JP5315950B2 - Lighting fixtures and guide lights - Google Patents

Abstract

<P>PROBLEM TO BE SOLVED: To make temperature approximately uniform on the surface of a battery, and suppress variations of temperature for each cell forming the battery. <P>SOLUTION: A luminaire includes a luminaire body 2 for housing electric components in the inside, a lighting-up device 10 for lighting up a lamp LA mounted on the luminaire body 2, a battery 7 housed in the luminaire body 2 in the vicinity of the lighting-up device 10 and having a plurality of cells for supplying power to the lighting-up device 10, and a battery cover 8 which has a heat-receiving surface 84 arranged to intervene between the battery 7 and the lighting-up device 10 and/or the lamp LA and a diffusion/emission surface 81 for diffusing heat conducted from the heat-receiving surface 84 and emitting the diffused heat and is mounted on the luminaire body 2 so as to cover the battery 7. Accordingly, temperature on the surface of the battery 7 can be controlled to be approximately uniform, and variations of temperature for each cell forming the battery 7 can be suppressed. <P>COPYRIGHT: (C)2010,JPO&amp;INPIT

Description

  The present invention relates to a lighting fixture incorporating a battery.

  In the assembled battery and battery system, if the temperature difference between cells is large, the charging and discharging performance varies from cell to cell, and due to this variation in charging and discharging performance, there is a tendency for a specific cell to be discharged more than specified. In addition, when this overdischarge state becomes a long period, it leads to a cause of deep discharge and the like, and the function deterioration and the performance deterioration may be accelerated.

  Therefore, it is considered to use a heat conductive member, dissipate heat from the high temperature part of the battery assembly to the outside, and average the heat to prevent the battery from being degraded or deteriorated. In this way, dissipating the heat of the high temperature part to the outside can lower the temperature of the assembled battery, and each cell is dissipated using the same heat conductive member, so the temperature for each cell Can be averaged (see, for example, Patent Document 1).

JP 2003-249205 A (see page 4, upper right column, lines 9-19, FIG. 4)

  However, it has been difficult to dissipate heat to the outside due to the structure of the lighting fixture such as a lighting fixture typified by a guide lamp whose outer shell is made of a resin that is difficult to transmit heat.

  In addition, as lighting fixtures such as guide lights have been downsized, the heat generated by lighting devices and the like has become easy to get into the lighting fixtures, and the space for placing electronic components has been limited by downsizing. Therefore, there is an increasing need to dispose a battery near a heat source such as a lighting device that generates a large amount of heat.

  For this reason, heat from the lighting device or the like is easily transmitted to the battery, and the portion close to the heat source becomes high in temperature, which may cause a temperature difference between individual cells constituting the battery.

The lighting fixture according to the present invention is housed in the fixture body so that an electrical component is housed therein, a lighting device that is attached to the fixture body and lights a lamp, and one side of the lighting device is close to the lighting device. is a battery having a plurality of cells supplying power to the lighting device, the rewritable interposed between the lighting equipment and the battery, Netsu受arranged to the lighting device in contact with or proximity A diffusion radiation surface that is disposed so as to be substantially parallel to another surface different from the one surface formed by the battery and that diffuses heat conducted from the heat receiving surface and radiates the heat to diffuse. And a thermally conductive member attached to the instrument body so as to cover the battery.

  According to the present invention, the temperature of the surface of the battery can be set to a substantially uniform temperature, and variations in temperature between cells constituting the battery can be suppressed.

Embodiment 1 FIG.
FIG. 1 is a perspective view of a guide light (an example of a lighting fixture) showing the present embodiment, and FIG. 2 is a cross-sectional view showing the direction of the AA cross section of the guide light shown in FIG.

  The guide light 1 has an instrument body 2, display panels 3a and 3b attached to both sides of the instrument body 2, and lamps LA such as LEDs, and is positioned at the ends of the display panels 3a and 3b. The lamp holders 4a and 4b attached to the instrument body 2 and a display operation unit 5 having a display switch DL for displaying the internal operation and an inspection switch SW for checking the internal operation. In addition, a terminal block 6 and a battery 7 are provided inside the guide lamp 1.

  The display panels 3a and 3b are equipped with optical members, for example, display panel bodies 31a and 31b, display plates 32a and 32b on which symbols indicating evacuation exits are displayed, and rear surfaces of the display plates 32a and 32b. The light guide plates 33a and 33b are arranged on the rear side of the light guide plates 33a and 33b, and the light guide plates 33a and 33b are incident on the end portions of the light guide plates 33a and 33b. Reflecting sheets 34a and 34b that efficiently reflect the light of the lamp LA incident on the light guide plates 33a and 33b are provided so as to be illuminated from the back side.

  The inspection operation unit 5 includes a display unit DL that displays the state of charge of the battery 7 and the like, and an inspection switch SW including a push button.

  The display unit DL includes an indicator such as an LED or a liquid crystal display.

  3 is an exploded front view of the guide light shown in FIG. 1, FIG. 4 is an exploded front view showing a state in which a battery and a battery cover are removed from the fixture main body shown in FIG. 3, and FIG. 6 is a perspective view showing the battery cover shown in FIG. 3, FIG. 6 (a) is a perspective view showing the surface of the battery cover, and FIG. 6 (b). FIG. 3 is a perspective view showing the inside of a battery cover.

The appliance body 2 contains a battery 7 , a battery housing portion 9 to which a battery cover 8 is attached, a lighting device 10, and lamp connectors 11a and 11b that are electrically connected to the lamp holders 4a and 4b. Lamp wires 12a and 12b for supplying power from the lighting device 10 to the lamp LA attached to the holders 4a and 4b, a power supply line connected from the outside, and a terminal block 6 for supplying external power to the lighting device 10 from the outside, Battery connectors 13 a and 13 b that are electrically connected to the battery 7 are provided, and battery wires 14 a and 14 b that supply power from the battery 7 to the lighting device 10 are provided.

  The instrument main body 2 further includes a power supply hole 15 for passing a power line to the inside of the instrument main body 2 on the upper surface of the frame portion of the instrument main body 2 and a mounting hole 16 for attaching two screws to the ceiling. ing.

  The battery 7 includes two battery packs 7a and 7b composed of a plurality of cells, each cell constituting the battery pack 7a and 7b is connected in series, and the two battery packs 7a and 7b are connected in series by a battery wire 14a. Has been.

  The battery storage unit 9 protrudes obliquely upward from the bottom surface support portion 91 that supports the bottom surfaces of the respective battery packs 7a and 7b, and one battery pack 7a is displaced from the bottom surface support portion 91. From the side surface of the frame portion of the instrument body 2, the hook projection 92 to be prevented, the battery hooking claws 93 a and 93 b that project in a substantially L shape and hook and hold both sides of the other battery pack 7 b. A battery cover mounting projecting piece 94 projecting inward, a slit piece 95 projecting from the back plate in an I-shape so as to be substantially parallel to the lighting device 10, and having a gap between the lighting device 10, and the battery A battery cover support projecting piece 96 projecting in a substantially L shape from between the pack 7a and the battery pack 7b is provided.

  The battery cover 8 has a substantially U shape, is attached to the instrument body 2 substantially in parallel to the battery 7, and has a diffusion radiation surface 81 that contacts the battery cover support projecting piece 96, and is substantially perpendicular to the diffusion radiation surface 81. A cover mounting surface 83 having a notch portion 82 that engages with the battery cover mounting protrusion piece 94 and is bent substantially vertically from the diffusion radiation surface 81 and inserted into the slit piece 95. The heat receiving surface 84 that contacts the lighting device 10 is provided.

  The inspection switch SW is for testing whether the battery 7 is normal by switching the operation of the lighting device 10 during a period in which the inspection switch SW is operated. The charging of the battery 7 is stopped and the lamp LA is turned on by the power of the battery 7 to determine whether the battery 7 is normal.

  Next, an attachment process for attaching the battery 7 and the battery cover 8 to the instrument body 2 will be described.

  FIG. 7 is a perspective view showing an operation of attaching the battery cover to the instrument body, FIG. 7A is a perspective view showing a state before the battery cover is attached to the instrument body, and FIG. It is a figure which shows the state after attaching the battery cover to the instrument main body.

  8 is a cross-sectional view showing the arrow direction of the AA cross section of the guide light (excluding the display panel) shown in FIG. 1, and FIG. 8 (a) is a view before attaching the battery cover to the instrument body. FIG. 8B is a cross-sectional view showing a state in which the guide concave portion of the battery cover is brought into contact with the protruding portion of the instrument body, and FIG. 8C is a cross-sectional view of the battery cover. It is sectional drawing which shows the state after attaching to a main body.

  The battery cover 8 is attached to the instrument body 2 from obliquely above, and is inserted so that the notch 82 of the battery cover 8 is hooked on the battery cover mounting protrusion 94 of the instrument body 2 (FIG. 7A and FIG. 8 (a)).

  Next, when inserting into the notch part 82 of the battery cover 8, the heat receiving surface 84 of the battery cover 8 is inserted into the slit piece 95 of the battery storage part 9 (FIG.8 (b)).

  When the battery cover 8 is attached to the battery housing part 9, the notch part 82 engages with the battery cover attachment projecting piece 94, and the heat receiving surface 84 comes into surface contact with the slit piece 95 and the side surface of the lighting device 10 (FIG. 7B). ) And FIG. 8 (c)).

  Thus, since the notch 82 of the battery cover 8 is hooked on the battery cover mounting protrusion 94 from above, the battery cover 8 does not fall off the instrument body 2 and the battery cover 8 surrounds the battery 7. Thus, the battery 7 can be prevented from dropping.

  Next, the movement of heat when heat generated by the lighting device 10 is transferred to the battery 7 and the battery cover 8 will be described.

  FIG. 9 is a cross-sectional view showing the arrow direction of the BB cross section of the guide lamp shown in FIG. 1, and is a schematic view showing heat conduction of heat generated by the lighting device.

  The heat generated by the lighting device 10 is transferred to the heat receiving surface 84 of the battery cover 8 (heat transfer H1).

  Since the battery cover 8 has a high thermal conductivity, the heat conducted to the heat receiving surface 84 is transferred to the diffusion radiation surface 81 (heat transfer H2).

  The heat transferred to the diffusion radiation surface 81 is diffused (heat transfer H3), the temperature of the diffusion radiation surface 81 is substantially averaged, and heat is radiated from the front and back surfaces of the diffusion radiation surface 81 (heat transfer H4). .

  The heat radiated from the surface side of the diffuse radiation surface 81 is radiated into the atmosphere and diffuses inside the guide lamp 1.

  The heat radiated from the back surface side of the diffuse radiation surface 81 is radiated to the atmosphere, and the heat is transmitted to the battery 7 disposed inside the battery cover 8.

  At this time, since the high temperature portion and the low temperature portion are thermally connected by the diffusion radiation surface 81, the heat of the diffusion radiation surface 81 is diffused and averaged, and a substantially uniform temperature is transmitted to the entire battery 7.

  When the battery cover 8 is not provided, the temperature of the battery 7 is the highest in the portion adjacent to the lighting device 10 that is a heat source, and the battery 7 itself hardly generates heat, so it is farthest from the lighting device 10. The temperature of the part becomes the lowest.

  However, since the heat receiving surface 84 of the battery cover 8 having a high thermal conductivity is interposed between the lighting device 10 and the battery 7, the heat received by the heat receiving surface 84 is transferred to the diffusion radiation surface 81 and diffused. .

  Therefore, the heat diffused by the diffusion radiation surface 81 is averaged, and the entire battery 7 is heated at a substantially uniform temperature.

  Therefore, since the variation in the temperature of the several cell which comprises the battery 7 is suppressed, the charging / discharging performance of the battery 7 can be substantially equalized.

  Therefore, since the variation in the charge / discharge performance caused by the temperature difference between the cells can be made almost uniform, it is possible to prevent only specific cells from being overdischarged.

  Thus, by attaching the battery cover 8, the heat transmitted to the diffusion radiation surface 81 moves from the high temperature portion to the low temperature portion, and the heat is averaged. By adopting a material having a high thermal conductivity such as aluminum or copper as the material of the battery cover 8, heat can be more easily transmitted and averaged.

  Further, when the battery cover 8 is anodized or painted, the surface area of the battery cover 8 is increased, and heat is easily radiated into the atmosphere.

  Further, by making the slit piece 95 a material (for example, plastic resin) having a lower thermal conductivity than the battery cover 8, it becomes difficult for the heat of the lighting device 10 to be directly transmitted to the battery 7 by the slit piece 95. It becomes easy to be transmitted from the heat receiving portion 84 to the diffusion radiation surface 81. Therefore, the temperature of the battery 7 on the lighting device 10 side is less likely to be higher than that of other portions, and the heat almost averaged by the diffusion radiation surface 81 is radiated from the diffusion radiation surface 81 to the entire battery 7. Accordingly, the overall temperature of the battery 7 can be made substantially uniform.

  In the battery 7, in general, when the temperature difference between the cells is large, the charging and discharging performance varies from cell to cell, which causes deep discharge and the like. Therefore, it is assumed that the function of the battery 7 is reduced and deteriorated, and the lighting time in an emergency (power failure) is shortened.

  However, since the heat generated by the lighting device 10 and the like is averaged by the battery cover 8 and transferred to the surface of the battery 7, the heat can be transferred from the high temperature portion to the low temperature portion. As a result, the temperature of the high temperature portion decreases, the temperature of the low temperature portion increases, the heat is averaged, and the temperature difference decreases.

  Therefore, even if it is difficult to dissipate heat to the outside due to the structure of the guide lamp 1 (or lighting fixture), such as the outer shell of the fixture body 2 made of a resin that is difficult to transmit heat, the cell of the battery 7 Since each temperature is made substantially uniform, it is possible to prevent a decrease in function and deterioration of the battery 7.

  In addition, the arrows of heat transfer H1 to H4 shown in the present embodiment are an example showing how heat transferred to the battery cover 8 is transmitted. In practice, heat is directly emitted from the lighting device 10 into the atmosphere. There is also heat that is transferred or radiated from each part in the other direction.

  In the present embodiment, the case where the lighting device 10 is used as the heat generating component disposed in the vicinity of the battery 7 has been described. However, when the lamp LA is disposed in the vicinity of the battery 7, the lamp LA and the battery The heat receiving surface 84 of the battery cover 8 may be disposed between the heat receiving surface 84 and the heat receiving surface 84 to receive heat generated by the lamp LA.

  In the present embodiment, the structure of the guide lamp 1 has been described as an example of a lighting fixture. However, when the commercial power is supplied, the battery 7 is charged and the lamp LA is turned on. It may be a lighting fixture such as an emergency lighting fixture that lights the lamp LA with the power of the battery 7 when it is stopped, and the form of the lighting fixture is not limited as long as the battery 7 is provided inside.

It is a perspective view of the guide light shown in Embodiment 1. FIG. It is AA sectional drawing of the guide light shown in Embodiment 1. FIG. 1 is an exploded perspective view of a guide lamp showing Embodiment 1. FIG. 1 is an exploded perspective view of a guide lamp showing Embodiment 1. FIG. 1 is a perspective view of a battery showing Embodiment 1. FIG. 3 is a perspective view of a battery cover showing Embodiment 1. FIG. It is a perspective view which shows the assembly of the guide light which shows Embodiment 1. FIG. It is AA sectional drawing which shows the assembly of the guide light which shows Embodiment 1. FIG. It is BB sectional drawing which shows the heat conduction of the guide lamp which shows Embodiment 1. FIG.

Explanation of symbols

  DESCRIPTION OF SYMBOLS 1 Guide light, 2 Apparatus main body, 3a, 3b Display panel, 4a, 4b Lamp holder, 5 Inspection operation unit, 6 Terminal block, 7 Battery, 7a, 7b Battery pack, 8 Battery cover, 9 Battery storage part, 10 Lighting device 11a, 11b Lamp connector, 12a, 12b Lamp wire, 13a, 13b Battery connector, 14a, 14b Battery wire, 15 Power supply hole, 16 Mounting hole, 31a, 31b Display panel body, 32a, 32b Display plate, 33a, 33b Light plate, 34a, 34b Reflective sheet, 81 Diffusing radiation surface, 82 Notch, 83 Cover mounting surface, 84 Heat receiving surface, 91 Bottom support portion, 92 Hooking protrusion, 93a, 93b Battery hooking claw, 94 Battery cover mounting protrusion Piece, 95 slit piece, 96 battery cover support protruding piece, W test switch, DL display unit, LA lamp, H1~H4 heat transfer.

Claims (6)

An instrument body in which electrical components are stored;
A lighting device that is attached to the fixture body and lights the lamp;
A battery having a plurality of cells that are housed in the appliance main body so that one surface side is close to the lighting device and supplies power to the lighting device;
The rewritable interposed between the battery and the lighting equipment, the contact to the lighting device or proximity to such an arrangement is the heat receiving surface, substantially for different other surface from said one side where the battery is formed A heat conductive member that is arranged in parallel and has a diffusion radiation surface that radiates heat that diffuses heat from the heat receiving surface and radiates the heat, and is attached to the instrument body so as to cover the battery When,
The lighting fixture characterized by comprising. An instrument body in which electrical components are stored;
A lighting device that is attached to the fixture body and lights the lamp;
A first battery pack comprising a plurality of cells housed in the appliance body in proximity to the lighting device and supplying power to the lighting device;
It is electrically connected to the first battery pack, and is disposed so as to be separated from the lighting device via the first battery pack, and is stored in the fixture main body to supply power to the lighting device. A second battery pack comprising a plurality of cells;
Together is interposed between the first battery pack and the lighting device, and said first, second heat conductive member attached to said instrument body so as to cover the battery pack,
The lighting fixture characterized by comprising. Heat conductive member, an illumination device according to claim 1 or claim 2, characterized in that it is formed of a metallic material. The lighting apparatus according to claim 3 , wherein the heat conductive member is aluminum or copper. Heat conductive member, an illumination device according to any of claims 1 to 4, characterized in that it is anodized or painted. A lighting fixture according to any one of claims 1 to 5 ,
A display board that is arranged on the irradiation surface of this luminaire and displays a pictogram indicating evacuation guidance,
A guide light characterized by comprising:

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