Lighting device

Abstract

To provide a lighting device that facilitates the routing of external wiring and suppresses heat buildup. [Solution] The lighting device 10 comprises a fixture body 11, a light source unit 12, an emergency light unit 13, a first space 36, and a second space 68. The light source unit 12 is positioned on the fixture body 11. The emergency light unit 13 has a power supply unit 43 and is positioned on the fixture body 11 adjacent to the light source unit 12. The first space 36 is formed between the light source unit 12 and the inner surface of the fixture body 11 facing the light source unit 12. The second space 68 is formed between the power supply unit 43 of the emergency light unit 13 and the inner surface of the fixture body 11 facing the power supply unit 43 of the emergency light unit 13, and communicates with the first space 36.

Description

Technical Field

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[0001] Embodiments of the present invention relate to lighting devices.

Background Art

[0002] Conventionally, there is a lighting device in which a normal lighting device and an emergency lighting device are incorporated in a recess of an appliance body. When the space between the emergency lighting device and the top surface of the appliance body is narrow, it is difficult to route external wiring during construction. Also, since the emergency lighting device and the normal lighting device are partitioned from each other, heat generated from each lighting device is likely to be trapped in each space.

Prior Art Documents

Patent Documents

[0003]

Patent Document 1

Summary of the Invention

Problems to be Solved by the Invention

[0004] The problem to be solved by the present invention is to provide a lighting device that facilitates routing of external wiring and suppresses heat trapping.

Means for Solving the Problems

[0005] The lighting device according to the embodiment includes an appliance body, a first light source, a second light source, a first space portion, and a second space portion. The first light source is disposed on the appliance body. The second light source has a power supply unit and is disposed on the appliance body adjacent to the first light source. The first space portion is formed between the first light source and the inner surface of the appliance body facing the first light source. The second space portion is formed between the power supply unit of the second light source and the inner surface of the appliance body facing the power supply unit of the second light source and communicates with the first space portion.

Effects of the Invention

[0006] According to the lighting device of this embodiment, it is expected that external wiring can be routed more easily and heat buildup can be suppressed. [Brief explanation of the drawing]

[0007] [Figure 1] This is a perspective view of a lighting device showing one embodiment. [Figure 2] This is a perspective view of the same lighting device with the first light source removed. [Figure 3] This is a perspective view of the same lighting device with the second light source removed. [Figure 4] This is a plan view of the fixture body of the same lighting device. [Figure 5] This is a perspective cross-sectional view showing the area near the second light source of the same lighting device. [Figure 6] This is a cross-sectional view showing a part of the same lighting device. [Figure 7] This is a perspective view of the area near the second light source of the same lighting device, with the first light source removed. [Figure 8] This is a perspective view of the fixing member of the same lighting device. [Modes for carrying out the invention]

[0008] One embodiment will be described below with reference to the drawings.

[0009] Figures 1 to 3 show the lighting device 10. The lighting device 10 is installed on a surface such as a ceiling and is an emergency lighting device that lights up using an emergency power supply in the event of a power outage of the normal external power supply. Hereafter, the lighting device 10 will be described as being installed on a ceiling, with the front side in the direction of light irradiation being the lower side and the back side opposite the direction of light irradiation being the upper side.

[0010] The lighting device 10 comprises a fixture body 11, a light source unit 12 which is a first light source that is detachably fixed to the fixture body 11, and an emergency light unit 13 which is a second light source that is fixed to the fixture body 11. The lighting device 10 is long and configured as a base light type in which the light-emitting area of ​​the light source unit 12 is linear along the longitudinal direction.

[0011] Figures 2 to 4 show the fixture body 11. The fixture body 11 comprises a long main body portion 17 and end plates 18 provided at both ends of the main body portion 17 in the longitudinal direction. The main body portion 17 comprises a top surface portion 19 which is the mounting surface to the ceiling surface, two opposing side portions 20 provided downward from both sides in the width direction, which is the short direction intersecting the longitudinal direction of the top surface portion 19, and two reflective surface portions 21 provided so as to expand diagonally upward from the lower ends of these side portions 20.

[0012] An opening 22 facing the top surface 19 is formed on the lower side between the side portions 20 on both sides of the fixture body 11, which are the lower side, and the end plates 18 on both ends, and a recess 23, which is a space with an opening on the lower side, is formed inside the fixture body 11. The light source unit 12 and the emergency light unit 13 are inserted and arranged in the recess 23. In this embodiment, the emergency light unit 13 is arranged on one end of the fixture body 11, and the light source unit 12 is arranged on the other end of the fixture body 11, and these light source unit 12 and emergency light unit 13 are adjacent to each other in the longitudinal direction of the fixture body 11, which is the longitudinal direction of the lighting device 10.

[0013] Furthermore, the main body of the device 11 has a terminal block 25 and a first power supply unit, i.e., a regular power supply unit, which is a regular power supply unit, attached to the top surface 19, for example. In addition, the top surface 19 is provided with multiple mounting holes for attachment to the ceiling surface using suspension bolts, screws, etc.

[0014] The terminal block 25 is located on the top surface 19 near the center of the fixture body 11 in the longitudinal direction. A first external wiring, which is drawn from the ceiling or elsewhere into the recess 23 through a first wiring hole 28 formed in the top surface 19, is connected to the terminal block 25, and external power such as AC power supplied from the commercial power supply is input to it. The terminal block 25 is also connected to internal wiring for connection to the external power input section of the normal power supply unit 26, and the input external power is supplied to the normal power supply unit 26. The terminal block 25 may also be connectable to feedback wiring for sending external power to other lighting devices.

[0015] The regular power supply unit 26 is provided in an elongated shape and is positioned on the top surface 19 of the fixture body 11 with its longitudinal direction aligned with the longitudinal direction of the fixture body 11. The regular power supply unit 26 is positioned at a distance from the terminal block 25 on the top surface 19. In this embodiment, the regular power supply unit 26 is positioned on the opposite side from the terminal block 25 with respect to the first wiring hole 28. That is, the first wiring hole 28 is located between the regular power supply unit 26 and the terminal block 25. In the illustrated example, the first wiring hole 28 is located near the center of the light source unit 12 attached to the recess 23 in the longitudinal direction and is closer to the regular power supply unit 26 than to the terminal block 25. The regular power supply unit 26, the terminal block 25, and the first wiring hole 28 are all located on the rear side of the light source unit 12 in the longitudinal direction of the fixture body 11. The first wiring hole 28 is located, for example, in the center of the width direction (short direction) of the fixture body 11.

[0016] The regular power supply unit 26 is a regular power supply module that acts as a first power supply unit, converting external power input through the terminal block 25 into a predetermined lighting power and supplying it to the light source unit 12. The regular power supply unit 26 has an external power input section at one end and a lighting power output section at the other end, with the external power input section facing the terminal block 25 and the lighting power output section facing the opposite side of the terminal block 25. An output wire having a connector at its tip is connected to the lighting power output section.

[0017] Also, the light source unit 12 is shown in FIGS. 1 and 2. The light source unit 12, also called a light source bar, is formed in a long shape. The upper side of the light source unit 12 is inserted into the recess 23 through the opening 22 of the instrument body 11, and the lower side protrudes outside the recess 23 of the instrument body 11.

[0018] The light source unit 12 includes a long chassis 30, a normal light source module which is a first light source module disposed on the chassis 30, and a cylindrical cover 32 attached to the chassis 30 so as to cover the normal light source module.

[0019] The light source module has a light emitting element such as an LED mounted on one main surface side of a long substrate, and the other main surface side of the substrate is attached to face the chassis 30. An input wiring having a connector on the tip side is connected to one end side in the longitudinal direction of the light source module, and this input wiring is drawn out from the back side of the chassis 30 so as to be connector - connectable to the output wiring of the normal power supply unit 26.

[0020] Also, a mounting spring (not shown) is attached to the upper part which is the back side of the chassis 30. For example, a torsion spring is used as the mounting spring, and it is attached to the chassis 30 via a mounting bracket. For example, the mounting springs are arranged at a plurality of locations, for example, two locations, in the longitudinal direction of the chassis 30. The mounting springs are pulled out from the chassis 30 against the spring force and are hooked on a spring receiving fitting 34 arranged on the top surface portion 19 of the instrument body 11, so that the light source unit 12 is suspended and supported with respect to the instrument body 11. By moving the light source unit 12 toward the instrument body 11, the light source unit 12 is configured to be attracted to the instrument body 11 by the action of the spring force and attached to the recess 23.

[0021] As shown in Figure 6, in the mounting position where the light source unit 12 is attached to the recess 23, a first space 36, which serves as a wiring space, is formed between the light source unit 12 and the lower surface of the top surface 19, which is the inner surface of the fixture body 11. In other words, the upper surface of the chassis 30 located above the light source unit 12 is positioned lower and away from the lower surface of the top surface 19, and a longitudinal first space 36 is formed on the upper part of the light source unit 12, extending from both ends in the longitudinal direction of the light source unit 12. The first space 36 is surrounded by the top surface 19 and the side surface 20 of the fixture body 11 and constitutes part of the recess 23. As shown in Figure 4, the terminal block 25 and the normal power supply unit 26 are located within the first space 36, and the first wiring hole 28 communicates with the first space 36, allowing the first space 36 to communicate with the outside air. Within the first space 36, the ends of the first external wiring drawn in from the first wiring hole 28, wiring connecting the terminal block 25 and the normal power supply unit 26, output wiring of the normal power supply unit 26, input wiring of the light source unit 12, and the like are arranged.

[0022] As shown in Figure 2, the lower part of the cover 32 is formed in a convex curved shape with a cross-section in the width direction that protrudes downward, and is light-transmitting.

[0023] Figures 1, 3, 5 through 7 also show the emergency light unit 13. The emergency light unit 13 is elongated and shorter than the light source unit 12. The emergency light unit 13 consists of a heat sink 40, which is a mounting component, with the light source 41, terminal block 42, and power supply unit 43, which is an emergency lighting unit, all integrally mounted to it, and the heat sink 40 is attached to a decorative frame 44.

[0024] The heat sink 40 is integrally formed from a metal such as aluminum that has excellent heat dissipation properties. The heat sink 40 is bent into an L-shaped cross-section, with a flat first portion 46 and a flat second portion 47 connected so as to intersect or perpendicular to each other. The heat sink 40 is formed longitudinally, and is attached to the decorative frame 44 with one main surface of the first portion 46 facing the back side of the decorative frame 44, with the heat sink 40 aligned longitudinally along the length of the decorative frame 44. For example, the heat sink 40 is fixed by screwing the first portion 46 to a boss-shaped support portion 48 that protrudes from the back side of the decorative frame 44. A light source 41 is thermally connected and positioned on one main surface of the first portion 46 of the heat sink 40, that is, the side facing the decorative frame 44, and a power supply unit 43 is thermally connected and positioned on the other main surface of the first portion 46. Furthermore, the second portion 47 rises from the edge of the first portion 46, and a terminal block 42 is thermally connected to it, with the terminal block 42 and the power supply unit 43 positioned adjacent to each other in the longitudinal direction of the heat sink 40.

[0025] The light source 41 uses a light-emitting module in which semiconductor light-emitting elements such as LEDs or organic ELs are mounted on a substrate. The light source 41 is combined with an annular socket and attached to the first portion 46 of the heat sink 40 via the socket by screws or the like. The socket is electrically connected to the light source 41, and wiring from the power supply unit 43, which is inserted through a hole formed in the heat sink 40, is also electrically connected to the socket, thereby electrically connecting the light source 41 and the power supply unit 43.

[0026] The light source 41 is covered by a lens 51. The lens 51 is formed in the shape of a convex lens that protrudes in the direction of light irradiation, and is positioned opposite the light source 41, receiving the light emitted from the light source 41 and emitting it in a predetermined light distribution. The lens 51 is fitted around the socket and positioned on the light source 41, and the area around the lens 51 is arranged in the decorative frame 44.

[0027] Furthermore, a second external wiring, which is routed into the recess 23 from the ceiling or elsewhere via a second wiring hole 53 formed in the top surface 19 of the fixture body 11, is connected to the terminal block 42, and external power such as AC power supplied from the commercial power supply is input. In addition, the power connection wires of the power supply unit 43 are connected to the terminal block 42, and the input external power is supplied to the power supply unit 43.

[0028] The second wiring hole 53 is located on the top surface 19, opposite the power supply unit 43 in the vertical direction. That is, the second wiring hole 53 is located closer to one end of the fixture body 11 and is spaced apart from the first wiring hole 28 in the longitudinal direction of the fixture body 11. Also, the second wiring hole 53 is located, for example, on the top surface 19, offset to one side with respect to the center in the width direction. The second wiring hole 53 is formed to be larger in diameter than the first wiring hole 28, allowing a second external wiring, which is a fire-resistant cable and thicker than the first external wiring, to be inserted.

[0029] The power supply unit 43 is configured such that a circuit section (circuit board) and a battery device are housed inside a case 55, for example, made of resin.

[0030] The battery unit is a battery pack comprising multiple rechargeable secondary batteries (primary batteries), such as nickel-metal hydride batteries or lithium-ion batteries. The battery unit is electrically connected to the circuit unit via battery connection wires.

[0031] The circuit unit includes a charging circuit that converts external power into a predetermined charging power to charge the battery device when AC power is supplied, and an emergency lighting circuit that converts the battery power stored in the battery device into a predetermined lighting power and supplies it to the light source 41 to light it up during a power outage. The aforementioned power supply connection lines and battery connection lines are connected to the circuit unit. The emergency lighting circuit of the circuit unit and the light source 41 are electrically connected by wiring. The circuit unit may also be provided with an inspection unit for checking the lifespan of the battery device and any abnormalities in the light source 41.

[0032] Furthermore, the decorative frame 44 is formed in an elongated shape. The front side of the decorative frame 44 is formed in a convex curved shape with a cross section in the width direction that protrudes downward so as to be continuous with the surface shape of the cover 32 of the light source unit 12. The back side of the decorative frame 44 is formed in a concave shape and has multiple support parts 48 protruding from it. In addition, the decorative frame 44 is provided with a light source window 58 in which the light source 41 is positioned opposite and the central part of the lens 51 protrudes.

[0033] In this embodiment, the decorative frame 44 functions as a mounting member for attaching the emergency light unit 13 to the fixture body 11. The decorative frame 44 has mounting portions 60 formed therein, and is fixed to the fixture body 11 by screws or the like at the position of the mounting portions 60. The mounting portions 60 are, for example, holes and are formed at both ends in the longitudinal direction of the decorative frame 44.

[0034] As shown in Figures 5 to 8, the emergency light unit 13 is fixed to the fixture body 11 via a fixing member 62 that is separate from the fixture body 11. The fixing member 62 is located inside the recess 23 in the fixture body 11.

[0035] The fixing member 62 is integrally formed from, for example, a metal plate. The fixing member 62 has a roughly U-shape and comprises a pair of support columns 64, a first fixing portion 65 provided on each of these support columns 64, and a second fixing portion 66 connecting the support columns 64, 64. As shown in Figures 5 and 6, the fixing members 62 are arranged in pairs, separated in the longitudinal direction of the fixture body 11, and support both ends of the emergency light unit 13 in the longitudinal direction.

[0036] The support columns 64 are in the shape of straight plates and are spaced apart from each other with their thickness directions facing each other. A first fixing portion 65, which is bent from one end of the support column 64, is fixed to the top surface portion 19, so that the support column 64 is positioned along the side surface portion 20 of the fixture body 11. A hole 65a is formed in the first fixing portion 65, and it is fixed to the lower surface of the top surface portion 19 of the fixture body 11 by screwing or the like through this hole 65a.

[0037] Furthermore, a second fixing portion 66 is connected between the other ends of the support portion 64. Therefore, the second fixing portion 66 is located apart from the first fixing portion 65 in the longitudinal direction of the support portion 64. The second fixing portion 66 is located below the top surface portion 19, in a planar shape parallel or substantially parallel to the bottom surface of the top surface portion 19. Therefore, the top surface portion 19, the support portions 64, 64 and the second fixing portion 65 form a frame shape, and the area enclosed by these forms a rectangular opening. A hole 66a is formed in the second fixing portion 66, and the emergency light unit 13 is fixed to the mounting portion 60 of the decorative frame 44 by screws or the like through this hole 66a. In this embodiment, a reinforcing rib 66b is formed in the second fixing portion 66. The rib 66b rises from one edge of the second fixing portion 66 and extends between the support columns 64, 64, and by making the cross-sectional shape of the second fixing portion 66 L-shaped, the support strength of the emergency light unit 13 by the second fixing portion 66 is ensured.

[0038] In the mounting position where the emergency light unit 13 is attached to the recess 23, a second space 68, which serves as a wiring space, is formed between the top surface 19, which is the inner surface of the fixture body 11, and the emergency light unit 13. The power supply unit 43, which protrudes most upward from the top surface 19, is positioned below the bottom surface of the top surface 19, and a longitudinal second space 68 is formed at the top of the emergency light unit 13, extending from both ends in the longitudinal direction of the emergency light unit 13. The second space 68 is surrounded by the top surface 19 and the side surface 20 of the fixture body 11, and constitutes the remaining part of the recess 23. The terminal block 42, the power supply unit 43, etc. are located within the second space 68, and the second wiring hole 53 communicates with the second space 68, allowing the second space 68 to communicate with the outside air. The ends of the second external wiring, etc., which are pulled in from the second wiring hole 53, are located within the second space 68.

[0039] In this embodiment, the second space 68 is not partitioned on the side facing the light source unit 12 and is in communication with the first space 36. That is, since the emergency light unit 13 is fixed only by a frame-shaped fixing member 62, there is no member interposed between the first space 36 and the second space 68 so as to cross the recess 23, and the first space 36 and the second space 68 are connected in the longitudinal direction through an opening surrounded by the top surface 19, the support column 64 of the fixing member 62 and the second fixing portion 66.

[0040] Next, the operation of the lighting device 10 will be explained.

[0041] The first external wiring, which is drawn in through the first wiring hole 28, is electrically connected to the terminal block 25 for the fixture body 11 installed on the ceiling surface.

[0042] Furthermore, the emergency light unit 13 is fixed to the fixture body 11 by fixing members 62. The pair of fixing members 62 are fixed by screwing the first fixing part 65 to the lower surface of the top part 19 of the fixture body 11, and the emergency light unit 13 is fixed by screwing the mounting part 62 of the decorative frame 44 to the hole 66a of the second fixing part 66 of the fixing member 62. In this state, the second external wiring is pulled through the second wiring hole 53 into the second space 68 formed on the back side of the emergency light unit 13 and electrically connected to the terminal block 42 of the emergency light unit 13, thereby electrically connecting the power supply unit 43 of the emergency light unit 13 to an external power source.

[0043] Furthermore, the light source unit 12 is attached to the fixture body 11 by a mounting spring. The mounting spring is hooked onto the spring receiving bracket 34, suspending the light source unit 12 from the spring receiving bracket 34, and the output wiring of the normal power supply unit 26 is electrically connected to the input wiring of the light source module of the light source unit 12 via a connector. Then, by pushing up the light source unit 12, the spring force attaches the light source unit 12 to the fixture body 11.

[0044] When AC power is supplied to the lighting device 10 from an external source, AC power is supplied to the normal power supply unit 26 and the power supply unit 43 of the emergency light unit 13, respectively. The normal power supply unit 26 converts the AC power into a predetermined lighting power and supplies it to the normal light source module of the light source unit 12, causing the normal light source module to light up. In the emergency light unit 13, the charging circuit of the power supply unit 43 converts the AC power into a predetermined charging power and charges the battery of the battery device.

[0045] Furthermore, if a power outage occurs and the lighting device 10 is no longer supplied with AC power from an external source, the light source unit 12 will turn off. The emergency light unit 13 operates using power discharged from the battery in the battery device, converts the battery power from the battery device into a predetermined lighting power, and supplies it to the light source 41, causing the light source 41 to light up.

[0046] According to this embodiment, by connecting the first space 36 formed between the light source unit 12 and the inner surface of the fixture body 11 facing the light source unit 12, and the second space 68 formed between the power supply unit 43 of the emergency light unit 13 adjacent to the light source unit 12 and the inner surface of the fixture body 11 facing the power supply unit 43, a space can be formed extending from the back side of the light source unit 12 to the back side of the emergency light unit 13. Therefore, this space can be used as a wiring space, facilitating the routing of external wiring such as the first external wiring drawn from the first wiring hole 28 to the first space 36 and the second external wiring drawn from the second wiring hole 53 to the second space 68. At the same time, the heat generated when the light source unit 12 and the emergency light unit 13 are lit can be dissipated throughout the entire space extending from the first space 36 to the second space 68, suppressing heat buildup. In other words, by connecting the first space 36 and the second space 68 to form a single space, a large, integrated space with a large heat capacity can be created, and this entire space can be used for wiring and heat dissipation of the light source unit 12 and the emergency light unit 13.

[0047] In particular, since the fixture body 11 and the light source unit 12 are both elongated, and the emergency light unit 13 is located on one end of the fixture body 11, the space can be made elongated across the first space 36 and the second space 68, thereby further improving the heat dissipation of the light source unit 12 and the emergency light unit 13 when they are lit.

[0048] The fixing member 62 that secures the emergency light unit 13 to the fixture body 11 secures a first fixing part 65 at one end of a pair of spaced-apart support parts 64 to the inner surface of the fixture body 11, and secures the emergency light unit 13 to a second fixing part 66 that connects the other ends of the support parts 64. The length of the support parts 64 ensures a distance between the lower surface of the top surface 19 of the fixture body 11 to which the first fixing part 65 is secured and the emergency light unit 13, thereby forming a second space 68. Furthermore, because it is frame-shaped, the fixing member 62 does not obstruct communication between the first space 36 and the second space 68.

[0049] A first wiring hole 28 for inserting a first external wiring for supplying power to the light source unit 12 is formed in the central part of the fixture body 11, close to the light source unit 12, and a second wiring hole 53 for inserting a second external wiring for supplying power to the emergency light unit 13 is formed at one end of the fixture body 11, away from the first wiring hole 28 and close to the emergency light unit 13. This allows the first external wiring drawn in from the first wiring hole 28 and the second external wiring drawn in from the second wiring hole 53 to be easily connected to the light source unit 12 and the emergency light unit 13 without having to run them for a long distance inside the fixture body 11.

[0050] Furthermore, since the second wiring hole 53 faces the upper part of the terminal block 42, the second external wiring inserted through the second wiring hole 53 can be easily connected directly to the terminal block 42. In particular, since the second external wiring is often made of a hard, inflexible fire-resistant cable, by positioning the second wiring hole 53 facing the upper part of the terminal block 42, the second external wiring does not need to be bent or routed for a long distance inside the second space 68, and can be easily connected directly to the terminal block 42, resulting in good wiring workability.

[0051] While several embodiments of the present invention have been described, these embodiments are presented as examples only and are not intended to limit the scope of the invention. These novel embodiments can be carried out in a variety of other forms, and various omissions, substitutions, and modifications can be made without departing from the spirit of the invention. These embodiments and their variations are included in the scope and spirit of the invention, as well as in the claims of the invention and its equivalents. [Explanation of Symbols]

[0052] 10 Lighting devices 11. Main body of the device 12. Light source unit as the first light source 13. Emergency lighting unit as a second light source 28 First wiring hole 36 First spatial section 43 Power supply unit as a power supply section 53 Second wiring hole 62 Fixing member 64 Pillar section 65 First fixing part 66 Second fixing part 68 Second spatial section

Claims

1. The main body of the device and; A first light source arranged in the main body of the fixture; A second light source having a power supply unit and positioned adjacent to the first light source in the fixture body; A first space formed between the first light source and the inner surface of the fixture body facing the first light source; A second space formed between the power supply unit of the second light source and the inner surface of the fixture body facing the power supply unit of the second light source, and communicating with the first space; A lighting device characterized by having the following features.

2. The main body of the device and the first light source are each elongated in shape. The second light source is positioned at one end of the fixture body. The lighting device according to feature 1.

3. The fixing member comprises a pair of support columns positioned spaced apart from each other, a first fixing portion provided on one end of these support columns and fixed to the inner surface of the main body of the device, and a second fixing portion connecting the other ends of the support columns and to which the second light source is fixed. The lighting device according to claim 1 or 2.

4. The fixture body has a first wiring hole through which a first external wiring for supplying power to the first light source is inserted, The fixture body has a second wiring hole through which a second external wiring is inserted in order to supply power to the second light source, The lighting device according to claim 2, characterized by comprising:

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