JP2019125495A - Sealed luminaire - Google Patents

Abstract

To provide a pressure-resistant explosion-proof emergency lamp that allows a battery to be easily taken out without a drop.SOLUTION: A pressure-resistant explosion-proof emergency lamp 50 has an LED light source 51, a battery 52, a control substrate 53 that functions as a control unit that turns on the LED light source 51 by power of the battery 52 in emergency, and a luminaire body 54 that houses them. The luminaire body is provided with a battery recess 62 for housing the battery 52. The battery recess 62 opens at the side of the luminaire body 54 so that the battery 52 can be freely taken out from the side of the luminaire body 54.SELECTED DRAWING: Figure 3

Description

  TECHNICAL FIELD The present invention relates to a sealed lighting device.

There is known an explosion-proof luminaire including a light-emitting element as a light source and having an explosion-proof structure (see, for example, Patent Document 1). In Patent Document 1, a light source container containing an LED module, a power supply container containing a power supply circuit, and a terminal box are separately manufactured from containers having an explosion-proof construction, and these have the same pressure resistance as the explosion-proof construction. It is joined by
Further, as an explosion-proof lighting fixture, a lighting fixture is known in which the battery storage container is opened downward with the light source unit and the control power supply unit kept in a closed space to facilitate battery replacement (for example, patent Reference 2). In addition, although not an explosion-proof lighting fixture, an emergency light is known to be configured to accommodate an LED light source, a power supply substrate and a control unit while maintaining immersion resistance in a glove (see, for example, Patent Document 3). In patent document 3, it has a storage battery unit connected to a lighting unit with a connector, and in the case of battery exchange, it is the structure which removes and replaces a storage battery unit.

Unexamined-Japanese-Patent No. 2015-26479 Patent No. 6166809 gazette JP, 2014-116135, A

By the way, in the environment which uses an explosion-proof lighting fixture, it is necessary to also make an emergency light explosion-proof construction. For this reason, the emergency light of the explosion-proof construction needs to accommodate the battery by the explosion-proof construction, and the configuration of Patent Document 3 can not be adopted, and the battery is likely to be difficult to take out.
If an emergency light of the flameproof construction is constructed with the configuration of Patent Document 2, the lower part of the container for storing the battery is opened to perform the replacement operation of the battery, so the battery may fall off at the time of the replacement operation. Furthermore, since the volume of the sealed space of each of the explosion-proof lighting fixtures of Patent Document 2 is relatively large, in order to make a flame due to an internal explosion generated in each room as an explosion-proof container ignited to the outside explosive atmosphere, When the flame and high temperature gas pass, the flame is extinguished, and it is necessary to form a narrow gap for cooling the gas relatively long. It also requires a thick wall that can not be destroyed during an internal explosion.

  An object of the present invention is to provide a sealed type lighting apparatus such as an explosion-proof emergency lamp which can be easily removed without dropping the battery.

  In order to achieve the above object, the present invention provides a sealed illumination comprising: a light source comprising a light emitting element; a battery; a control unit for lighting the light source at an emergency with power of the battery; In the device, the device body is provided with a battery recess into which the battery is inserted, and the battery recess is open to the side of the device body so that the battery can be taken out from the side of the device body. It is characterized by

  In the sealed type lighting device, the device body has a light source recess for receiving the light source and a control unit recess for receiving the control unit, and the light source recess, the control unit recess, and the battery. The recess is characterized by opening in different directions of the device body.

  Further, in the sealed type lighting device, the light source recess is opened to the lower side of the device body, and the control unit recess is opened to the upper side of the device body.

  In the sealed type lighting device, the battery recess is located below the control unit recess, and the light source recess is located below the battery recess.

  According to the present invention, the battery can be easily taken out without dropping it.

It is a figure which shows the installation state of the flameproof lighting fixture which concerns on embodiment of this invention. It is a figure which shows the attachment structure of a flameproof general-purpose light and a flameproof emergency light. It is the disassembled perspective view which looked at the explosion-proof emergency light with the peripheral structure from diagonally downward. It is the disassembled perspective view which looked at a flameproof explosion-proof emergency light with diagonal configuration from diagonally upward. It is a figure which shows the external appearance of a flame-proof explosion-proof lamp, (A) is a top view, (B) is a side view, (C) is a bottom view. It is the VI-VI sectional view of FIG. 5 (A).

Hereinafter, embodiments of the present invention will be described with reference to the drawings.
FIG. 1 is a view showing an installed state of the explosion-proof lighting fixture 1 according to the embodiment of the present invention.
The explosion-proof lighting fixture 1 integrally comprises a lighting fixture 10, which is a general-purpose light of the explosion-proof type, and a lighting fixture 50, which is an emergency-light of the explosion-proof type, Be done. Hereinafter, the lighting apparatus 10 will be described as the "explosion-proof general purpose light 10", and the lighting apparatus 50 will be described as the "explosion-proof emergency light 50".

  The flameproof general purpose lamp 10 has a substantially rectangular shape extending in one direction (direction indicated by reference symbol K in FIG. 1), and the flameproof emergency protection lamp 50 is connected to one end. The explosion-proof lamp 10 includes a metal case 11 extending in the K direction, a translucent front cover 12 covering the lower surface of the case 11, and a guard member 13 for protecting the front cover 12. LED elements (not shown) are arranged between the housing 11 and the front cover 12 along the K direction, which is the longitudinal direction of the flameproof general purpose lamp 10, which substitutes for the conventional straight tube fluorescent lamp The light source to be

The shape of the flameproof general purpose lamp 10 is manufactured in accordance with the shape of a conventional flameproof lighting device using a straight tube fluorescent lamp as a light source. Further, the output and number of LED elements of the flameproof conventional lamp 10 are set so as to obtain a light output equal to or greater than or equal to that of the straight tube fluorescent lamp. As a result, the flameproof general purpose lamp 10 is formed into a luminaire which is a substitute for the conventional flameproof luminaire using a straight tube fluorescent lamp as a light source.
In addition, well-known LED elements, such as a SMD (Surface Mount Device) type | mold LED chip, are applicable to a LED element widely. Moreover, it is not limited to a LED element, You may apply arbitrary light emitting elements, such as organic EL.

  One fixing tool 2A of the fixing tools 2A and 2B has a position box 4 fixed to a ceiling surface which is an installation surface. The position box 4 functions as a mounting base of the explosion-proof lighting fixture 1 on the ceiling surface, and also functions as a terminal box in which a cable from the outside and a cable connected to the explosion-proof lighting fixture 1 are connected. The fixture 2A is connected to one end of the flameproof general purpose lamp 10, that is, the connection point between the flameproof general purpose lamp 10 and the flameproof emergency lamp 50, and the fixture 2B is the other side of the flameproof general purpose lamp 10. It is connected to the end.

  The flameproof luminaire 1 comprises a cable gland 5 coupled to a position box 4. The cable extending from the flameproof luminaire 1 is drawn into the position box 4 through the cable gland 5. The cable gland 5 clamps and holds the cable passing through the inside of the cable gland 5, thereby preventing water or the like from invading and preventing the cable from being pulled out or vibrating.

FIG. 2 is a view showing a mounting structure of the flameproof general purpose lamp 10 and the flameproof emergency lamp 50. As shown in FIG. In addition, in FIG. 2 and FIG. 3 and FIG. 4 mentioned later, the guard member 13 is removed.
As shown in FIG. 2, the explosion-proof emergency lamp 50 is integrally provided with a projecting portion 50 </ b> S that protrudes along the longitudinal direction K of the explosion-proof utility lamp 10. The protrusion 50S is overlapped from above with one end of the casing 11 of the flameproof explosion-proof lamp 10 through the packing 6 and the protrusion 50S and the casing 11 are connected by a fastening member (for example, a fastening bolt) not shown. .
A hollow box-shaped lid member 7 which is open at the lower side is attached to the projection 50S from the upper side. The projecting portion 50S and the cover member 7 form a box 8 having a substantially rectangular parallelepiped shape, and the cable of the explosion-proof lamp 10 and the cable of the explosion-proof emergency lamp 50 are drawn into the box 9.

That is, the cable of the explosion-proof lamp 10 is drawn into the box 8 through the hole 50H (FIG. 5C described later) which penetrates the projection 50S, and the cable of the explosion-proof emergency lamp 50 is It is drawn into the box 8 through a hole (not shown) provided in the body 60.
The cable gland 5 (FIG. 1) is attached to the upper surface of the box 8. As a result, the cables from the explosion-proof lamp 10 and the explosion-proof emergency lamp 50 are put together in the box 8 and drawn into the position box 4 (connection box) through the common cable gland 5. Wired to an external cable.

FIG. 3 is an exploded perspective view of the pressure-proof explosion-proof emergency lamp 50 as viewed from diagonally below along with its peripheral configuration, and FIG. 4 is an exploded perspective view as viewed from diagonally above.
As shown in FIG. 3 and FIG. 4, the explosion-proof emergency lamp 50 lights up the LED light source 51 at an emergency with the power of the light source 51 (hereinafter referred to as the LED light source 51) consisting of LED elements, the battery 52 and the battery 52. It has a control board 53 which functions as a control unit to be controlled, and an instrument body 54 containing these.

The fixture body 54 is provided with a metal case 60 for housing the LED light source 51, the battery 52 and the control board 53. The housing 60 is formed in a housing that sufficiently satisfies the strength required for the flameproof type, and further integrally includes the projecting portion 50S serving as a mounting portion for the flameproof general purpose lamp 10.
The housing 60 is a concave light source recess 61 having a concave shape in which the lower side is open and the LED light source 51 enters, a concave battery concave 62 having an open side and the battery 52 enters, and a control board opening in the upper side And a control unit recess 63 (also referred to as a control chamber) in which a portion 53 is inserted.

  The LED light source 51 is attached to the light source recess 61 from below, and the translucent front cover 65 is attached to the housing 60 via the front cover retainer 66 so as to cover the opening of the light source recess 61. In addition, the battery 52 is inserted freely into and out of the battery recess 62 from the side (in the present configuration, it is orthogonal to the longitudinal direction K of the flameproof luminaire 1 and corresponds to the horizontal direction). Battery cover 67 is attached to cover the opening of recess 62. The battery cover 67 is a screw type, and can be easily attached to and detached from the housing 60.

Further, the control substrate 53 is disposed in the control unit recess 63 from above, and the control unit cover 68 is mounted so as to cover the opening of the control unit recess 63.
Here, the control board 53 is connected by a cable to the LED light source 51, the battery 52, and the like, and detects the stop of the supply of commercial power (that is, a power failure) to light the LED light source 51 using the power of the battery 52. When the battery 52 is a secondary battery, it has a function of charging the battery 52 and a function of lighting the LED light source 51 in response to the operation of the inspection switch 81 provided on the explosion-proof emergency light 50.

FIG. 5 is a view showing the appearance of the explosion-proof emergency lamp 50, FIG. 5 (A) is a top view, FIG. 5 (B) is a side view, and FIG. 5 (C) is a bottom view. 6 is a cross-sectional view taken along the line VI-VI of FIG.
As shown in FIGS. 5A to 5C, a flange-like flange portion 60A projecting over the periphery of the case 60 is integrally formed on the upper portion of the case 60, and the flange portion is integrally formed. The control unit cover 68 overlaps the upper surface of the top surface 60A from above, and the plurality of fastening members 71 fix the control unit cover 68 to the flange portion 60A.
As shown in FIG. 6, the control unit cover 68 has a shape in which a central portion bulges upward, and the control substrate 53 is accommodated therein.

In this configuration, by arranging the control board 53 close to the back surface of the control unit cover 68, most of the control board 53 is accommodated in the space in the control unit cover 68. The control board 53 and the control unit recess 63 The space left between the bottom of the cover and the bottom of the cover is also used as a placement space of the inspection switch 81.
More specifically, the inspection switch 81 includes a switch operation unit 81A exposed to the outside and operated by the user, and a switch main unit 81B detecting an operation of the switch operation unit 81A, and controls the switch main unit 81B. It is disposed in the unit recess 63. The switch operating portion 81A is exposed to the outside on the irradiation surface side of the explosion-proof emergency light 50.

As shown in FIG. 6, the control unit recess 63 is formed in a concave shape which becomes gradually deeper as it goes to the opposite side of the projecting portion 50S (corresponding to the opposite side to the explosion proof regular lamp 10). The switch body 81B is disposed in the deeper part. As a result, the overall volume of the control chamber 63S is reduced while securing the arrangement space of the switch body 81B.
In the present configuration, the battery recess 62 is located below the shallowest portion of the control unit recess 63, that is, on the side of the protrusion 50S (corresponding to the side of the pressure-proof explosion-proof lamp 10). In other words, the shallow portion of the control unit recess 63 is used to secure the space of the battery recess 62. Since the battery recess 62 opens laterally, the battery 52 is taken in and out from the side. Since the battery 52 is taken in and out from the side, it is possible to prevent the battery 52 from falling downward due to the action of gravity at the time of taking in and out, and the replacement work of the battery 52 becomes easy.

Further, the light source recess 61 is located below the battery recess 62. More specifically, the light source recess 61 is disposed offset below the control unit recess 63 on the side of the protrusion 50S (corresponding to the side of the pressure-proof explosion-proof lamp 10). Since the offset operation is performed, a sufficient space for the switch operation unit 81A can be secured.
The LED light source 51 disposed in the light source recess 61 has a configuration in which one or a plurality of LED elements are mounted on a substrate, and thus becomes a thin plate-like component as a whole. The light source recess 61 has a concave shape whose vertical length is shorter than that of the battery recess 62 and the control unit recess 63, and the front cover 65 is used to cover the LED light source 51 after the thin LED light source 51 is disposed. It is occluded. The front cover holder 66 for holding the front cover 65 is fixed to the lower surface of the housing 60 by a plurality of fastening members 73 as shown in FIG. 5 (C).

Thus, as shown in FIG. 6, the light source chamber 61S containing the LED light source 51 is partitioned by the light source recess 61 of the housing 60 and the front cover 65, and the battery recess 62 and the battery cover 67 A battery chamber 62S containing 52 is partitioned, and a control chamber 63S containing the control board 53 is partitioned by the control unit recess 63 and the control unit cover 68. Since each of the light source chamber 61S, the battery chamber 62S and the control chamber 63S is formed independently, it is easy to maintain the airtight state of each of the chambers 61S to 63S.
A packing may be appropriately provided between the housing 60 and the covers 65, 67 and 68. By providing the packing, the airtight state can be more easily maintained.

  Since this embodiment is an explosion-proof type lighting fixture, a structure is provided in which the flame due to the internal explosion generated in each room is not ignited to the external explosive atmosphere for each of the light source room 61S, the battery room 62S and the control room 63S It is done. Specifically, the flame is extinguished when the flame and the high temperature gas pass through the narrow gap formed between the light source recess 61 of the light source chamber 61S and the cover 65 for the light source chamber, and the high temperature gas is cooled and the outside It has a structure (area shown by symbol Z in FIG. 6) which does not ignite the flammable gas of Although a packing for making the light source chamber 61S airtight is provided between the light source recess 61 and the light source chamber cover 65, the presence or absence of the airtight packing does not matter as the pressure and explosion proof structure. . Also in the control chamber 63S, the mating surface of the flange portion 60A and the control unit cover 68 has an extinguishing structure that exhibits the same effect as the case of the light source chamber 61S. In the battery chamber 62S, the screw groove of the battery cover 67 has the same effect.

  Since the LED light source 51, the battery 52, and the control substrate 53 need to be electrically connected to each other, the light source chamber 61S, the battery chamber 62S, and the control chamber 63S are formed with places for passing cables. However, the place where the cable is passed is closed by a cable gland (not shown), and by passing the cable through this cable gland, the airtight state of each of the chambers 61S, 62S, 63S is independently maintained.

  As described above, in the present embodiment, the device body 54 of the explosion-proof emergency lamp 50 contains the light source chamber 61S containing the LED light source 51, the battery chamber 62S containing the battery 52, and the control board 53. Since the control chamber 63S is formed in an independent airtight space, the internal volume of each chamber can be reduced to suppress the explosion pressure of each chamber. As a result, it is possible to reduce the size and weight by thinning the wall etc. while satisfying sufficient pressure resistance.

  The instrument body 54 further includes a housing 60 independently provided with recesses 61, 62 and 63 in which the LED light source 51, the battery 52, and the control board 53 (corresponding to the control unit) are respectively inserted. And 63 are closed by independent covers 65, 67, 68, so that the configuration can be simplified compared to the case where the containers for storing the respective parts are separately manufactured, which is also advantageous in reducing the number of parts. is there. In addition, it is easy to suppress the increase in size (including the increase in shape and thickness) of the cover of this type, and the increase in complexity of the cover structure.

  Further, since the recessed portions 61, 62 and 63 in which the LED light source 51, the battery 52, and the control substrate 53 enter are respectively opened in different directions of the housing 60, compared with the configuration in which a plurality of openings are provided in the same direction, The housing 60 can be miniaturized, and the opening area can be easily secured.

Further, since the battery recess 62 into which the battery 52 is inserted opens the battery 52 to the side of the tool main body 54 so as to be able to be removed from the side of the tool main body 54, it prevents the battery 52 from falling during maintenance such as battery replacement. The battery 52 can be easily taken out.
In addition, since the LED light source 51 and the control board 53 can be stored as they are when the battery is replaced, it is possible to suppress the inflow of the flammable gas. Even if an explosion occurs, only the battery compartment 62S reduces the explosion pressure.

  Further, the light source recess 61 into which the LED light source 51 enters is opened below the housing 60 (corresponding to the bottom of the instrument main body 51), and the control unit recess 63 into which the control board 53 enters is above the housing 60 Since it opens in the upper part of the main body 51, a component layout suitable for a luminaire which is cable-connected from the ceiling side to the control unit recess 63 and illuminates the lower side is possible.

Further, since the battery recess 62 is located below the control unit recess 63 and the light source recess 61 is located below the battery recess 62, these recesses 63, 62, 61 are disposed close to each other to set the instrument body 54. It can be miniaturized efficiently.
Further, since the inspection switch 81 is provided on the irradiation surface side of the instrument main body 54, the inspection switch 81 can be disposed at a position where it can be easily operated at the time of inspection. Further, the switch 81 is disposed at a position where the light emitted to the outside of the device from the LED light source 51 does not directly strike.

  In addition, the instrument body 54 has the box 8 through which the cable passes, and the cable gland 5 through which the cable in the box 8 passes is provided at a position adjacent to the control chamber 63S in the box 8 The cable can be disposed at a position close to the control room 63S. As a result, the cable length of the cable can be reduced, and the wiring operation and the wiring operation can be facilitated.

  The embodiment described above is merely an example of one aspect of the present invention, and arbitrary modifications and applications are possible without departing from the spirit of the present invention. For example, although the LED light source 51 is illustrated as an example of a light source of the explosion-proof emergency lamp 50, the present invention is not limited to this, and any light emitting element such as an organic EL can be used.

Although the case where the light source recess 61 is located below the battery recess 62, that is, the case where the light source chamber 61S is located below the battery chamber 62S has been described, the invention is not limited thereto. Alternatively, the battery chamber 62S and the light source chamber 61S may be arranged horizontally, or the housing 60 may be vertically elongated and the battery chamber 62S and the light source chamber 61S may be arranged vertically. Also in this case, it is preferable that the battery chamber 62S be opened to the side of the housing 60.
Further, although the explosion-proof emergency lamp 50 connected to the explosion-proof regular lamp 10 shown in FIG. 1 is illustrated, the present invention is applicable to any arbitrary explosion-proof emergency lamp. For example, it is also effective to apply to a waterproof / immersion-type luminaire in the sense that the influence of water entering the luminaire can be minimized. That is, the present invention is applicable to various sealed luminaires including explosion-proof luminaires, and waterproof / immersion-type luminaires.

1 Explosion-proof lighting equipment (hermetic lighting equipment)
2A, 2B Fixing device 4 position box 5 Cable gland 10 Explosion-proof lamp 11 Housing 12, 65 Front cover 13 Guard member 50 Explosion-proof emergency light 50S projection 51 LED light source 52 Battery 53 Control board (control unit)
54 Apparatus Body 60 Housing 61 Light Source Recess 61S Light Source Room 62 Battery Recess 62S Battery Room 63 Control Unit Recess 63S Control Room 67 Battery Cover 68 Control Unit Cover 81 Inspection Switch

Claims (4)

A sealed luminaire comprising: a light source comprising a light emitting element; a battery; a control unit for lighting the light source in emergency with the power of the battery;
The device body is provided with a battery recess into which the battery is inserted, and the battery recess is open to the side of the device body so that the battery can be removed from the side of the device body. Closed type lighting fixtures.   The device body has a light source recess into which the light source enters and a control unit recess into which the control unit enters, and the light source recess, the control unit recess, and the battery recess are the device body. The closed luminaire according to claim 1, wherein the closed luminaire is open in different directions.   The sealed illumination device according to claim 2, wherein the light source recess is open to the lower side of the device body, and the control unit recess is open to the upper side of the device body. The battery recess is located below the control unit recess,
The said light source recessed part is located below the said recessed part for batteries, The sealed type lighting fixture of Claim 3 characterized by the above-mentioned.

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