circuit 21 switches the light emitting diode 7 from the regular lighting circuit 19 to the emergency lighting circuit 20 and connects them for a specified time to check whether or not the light emitting diode 7 is lit in an emergency.

  The power supply detection circuit 17, the charging circuit 18, the regular lighting circuit 19, the emergency lighting circuit 20, the light distribution / switching control circuit 21, and the inspection circuit 22 are each configured as shown in FIG. It is disposed in the middle and upper instrument body 3.

  The operation of this embodiment will be described.

  First, when a main switch such as a wall switch (not shown) of the emergency lighting apparatus 1 is turned on, when the external power source such as a commercial power source is normal, the battery 10 is always charged via the charging circuit 18 by the external power source. Since the light-emitting diode 7 is connected to the regular lighting circuit 19 by the light / control switching circuit 21, the light-emitting diode 7 is lit at a low lighting level by the regular lighting circuit 19, and an illuminance of, for example, 0.2 lx or 0.3 lx is obtained. It is done. That is, the emergency lighting device 1 can be used as a nightlight.

  When the emergency lighting apparatus 1 is used as a nightlight in this way, or when it is not in use, if the external power supply fails, the power failure is detected by the power failure detection circuit, and the power failure detection signal is distributed / This is given to the switching control circuit 21.

  For this purpose, the light distribution / switching control circuit 21 switches the light emitting diode 7 from the regular lighting circuit 19 to the emergency lighting circuit 20, and uses the battery 10 as a power source to turn on the light emitting diode 7 for a specified time, which is higher than the normal lighting level. Turn on with. As a result, a specified illuminance (for example, 1 lx) required as an emergency light can be obtained for a specified time.

  On the other hand, when a main switch such as a wall switch (not shown) of the emergency lighting fixture 1 is turned on as described above, the power of the external power source is converted directly or to an appropriate threshold when the external power source such as a commercial power source is normal. The alternating current is supplied to the primary transformer of the instrument main body side circuit 81 through the regular lighting circuit 19. Then, a magnetic circuit is formed between the primary side transformer and the secondary side transformer of the LED unit side circuit 82 and magnetically coupled, and the LED unit 70 is in direct contact with the fixture body side circuit 81 and above the light projection opening 87. It is held in a separated form.

  Then, when the external power supply becomes a power failure, the power failure is detected by the power failure detection circuit 17, and the power failure detection signal is given to the light distribution / switching control circuit 21, the supply of power to the secondary transformer is stopped. The magnetic circuit between the primary transformer and the secondary transformer disappears. Then, the LED unit 70 moves downward on the side of the light projection opening 87, and the movement stops when the LED unit side circuit 82 and the substrate 71 are engaged with the step portions 85 and 86. At this time, since the electric power from the emergency lighting circuit 20 is supplied to the LED unit 70 via the electric wire 87 having a spring property, the LED chip 72 of the LED unit 70 can be lit. Therefore, light from the LED unit 70 is irradiated downward at substantially the same position as the light projection opening 87.

  Further, when the power failure or the like of the external power supply ends and the external power supply returns to normal, the LED unit side circuit 82 is supplied again to the primary transformer of the appliance body side circuit 81 through the regular lighting circuit 19. By forming a magnetic circuit between the secondary transformers, the LED unit 70 moves to the instrument main body side circuit 81 and is held in a form spaced apart from the light projection opening 87.

  Therefore, in normal use, the light distribution 100 when the light from the LED unit 70 irradiates downward from the light projection opening 87 is the light distribution 100 from the light projection opening 87 downward in the emergency. It is narrower than the light distribution 101 when irradiating.

  According to the present embodiment, it is possible to use a night light during normal use while ensuring the specified emergency lighting performance. In addition, when the light emitting diode 7 is used as a night light, the light emitting diode 7 is turned on with a minimum illuminance, so that the life of the light emitting diode 7 can be prevented from being shortened. Since the lighting is not performed with the load, the safety and reliability of the emergency lighting apparatus 1 are not lowered.

  In addition, since the light emitting diode 7 has a high efficiency of, for example, 50 lm / W, power consumption of the battery 10 can be suppressed. For this reason, the battery 10 can be reduced in size and weight.

  In addition, the chance of emergency lighting is much less than that of regular lighting. Therefore, considering that the light emitting diode 7 has a long life, even if the light emitting diode 7 is turned on so that the power supply from the battery 10 is overloaded in an emergency rather than during normal use, There is little possibility of incurring early shortening of service life. As a result, the light emitting diodes 7 can be configured with the minimum necessary number, so that the light emitting diodes 7 and the light distribution control means for controlling the light distribution from the light emitting diodes 7 can be miniaturized.

  In addition, the light distribution during normal use and emergency can be varied by the light distribution variable means 8. In other words, the emergency light distribution can illuminate a relatively wide space, so there is no need to increase the number of emergency lighting fixtures 1 and ensuring safety in the event of an emergency. Can be increased. On the other hand, during normal use, it is possible to illuminate a relatively narrow range of space compared to an emergency, so that the light from the emergency lighting device 1 is emitted in a space where there are a plurality of people such as a hospital room. It is used as a comfortable night light that can suppress undesired irradiation to a sleeping person. Thus, the highly versatile emergency lighting apparatus 1 that can satisfy a plurality of required specifications can be obtained.

  Further, since the light distribution varying means 8 is realized by using a so-called electromagnetic induction action and an engagement holding structure with the LED unit 83, the light distribution can be easily varied without a complicated configuration.

  In this embodiment, the light distribution is variable between normal use and emergency. However, the light distribution / switching control circuit 21 may set whether to change the light distribution. Is possible. In such a form, a combination of a plurality of light distributions becomes possible, and therefore versatility can be further improved.

Schematic explanatory drawing showing the circuit configuration of the emergency lighting fixture of the present embodiment Partial longitudinal sectional view showing a state in which the emergency lighting apparatus is arranged on the ceiling surface Bottom view of emergency lighting equipment Schematic explanatory drawing showing the light distribution variable means of the emergency lighting equipment

Explanation of symbols

DESCRIPTION OF SYMBOLS 1 ... Emergency lighting fixture, 3 ... Appliance main body, 7 ... LED which is a light emitting diode, 8 ... Light distribution variable means, 10 ... Battery which is an emergency power supply, 18 ... Charging circuit, 19 ... usual lighting circuit, 20 ... emergency lighting circuit,

Claims (2)

An instrument body with an irradiation aperture;
A light emitting diode provided to face the irradiation opening of the instrument body;
An emergency lighting circuit for lighting a light emitting diode by supplying power from an emergency power supply when an external power supply malfunctions;
A normal lighting circuit for lighting a light emitting diode by supplying power from an external power source during normal use;
A light distribution variable means for changing the light distribution emitted from the irradiation aperture in an emergency and in a normal use;
An emergency lighting apparatus comprising:   The light distribution variable means is an emergency lighting device characterized in that the light distribution at the time of emergency is variable so as to have a wide angle as compared with that at normal use.

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