JP6405801B2 - Lighting lamp and lighting device - Google Patents

Description

  The present invention relates to an illumination lamp, and more particularly to a technique for notifying an abnormal state of a lighting device that turns on a light source.

Conventionally, there is a lighting device that can reliably notify before the occurrence of a malfunction due to long-term use and has a relatively small change in lighting effect at the start of notification and a lighting fixture using the same (for example, Patent Document 1).
Conventionally, even if a failure occurs in the light emitting unit or its lighting device, etc., it is possible to continue lighting by emergency response, and the structure is simple, avoiding upsizing, and relatively inexpensive. There is a light emitting diode illumination device (see, for example, Patent Document 2).

  Japanese Patent Application Laid-Open No. 2004-228561 is an illumination device that turns on a plurality of light sources, each of which is associated with at least one of the light sources and that switches at least on / off of power supply to the corresponding light source. And at least one of the light sources is lit, the cumulative wear amount that monotonously increases is measured, and a plurality of life threshold values corresponding to the light source driving unit is compared with the cumulative wear amount. In addition, there is a technique of an illuminating device including a control unit that performs stepwise notification by performing control so as to change the lighting state of each light source with respect to the light source driving unit corresponding to the life threshold value for which the cumulative wear amount has exceeded. It is disclosed.

  In Patent Document 2, a large number of light emitting diodes are arranged to form a predetermined overall light distribution pattern when the entire light is turned on, and the light emitting diodes are divided into two or more, and each of the lighting units is turned on. A light-emitting unit configured to form a segmented light distribution pattern similar to the predetermined overall time-distributed pattern at times; and 2 arranged so that the light-emitting diodes of the light-emitting unit are lit independently for each segment A technology of a light-emitting diode illuminating device including at least a set of segmented light-emitting diode lighting devices is disclosed.

JP 2012-094267 A JP 2004-355869 A

However, since the technique described in Patent Document 1 performs control so as to periodically change the lighting state of the light source (that is, with flicker), an illumination space with an uncomfortable feeling and anxiety is obtained. Moreover, the problem in the case where the cumulative consumption amount of the light source driving unit exceeds the lifetime threshold cannot be solved.
The technique described in Patent Document 2 assumes a studio lighting device that is required to continue lighting by emergency response even if a failure occurs in the light emitting unit or its lighting device. There are two or more groups of light-emitting diodes, and two or more sets of light-emitting diode lighting devices arranged so that the light-emitting diodes are lit independently in units of units. However, there is a problem that the structure is complicated, the lighting device is increased in size, and the lighting device becomes expensive.

  The present invention has been made in view of the above, and an object thereof is to safely notify an abnormal state of a lighting device that turns on a light source without causing discomfort and anxiety with a small and simple configuration. It is providing the illumination lamp and illuminating device which can do.

The illumination lamp which concerns on 1 aspect of this invention converts the alternating current power input from the external power supply (9) into 1st lighting power, and outputs the 1st lighting power to the 1st output path | route (63). Yes and (270), a current limiting device for outputting the second lighting power generates the second lighting power by the limiting current of the AC power to the second output path (64) (280), the was a lighting device (27), a first lighting power is the first light source circuit (251) which is turned by the Rukoto supplied via the first output path (63), the second lighting power second output path (64) a second light source circuit that lights by the Rukoto supplied via (252), and a light source device having (250).

  According to the present invention, it is possible to provide an illumination lamp and an illumination device that can safely notify an abnormal state of a lighting device that turns on a light source without causing discomfort and anxiety, with a small and simple configuration.

FIG. 3 is a block diagram of the illumination lamp of the first embodiment. FIG. 3 is a circuit diagram of the illumination lamp of the first embodiment. It is a figure which shows the modification of the current limiting apparatus of the illumination lamp of Embodiment 1. FIG. 3 is a timing chart for explaining the operation of the illumination lamp according to the first embodiment. 1 is an external view of an illumination lamp according to Embodiment 1. FIG. It is a perspective view of the light source device and metal housing | casing of the illumination lamp of Embodiment 1. FIG. 1 is a perspective view of a light source device for an illumination lamp according to Embodiment 1. FIG. FIG. 3 is a perspective view of a metal housing of the illumination lamp according to the first embodiment. FIG. 3 is a perspective view of a cover of the illumination lamp according to the first embodiment. 3 is a perspective view of a resin casing of the illumination lamp of Embodiment 1. FIG. FIG. 3 is a perspective view of a lid portion of the illumination lamp according to the first embodiment. 6 is a block diagram of an illumination lamp according to Embodiment 2. FIG. 6 is a circuit diagram of an illumination lamp according to Embodiment 2. FIG. It is a perspective view of the light source device and metal housing of the illumination lamp of Embodiment 3. It is a figure which shows the illuminating device of Embodiment 4. FIG.

  Hereinafter, embodiments of the present invention will be described with reference to the drawings. In addition, the same code | symbol is attached | subjected to the part which is the same or corresponds in each figure. In the description of the embodiments, the description of the same or corresponding parts will be omitted or simplified as appropriate. In the description of the embodiment, the arrangement, orientation, etc., such as “top”, “bottom”, “left”, “right”, “front”, “back”, “front”, “back”, etc., are for convenience of explanation. It is only described as such, and does not limit the arrangement or orientation of devices, instruments, parts, and the like. About the structure of an apparatus, an instrument, components, etc., the material, a shape, a magnitude | size, etc. can be suitably changed within the scope of the present invention.

Embodiment 1 FIG.
The first embodiment will be described with reference to FIGS.
FIG. 1 is a block diagram illustrating an example of the overall configuration of the illumination lamp according to the first embodiment.

(Outline of lighting lamp)
As shown in FIG. 1, an external power source 9 is connected to the illumination lamp 1. Specifically, the path on the L side of the external power supply 9 is connected to the first terminal 410 of the illumination lamp 1, and the path on the N side of the external power supply 9 is connected to the second terminal 411 of the illumination lamp 1. .

  The illumination lamp 1 includes a lighting device (power conversion device) 27 and a light source device (light source module) 25. The first terminal 600 of the lighting device (power conversion device) 27 is connected to the first terminal 410 of the illumination lamp 1 via the first input line (first power supply line) 610, and the lighting device (power conversion device). 27 second terminals 601 are connected to a second terminal 411 of the illumination lamp 1 via a second input line (second feeder line) 611. The third terminal 602 of the lighting device (power conversion device) 27 is connected to the first terminal 256 of the light source device (light source module) 25 via the first output line 630, and the lighting device (power conversion device). The 27th fourth terminal 603 is connected to the second terminal 257 of the light source device (light source module) 25 via the second output line 631. Further, the fifth terminal 604 of the lighting device (power conversion device) 27 is connected to the third terminal 258 of the light source device (light source module) 25 via the third output line 640, and the lighting device (power conversion device). The sixth terminal 605 of 27 is connected to the fourth terminal 259 of the light source device (light source module) 25 via the fourth output line 641.

  The illumination lamp 1 connected in this way is supplied with AC power from a commercial AC power supply Vac, which is an example of the external power supply 9, and turns on the light source element of the light source device 25. In the present embodiment, the light source element uses a light emitting diode (hereinafter referred to as LED), but the present invention is not limited to this, and a light source element such as an organic EL or a laser diode can be used.

  The lighting device 27 includes a power interruption device 290, a DC power supply device 270, and a current limiting device 280.

  The power interruption device 290 stops (interrupts) the supply of AC power from the commercial AC power supply Vac to the DC power supply device 270 when any abnormality occurs in the DC power supply device 270 or the first light source circuit 250c of the light source device 25. It has a function. The power interruption device 290 is provided in a path connected to the second input line 611, but may be provided in a path connected to the first input line 610, or the first input line 610 and the second input. It may be provided on the line 611.

  The DC power supply device 270 converts AC power input from the commercial AC power supply Vac into first lighting power (hereinafter also referred to as DC power) supplied to the light source device 25. A first light source element (hereinafter also referred to as a first LED) 250 (described later) included in the light source device 25 is lit (emits light) when supplied with DC power converted by the DC power supply device 270.

  The DC power supply device 270 includes a filter circuit 271, a rectifier circuit 272, a smoothing circuit 273, a switching circuit 274, a DC power output circuit 275, and a control circuit 276. The DC power supply 270 is activated when AC power is input from the commercial AC power supply Vac, and performs a conversion operation for converting AC power into DC power. The direct current power in the present embodiment is power for supplying a direct current to the light source device 25.

  The filter circuit 271 is connected to the commercial AC power supply Vac by an input path 61 having a first input line 610 and a second input line 611. However, a power interruption device 290 is provided on either the first input line 610 or the second input line 611. The filter circuit 271 has a function of removing or suppressing a noise component that flows into or out of the illumination lamp 1 via the first input line 610 and the second input line 620. As a result, the DC power supply device 270 can be prevented from malfunctioning or being damaged by noise components.

  The rectifier circuit 272 is connected to the filter circuit 271 and the smoothing circuit 273. The rectifier circuit 272 rectifies AC power input from the commercial AC power supply Vac via the filter circuit 271 and outputs the AC power to a path connected to the smoothing circuit 273. The AC power is, for example, a single phase having a frequency of 50 [Hz] to 60 [Hz] and an effective voltage of 85 [V] to 265 [V].

  The smoothing circuit 273 is connected to the rectifier circuit 272 and the switching circuit 274. The smoothing circuit 273 smoothes the rectified power output from the rectifying circuit 272, generates a pulsating flow, and outputs the pulsating current to a path connected to the switching circuit 274.

  The switching circuit 274 is connected to the smoothing circuit 273, the DC power output circuit 275, and the control circuit 276. The switching circuit 274 is an example of a power conversion circuit. The switching circuit 274 constitutes a step-down DC-DC converter. The switching circuit 274 performs constant current control on the pulsating flow output from the smoothing circuit 273 based on a control command input from a control circuit 276 (described later), and passes through a path connected to the DC power output circuit 275. Output.

  The DC power output circuit 275 is connected to the switching circuit 274, the first light source circuit 250 c of the light source device 25, and the control circuit 276. The DC power output circuit 275 smoothes the pulsating flow that has been subjected to constant current control and is output from the switching circuit 274 and outputs the smoothed pulsating current to the path connected to the first light source circuit 250 c of the light source device 25. Then, the first lighting power is supplied from the first output path 63 to the first light source circuit (first LED circuit) 250c.

  The control circuit 276 is connected to the first output path 61 and the switching circuit 274 that connect the DC power output circuit 275 and the first light source circuit 250 c of the light source device 25. The control circuit 276 monitors the current supplied to the first light source circuit 250c (flows through the first light source circuit 250c) and, based on the monitoring result, supplies a constant current to the first light source circuit 250c. A control command is output to a path connected to the switching circuit 274.

The current limiting device 280 limits (reduces) the current of the AC power input from the commercial AC power supply Vac, and converts it into power supplied to the light source device 25. A second light source element (hereinafter also referred to as a second LED) 251 (to be described later) included in the light source device 25 is lit (emits light) when supplied with AC power whose current is limited by the current limiting device 280.
The second LED (251) constitutes a second light source circuit 251c.

The current limiting device 280 is connected to the input path 61 that connects the commercial AC power supply Vac and the DC power supply device 270 and the second light source circuit 251 c of the light source device 25. Here, the current limiting device 280 is connected to the input path 61 on the commercial AC power supply Vac side with respect to the power interruption device 290 connected to the first input line 610 and the second input line 611.
The AC power whose current is limited is supplied as the second lighting power from the second output path 64 to the second light source circuit (second LED circuit) 251c. The AC power in the present embodiment is power for supplying an AC current to the light source device 25.
The frequency of the AC power supplied to the second light source circuit 251c is equal to the frequency of the AC power supplied from the external power source (9).
Since power is limited by the power limiting device 280, the second lighting power supplied to the second light source circuit 251c is smaller than the first lighting power supplied to the first light source circuit 250c.

  The light source device 25 includes a first light source circuit (first LED circuit) 250c and a second light source circuit (second LED circuit) 251c. The first light source circuit (first LED circuit) 250c includes a first LED (250) that is a first light source element, and the second light source circuit (second LED circuit) 251c is a second LED (second light source element). 251). Here, the first LED (250) is a DC drive LED that lights (emits light) when supplied with DC power, and the second LED (251) is an AC drive that can be lit (emitted) even when AC power is supplied. LED. The light source device 25 is, for example, a module in which a first LED (250) and a second LED (251) are mounted on a light source substrate 254 (described later).

The lighting device 27 and the light source device 25 are connected by a first output path 63 (first output line 630, second output line 631) and a second output path 64 (third output line 640, fourth output line 641). ing.
In the DC power supply device 270 of the lighting device 27, the power converted from AC power into DC is input to the first light source circuit 250c of the light source device 25 via the first output path 63, and the first light source circuit 250c has. The first LED (250), which is a DC drive LED, is lit (emitted).
Then, in the current limiting device 280 of the lighting device 27, the electric power whose current is limited (reduced) while being alternating current is input to the second light source circuit 251c of the light source device 25 via the second output path 64, The second LED (251), which is an AC drive LED included in the second light source circuit 251c, is lit (emitted).

  As described above, the power supplied to the first light source circuit 250 c and the second light source circuit 251 c of the light source device 25 is separately generated in the lighting device 27 and supplied from different paths independent of the lighting device 27.

  FIG. 2 is a circuit diagram illustrating an example of the overall configuration of the illumination lamp according to the first embodiment.

(Power interruption device)
The power cut-off device 290 is, for example, a power cut-off circuit 291 using a fuse F1 that blows when an overcurrent flows. When an abnormality occurs in the DC power supply device 270 or the first light source circuit 250c of the light source device 25, if an overcurrent flows through the fuse F1, the fuse F1 is melted, and AC power to the DC power supply device 270 is supplied from the commercial AC power supply Vac. The supply path is opened. As a result, the supply of AC power from the commercial AC power supply Vac to the DC power supply device 270 is stopped (cut off).

  The power cut-off circuit 291 may be composed of electronic components and circuits other than the fuse F1. Further, although the power cutoff circuit 291 is provided in a path connected to the second input line 611, it may be provided in a path connected to the first input line 610, or may be provided in the first input line 610 and the first input line 610. Two input lines 611 may be provided.

(DC power supply)
The DC power supply device 270 has a function of converting AC power to DC power and supplying a stable DC current to the first light source circuit 250c of the light source device 25 including the first LED (250).
The DC power supply device 270 includes, for example, a filter circuit 271 composed of a resistor R1 and a capacitor C1, a rectifier circuit 272 composed of a bridge diode D1, a smoothing circuit 273 composed of a coil L1 and a capacitor C2, FET) Q1 as a switching element, a switching circuit 274, a DC power output circuit 275 comprising a diode D2, a coil L2, and a capacitor C3, a current detection resistor R4, a waveform generator 279, a comparator (comparator) 278, an amplifier 277, etc. And a control circuit 276 comprising:

The DC power supply device 270 performs the following operations.
When AC power is input to the DC power supply device 270 from the commercial AC power supply Vac that is the external power supply 9, a pulsating flow including a commercial AC ripple component is output from the smoothing circuit 273 via the filter circuit 271 and the rectifier circuit 272. Is done.

  When this pulsating flow is input to the switching circuit 274, the FET (Q1) of the switching circuit 274 performs step-down control on the pulsating flow based on the control command output from the control circuit 276, and supplies it to the first light source circuit 250c. DC power (constant current) is generated.

  The FET (Q1) of the switching circuit 274 performs a switching operation (ON / OFF repetitive operation) at a frequency higher than the commercial AC frequency, and generates DC power (constant current) proportional to the ON duty. The switching frequency of the FET (Q1) is a high frequency of several tens [kHz] or more. For example, a frequency corresponding to the design specification is selected in the range of 40 [kHz] to 150 [kHz].

  The FET (Q1) performs constant current control on the pulsating flow based on the control command output from the control circuit 276, and the constant current having a substantially constant magnitude corresponding to the control command to the first light source circuit 250c. Supply.

  The current detection resistor R4 of the control circuit 276 detects the ON current that flows between the drain (D) and the source (S) of the FET (Q1) when the FET (Q1) is in the ON state. The control circuit 276 performs integration processing of the ON current detected by the current detection resistor R4. The waveform generator 279 of the control circuit 276 generates, for example, a triangular wave signal and outputs it. The integrated ON current is input to the comparator 278 together with the triangular wave signal generated by the waveform generator 279.

  The comparator 278 outputs, for example, a pulse signal subjected to pulse width modulation (PWM) so that the ON duty changes based on the comparison result. The ON duty is a control command for the FET (Q1) of the switching circuit 274 to perform step-down control or constant current control, and a pulse signal that is pulse width modulated (PWM) so that the ON duty changes is a control command signal. is there. The ON duty can be changed in a range of, for example, 5% to 100%.

The FET (Q1) of the switching circuit 274 performs a switching operation (ON / OFF repetitive operation) when a pulse signal subjected to pulse width modulation (PWM) as a control command signal is input.
When the FET (Q1) is ON, a direct current flows through a path of “smoothing circuit 273 → first light source circuit 250c (first LED (250)) → coil L2 → FET (Q1) → current detection resistor R4”.
On the other hand, when the FET (Q1) is OFF, the coil L2 serves as a power supply source, and a direct current flows through a path of “coil L2 → diode D2 → first light source circuit 250c (first LED (250))”.
In this way, since a direct current flows continuously through the first light source circuit 250c (first LED (250)) regardless of the ON / OFF state of the FET (Q1), the first LED (250) is turned on ( (Emission) continues without interruption.

The control circuit 276 may change the ON duty, which is a control command, based on a comparison result between a preset target current value and an ON current flowing through the FET (Q1).
The control circuit 276 may be configured using a microcomputer or the like.
The control circuit 276 may change the ON duty, which is a control command, based on a calculation processing result using a microcomputer or the like.
Note that the ON duty may be changed by changing the switching frequency of the FET (Q1) to be constant, or may be changed in combination with frequency modulation (PFM) that changes the switching frequency of the FET (Q1). That is, either the ON time or the OFF time of the FET (Q1) may be fixed and the ON duty may be changed, or both the ON time and the OFF time of the FET (Q1) are not fixed and the ON duty is set. It may be changed.

DC power supply device 270 in the present embodiment constitutes a step-down DC-DC converter as a whole, but is not limited to this type.
Further, the filter circuit 271, the rectifier circuit 272, the smoothing circuit 273, the switching circuit 274, and the DC power output circuit 275 are not limited to the illustrated configurations, and may have other configurations according to the specifications of the illumination lamp 1.
A component such as a varistor may be arranged at the input end of the filter circuit 271 in order to protect the DC power supply device 270 from an overvoltage.

(Current limiting device)
Current limiting device 280 is configured to have a longer operating life than DC power supply device 270. For this reason, the current limiting device 280 is configured with fewer parts than the DC power supply device 270. The current limiting device 280 is configured such that the number of parts where the components are electrically connected by soldering or the like is smaller than that of the DC power supply device 270.

The current limiting device 280 includes, for example, a current limiting circuit 281 that includes a current limiting resistor R7 and a fuse F2. The current limiting circuit 281 is disposed on a path branching from both poles between the input path 61 and the power cutoff device 291 on the path connecting the external power supply 9 and the DC power supply device 270.
Specifically, the current limiting resistor R7 is disposed on a path connecting the second terminal Ts2 (286) and the third terminal Ts3 (288), and the fuse F2 includes the second terminal Ts2 (287) and the fourth terminal Ts4 ( 289). That is, the fuse F2 is arranged on the input path on the N pole side, and the current limiting resistor R7 is arranged on the input path on the L pole side.

The current limiting resistor R7 has a function of setting the alternating current supplied to the second light source circuit 251c to a predetermined value.
Specifically, when AC power is input from the commercial AC power supply Vac that is the external power supply 9 to the current limiting device 280, the power limiting resistor R7 is connected to the second LED (251) of the second light source circuit 251c of the light source device 25. An alternating current necessary for lighting (light emission) is generated and output.

Thus, the current limiting device 280, so configured by fewer parts than the DC power supply device 270, the failure probability of the theoretical current limiting device 280 can be kept to a low probability than the DC power supply 270 .

  For this reason, especially when only one lighting device (illumination lamp) is installed in the illumination target space, the DC power supply device 270 that has exceeded its operating life will fail, and the first light source circuit 250c will be damaged. Even if one LED (250) is not lit, the lighting state of the second LED (251) of the second light source circuit 251c that is supplied with AC power from the current limiting device 280 is maintained, so that it is completely within the illumination target space. The minimum visibility can be secured without the risk of losing visibility. In addition, since the illumination target space is not completely turned off, psychological anxiety can be reduced.

The second LED (251) can flow current of either positive or negative polarity. That is, it is an AC drive LED that can be lit (emitted) even when AC power is supplied. Therefore, the circuit for supplying power to the second LED (251) does not require a redundant configuration for converting AC power into DC power, and can be realized with a simple configuration that limits only the current. As a result, material costs can be reduced and manufacturing quality can be improved.
In the first embodiment, the second LED (251) is configured by connecting in parallel two LEDs in which currents flow in opposite directions. The number of LEDs constituting the second LED (251) is not limited to two, and may be three or more as long as currents flow in opposite directions.

  Further, since the number of the second LED (251) can be smaller than that of the first LED (250) for the purpose, the rating required for the current limiting resistor R7 when the number of the second LED (251) is reduced accordingly. The value is relaxed and the material cost can be further suppressed.

The fuse F2 is an overcurrent protection element. When an abnormal current flows, the fuse F2 can detect this and stop the current supplied to the second light source circuit 251c.
Specifically, if any abnormality occurs in the current limiting device 280 or the second light source circuit 251c of the light source device 25 and an abnormal current (overcurrent) flows in the fuse F2, the fuse F2 is blown and the current is limited from the commercial AC power supply Vac. The supply path of AC power to the device 280 is opened. Thereby, the supply of AC power from the commercial AC power supply Vac to the current limiting device 280 and the second light source circuit 251c is stopped (cut off).
As a result, even if an abnormal current flows through the second light source circuit 251c, the supply of current can be stopped immediately, so that the lighting fixture 7 (described later) to which the illumination lamp 1 is attached and the lighting fixture 7 can be powered. It is possible to protect facilities that supply

  Note that the lighting device 270 in the present embodiment may appropriately include components such as a power factor correction circuit and an overvoltage protection circuit that are not shown in FIGS.

(Light source device)
The light source device 25 includes a first light source circuit (first LED circuit) 250c and a second light source circuit (second LED circuit) 251c. The first light source circuit (first LED circuit) 250c includes a first LED (250) that is a first light source element, and the second light source circuit (second LED circuit) 251c is a second LED (second light source element). 251). The first LED (250) is a DC drive LED that lights (emits light) when DC power is supplied, and the second LED (251) is an AC drive that can be AC driven to light (emit light) even when AC power is supplied. LED.

  In the present embodiment, in the light source device 25, 12 first LEDs (250) and one second LED (251) are mounted on one light source substrate 254 (see FIG. 6 and the like) The number of the light source substrate 254, the first LED (250), and the second LED (251) is not limited to this. Moreover, the connection method in the case of using a light source circuit using a plurality of LEDs may be any of serial connection, parallel connection, and series-parallel connection combining these.

(Modification of current limiting device)
A modification of the current limiting device in the present embodiment will be described.
FIG. 3 is a diagram illustrating a modification of the current limiting device for the illumination lamp according to the first embodiment.
FIG. 3A is a circuit diagram of a current limiting device 280a that is a first modification of the first embodiment. The current limiting device 280a includes a current limiting circuit 281a including a fuse F2 and a current limiting resistor R7. Similarly to the first embodiment, the current limiting circuit 281a is disposed on a path branching from both poles between the input path 61 and the power cut-off device 291 on the path connecting the external power supply 9 and the DC power supply apparatus 270. The The fuse F2 is disposed on the path connecting the first terminal Ts1 (286) and the third terminal Ts3 (288), and the current limiting resistor R7 is the second terminal Ts2 (287) and the fourth terminal Ts4 (289). ) Is different from that in the first embodiment. That is, in the current limiting device 280a (current limiting circuit 281a) which is the first modification, the fuse F2 is disposed on the input path on the L pole side, and the current limiting resistor R7 is disposed on the input path on the N pole side.

FIG. 3B is a circuit diagram of a current limiting device 280b that is a second modification of the first embodiment. The current limiting device 280b includes a current limiting circuit 281b including a fuse F2 and a current limiting variable resistor VR1. The current limiting variable resistor VR1 replaces the current limiting resistor R7 in the first embodiment, and can adjust the current supplied to the second light source circuit 251c without replacing components (resistors). . That is, when the current supplied to the second light source circuit 251c differs depending on the product specification, it is possible to set the current according to various product specifications only by adjusting the current limiting variable resistor VR1.
The fuse F2 is disposed on a path connecting the first terminal Ts1 (286) and the third terminal Ts3 (288), and the current limiting variable resistor VR1 is the second terminal Ts2 (287) and the fourth terminal Ts4 (289). May be arranged on a path connecting the two.

FIG. 3C is a circuit diagram of a current limiting device 280c which is a third modification of the first embodiment. The current limiting device 280c includes a current limiting circuit 281c including a fuse F2 and a current limiting resistor R7. The current limiting circuit 281c is disposed on a path connecting the first terminal Ts1 (286) and the third terminal Ts3 (288), in which the fuse F2 and the current limiting resistor R7 are connected in series. The difference from Embodiment 1 is that the two terminals Ts2 (287) and the fourth terminal Ts4 (289) are directly connected.
In the current limiting circuit 281c illustrated in FIG. 3C, the fuse F2 is disposed on the first terminal Ts1 (286) side, and the current limiting resistor R7 is disposed on the third terminal Ts3 (288) side. The fuse F2 may be disposed on the first terminal Ts3 (288) side, and the current limiting resistor R7 may be disposed on the third terminal Ts3 (288) side.
The current limiting circuit 281c may be disposed on a path connecting the second terminal Ts2 (287) and the fourth terminal Ts4 (289).

FIG. 3D is a circuit diagram of a current limiting device 280d which is a fourth modification of the first embodiment. The current limiting device 280d includes a current limiting circuit 281d including a thermal fuse TH1 and a current limiting resistor R7. The thermal fuse TH1 replaces the fuse F2 in the second modification of the first embodiment, detects an abnormal temperature rise when an abnormal current flows, and is supplied to the second light source circuit 251c. Current can be stopped. That is, even if an abnormal current flows through the second light source circuit 251c, the supply of current can be stopped immediately, so that power is supplied to the lighting fixture 7 (described later) to which the lighting lamp 1 is attached, and the lighting fixture 7. Equipment to be supplied can be protected.
In the current limiting circuit 281d illustrated in FIG. 3D, the thermal fuse TH1 is disposed on the first terminal Ts1 (286) side, and the current limiting resistor R7 is disposed on the third terminal Ts3 (288) side. However, the thermal fuse TH1 may be disposed on the first terminal Ts3 (288) side, and the current limiting resistor R7 may be disposed on the third terminal Ts3 (288) side.
The current limiting circuit 281d may be disposed on a path connecting the second terminal Ts2 (287) and the fourth terminal Ts4 (289).

  In the first to fourth modifications of the first embodiment and the first embodiment, the overcurrent protection elements such as the fuse F2 and the thermal fuse TH included in the current limiting device are not limited to those illustrated. These overcurrent protection elements may be self-resettable resettable elements.

FIG. 3E is a circuit diagram of a current limiting device 280e that is a fifth modification of the first embodiment. The current limiting device 280d includes a current limiting circuit 281e that includes only the current limiting resistor R7.
In the case where there is means capable of stopping the current supplied to the second light source circuit 251c when an abnormal current flows through the second light source circuit 251c, means for stopping the current like the current limiting device 280e. It is good also as a structure which is not provided. Thereby, the illumination lamp 1 has the effects of cost reduction and size reduction.

(Operation of lighting lamp)
FIG. 4 is a timing chart for explaining the operation of the illumination lamp according to the first embodiment. FIG. 4A is a diagram schematically showing the operating state of the DC power supply device during a period near the design life of the illumination lamp 1. FIG. 4B is a diagram schematically illustrating a supply pattern of the first lighting power and the second lighting power during a period in which the DC power supply device is operating normally. FIG. 4C is a diagram schematically illustrating a supply pattern of the first lighting power and the second lighting power during a period in which the DC power supply device does not operate normally (operation failure).

In general, an illumination lamp has a design operation life, and as shown in FIG. 4A, the DC power supply device 270 of the illumination lamp 1 operates normally in a period not exceeding the design life. On the other hand, there is a possibility that the DC power supply device 270 of the illumination lamp 1 does not operate normally during a period exceeding the design life.
Here, the state where the DC power supply device 270 does not operate normally is a state where the DC power as the first lighting power cannot be normally supplied to the first light source circuit (first LED circuit) 250c of the light source device 25. The typical example is that the first light source circuit (first LED circuit) 250c is not supplied with the direct current power, which is the first lighting power, to the first light source circuit (first LED circuit) 250c. 250) is not lit (emitted).

  As shown in FIG. 4B, supply of commercial power Vac to the illumination lamp 1 from the outside is started using a wall switch (not shown) or the like during a period in which the DC power supply device 270 of the illumination lamp 1 operates normally. Then (time T1, T3), DC power supply 270 normally generates and outputs DC power that is the first lighting power. And the 1st LED (250) of the 1st light source circuit (1st LED circuit) 250c which received supply of direct-current power which is the 1st lighting power lights up normally (light-emission). Further, the current limiting device 280 normally generates and outputs AC power that is the second lighting power. And the 2nd LED (251) of the 2nd light source circuit (2nd LED circuit) 251c which received supply of alternating current power which is the 2nd lighting power lights up normally (light-emission). The normal lighting (light emission) of the first LED (250) and the second LED (251) continues using a wall switch (not shown) or the like until the supply of the commercial power Vac to the illumination lamp 1 from the outside is stopped.

When the supply of commercial power Vac to the illumination lamp 1 from the outside is stopped using a wall switch (not shown) or the like during a period in which the DC power supply device 270 of the illumination lamp 1 operates normally (time T2), the DC power supply device 270 stops (normally) the operation, and the output of the DC power that is the first lighting power stops. And the 1st LED (250) of the 1st light source circuit (1st LED circuit) 250c which does not receive supply of direct-current power which is the 1st lighting power is normally extinguished. Moreover, the current limiting device 280 stops (normally) the operation, and the output of the AC power that is the second lighting power stops. And the 2nd LED (251) of the 2nd light source circuit (2nd LED circuit) 251c which does not receive supply of the alternating current power which is the 2nd lighting power goes out normally.

  As shown in FIG. 4C, supply of commercial power Vac to the illumination lamp 1 from the outside is started using a wall switch (not shown) or the like during a period when the DC power supply device 270 of the illumination lamp 1 does not operate normally. Then (time T4, T6), the DC power supply device 270 cannot generate or output the DC power that is the first lighting power. The first LED (250) of the first light source circuit (first LED circuit) 250c that is not supplied with DC power as the first lighting power although the commercial power Vac is supplied to the illumination lamp 1 from the outside. Remains off. At this time, the current limiting device 280 normally generates and outputs AC power that is the second lighting power. And the 2nd LED (251) of the 2nd light source circuit (2nd LED circuit) 251c which received supply of the alternating current power which is the 2nd lighting power lights up normally (light-emission). That is, only the second LED (251) continues normal lighting (light emission) until the supply of the commercial power Vac to the illumination lamp 1 from the outside is stopped using a wall switch (not shown) or the like.

  When the supply of commercial power Vac to the illumination lamp 1 from the outside is stopped using a wall switch (not shown) or the like during a period in which the DC power supply device 270 of the illumination lamp 1 does not operate normally (time T5), the DC power supply device The operation 270 continues to stop, and the output of DC power that is the first lighting power also stops. And the 1st LED (250) of the 1st light source circuit (1st LED circuit) 250c which does not receive supply of direct-current power which is the 1st lighting power continues to turn off. Moreover, the current limiting device 280 stops (normally) the operation, and the output of the AC power that is the second lighting power stops. And the 2nd LED (251) of the 2nd light source circuit (2nd LED circuit) 251c which does not receive supply of the alternating current power which is the 2nd lighting power goes out normally.

  In this way, in the illumination lamp 1, the power supplied to the first light source circuit 250 c and the second light source circuit 251 c of the light source device 25 is generated separately in the lighting device 27, and from separate paths independent of the lighting device 27. Since the power is supplied, it is possible to reliably notify the abnormal state of the lighting device 27 in which the DC power supply device 270 does not operate normally during the period in which the DC power supply device 270 does not operate normally.

(Lighting lamp structure)
FIG. 5 is an external view of the illumination lamp 1 according to the first embodiment.
As shown in FIG. 5, the illumination lamp 1 includes a cover 5, a metal housing 2, a resin housing 3, and a base 4. The illumination lamp 1 is, for example, a light bulb shaped LED lamp.

  The cover 5 is an example of a cover that covers the light source. The metal housing 2 is an example of a housing in which a light source device 25 having a light source element mounted on a light source substrate is attached to an upper end portion and at least a part of the resin housing 3 is accommodated. The metal housing 2 also serves as a heat radiating member. The resin housing 3 is an example of a housing (housing member) that houses the lighting device 27 that turns on the light source. Details of the cover 5, the metal housing 2, and the resin housing 3 will be described later.

  The base 4 is attached to the lower end of the resin casing 3. The base 4 is, for example, electrically connected to an external commercial power source and electrically connected to the lighting device 27 housed in the resin casing 3 to supply power to the lighting device 27.

FIG. 6 is a perspective view of the light source device and the metal casing of the illumination lamp according to the first embodiment.
As shown in FIG. 6, a light source substrate (LED substrate) 254 is attached to the metal housing 2. The light source substrate 254 is fastened to the resin casing 3 (described later) housed in the cavity 227 of the metal casing 2 using the board fastening screw 26. On the light source substrate 254, a first LED (250) as a first light source element and a second LED (251) as a second light source element are mounted.
Here, the first LED (250) is a DC drive LED that lights (emits light) when supplied with DC power. The second LED (251) is an AC drive LED that can be lit (emitted) even when AC power is supplied.

The light source device 25 is an example of a configuration in which the first LED (250) as the first light source element and the second LED (251) as the second light source element are mounted on the light source substrate 254, and is replaced with a light source element other than the light emitting diode. The first light source element and the second light source element thus formed may be mounted on the light source substrate 254. As a light source element other than the light emitting diode, for example, a light source element such as a laser diode or an organic EL can be used.
Although FIG. 6 illustrates the first LED (250) and the second LED (251) as surface mount type package parts, they are not limited to this.

  In order to increase the adhesion between the light source substrate 254 and the metal casing 2 and efficiently transfer the operation heat of the first LED (250), the second LED (251), etc. to the metal casing 2, the light source substrate 254 and the metal casing 2 A thermally conductive resin may be applied between the housing 2 and the housing 2. Furthermore, in order to increase the adhesive strength between the light source substrate 254 and the metal housing 2, the light source substrate 254 and the metal housing 2 may be bonded and fixed using an adhesive member.

A first output line 630, a second output line 631, a third output line 640, and a fourth output line 641 are soldered to the light source substrate 254. The first output line 630 and the second output line 631 are electric wires that electrically connect the lighting device 27 and the light source device 25 housed in the resin casing 3.
Specifically, the first output line 630 and the second output line 631 are a first output path for supplying DC power generated by the DC power supply device 270 included in the lighting device 27 to the first LED (250) of the first light source circuit. 63. The third output line 640 and the fourth output line 641 are a second output path for supplying AC power generated by the current limiting device 280 included in the lighting device 27 to the second LED (251) of the second light source circuit 251c. 64.
The first output line 630, the second output line 631, the third output line 640, and the fourth output line 641 may be electrically connected by a connection method other than soldering.
Further, the first output path 63 and the second output path 64 may perform electrical connection between the lighting device 27 and the light source device 25 using components other than electric wires.

FIG. 7 is a perspective view of the light source device of the illumination lamp according to the first embodiment.
As shown in FIG. 7, the light source substrate 254 constituting the light source device 25 is a disk-shaped substrate. Near the center of the circular plate surface (mounting surface of the first LED (250) and the second LED (251)) of the light source substrate 254, a second substrate hole 253 through which an electric wire or the like electrically connected to the lighting device 27 is passed. Two first substrate holes 252 are formed near the periphery of the circular plate surface of the light source substrate 254 so as to be aligned in the radial direction of the circular plate surface of the light source substrate 254 with the second substrate hole 253 interposed therebetween. The two first substrate holes 252 are formed so as to overlap with screw insertion holes 201 (described later) of the metal housing 2, and the second substrate holes 253 are connected to electric wire insertion holes 200 (described later) of the metal housing 2. It is formed to overlap.

Twelve first LEDs (250) are mounted near the periphery of the light source substrate 254. Six first LEDs (250) are arranged on both sides of a straight line (diameter) connecting the two first substrate holes 252. In the center of the circular plate surface of the light source substrate 254, one second LED (251) is further mounted.
As described above, when the first LED (250) is mounted so as to surround the second LED (251), when the illumination lamp 1 is normally lit, the second LED (251) that is an AC drive LED emits light. By doing so, the influence of flicker and the like can be mitigated. And when the illumination lamp 1 does not light normally, only the 2nd LED (251) which is AC drive LED light-emits, and it is excellent in the visibility of an abnormal state.

As for the number of the first LEDs (250) and the number of the second LEDs (251), the light amount (light flux value) due to lighting (light emission) of all the first LEDs (250) mounted on the light source substrate 254 is mounted on the light source substrate 254. It is determined to be equal to or greater than the light amount (light flux value) due to lighting (light emission) of all the second LEDs (251).
Preferably, the number of the first LEDs (250) and the number of the second LEDs (251) are such that the light quantity (light flux value) of the second LED (251) is 5 to 5 with respect to the light quantity (light flux value) of the first LED (250). It is determined to be 10 [%].

In the present embodiment, the number of first LEDs (250) mounted on the light source substrate 254 is twelve, and the number of second LEDs (251) is one. Assuming that the light quantity (light flux value) of the first LED (250) and the second LED (251) per one is the same, the light quantity (light flux value) of the second LED (251).
Corresponds to about 8.3 [%] of the light amount (light flux value) of the first LED (250).

  More preferably, the number of the first LEDs (250) and the number of the second LEDs (251) are such as flicker due to light emission of the second LED (251) which is an AC drive LED when the illumination lamp 1 is normally lit. It is determined in consideration of the balance between the influence and the visibility of the abnormal state of the lighting device 27 by the light emission of only the second LED (251) which is an AC drive LED when the illumination lamp 1 does not light normally.

However, the present invention is not limited to this, and the shape of the light source substrate 254, the arrangement and number of the first LEDs (250) and the second LEDs (251), and the like can be changed as appropriate.
In addition, an aluminum base substrate is used for the light source substrate 254 in order to efficiently transmit the operating heat of the first LED (250) and the second LED (251) to the metal housing 2, but in addition to this, a glass substrate, a glass substrate An epoxy substrate, a paper phenol substrate, a composite substrate, or the like can be used.

FIG. 8 is a perspective view of a metal housing of the illumination lamp according to Embodiment 1. FIG.
As shown in FIG. 8, the metal housing 2 includes a light source attachment portion 20, fins 22, and a main body portion 24. The metal housing 2 is formed of, for example, a metal having good thermal conductivity such as aluminum or a material containing a metal. Note that a material other than metal may be used as long as the material has good thermal conductivity. The metal housing 2 is integrally formed by, for example, a die cutting method or the like.

  The main body 24 has a truncated cone shape having a larger area on the upper surface side than on the lower surface side. The main body 24 is not limited to a truncated cone shape, and may be a cylindrical shape, an elliptical column shape, a prismatic shape, or the like.

  The light source mounting portion 20 is provided on the upper surface (one end surface) side of the main body portion 24. The light source board 254 of the light source device 25 is attached to the light source attachment portion 20. The light source mounting portion 20 has a circular light source mounting surface 202 that contacts the light source substrate 254. The light source substrate 254 is attached to the light source attachment surface 202 so that the back surface of the mounting surface on which the first LED (250) and the second LED (251) are mounted is in contact with the light source attachment surface 202.

  An electric wire insertion hole 200 through which an electric wire or the like electrically connected to the lighting device 27 is passed is formed at the center of the light source mounting surface 202. Two screw insertion holes 201 are formed near the periphery of the circular plate surface of the light source attachment surface 202 so as to be aligned in the radial direction of the circular light source attachment surface 202 with the electric wire insertion hole 200 interposed therebetween. The two screw insertion holes 201 are formed so as to overlap with the two first substrate holes 252 of the light source substrate 254, and the electric wire insertion hole 200 is formed so as to overlap with the second substrate hole 253 of the light source substrate 254. Yes. The electric wire insertion hole 200 and the two screw insertion holes 201 communicate with a cavity 227 described later. The light source mounting surface 202 is not limited to a circle but may be a rectangle or an ellipse.

The light source substrate 254 is inserted into two first substrate holes 252 of the light source substrate 254 and two screw insertion holes 201 (described later) of the metal housing 2 and screwed into two boss portions 31 (described later) of the resin housing 3. Are fixed to the light source mounting surface 202 by two board fastening screws 26.
Note that a resin having thermal conductivity or strong adhesive performance may be applied between the light source mounting surface 202 and the back surface of the light source substrate 254.

  An annular mounting groove 21 for mounting the cover 5 is formed around the light source mounting portion 20. The mounting groove 21 is formed by an inner peripheral groove inner peripheral wall 213, an outer peripheral groove outer peripheral wall 210, and a groove bottom portion 212 between the inner peripheral groove wall 213 and the outer peripheral groove wall 210. An annular engagement recess 211 is formed along the groove outer peripheral wall 210 in the vicinity of the upper end edge of the groove outer peripheral wall 210.

  A plurality of fins 22 are erected from the side surface of the metal housing 2. The fins 22 are integrally formed with the main body part 24 so as to protrude (radially) outward in the radial direction of the main body part 24. For example, 20 fins 22 are provided at equal intervals. The fin 22 efficiently dissipates heat of the light source substrate 254 attached to the light source attachment portion 20 (operational heat generated by the first LED (250), the second LED (251), etc. mounted on the light source substrate 254), and the first LED (250) The performance and quality deterioration due to temperature rise of parts such as the second LED (251) are suppressed. In addition, arrangement | positioning, the number of sheets, etc. of the fin 22 can be changed suitably.

  The fin 22 has a curved surface 220 and a continuous surface 221 from the upper surface (one end surface) side of the main body portion 24 toward the lower surface (the other end surface) side of the main body portion 24. The curved surface 220 is curved in a convex shape outside the main body portion 24. The continuous surface 221 is continuous with the curved surface 220 and is lower than the maximum height of the curved surface 220. Thus, in the present embodiment, since the maximum height of the fin 22 is the maximum height of the curved surface 220 convex to the outside of the main body portion 24, the illumination lamp 1 emits obliquely downward from the cover 5. Most of the emitted light is irradiated to the outside without being blocked by the fins 22. Therefore, in the illumination lamp 1, a wide light distribution angle is obtained regardless of whether the illumination lamp 1 is normally lit or not properly lit (only the second LED (251) is lit). be able to.

  The fin 22 has a wing shape, the curved surface 220 is a belt-like curved surface, the continuous surface 221 is a surface where a belt-like curved surface and a belt-like inclined plane are connected, and both side surfaces are from the side of the main body 24 to the outside of the main body 24. It is a flat surface that extends toward it. The side surface of the fin 22 has a substantially “D” shape in outline. Note that the continuous surface 221 may not include a curved surface, and conversely, the entire surface may be a curved surface. Moreover, the continuous surface 221 may include a plane (vertical plane) that is not inclined.

  The curved surface 220 of the fin 22 is curved so as to gradually increase from the upper end edge of the side surface of the main body portion 24 and extends downward, and is connected to the continuous surface 221 at the maximum height. In the present embodiment, since the fins 22 are provided from the upper end of the main body portion 24, heat dissipation is improved. The curved surface 220 may be formed from a position below the upper end edge of the side surface of the main body 24. That is, the fin 22 may be provided from a position below the upper end of the main body 24.

  The continuous surface 221 of the fin 22 is connected to the maximum height portion of the curved surface 220, is inclined so as to be gradually lowered, and extends to a position above the lower end edge of the side surface of the main body portion 24. In the present embodiment, the height of the fins 22 gradually decreases downward, so that the illumination lamp 1 can be attached to a luminaire having a narrow opening for inserting the illumination lamp 1. That is, a high instrument fit rate can be achieved. Moreover, since the fin 22 is provided only to the position above the lower end of the main body part 24, the instrument compatibility rate is further increased. The continuous surface 221 may be formed up to the lower end edge of the side surface of the main body 24. That is, the fin 22 may be provided up to the lower end of the main body 24.

  The distance between the fins 22 is equal at any position. That is, the side surfaces of the adjacent fins 22 are parallel to each other. The distance between the fins 22 may be gradually shortened from the upper surface side of the main body portion 24 toward the lower surface side of the main body portion 24.

  The portion sandwiched between the adjacent fins 22 of the main body portion 24 protrudes to the outermost side at the same position as the maximum height portion of the curved surface 220 of the adjacent fin 22. For example, the side surface of the main body 24 is vertical (or gradually increases) from the upper end edge to the maximum height portion, and gradually decreases from the maximum height portion to the lower end edge. That is, the side surface of the main body 24 has a “<” shape. Accordingly, for example, when the metal casing 2 is molded with a mold, the upper mold and the lower mold are separated at a position corresponding to the maximum height portion. Because it becomes easy to take out from the production, production efficiency and manufacturing quality is improved.

  A cylindrical cavity 227 for storing a part of the resin casing 3 is formed inside the metal casing 2. Two fitting grooves (not shown) and one guide groove (not shown) extending along the axial direction of the cavity 227 are formed on the peripheral wall of the cavity 227 (the inner wall of the metal housing 2). The two fitting grooves correspond to the two screw insertion holes 202 of the light source mounting portion 20 on a one-to-one basis. The inner diameter of each fitting groove matches the inner diameter of the corresponding screw insertion hole 202, and each fitting groove continues to the corresponding screw insertion hole 202 and extends to the lower end of the metal housing 2. Therefore, the two fitting grooves are at positions facing each other along the radial direction of the cavity 227. That is, when one of the two fitting grooves is at a position of 0 degrees with respect to the center of the circular bottom wall of the cavity 227, the other fitting groove is a circular bottom wall of the cavity 227. It is at a position of 180 degrees relative to the center. At this time, the guide groove is at a position of 90 degrees with respect to the center of the circular bottom wall of the cavity 227. The guide groove extends from a position below the upper edge of the peripheral wall of the cavity 227 to the lower end of the metal housing 2.

  In the present embodiment, the light source attachment portion 20 serves as a partition wall that separates the light source substrate 254 attached to the light source attachment portion 20 and the resin housing 3 that is partially housed in the cavity 227.

FIG. 9 is a perspective view of the cover of the illumination lamp according to the first embodiment.
As shown in FIG. 9, the cover 5 includes a light transmission part (light transmission part) 51, a mounting cylinder part 52, an engagement convex part 53, and a fixing part 54.

  The light transmission part 51 is formed of a transparent or translucent material. As the transparent or translucent material, a resin material, glass, a material obtained by mixing them, or the like can be used. For example, polycarbonate or acrylic can be used as the resin material. The light transmitting portion 51 is formed by molding a resin having a predetermined plate thickness into a spherical shape. Specifically, the light transmitting portion 51 has a shape in which a part of a sphere having a hollow 227 is missing.

  The light transmission unit 51 transmits light emitted from the first LED (250) and the second LED (251) mounted on the light source substrate 254 from the inside to the outside. The light transmission part 51 may have a function of diffusing light emitted from the first LED (250) and the second LED (251) mounted on the light source substrate 254. The shape of the light transmission part 51 is not limited to a spherical shape, and may be a hemispherical shape, a long spherical shape, a rectangular parallelepiped shape, a dome shape, or the like.

  The attachment cylinder portion 52 is formed integrally with the light transmission portion 51. The attachment cylinder part 52 may be formed using the same material as the light transmission part 51, or may be formed using a material different from the light transmission part 51 by using a method such as two-color molding. The mounting cylinder portion 52 is formed by molding a resin having a predetermined plate thickness into a cylindrical shape. That is, the attachment cylinder part 52 is formed so that the part where the sphere of the light transmission part 51 lacks protrudes in a cylindrical shape.

  A predetermined number of the engaging convex portions 53 are formed so as to protrude from the outer peripheral surface of the mounting cylinder portion 52.

  The fixed portion 54 is formed so as to protrude outward from the lower end portion of the mounting cylinder portion 52 in a bowl shape.

  The attachment cylinder portion 52 is inserted into the attachment groove 21 of the metal housing 2. When the attachment tube portion 52 is inserted into the attachment groove 21, the engagement convex portion 53 engages with the engagement concave portion 211 formed in the attachment groove 21. The fixing portion 54 is fixed in the vicinity of the groove bottom 212 that is the bottom of the mounting groove 21. In this way, the cover 5 is fixed to the metal housing 2.

FIG. 10 is a perspective view of a resin casing of the illumination lamp according to the first embodiment.
The resin housing 3 includes a main body portion 30, a boss portion 31, a flange portion 32, a screw portion 33, and a lid portion 35. The main body portion 30, the boss portion 31, the flange portion 32, and the screw portion 33 are integrally formed using a resin material such as polyethylene terephthalate, for example. The lid portion 35 is formed using, for example, the same resin material as that of the main body portion 30 and the like, and is attached to the upper end portion of the main body portion 30. The resin casing 3 may be configured not to use the lid portion 35.

  The main body 30 is substantially cylindrical. An electronic component such as a lighting device 27 that generates and outputs electric power for lighting (emitting) the first LED (250) and the second LED (251) mounted on the light source board 254 is housed in the main body 30. Is done. A rectangular insertion guide 300 is provided on the side wall (outer peripheral wall) of the main body 30. The insertion guide 300 extends along the axial direction of the main body 30 from a position below the upper end of the main body 30 to a position above the lower end of the main body 30. Four fitting guides 301 are provided at equal intervals on the upper end of the main body 30. Each fitting guide 301 has a cylindrical shape and projects upward from the annular upper end surface of the main body 30.

  The boss part 31 is substantially cylindrical and is provided on the side wall of the main body part 30. The two boss portions 31 are provided at equal intervals. That is, the two boss portions 31 are provided at positions separated by 180 degrees in the circumferential direction of the main body portion 30. Note that the two boss portions 31 may be provided at positions separated by an angle other than 180 degrees. The number of boss portions 31 is not limited to two, and may be one or three or more.

  The boss 31 is formed with a hole 312 for inserting the board fastening screw 26 described above along the axial direction of the main body 30. The board fastening screws 26 are examples of fastening members, and other types of fastening members such as press-fit bolts may be used instead.

  The outer part 310 that is a part of the side wall of the boss part 31 is located outside the side wall of the main body part 30. That is, the outermost part of the side wall of the boss part 31 (outermost part of the boss part 31) is located outside the outermost part of the side wall of the main body part 30 (outermost part of the main body part 30). Here, the thickness of the boss portion 31 is formed so as to be able to form the hole 312 for inserting the board fastening screw 26. For this reason, there exists a possibility that the space which accommodates the lighting device 27 etc. inside the main-body part 30 may become narrow by having the boss | hub part 31. FIG. However, in the present embodiment, since the boss portion 31 is formed so as to be shifted to the outside of the main body portion 30, the space inside the main body portion 30 is widened. That is, according to the present embodiment, since a wide space can be secured inside the resin casing 3, the degree of freedom in designing the lighting device 27 and the like accommodated is improved.

  The inner part 311 which is a part of the side wall (opposite to the outer part 310) of the boss part 31 is located inside the side wall of the main body part 30. That is, the innermost part (the innermost part of the boss part 31) of the side wall of the boss part 31 is positioned inside the innermost part (the innermost part of the main body part 30) of the side wall of the main body part 30. As described above, in the present embodiment, the two boss portions 31 are formed so as to protrude from the inside of the main body portion 30, so that the portion protruding inward (the inner portion 311) Can be used for positioning the lighting device 27 and the like.

  In the present embodiment, the main body 30 is not limited to a substantially cylindrical shape as long as it has a cylindrical shape, and may have another shape. What is necessary is just to change suitably the shape of the cavity 227 of the metal housing | casing 2 according to the shape of the main-body part 30. FIG.

  As long as the hole 312 for inserting the board fastening screw 26 is formed, the boss portion 31 is not limited to a substantially cylindrical shape, and may have another shape. What is necessary is just to change suitably the shape of the electric wire penetration hole 201 of the light source attachment part 200 according to the shape of the boss | hub part 31. FIG.

  The boss 31 may not protrude from the upper end surface of the main body 30. That is, the boss part 31 does not have to penetrate the electric wire insertion hole 201 of the light source attachment part 200. In this case, the board fastening screw 26 is inserted into the hole 312 of the boss portion 31 through the wire insertion hole 201 of the light source mounting portion 200.

  In the side wall of the boss part 31, the part (inner part 311) located inside the side wall of the main body part 30 may be omitted. For example, the innermost part of the boss part 31 may be at the same position as the innermost part of the main body part 30. In this case, since the boss part 31 does not protrude to the inside of the main body part 30, an even wider space can be secured inside the resin housing 3.

  The flange portion 32 is formed so as to protrude outward from the lower end portion of the main body portion 30 in a hook shape. The outer diameter of the collar portion 32 is formed larger than the inner diameter of the lower end portion of the metal housing 2. In order to improve the design, it is desirable that the outer diameter of the collar portion 32 is the same as the outer diameter of the lower end portion of the metal housing 2. In the present embodiment, the boss portion 31 is provided inside the flange portion 32, but may be provided outside the flange portion 32.

  When the resin housing 3 is attached to the metal housing 2, the flange portion 32 comes into contact with the lower end of the metal housing 2, and the resin housing 3 is more than necessary in the cavity 227 of the metal housing 2. It is prevented from being inserted in the back of the.

  The screw portion 33 is formed below the flange portion 32. The base 4 is screwed into the screw portion 33.

FIG. 11 is a perspective view of the lid portion of the illumination lamp according to the first embodiment.
The lid 35 is fitted to the main body 30 so as to cover the opening above the main body 30. The lid portion 35 is formed with a line tube portion 350, two fitting recesses 351, and four fitting hole portions 352. The through tube portion 350 has a cylindrical shape and is formed with a hole through which an electric wire that electrically connects the lighting device 27 and the light source device 25 housed in the main body portion 30 is passed. In a state in which the resin housing 3 is mounted on the metal housing 2, the wire tube portion 350 passes through the electric wire insertion hole 200 of the light source mounting portion 202 of the metal housing 2. The two fitting recesses 351 are notches that match the position and cross-sectional shape (thickness) of the two boss portions 31, and are fitted to the two boss portions 31. The four fitting hole portions 352 are through holes that match the positions and cross-sectional shapes (thicknesses) of the four fitting guides 301 of the main body portion 30 and are fitted with the four fitting guides 301. The four fitting hole portions 352 may be holes that do not penetrate as long as the four fitting hole portions 352 are matched with the positions and lengths of the four fitting guides 301 of the main body portion 30.

  The lid portion 35 may be integrally formed with the main body portion 30. Further, the resin casing 3 may not have the lid portion 35.

  As described above, the illumination lamp 1 according to the present embodiment can safely and reliably notify the abnormal state of the lighting device that turns on the light source without causing discomfort or anxiety, with a small and simple configuration. it can.

Embodiment 2. FIG.
In the second embodiment, the description will mainly focus on parts different from the first embodiment, and the description of the parts common to the first embodiment will be omitted.
FIG. 12 is a block diagram of an illumination lamp according to the second embodiment.
As shown in FIG. 12, the illumination lamp 1a has a lighting device 27a different from the first embodiment. The lighting device 27a is different from the lighting device 27 in the first embodiment in that a simple rectifier 294 is disposed on the output-side path of the current limiting device 280.

FIG. 13 is a circuit diagram of an illumination lamp according to the second embodiment.
The simple rectifier 294 includes a simple rectifier circuit 295 including a rectifier diode D5 and a smoothing capacitor C4. The simple rectifier circuit 295 is disposed on a path connecting the current limiting circuit 281 and the second output path 64.
Specifically, the rectifier diode D5 has an anode on the first terminal Tr1 (296) side and a cathode on the third terminal Tr3 (298) on a path connecting the first terminal Tr1 (296) and the third terminal Tr3 (298). The smoothing capacitor C4 is arranged with both terminals connected between the third terminal Tr3 (298) and the fourth terminal Tr4 (299).

  In the second LED (251) of the light source device 25, the AC power input from the commercial AC power supply Vac is limited (reduced) by the current limiting device 280, and the AC power limited by the current is limited by the simple rectifier 294. Lights up (emits light) in response to the supply of simply generated direct current (pulsating flow) power.

  The rectifier diode D5 of the simple rectifier circuit 295 performs half-wave rectification of the AC power output from the current limit circuit 281 whose current is limited by the current limit circuit 281. Then, the smoothing capacitor C4 of the simple rectifier circuit 295 smoothes the power half-rectified by the rectifier diode D5, generates a pulsating flow, and outputs it to a path connected to the second output path. The direct current (pulsating flow) power generated in this way is input to the second LED (251), and the second LED (251) is lit (emitted) when the direct current (pulsating flow) power is input.

In the second embodiment, since the second LED (251) is configured to be lit (emitted) when direct current (pulsating) power is input, the influence of flicker or the like caused by the emission of the second LED (251). Can be eliminated.
Further, the second LED (251), which is an AC drive LED, can be replaced with the first LED (250), which is a DC drive LED, that is, the types of LEDs to be used can be made uniform. As a result, the illumination lamp can make the light emission amount and the light emission color uniform. In addition, manufacturing management costs can be reduced.

Embodiment 3 FIG.
In the third embodiment, the description will mainly focus on parts different from the first embodiment, and the description of the parts common to the first embodiment will be omitted.
FIG. 14 is a perspective view of the light source device and the metal casing of the illumination lamp according to the third embodiment.
As shown in FIG. 14, the illumination lamp in the third embodiment has a light source device (light source module) 25a different from that in the first embodiment. The light source device 25a differs from the light source device 25 in Embodiment 1 in that the second LED (251) is mounted in the vicinity of the periphery of the light source substrate 254a.
For example, when the first LED (250) and the second LED (251) are driven by DC power as in the illumination lamp 1a described in the second embodiment, the first LED (250) and the second LED (250) are driven as shown in FIG. Even if two LEDs (251) are arranged, the optical performance is hardly affected.

Further, as shown in FIG. 14, eleven first LEDs (250) and one second LED (251) are mounted near the periphery of the light source substrate 254a. Six first LEDs (250) and six second LEDs (251) are arranged at both ends of a straight line (diameter) connecting the two first substrate holes 252. The LED is not mounted at the center of the circular plate surface of the light source substrate 254a. That is, in Embodiment 3, the number of LEDs to be used is reduced. For this reason, material cost and manufacturing cost can be reduced.
Note that the shape of the light source substrate 254a, the arrangement and the number of the first LEDs (250) and the second LEDs (251), and the like are not limited to those illustrated in FIG.

Embodiment 4 FIG.
The lighting device can be configured in combination with the above-described socket that fits into the base of the lighting lamp and the lighting fixture that houses one or more lighting lamps.
FIG. 15 is a diagram showing the illumination device according to Embodiment 4, and is a cross-sectional view showing the main configuration of the illumination device to which illumination lamps 1 and 1a are applied.

As shown in FIG. 14, the illuminating device 8 includes an illuminating lamp 1 (1a), a luminaire main body 70 containing the illuminating lamp 1 (1a), and a lamp socket 71 to which a base 4 of the illuminating lamp 1 (1a) is attached. And a luminaire 7 having a reflector 72 that is mounted in the luminaire main body 70 and reflects light emitted from the illuminating lamp 1 (1a).
The lighting device 8 illustrated in FIG. 14 is a lighting device that is inserted into an opening, which is a fixture mounting portion 80, formed on the ceiling or the like, and irradiates light indoors from the fixture mounting portion 80 side.
The illumination lamp 1 (1a) can be applied to, for example, an illumination device installed on a wall or an illumination device placed on a table, in addition to such a ceiling-mounted illumination device.

Although the illumination lamp 1 (1a) has been described as an example using a non-insulating type lighting device, an insulating type lighting device may be used. Further, the DC power supply device and the current limiting device constituting the lighting device may be a combination of an insulating type and a non-insulating type.
The illumination lamp 1 (1a) has been described using an example in which the metal casing as the first casing and the resin casing 3 as the second casing are separate from each other. The metal casing and the resin casing may be integrally formed. Moreover, the illumination lamp 1 (1a) may have only a metal housing and only a resin housing.

  As mentioned above, although embodiment of this invention was described, this invention is not limited to this embodiment, A various change is possible as needed.

  DESCRIPTION OF SYMBOLS 1, 1a Illumination lamp, 2 1st housing | casing (metal housing), 20 Light source mounting part, 200 Electric wire insertion hole, 201 Screw insertion hole, 202 Light source mounting surface, 21 Mounting groove, 210 Groove outer wall, 211 Engaging recess , 212 groove bottom part, 213 groove inner peripheral wall, 22 fin part, 220 curved surface, 221 continuous surface, 227 cavity, 24 body part, 25, 25a light source device (light source module), 250 first light source element (first LED), 250c First light source circuit (first LED circuit), 251 Second light source element (second LED), 251c Second light source circuit (second LED circuit), 252 First substrate hole (screw insertion hole), 253 Second substrate hole (electric wire insertion) Hole), 254, 254a Light source board (LED board), 256 1st terminal, 257 2nd terminal, 258 3rd terminal, 259 4th terminal, 26 Board fastening screw 27, 27a Lighting device (power conversion device), 270 DC power supply device, 271 filter circuit, 272 rectifier circuit, 273 smoothing circuit, 274 switching circuit, 275 DC power output circuit, 276 control circuit, 277 amplifier, 278 comparator ( Comparator), 279 Waveform generator, 280, 280a, 280e Current limiting device, 281, 281a-280e Current limiting circuit, 286 1st terminal, 287 2nd terminal, 288 3rd terminal, 289 4th terminal, 290 Power cutoff device , 291 Power cutoff circuit, 294 Simple rectifier, 295 Simple rectifier circuit, 296 First terminal, 297 Second terminal, 298 Third terminal, 299 Fourth terminal, 3 Second housing (resin housing), 30 Main body , 300 Insertion guide, 301 Fitting guide, 31 Boss part, 310 Outer part, 11 Inner part, 312 hole, 32 flange part, 33 screw part, 35 lid part, 350 wire tube part, 351 fitting recess, 352 fitting hole part, 4 cap, 410 first terminal, 411 second terminal, 5 Cover, 51 Light transmission part (light transmission part), 52 Mounting cylinder part, 53 Engaging convex part, 54 Fixing part, 600 1st terminal, 601 2nd terminal, 602 3rd terminal, 603 4th terminal, 604 5th Terminal, 605 sixth terminal, 61 input path, 610 first input line (first feed line), 611 second input line (second feed line), 63 first output path, 630 first output line, 631 second Output line, 64 second output path, 640 third output line, 641 fourth output line, 7 lighting fixture, 70 lamp socket, 71 lighting fixture body, 72 reflector, 8 lighting device, 80 fixture mounting portion, 9 external power source ( Commercial exchange Source).

Claims (6)

A DC power supply that outputs the first lighting power to the first output path and converts the AC power input from the external power source to the first lighting power, the second lighting by the limiting current of the AC power a current limiting device for outputting pre Symbol second lighting power to the second output path together when generating power, and a lighting device having a
A first light source circuit to which the first lighting power is turned by the Rukoto supplied via the first output path, the Rukoto the second lighting power is supplied via the second output path the second light source circuit to be turned by a light source device having,
Having
Lighting lamp characterized by. The lighting device is
Outputting the second lighting power from the current limiting device to the second output path when the first lighting power is being output from the DC power supply device to the first output path;
The illumination lamp according to claim 1. The lighting device is
Outputting the second lighting power from the current limiting device to the second output path when the first lighting power is not output from the DC power supply device to the first output path;
The illumination lamp according to claim 2. The lighting device is
A power cutoff device is provided between the external power source and the DC power source device,
The AC power is input from a path branched from the external power source and the power cut-off device to the current limiting device;
The illumination lamp according to any one of claims 1 to 3, wherein: The first lighting power is DC lighting power, and the second lighting power is AC lighting power;
The illumination lamp according to any one of claims 1 to 4, wherein: A luminaire body installed at a position to illuminate the illumination target space and connected to commercial power;
A lamp socket attached to the luminaire body;
The lighting lamp according to any one of claims 1 to 5 , which is attached to the lamp socket and is supplied with the commercial power via the lamp socket .
A lighting device characterized by the above.