Emergency lighting fixture

Abstract

To provide an emergency lighting fixture capable of switching between a mode in which a light source is lit for a long time in an emergency and a mode in which the light source is lit at a high luminance.SOLUTION: According to an embodiment of the present disclosure, there is provided an emergency lighting fixture including: a light source; a storage battery; a switch configured to switch a lighting mode in an emergency in which no external power source is supplied between a long-time lighting mode and a high-luminance lighting mode; and a lighting device configured to light the light source by the storage battery in the emergency in accordance with the lighting mode. The lighting device is configured to light the light source at a first dimming value for at least a first time period in the long-time lighting mode. In the high-luminance lighting mode, the light source is turned on at least for a second time period at a second dimming value higher than the first dimming value. The second time period is shorter than the first time period.SELECTED DRAWING: Figure 3

Description

[Technical Field]

[0001] The present disclosure relates to emergency lighting devices. [Background technology]

[0002] As a power source for lighting a light source in an emergency, it is desirable for the storage battery to have a long life. In order to prevent the storage battery's life from shortening, Patent Document 1 discloses an emergency lighting device in which the storage battery and the regular light source unit are housed in a specially designed position. This makes it possible to prevent the storage battery from being affected by the heat generated by the regular light source unit. [Prior art documents] [Patent documents]

[0003] [Patent Document 1] Japanese Patent Application Laid-Open No. 2016-134204 Summary of the Invention [Problem to be solved by the invention]

[0004] In an emergency, it may be desirable to prioritize high brightness over long-term lighting of the light source using a storage battery. However, the above-described method does not allow switching between a mode in which the light source is lit for a long time and a mode in which the light source is lit at high brightness.

[0005] In order to solve the above-mentioned problems, the present disclosure aims to provide an emergency lighting device that can be switched between a mode in which the light source is turned on for a long time in an emergency and a mode in which the light source is turned on at high brightness. [Means for solving the problem]

[0006] An aspect of the present disclosure is a lighting device including a light source, a storage battery, a switch for switching a lighting mode in an emergency when no external power source is supplied between a long-time lighting mode and a high-brightness lighting mode, and a lighting device for lighting the light source using the storage battery in an emergency according to the lighting mode, The lighting device includes: In the long-time lighting mode, the light source is turned on for at least a first time at a first dimming value, and in the high-brightness lighting mode, the light source is turned on for at least a second time at a second dimming value higher than the first dimming value; Preferably, the second time period is shorter than the first time period, and the lighting device is an emergency lighting device. [Effects of the Invention]

[0007] The emergency lighting device of the present disclosure is provided with a switch that switches the lighting mode of the light source in an emergency between a long-time lighting mode and a high-brightness lighting mode, and the lighting device lights the light source in accordance with the lighting mode set by the switch. This makes it possible to provide an emergency lighting device that can be switched between a mode in which the light source is lit for a long time and a mode in which the light source is lit at a high brightness in an emergency. [Brief explanation of the drawings]

[0008] [Figure 1] 1 is a perspective view of an emergency lighting device according to a first embodiment of the present disclosure. [Figure 2] 1 is an exploded view of an emergency lighting device according to a first embodiment of the present disclosure. [Figure 3] 1 is a diagram illustrating a switch of an emergency lighting device according to a first embodiment of the present disclosure. FIG. [Figure 4] 4 is a flowchart showing processing executed by the lighting device according to the first embodiment of the present disclosure. [Figure 5] 4 is a flowchart showing processing executed by the lighting device according to the first embodiment of the present disclosure. [Figure 6] 4 is a flowchart showing processing executed by the lighting device according to the first embodiment of the present disclosure. [Figure 7] 10 is a flowchart showing processing executed by a lighting device according to a second embodiment of the present disclosure. [Figure 8] 10 is a configuration example of an emergency lighting device according to a third embodiment of the present disclosure. [Figure 9]FIG. 10 is a diagram illustrating a detection area of an illuminance sensor according to a third embodiment of the present disclosure. [Figure 10] 10 is a flowchart showing a process executed by a lighting device according to a third embodiment of the present disclosure in an emergency. [Figure 11] 10 is a configuration example of an emergency lighting device according to a fourth embodiment of the disclosure. [Figure 12] 1A and 1B are diagrams illustrating a first method for achieving a wide-angle light distribution of light from a light source. [Figure 13] 10A and 10B are diagrams illustrating a first method for narrowing the light angle of the light source. [Figure 14] 10A and 10B are diagrams illustrating a second method for wide-angle light distribution of light from a light source. [Figure 15] 10A and 10B are diagrams illustrating a second method for narrowing the light angle of the light source. [Figure 16] 10A and 10B are diagrams illustrating a third method for wide-angle light distribution of light from a light source. [Figure 17] 10A and 10B are diagrams illustrating a third method for narrowing the light angle of the light source. [Figure 18] 10A and 10B are diagrams illustrating a fourth method for wide-angle light distribution of light from a light source. [Figure 19] 10A and 10B are diagrams illustrating a fourth method for narrowing the light angle of the light source. [Figure 20] 10A and 10B are diagrams illustrating a fifth method for distributing light from a light source in a wide angle and a narrow angle. DETAILED DESCRIPTION OF THE INVENTION

[0009] Embodiments of the present disclosure will be described with reference to the drawings. The same or corresponding components will be designated by the same reference numerals, and repeated description may be omitted.

[0010] Embodiment 1 Fig. 1 is a perspective view of an emergency lighting device 100 according to a first embodiment of the present disclosure. Fig. 2 is an exploded view of the emergency lighting device 100 according to the first embodiment of the present disclosure. The emergency lighting device 100 is attached to a mounting portion such as a ceiling or a wall. The emergency lighting device 100 is, for example, an emergency light or an emergency guide light.

[0011] In both emergency situations where the supply of external power is cut off, the emergency light and the guide light use the storage battery 4 to light the light source 2. In normal times when an external power source is supplied, the emergency light lights the light source 2 and charges the storage battery 4. In contrast, the emergency light only charges the storage battery 4 and does not light the light source 2.

[0012] In the case of emergency lights, the Fire Service Act of Japan requires that the light source 2 be continuously lit for 20 or 60 minutes using the storage battery 4. On the other hand, the Building Standards Act of Japan requires that the light source 2 be continuously lit for 30 or 60 minutes using the storage battery 4 in the case of emergency lights.

[0013] The emergency lighting device 100 includes a light source 2, a lighting device 3, and a storage battery 4.

[0014] <Apparatus body 1> The fixture body 1 houses the light source 2, the lighting device 3, the storage battery 4, etc. The fixture body 1 may have any shape as long as it can house the light source 2, the lighting device 3, and the storage battery 4.

[0015] <Light source 2> The light source 2 is a light emitting element that lights up when power is supplied, such as an LED (Light Emitting Diode), etc. The light source 2 is not limited to an LED, but may also be a laser element, an organic EL, an incandescent lamp, etc.

[0016] <Lighting device 3> The lighting device 3 controls the lighting of the light source 2 and the charging / discharging and inspection of the storage battery 4. The lighting device 3 lights up the light source 2 in an emergency according to a lighting mode set by a switch 6, which will be described later.

[0017] <Storage Battery 4> The storage battery 4 is a rechargeable battery. The storage battery 4 is, for example, a secondary battery such as a nickel-cadmium battery, a nickel-metal hydride battery, or a lithium-ion battery, or an all-solid-state battery. In an emergency, the storage battery 4 supplies power to the light source 2 via the lighting device 3. The number of storage batteries 4 may be one or more.

[0018] FIG. 3 is a diagram illustrating a switch 6 of the emergency lighting device 100 according to the first embodiment of the present disclosure. The lighting device 3 of the emergency lighting device 100 is provided with a switch 6 for switching the lighting mode of the light source 2 in an emergency. This switch 6 allows a user to switch between the long-time lighting mode and the high-brightness lighting mode. In the long-time lighting mode, the lighting device 3 turns on the light source 2 for at least a first time at a first dimming value. On the other hand, in the high-brightness lighting mode, the lighting device 3 turns on the light source 2 for at least a second time at a second dimming value higher than the first dimming value. The first time is, for example, 50 minutes, but may be 20 minutes or more for an emergency light or 30 minutes or more for an emergency light. The second time is, for example, 30 minutes, but may be 20 minutes or more for an emergency light or 30 minutes or more for an emergency light, as long as it is shorter than the first time.

[0019] The first dimming value, the second dimming value, the first time, and the second time are stored in the memory of the lighting device 3.

[0020] 4 is a flowchart showing the processing executed by the lighting device 3 according to the first embodiment of the present disclosure. First, the processing starts.

[0021] Next, it is determined whether the switch 6 is set to the long-time lighting mode or the high-brightness lighting mode (step S01). If it is set to the high-brightness lighting mode, the dimming value of the light source 2 in an emergency is set to a second dimming value and stored in memory (step S02). The second dimming value is, for example, 100%, but it may be any value higher than the first dimming value.

[0022] On the other hand, if the long-time lighting mode is selected, the dimming value of the light source 2 in an emergency is set to a first dimming value and stored in memory (step S03). Note that the first dimming value is, for example, 60%, but this is just an example. Finally, the process ends.

[0023] 5 is a flowchart showing the processing executed by the lighting device 3 according to the first embodiment of the present disclosure. Here, a case where the emergency lighting device 100 is an emergency light will be described.

[0024] First, the process starts. Next, it is determined whether or not power is being supplied from an external power source (step S11). If no power is being supplied, this indicates a power outage. In this case, the memory is referenced and the dimming value of the light source 2 in an emergency is read (step S12). The read dimming value is either the first dimming value or the second dimming value. Furthermore, the light source 2 is turned on at the read dimming value (step S13).

[0025] On the other hand, if the supply is confirmed in step S11, the light source 2 is turned off (step S14).

[0026] In step S11, in addition to determining whether power is being supplied from an external power source, it may also be determined whether an inspection start button for the storage battery 4 has been pressed. If it is determined that the button has been pressed, the process proceeds to step S12, and if it is not determined that the button has been pressed, the process proceeds to step S14, thereby making it possible to check whether the lighting mode has been switched correctly. This also applies to FIG. 6 below.

[0027] 6 is a flowchart showing the processing executed by the lighting device 3 according to the first embodiment of the present disclosure. Here, a case where the emergency lighting device 100 is an emergency light will be described.

[0028] First, the process starts. Next, it is determined whether or not power is being supplied from an external power source (step S21). If no power is being supplied, this indicates a power outage. In this case, the memory is referenced and the dimming value of the light source 2 in an emergency is read (step S22). As with the emergency light in FIG. 5, the read dimming value is either the first dimming value or the second dimming value. However, in the case of an emergency light, the lighting device 3 turns on the light source 2 at a corrected dimming value obtained by multiplying the read dimming value by a coefficient a between 0 and 1 (step S23).

[0029] Here, in an emergency emergency exit light, it is sufficient to turn on light source 2 at a brightness that ensures floor illuminance of 2 lx or more, and it does not necessarily have to be turned on at the same brightness as normal. Therefore, by turning on light source 2 at a corrected dimming value obtained by multiplying the read dimming value by coefficient a between 0 and 1, it is possible to make the brightness of light source 2 darker in an emergency than normal, regardless of the lighting mode. Note that coefficient a is preferably around 0.8, but it is sufficient if it is between 0 and 1.

[0030] On the other hand, if the supply is confirmed in step S21, the lighting device 3 turns on the light source 2 (step S24).

[0031] As described above, in the present disclosure, the switch 6 is provided to switch the lighting mode of the light source 2 in an emergency between a long-time lighting mode and a high-brightness lighting mode, and the lighting device 3 lights the light source 2 in accordance with the lighting mode set by the switch 6. In the long-time lighting mode, the light source 2 is turned on for a first period of time at a first dimming value. On the other hand, in the high-brightness lighting mode, the light source 2 is turned on at a second dimming value that is higher than the first dimming value.

[0032] In the long-time lighting mode, a corrected dimming value obtained by multiplying the first dimming value by a coefficient a greater than or equal to 0 and less than 1 may be used, and in the high-brightness lighting mode, a corrected dimming value obtained by multiplying the second dimming value by the coefficient a may be used.

[0033] This makes it possible to provide an emergency lighting device that can be used by switching between a mode in which the light source is turned on for a long time in an emergency and a mode in which the light source is turned on at high brightness.

[0034] Embodiment 2 In the high-brightness lighting mode, the light source 2 is turned on at high brightness, so it is thought that the voltage of the storage battery 4 will be consumed more quickly than in the long-time lighting mode. Therefore, in this embodiment, switching to the high-brightness lighting mode is permitted only when an inspection determines that there is no deterioration in the storage battery 4. Note that the following describes changes from the first embodiment.

[0035] FIG. 7 is a flowchart showing a process executed by the lighting device 3 according to the second embodiment of the present disclosure. First, the process starts. Next, it is determined whether the inspection start button has been pressed (step S31). If it is determined that the button has not been pressed, the process returns to step S31. On the other hand, if it is determined that the button has been pressed, charging from the AC power source AC to the storage battery 4 is cut off to generate a pseudo-power outage (step S32). Then, a timer (not shown) starts timing (step S33). Then, the storage battery 4 is discharged and the light source 2 is turned on (step S34). Then, the voltage of the storage battery 4 is measured to determine whether the voltage has reached a predetermined voltage value (step S35). If it is not determined that the voltage has reached a predetermined voltage value, the process returns to step S34 and the light source 2 is maintained on. On the other hand, if it is determined that the voltage has reached a predetermined voltage value, the process checks whether the lighting time measured by the timer is equal to or longer than a predetermined time (step S36). The predetermined time here is equal to or longer than 20 or 60 minutes for emergency lights and equal to or longer than 30 or 60 minutes for emergency lights.

[0036] If the lighting time is equal to or longer than the specified time in step S36, it means that the storage battery 4 under inspection is not deteriorated. In this case, the process ends. As a result, the lighting mode set by the switch 6 is maintained. This means that if the high brightness lighting mode is set by the switch 6, the light source 2 will be lit at the second dimming value in an emergency.

[0037] On the other hand, if the lighting time is less than the specified time, it means that the storage battery 4 under inspection has deteriorated over time. In this case, the lighting device 3 sets the lighting mode of the light source 2 in an emergency to the long-time lighting mode regardless of the setting of the switch 6 (step S37). Specifically, the lighting device 3 sets the dimming value of the light source 2 in an emergency to the first dimming value and stores it in memory.

[0038] In this way, in this embodiment, the lighting mode set by the switch 6 is adopted only when the storage battery 4 is inspected and it is determined that there is no deterioration. On the other hand, if deterioration is found, the lighting mode is forcibly switched to the long-term lighting mode. This makes it possible to control the lighting mode according to the deterioration state of the storage battery 4.

[0039] Embodiment 3 The emergency lighting device 100 of this embodiment turns on the light source 2 in the high-brightness lighting mode when the illuminance provided by the other emergency lighting device 50 is insufficient due to a malfunction or other reason. Here, changes from the first embodiment will be described.

[0040] FIG. 8 shows a configuration example of an emergency lighting device 100 according to a third embodiment of the present disclosure. An illuminance sensor 5 is attached to a lighting device 3 of this embodiment. The illuminance sensor 5 measures illuminance by receiving light reflected from a floor or the like within a detection area 31 (not shown). In the lighting device 3 of this embodiment, the light source 2 is turned on in the long-time lighting mode or the high-intensity lighting mode, as in the first embodiment. However, in this embodiment, when the illuminance provided by other emergency lighting devices 50 is insufficient due to a malfunction or other reason, the lighting device 3 turns on the light source 2 in the high-intensity lighting mode.

[0041] 9 is a diagram illustrating a detection area 31 of an illuminance sensor 5 according to a third embodiment of the present disclosure. In the illuminance sensor 5, the detection area 31 is set so that the illuminance from other emergency lighting devices 50 arranged around the emergency lighting device 100 can be detected. Note that the other emergency lighting devices 50 may be identical to the emergency lighting device 100.

[0042] 10 is a flowchart showing a process executed by the lighting device 3 according to the third embodiment of the present disclosure in an emergency. Here, a case where the emergency lighting device 100 is an emergency light will be described.

[0043] First, the process is started. At the start of the process, it is assumed that the lighting device 3 is lighting the light source 2 in the long lighting mode according to the setting of the switch 6.

[0044] Next, it is determined whether the illuminance measured by the illuminance sensor 5 is equal to or greater than a preset threshold value (step S41). In an emergency ...

[0045] If it is not determined in step S41 that the illuminance is not equal to or greater than the threshold, this means that the illuminance from the emergency lighting fixture 50 included in the detection area 31 is insufficient due to a malfunction or other reason. Therefore, the lighting device 3 turns on the light source 2 in high-brightness lighting mode regardless of the setting of the switch 6 (step S42). In this case, the second dimming value is 100% and the second time is 30 minutes, but these values are merely examples and are not limiting. Furthermore, as in the first embodiment, a corrected dimming value obtained by multiplying the second dimming value by a coefficient a that is equal to or greater than 0 and less than 1 may be used.

[0046] On the other hand, if it is determined that the value is equal to or greater than the threshold value, it means that the emergency lighting fixtures 50 included in the detection area 31 are not malfunctioning and that the illuminance is not insufficient. Therefore, the lighting device 3 keeps the light source 2 lit in the long-time lighting mode (step S43). Finally, the process ends.

[0047] As described above, the emergency lighting device 100 of this embodiment turns on the light source 2 in the high-brightness lighting mode when the illuminance provided by the other emergency lighting device 50 is insufficient. This makes it possible to ensure the necessary illuminance even if the other emergency lighting device 50 fails.

[0048] The above describes a method for indirectly determining whether another emergency lighting device 50 has failed based on the illuminance of the illuminance sensor 5. However, the emergency lighting device 100 may be connected to the other emergency lighting device 50 via a wired or wireless connection, and the emergency lighting device 100 may determine a failure if it detects an abnormality in a signal received from the other emergency lighting device 50. For example, a simple determination method using pull-up and pull-down is conceivable, in which the emergency lighting device 100 and the other emergency lighting device 50 are connected by two communication lines, and a high signal from the communication signal from the other emergency lighting device 50 indicates a failure, and a low signal indicates normal operation. This method is also common to the following embodiments.

[0049] Embodiment 4 Here, the changes from the third embodiment will be explained.

[0050] 11 shows a configuration example of an emergency lighting device 100 according to a fourth embodiment of the present disclosure. The emergency lighting device 100 of this embodiment is equipped with a movable lens 20 that controls the light distribution of the light source 2. In this embodiment, similar to the third embodiment, when the illuminance provided by the other emergency lighting devices 50 is insufficient, the light source 2 is turned on in the high-brightness lighting mode. However, this embodiment differs from the third embodiment in that the lens 20 is moved to provide a wider light distribution angle than the long-time lighting mode.

[0051] Hereinafter, several methods for changing the light distribution by moving the lens 20 will be described with reference to FIGS.

[0052] First Method 12 and 13 are diagrams illustrating a first method for distributing light from light source 2 in a wide angle and a narrow angle, respectively. Here, light source 2 is attached to substrate 23. Lens 20 includes first lens 21 and second lens 22 disposed on optical axis 26 of light emitted from light source 2.

[0053] The first lens 21 provided at the front stage on the optical axis 26 is attached to a first fixture 211. The first fixture 211 is, for example, a cylindrical housing, and a cross section is shown here. A groove 215 is formed on the inner side of the wall of the cylinder of the first fixture 211. A part of the second fixture 212, which will be described later, is inserted into the inside of the groove 215.

[0054] The second lens 22 provided at the rear stage is attached to a second fixture 212. The second fixture 212 is also a cylindrical housing, and a cross section of the second lens 22 and the second fixture 212 are fixed.

[0055] The tip of first fixture 211 that is not connected to second fixture 212 slides on sliding surface 241 of member 24. Sliding surface 241 faces in a direction that is not perpendicular to optical axis 26. By sliding member 24 with knob 25, first fixture 211 can be moved to any position along sliding surface 241, and first fixture 211 can be raised and lowered.

[0056] 12, when the position of the first fixture 211 is lowered, the overlap between the first fixture 211 and the second fixture 212 in the groove 215 increases. As a result, the distance between the first lens 21 and the second lens 22 becomes shorter, thereby achieving a wide-angle light distribution.

[0057] 13, when the position of the first fixture 211 is raised, the overlap in the groove 215 decreases. As a result, the distance between the first lens 21 and the second lens 22 becomes greater, allowing for a narrow light distribution angle.

[0058] The knob 25 may be integrated with the switch 6. This makes it possible to set the lighting mode of the light source 2 in an emergency and simultaneously switch the light distribution of the lens 20. This is also common to the second to fifth methods described below.

[0059] Second Method 14 and 15 are diagrams illustrating a second method for distributing light from light source 2 at a wide angle and a narrow angle, respectively. In this method, first lens 21 and first fixture 211 are fixed. Also, the tip of second fixture 212 slides on sliding surface 241 of member 24, causing second fixture 212 to move up and down.

[0060] 14, when the position of second fixture 212 is raised, the overlap between first fixture 211 and second fixture 212 in groove 215 increases. As a result, the distance between first lens 21 and second lens 22 becomes shorter, allowing for a wide-angle light distribution.

[0061] 15, when the position of the second fixture 212 is lowered, the overlap in the groove 215 decreases. As a result, the distance between the first lens 21 and the second lens 22 becomes greater, allowing for a narrow light distribution angle.

[0062] The Third Method 16 and 17 are diagrams illustrating a third method for distributing light from light source 2 in a wide light angle and a narrow light angle, respectively. In this example, second lens 22 is fixed. First lens 21 has a protrusion 214 protruding in a direction perpendicular to optical axis 26 on its side. First lens 21 is attached to member 29. Member 29 has groove 213 extending in a direction not perpendicular to optical axis 26, and protrusion 214 is fitted into groove 213. First lens 21 can be raised and lowered on optical axis 26 by sliding member 29 along groove 213 using knob 25.

[0063] As shown in FIG. 16, when the member 24 is pulled away from the optical axis 26 using the knob 25, the position of the first lens 21 is lowered, and the distance between the first lens 21 and the second lens 22 is shortened, thereby achieving a wide-angle light distribution.

[0064] On the other hand, as shown in FIG. 17, when the member 24 is pulled by the knob 25 in the direction approaching the optical axis 26, the position of the first lens 21 rises, and the distance between the first lens 21 and the second lens 22 becomes shorter, thereby achieving a narrow angle light distribution.

[0065] The Fourth Method 18 and 19 are diagrams illustrating a fourth method for distributing light from light source 2 in a wide-angle and narrow-angle manner, respectively. Lens 20 in this example includes wide-angle lens 28 and narrow-angle lens 27. Wide-angle lens 28 has a shorter focal length than narrow-angle lens 27. Wide-angle lens 28 and narrow-angle lens 27 are formed side by side on member 30 that is disposed perpendicular to optical axis 26. By sliding member 30 with knob 25, it is possible to switch between wide-angle lens 28 and narrow-angle lens 27. That is, moving wide-angle lens 28 onto optical axis 26 as shown in FIG. 18 results in a wide-angle light distribution, whereas moving narrow-angle lens 27 onto optical axis 26 as shown in FIG. 19 results in a narrow-angle light distribution.

[0066] Fifth Method 20 is a diagram illustrating a fifth method for distributing light from light source 2 in a wide-angle and narrow-angle manner. As with the fourth method, lens 20 here also includes wide-angle lens 28 and narrow-angle lens 27. However, this method differs from the fourth method in that light source 2 is individually arranged for each of wide-angle lens 28 and narrow-angle lens 27. In the high-brightness lighting mode, wide-angle light distribution is achieved by turning on light source 2-1 for wide-angle lens 28, and in the long-time lighting mode, narrow-angle light distribution is achieved by turning on light source 2-2 for narrow-angle lens 27.

[0067] As described above, in the high-brightness lighting mode of this embodiment, the lens 20 is moved to provide a wider light distribution angle than in the long-time lighting mode, and then the light source 2 is turned on. This makes it possible to cover the lighting range of other emergency lighting devices 50 that have failed, thereby improving the reliability of ensuring the required illuminance.

[0068] The present disclosure is not limited to the above-described embodiments, and various modifications can be made in the implementation stage without departing from the spirit of the present disclosure. Furthermore, the embodiments may be implemented in appropriate combinations, and in such cases, the combined effects can be obtained.

[0069] Various aspects of the present disclosure are summarized below as appendices. (Appendix 1) a light source; a storage battery; a switch for switching a lighting mode between a long-time lighting mode and a high-brightness lighting mode in an emergency when no external power source is supplied; and a lighting device for lighting the light source by the storage battery in an emergency in accordance with the lighting mode; The lighting device includes: In the long-time lighting mode, the light source is turned on for at least a first time at a first dimming value, and in the high-brightness lighting mode, the light source is turned on for at least a second time at a second dimming value higher than the first dimming value; The second time period is shorter than the first time period. (Appendix 2) Further provided with an illuminance sensor, The lighting device includes: 2. The emergency lighting device according to claim 1, wherein when the illuminance measured by the illuminance sensor is not recognized to be equal to or greater than a preset threshold, the light source is turned on in the high-brightness lighting mode regardless of the setting of the switch. (Appendix 3) The lighting device includes: 2. The emergency lighting device according to claim 1, wherein when an abnormality is detected in a signal received from another emergency lighting device, the light source is turned on in the high-brightness lighting mode regardless of the setting of the switch. (Appendix 4) further comprising a lens disposed on the optical axis of the light emitted from the light source, 4. The emergency lighting device according to claim 1, wherein in the high-brightness lighting mode, the light source is turned on after the light distribution angle of the light source is made wider by the lens than in the long-time lighting mode. (Appendix 5) The lighting device includes: a process of cutting off charging of the storage battery from the external power supply; a process of turning on the light source based on a discharge voltage from the storage battery; a process of determining whether the lighting time of the light source from when the storage battery starts discharging until the voltage reaches a predetermined value is equal to or longer than a specified time; a process of setting the lighting mode to the long lighting mode regardless of the setting of the switch when the lighting time is not equal to or longer than a specified time; 5. The emergency lighting device of any one of claims 1 to 4, further configured to perform the following: (Appendix 6) the lens includes a first lens provided in a front stage on the optical axis of the light source and a second lens provided in a rear stage, a first fixture to which the first lens is fixed, a second fixture to which the second lens is fixed, a member having a sliding surface in a direction not perpendicular to the optical axis and connected to the first fixture or the second fixture at the sliding surface, and a knob connected to the member and for shifting the position of the first fixture or the second fixture on the sliding surface of the member; Equipped with 5. The emergency lighting device according to claim 4, wherein in the high-brightness lighting mode, the first fixing device or the second fixing device is shifted by the knob so that the distance between the first lens and the second lens is closer than in the long-time lighting mode. (Appendix 7) the lens includes a first lens provided in front of the optical axis of the light source and having a protrusion protruding in a direction perpendicular to the optical axis, and a second lens provided in back of the optical axis, a member having a groove extending in a direction not perpendicular to the optical axis and fitting the protrusion into the groove; and a knob connected to the member and configured to shift the position of the member along the groove to move the first lens on the optical axis; Equipped with 5. The emergency lighting device according to claim 4, wherein in the high-brightness lighting mode, the first lens is moved by the knob so as to reduce the distance between the first lens and the second lens. (Appendix 8) a member disposed perpendicular to the optical axis of the light source; and a knob for sliding the member; Equipped with the lenses include a wide-angle lens and a narrow-angle lens having a focal length shorter than that of the wide-angle lens, the wide-angle lens and the narrow-angle lens being arranged side by side on the member, 5. The emergency lighting device according to claim 4, wherein in the high-brightness lighting mode, the knob shifts the member so that the wide-angle lens is positioned on the optical axis of the light source. (Appendix 9) a member disposed perpendicular to the optical axis of the light source; the lenses include a wide-angle lens and a narrow-angle lens having a focal length shorter than that of the wide-angle lens, the wide-angle lens and the narrow-angle lens being arranged side by side on the member, the light sources are plural and are individually arranged for the wide-angle lens and the narrow-angle lens, 5. The emergency lighting device according to claim 4, wherein the light source for the wide-angle lens is turned on in the high-brightness lighting mode. [Explanation of symbols]

[0070] 1 fixture body, 2 light source, 3 lighting device, 4 storage battery, 5 illuminance sensor, 6 switch, 20 lens, 21 first lens, 22 second lens, 23 board, 24 component, 26 optical axis, 27 narrow-angle lens, 28 wide-angle lens, 29 component, 30 component, 31 detection area, 50 emergency lighting fixture, 100 emergency lighting fixture, 211 first fixing device, 212 second fixing device, 213 groove, 214 protrusion, 215 groove, 241 sliding surface

Claims

1. a light source; a storage battery; a switch for switching a lighting mode between a long-time lighting mode and a high-brightness lighting mode in an emergency when no external power source is supplied; and a lighting device for lighting the light source by the storage battery in an emergency in accordance with the lighting mode; The lighting device includes: In the long-time lighting mode, the light source is turned on for at least a first time at a first dimming value, and in the high-brightness lighting mode, the light source is turned on for at least a second time at a second dimming value higher than the first dimming value; The second time period is shorter than the first time period.

2. Further provided with an illuminance sensor, The lighting device includes:

2. The emergency lighting device according to claim 1, wherein when the illuminance measured by the illuminance sensor is not determined to be equal to or greater than a preset threshold, the light source is turned on in the high-brightness lighting mode regardless of the setting of the switch.

3. The lighting device includes: The emergency lighting device according to claim 1, wherein when an abnormality is detected in a signal received from another emergency lighting device, the light source is turned on in the high-brightness lighting mode regardless of a setting of the switch.

4. further comprising a lens disposed on the optical axis of the light emitted from the light source, 4. The emergency lighting device according to claim 1, wherein in the high-brightness lighting mode, the light source is turned on after the light distribution angle of the light source is made wider by the lens than in the long-time lighting mode.

5. The lighting device includes: a process of cutting off charging of the storage battery from the external power supply; a process of turning on the light source based on a discharge voltage from the storage battery; a process of determining whether the lighting time of the light source from when the storage battery starts discharging until the voltage reaches a predetermined value is equal to or longer than a specified time; a process of setting the lighting mode to the long lighting mode regardless of the setting of the switch when the lighting time is not equal to or longer than a specified time; 4. An emergency lighting device according to claim 1, further configured to:

6. the lens includes a first lens provided in a front stage on the optical axis of the light source and a second lens provided in a rear stage, a first fixture to which the first lens is fixed, a second fixture to which the second lens is fixed, a member having a sliding surface in a direction not perpendicular to the optical axis and connected to the first fixture or the second fixture at the sliding surface, and a knob connected to the member and for shifting the position of the first fixture or the second fixture on the sliding surface of the member; Equipped with 5. The emergency lighting device according to claim 4, wherein the first fixing device or the second fixing device is shifted by the knob so that the distance between the first lens and the second lens is closer in the high-brightness lighting mode than in the long-time lighting mode.

7. the lens includes a first lens provided in front of the optical axis of the light source and having a protrusion protruding in a direction perpendicular to the optical axis, and a second lens provided in back of the optical axis, a member having a groove extending in a direction not perpendicular to the optical axis and fitting the protrusion into the groove; and a knob connected to the member and configured to shift the position of the member along the groove to move the first lens on the optical axis; Equipped with 5. The emergency lighting device according to claim 4, wherein the first lens is moved by the knob so as to reduce the distance between the first lens and the second lens in the high brightness lighting mode.

8. a member disposed perpendicular to the optical axis of the light source; and a knob for sliding the member; Equipped with the lenses include a wide-angle lens and a narrow-angle lens having a focal length shorter than that of the wide-angle lens, the wide-angle lens and the narrow-angle lens being arranged side by side on the member; 5. The emergency lighting device according to claim 4, wherein in the high brightness lighting mode, the knob shifts the member so that the wide-angle lens is positioned on the optical axis of the light source.

9. a member disposed perpendicular to the optical axis of the light source; the lenses include a wide-angle lens and a narrow-angle lens having a focal length shorter than that of the wide-angle lens, the wide-angle lens and the narrow-angle lens being arranged side by side on the member; the light sources are plural and are individually arranged for the wide-angle lens and the narrow-angle lens, 5. The emergency lighting device according to claim 4, wherein the light source for the wide-angle lens is turned on in the high-brightness lighting mode.

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