JP6189690B2 - lighting equipment - Google Patents

Description

  The present invention relates to a lighting fixture suitable as a street light in which a plurality of semiconductor light emitting elements (hereinafter abbreviated as LEDs) emit light simultaneously to obtain illumination light, and separates a regular light source and an emergency light source using LEDs. In addition to preventing deterioration of the LED and preventing deterioration of the storage battery for turning on the emergency light source, a stable lighting effect can be obtained over a long period of time so that the replacement inspection of this storage battery is facilitated. is there.

  In general, mercury lamps, sodium lamps, etc. are used for large-scale lighting such as main trunk roads, but fluorescent lamps are mainly used for street lights (security lights). However, stable light emission equivalent to the standard of this fluorescent lamp can be maintained for about 10,000 hours, and replacement of the fluorescent tube is a daily work.

  Street lamps that employ such fluorescent lamps have been proposed with storage batteries that force the fluorescent lamps to turn on in the event of a power failure due to disasters such as typhoons, earthquakes, lightning strikes, fires, or accidents ( Patent Document 1). However, although this fluorescent lamp consumes less power than an incandescent bulb, it cannot be lit continuously for a long time with a storage battery with a limited storage capacity, and it can only be used for lighting during a short period of time during a power failure. Met.

  Therefore, attention is focused on lighting fixtures employing LEDs, which are said to have a design life of about 40000 hours, which is about four times or more that of fluorescent tubes. Further, power consumption is extremely lower than that of a fluorescent tube, and it can be expected to light for a long time in an emergency, and an emergency lighting device incorporating a storage battery has been proposed (see Patent Document 2).

JP 2000-76910 A JP 2007-73193 A

  The technique disclosed in Patent Document 2 employs an LED as a light source, and after the light source is turned on for a predetermined time by an emergency lighting circuit by supplying power from the emergency power source in the event of an emergency such as a power failure, The power supply amount is forcibly reduced to such an extent that the light source is not extinguished, and it does not take into consideration the thermal influence on the LED and the battery during constant lighting.

  By the way, the LED which is a semiconductor element is all converted into heat except energy consumed by visible light. In addition, since the LED package, which is one of the heat sources, has a small surface area, it can be said that it is in a thermally severe environment due to a small heat dissipation due to convection and radiation. As described above, the LED as a heat source has a characteristic that the electrical resistance decreases as the temperature rises.Therefore, the LED falls into a negative spiral in which the temperature rises, the resistance decreases, the current increases, the heat generation increases, and the temperature rises. Will occur. Moreover, the influence by this heat will generate | occur | produce the curvature and a crack by the fall of the transparency by deterioration of a sealing material, and the degree of repeated expansion and contraction becoming large.

  Such consideration regarding heat countermeasures must be sufficient for a storage battery that lights an LED in an emergency. That is, a storage battery that generates electricity by a chemical reaction has high temperature dependence, and deterioration is accelerated when the temperature increases, and the life is halved when the temperature increases by 10 ° C. Therefore, in a lighting fixture that employs an LED that is a large heat generating part, consideration of heat countermeasures for a storage battery is a very important issue compared to an LED.

  In particular, if a lighting fixture with a built-in storage battery that lights an LED is used as a street light in an emergency, the interior will be sealed, so heat measures must be taken effectively to keep the initial performance as long as possible. I must. When this initial performance maintenance period is short, the frequency of replacement maintenance of the storage battery is increased, the maintenance management cost is increased, and the economical problem cannot be overlooked.

Therefore, the present invention solves the above problems by means described below. That is, in the first aspect of the present invention, a hollow space main body opened on the lower surface is provided, and a light source is disposed on the lower surface of the heat radiating plate fixed to the main body along the opening. In the lighting fixture which attached the translucent cover to the main body so as to cover,
The hollow space of the main body is partitioned into a front chamber and a rear chamber by a partition plate,
Of the openings, the opening corresponding to the front chamber is covered with the heat radiating plate in which the LED serving as the ordinary light source and the LED serving as the emergency light source are disposed on the lower surface,
The opening corresponding to the rear chamber among the openings is covered with a shielding plate,
The front chamber partitioned by the heat sink is provided with a normal light source lighting circuit required for lighting the LED of the normal light source and an emergency light source lighting circuit required for lighting the LED of the emergency light source,
A storage battery serving as a power source for lighting the emergency light source is accommodated in the rear chamber partitioned by the shielding plate,
The shielding plate can open an opening corresponding to the rear chamber so that replacement maintenance of the storage battery is possible.
It is set as the lighting fixture characterized by this.

In the invention described in claim 2, in the lighting fixture according to the claim 1, wherein the heat sink to have the partition plate to the standing state to the rear end.

According to a third aspect of the present invention, in the lighting apparatus according to the first or second aspect , a slit is formed at an end of the shielding plate, and the shielding plate is attached to the partition plate through the slit. Become.

According to a fourth aspect of the present invention, in the luminaire according to any one of the first to third aspects, a mode switch is provided so that the lighting mode can be switched when the emergency light source is turned on.

In the invention according to claim 5, in the lighting fixture according to claim 4, the switching of the emergency lighting mode is a combination of the lighting time of the emergency light source and the dimming degree.

  According to the present invention, it is possible to effectively dissipate heat at the time of light emission of an LED serving as an ordinary light source and an emergency light source, and reduce a thermal influence by separating a storage battery that lights the LED from an exothermic element in an emergency. As a structure that facilitates replacement of the storage battery, maintenance workability can be improved. In addition, according to the present invention, the LED of the emergency light source is separated from the LED of the emergency light source, and the LED of the emergency light source is not turned on during normal lighting. A fall can be prevented and it can be set as a reliable lighting fixture.

It is a perspective view which shows the external appearance of the lighting fixture of this invention. It is a perspective view which shows the external appearance of the lighting fixture of this invention. It is a figure which shows the structure of the back surface of the heat sink of the lighting fixture of this invention. It is sectional drawing of the lighting fixture of this invention. It is a perspective view which shows the shielding board of the lighting fixture of this invention. It is a figure explaining the mounting state of the shielding plate of the lighting fixture of this invention. It is a figure explaining the mounting state of the shielding plate of the lighting fixture of this invention. It is a figure explaining the mounting state of the shielding plate of the lighting fixture of this invention. It is a figure explaining the mounting state of the shielding plate of the lighting fixture of this invention. It is a figure which shows the open state of the translucent cover and shielding plate of the lighting fixture of this invention. It is a perspective view explaining the fixing structure of the storage battery of the lighting fixture of this invention. It is a circuit diagram of the electric control system of the lighting fixture of this invention. It is a figure explaining an example of the lighting mode of the lighting fixture of this invention. It is a figure explaining the flow of control processing of the lighting fixture of this invention.

  Hereinafter, embodiments of the present invention will be described in detail with reference to the drawings. The lighting fixture 1 of the present invention shown in FIG. 1 shows a state in which a lens is attached to an LED chip 16a to be described later, and FIG. 2 shows a state in which a reflecting plate 16b is attached. As shown in the figure, the main body 11 is hollow, has a lamp opening 11a on the lower surface, and is integrally formed of a material having excellent corrosion resistance, such as aluminum die cast, together with a fixing flange 11b to a support column.

  A hinge fitting 12a connected to the tip of the translucent cover 13 is rotatably provided at the tip of the hollow body 11, so that the hollow body 11 is prevented from falling off when the translucent cover 13 is released from the opening 11a. (See FIG. 10). Further, the rear end portion of the hollow body 11 is provided with a locking fitting 12b so that the translucent cover 13 can be fixed to the opening 11a. An optical sensor 14 is disposed at the rear end of the hollow body 11, and the optical sensor 14 sends a signal indicating the ambient illuminance outside the hollow body to a control circuit 33 described later.

  A heat radiating plate 15 made of a metal material having excellent heat conductivity is fixed on the opening step portion 11c in the first half of the opening 11a, and a plurality of LED chips 16a serving as ordinary light sources are arranged on the heat radiating plate 15 on the substrate 16. And an LED array in which a plurality of LED chips 17a serving as emergency light sources are arranged on a substrate 17 in front of the substrate 16. It should be noted that a plurality of through holes may be formed at the positions where the normal light source and the emergency light source are disposed on the heat radiating plate 15, and bullet-type LEDs may be attached and fixed to the through holes.

  Further, the heat radiating plate 15 is provided with an inspection switch 18 having an indicator function by light emission and a circuit opening / closing function, and a mode switch 19 that enables switching of the lighting mode when the emergency light source is turned on. . On the back surface of the heat sink 15 configured as described above, as shown in FIG. 3, a control circuit module 21 for blinking a plurality of LED chips 16a serving as a regular light source and a plurality of LED chips 17a serving as an emergency light source. A control circuit module 22 for blinking is provided.

  FIG. 4 shows a state in which the heat radiating plate 15 having the above structure is fixed to the front half of the hollow main body 11, and the partition plate 15 a at the rear end portion of the heat radiating plate 15 in the attached state is almost at the center in the hollow main body 11. It will be in an upright state and will be in a state of being divided into a front chamber FR and a rear chamber BR. The control circuit modules 21 and 22 serving as heat generating elements face the front chamber FR, and further, by arranging a storage battery charging transformer 23 in the front chamber FR, all the heat generating elements are placed in the front chamber FR. It will be aggregated. And by providing the partition plate 15a, it is possible to positively prevent the heat generation in the front chamber FR from being transmitted to the rear chamber BR.

  Next, the configuration of the shielding plate 24 that covers the opening of the rear chamber BR serving as the battery chamber will be described. As shown in FIG. 5, the shielding plate 24 has an outer shape that matches the opening of the rear chamber BR, is provided with a screw 24a at the rear end, and is formed with a slit 24b at the front end. As shown in the figure, the slit 24b is formed by integrally forming a long slit 24b-1 and a short slit 24b-2 so that the slit 24b can be attached to the partition plate 15a.

  That is, when the shielding plate 24 is attached to the partition plate 15a, first, the slit 24b of the shielding plate 24 is inserted into the short folded piece 15a-1 of the partition plate 15a as shown in FIG. Then, the shielding plate 24 is advanced, and the long slit 24b-1 is inserted into the partition plate 15a as shown in FIG. 7, and the slit 24b is lowered to the folded portion of the partition plate 15a as shown in FIG. 9 is slightly retracted, the short slit 24b-2 is engaged with the slit 15a-2 formed at the base of the partition plate 15a and is engaged and fixed in place without being detached as shown in FIG. become.

  Even when the screw 24a is removed, the end of the shield plate 24 thus mounted is maintained as shown in FIG. 10, so that the shield plate 24 is detached from the hollow body 11. Therefore, replacement maintenance work of the storage battery 26 can be easily performed.

  Next, a structure for attaching the storage battery 26 to the rear chamber BR will be described. The luminaire 1 of the present invention is assumed to be installed outdoors, and must have a structure that is durable against vibrations caused by wind and rain, earthquakes, etc., and that replacement maintenance work is easy. Therefore, as shown in FIG. 11, the storage battery 26 is enclosed in a holding metal fitting 27 that holds the outer peripheral surface of the storage battery 26, and is fixed to the support boss 11 d of the hollow body 11 by the mounting screw 28.

  A long hole 27a-1 is formed in the mounting piece 27a of the holding metal fitting 27, and the mounting screw 28 is fixed to the long hole 27a-1, so that the storage battery 26 can be mounted with the mounting screw loosened. The holding metal fitting 27 can be moved backward while being held, and the storage battery 26 can be taken out, and inspection and replacement can be performed while preventing the storage battery 26 from dropping.

  In attaching the storage battery 26, as shown in FIG. 4 (FIG. 10), the heat insulating properties and the earthquake resistance can be improved by interposing the heat insulating buffer materials 29a and 29b. As shown in FIG. 11, a rib 11e is formed at the mounting position of the storage battery 26 on the inner surface of the hollow body 11, thereby forming a gap between the heat insulating cushioning material 29b and the inner surface of the hollow body 11. Thus, the heat of the hollow body 11 can be prevented from being directly transferred to the storage battery 26, and the heat insulation effect can be promoted.

  Next, an electric system control circuit for driving the luminaire 1 of the present invention will be described with reference to FIG. As shown in the figure, one of the commercial AC power sources AC is connected to a charging circuit 31 that always charges the storage battery 26, and the other is connected to a regular light source lighting circuit via a normally open relay contact 32. In the charging circuit 31, electricity of a DC voltage required for lighting the LED chip 17 a is supplied to the storage battery 26 and is also supplied to the emergency light source lighting circuit 22 through the control circuit 33. The monitor of the state of charge of the storage battery 26 can be confirmed by the light emission state of the LED 18a built in the inspection switch 18.

  The control circuit 33 has a hybrid configuration mainly composed of a CPU, and inputs signals from the optical sensor 14, the inspection switch 18, and the mode setting circuit 34. The main control function of the control circuit 33 is that when it is determined that the value of the ambient illuminance detected by the optical sensor 14 indicates nighttime, the normally open relay contact 32 is closed and the commercial AC power supply AC is used as the regular light source lighting circuit. The LED chip 16a is turned on so as to perform a regular illumination function.

  On the other hand, when the supply of the commercial AC power supply AC is stopped due to a power failure, when it is determined that the value of the environmental illuminance detected by the optical sensor 14 indicates nighttime, the control circuit 33 that monitors this indicates the direct current of the storage battery 26. When power is supplied to the emergency light source lighting circuit 22, the LED chip 17a is turned on to perform an emergency lighting function, and when it is determined that the value of the environmental illuminance detected by the light sensor 14 indicates daytime, The chip 17a is turned off to suppress the waste of the storage battery so that the emergency lighting function can be performed for a longer period.

  A mode setting circuit 34 is connected to the control circuit 33, and various lighting modes of the emergency light source can be set by the mode switch 19. By providing a timer function in the mode setting circuit 34, when a power failure occurs due to an earthquake and the power is prolonged, it is possible to turn on the emergency lighting at night for 4 to 6 hours, for example, for several days. Can be. Further, by providing a dimming function for dimming the LED chip 17a together with the timer function, the emergency lighting as shown in FIG. 13 can be controlled, and the emergency lighting period can be programmed. The flow of control processing of the control circuit 33 described above is shown in FIG.

  By the way, since the lighting fixture 1 of this invention is equipped with the optical sensor 14 and the inspection switch 18, it can confirm the lighting state of LED chip 16a, 17a and the electrical storage state of the storage battery 26. FIG. That is, for inspection, the translucent cover 13 is released from the hollow body 11, and the light receiving window of the optical sensor 14 is shielded with a fingertip or the like to forcibly form a night state. Thereby, the normally open relay contact 32 is closed by the determination process of the control circuit 33, the commercial AC power supply AC is supplied to the regular light source lighting circuit 21, and the lighting of the LED chip 16a can be confirmed.

  In this way, in the state in which the light is regularly lit, the inspection switch 18 is pushed to open the normally open relay contact 32 and cut off the supply to the control circuit 33 of the commercial AC power supply AC as a signal current. Thus, a power failure state can be formed, whereby a direct-current power source is supplied from the storage battery 26 to the emergency light source lighting circuit 22 via the control circuit 33, and the lighting of the LED chip 17a can be confirmed.

  As described above in detail, according to the lighting fixture 1 of the present invention, the LED chip 16a, 17a and the storage battery are sufficiently provided with heat countermeasures and can be adequately waterproofed. Besides this, for example, it can be installed in a commercial facility, a residential facility, etc., and its use is not limited.

DESCRIPTION OF SYMBOLS 1 ...... Lighting fixture 11 ... Hollow main body 11a ... Opening 12a ... Hinge bracket 12b ... Locking fixture 13 ... Translucent cover 14 ... ... Light sensor 15 ... Heat dissipation plate 15a ... Partition plate 16 ... LED array substrate 16a ... LED chip 16b ... Reflector 17 ... LED Array substrate 17a ... LED chip 18 ... Inspection switch 19 ... Mode switch 21 ... Control circuit module 22 ... Control circuit module 23 ... Transformer 24... Shielding plate 26... Storage battery 27... Holding bracket 28... Mounting screw 31... Charging circuit 32. ... Control circuit 34 ... Mode setting Road FR ····· front chamber BR ····· the rear chamber

Claims (5)

A hollow space main body that opens to the lower surface, a light source is disposed on the lower surface of the heat sink fixed to the main body along the opening, and a translucent cover is attached to the main body to cover the entire opening Lighting fixtures,
The hollow space of the main body is partitioned into a front chamber and a rear chamber by a partition plate,
  Of the openings, the opening corresponding to the front chamber is covered with the heat radiating plate in which the LED serving as the ordinary light source and the LED serving as the emergency light source are disposed on the lower surface,
The opening corresponding to the rear chamber among the openings is covered with a shielding plate,
The front chamber partitioned by the heat sink is provided with a normal light source lighting circuit required for lighting the LED of the normal light source and an emergency light source lighting circuit required for lighting the LED of the emergency light source,
A storage battery serving as a power source for lighting the emergency light source is accommodated in the rear chamber partitioned by the shielding plate,
The shielding plate can open an opening corresponding to the rear chamber so that replacement maintenance of the storage battery is possible.
A lighting device characterized by that. The heat sink has the partition plate in a standing state at the rear end,
The lighting fixture according to claim 1 . The lighting apparatus according to claim 1 , wherein a slit is formed at an end of the shielding plate, and the shielding plate is attached to the partition plate through the slit. The lighting apparatus according to claim 1 , further comprising a mode switch that enables switching of a lighting mode when the emergency light source is turned on. 5. The lighting apparatus according to claim 4 , wherein the switching of the emergency lighting mode is a combination of the lighting time of the emergency light source and the dimming degree.

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