JP5473051B2 - Light source lighting device and lighting apparatus - Google Patents

Description

  The present invention relates to a light source lighting device and a lighting fixture that turn on a light source by supplying electric power.

  It has been a long time since lighting fixtures using fluorescent lamps and HID lamps have been used. In the use of the luminaire, when the lamp reaches the end of its life, the luminaire ceases to be lit, it is difficult to illuminate, or the previous brightness is not obtained. As a result, the user is encouraged to have reached the end of their life, and the fluorescent lamp or the like is replaced.

  On the other hand, the luminaire itself has a useful life, that is, a so-called life. It appears due to fatigue of metal components, a decrease in insulation resistance, and the like. However, when the fluorescent lamp or the like is normally lit, the user generally keeps using it without noticing deterioration of the components of the light source lighting device. The problem in that case is, for example, a case in which lighting suddenly disappears due to a failure of a part of the light source lighting device in a museum or the like, which gives the user an unpleasant feeling.

  In view of such a background, by integrating the discharge lamp lighting time, estimating the lifetime by exceeding the predetermined time, lowering the voltage value applied to the discharge lamp, or stopping the oscillation There is a light source lighting device and a lighting fixture that perform a protection operation (for example, see Patent Document 1).

JP 2001-185374 A (FIG. 1, claim 1)

However, in the conventional light source lighting device and lighting fixture disclosed in Patent Document 1, when the lifetime is estimated, the protective operation such as lowering the voltage value applied to the discharge lamp or stopping the oscillation is continued. Do it.
Therefore, the original function cannot be provided, and the user can always feel uncomfortable.

  The present invention has been made in order to solve the above-mentioned problems, and its purpose is to inform the user of the life time of the light source lighting device and to carry out a normal lighting operation after the notification, thereby discomforting the user. It is an object of the present invention to provide a light source lighting device and a lighting fixture that can continue to provide their original functions without giving any light.

The light source lighting device according to the present invention, to supply power to the light source, a lighting circuit for lighting the light source, and determines the lighting circuit life determination unit that the lighting circuit is reached the life duration time, the lighting circuit Light source power control means for controlling the power supplied to the light source and thereby controlling the lighting state of the light source, the light source power control means reaching the life time by the lighting circuit life judgment unit. When power is turned on to turn on the light source using the lighting circuit determined to have been, the power supply for preheating the light source is performed over a first period, and after the end of the first period, The power supply for starting lighting of the light source is executed over a second period, and after the second period, the light source is periodically blinked in a state where the light output is lower than the normal lighting state. Power supply for the third period, and after the end of the third period, the power supply for executing the normal lighting state of the light source, and in the third period, The minimum level of the light output of the light source is set to a level lower than the light output level of the light source in the second period, and when the cumulative use time of the lighting circuit is short, Changing the period so that the frequency of blinking of the light source becomes higher, and increasing the third period continuously or stepwise as the accumulated usage time of the lighting circuit becomes longer. It is characterized by.

In the present invention, the light source power control unit, for reporting life duration time of the lighting circuit of the user F in the third period after power-on.
Thereby, after the notification period, the light source is turned on in the normal mode.
Therefore, the notification of the life time is performed every time the power is turned on to inform the user of the life time of the lighting circuit, and after the notification, the normal function is performed without causing discomfort to the user by performing a normal lighting operation. You can continue to provide.

In the present invention, for example, when the control of the supplied power is performed such that the light source blinks, the blinking frequency is changed according to the accumulated usage time.
Thereby, at the beginning of the lifetime, for example, blinking is performed at a low frequency, and when it is continuously used beyond the lifetime, for example, blinking is performed at a high frequency.
Therefore, life notification to the user can be performed with a higher visual effect.

In the present invention, the life notification period of the lighting circuit to the user is set according to the accumulated usage time.
Thereby, the lifetime notification period is shortened, for example, at the beginning of the lifetime, and the lifetime notification period is increased, for example, when the lifetime is continued beyond the lifetime.
Therefore, it is possible to effectively notify the user of the degree that the lifetime has passed through the lifetime notification period.

In the present invention, after the preheating and the starting process necessary for turning on the light source are reliably performed, the operation shifts to an operation for notifying the life time.
This prevents unnecessary stress from being applied to the light source such that the life of the light source is shortened when the preheating / starting energy is inappropriate.
Therefore, the life notification can be performed while maintaining the life of the light source.

  The lighting fixture which concerns on this invention is provided with the said light source lighting device, It is characterized by the above-mentioned.

In the present invention, the light source power control means of the light source lighting device notifies the user of the lifetime of the lighting circuit only for a certain period after the power is turned on.
Thereby, the luminaire turns on the light source in the normal mode after the notification period.
Therefore, the notification of the life time is performed every time the power is turned on to inform the user of the life time of the lighting circuit, and after the notification, the normal function is performed without causing discomfort to the user by performing a normal lighting operation. It is possible to provide a luminaire that can continue to be provided.

According to the light source lighting device and the lighting fixture of the present invention, when the lighting circuit life determination unit determines that the lighting circuit has reached the end of its lifetime, the light source power control means starts to supply power to the lighting circuit after a predetermined time has elapsed. The power supply to the light source is changed to a supply power different from the normal lighting state during the period.
Thereby, it has the effect that it can continue to provide the original function without giving discomfort to the user by informing the user of the lifetime of the lighting circuit and performing the normal lighting operation after the notification.

The block block diagram of the lighting fixture which equips the light source lighting device of 1st Embodiment which concerns on this invention The flowchart explaining the control operation of the light source lighting device shown in FIG. Time chart explaining the control operation of the light source lighting device shown in FIG. Time chart explaining the control operation of the light source lighting device of the second embodiment according to the present invention Time chart for explaining the control operation of the life notification mode in the light source lighting device shown in FIG. Time chart for explaining the control operation of the first modification of the life notification mode of the light source lighting device shown in FIG. Time chart for explaining the control operation of the second modification of the life notification mode of the light source lighting device shown in FIG. The block block diagram of the lighting fixture which equips the light source lighting device of 3rd Embodiment which concerns on this invention

  Hereinafter, the lighting fixture which concerns on several embodiment of this invention is demonstrated with reference to drawings.

(First embodiment)
As shown in FIG. 1, the lighting fixture 1 which is 1st Embodiment of this invention is comprised from the lamp | ramp 2 which is the discharge lamp light source of a hot cathode fluorescent lamp, and the light source lighting device 10. As shown in FIG.
The light source lighting device 10 includes a lighting circuit 11 including an LC resonance circuit 15 including a rectifier circuit 12, a step-up chopper circuit 13, an aluminum electrolytic capacitor C0, an inverter circuit 14, a coil L, and a capacitor C1, a control power supply circuit 17, and light source power control. An inverter oscillation control circuit 18 functioning as a means, an accumulated lighting time counting circuit 19 functioning as a lighting circuit life determination unit, and an lamp life end / abnormality detection circuit 20 functioning as a light source life determination unit; Become.

  In the lighting circuit 11, an AC input voltage, which is a commercial power supply, is converted into a DC high voltage (Vdc) through a rectifier circuit 12 and a boost chopper circuit 13. The converted DC high-voltage is converted into a high frequency by an inverter circuit 14 composed of power MOS FETs Q 1 and Q 2, and power is supplied to the lamp 2 through the LC resonance circuit 15.

  The cumulative lighting time timer circuit 19 has a built-in clock means such as a clock timer, and measures the cumulative lighting time of the lighting circuit 10 based on the temperature of the aluminum electrolytic capacitor C0 to estimate the life of the lighting circuit 11.

  The lamp life end / abnormality detection circuit 20 estimates the life of the lamp 2 based on the lighting time of the lamp 2.

  The lighting circuit 11 reaches the end of its life due to a decrease in the capacity of the electronic components used, the aluminum electrolytic capacitor C0, and the deterioration of the insulation performance of the winding components. In any case, the operating temperature greatly affects the life of the electronic component. When the lamp 2 is not lit, the temperature in the lighting circuit 11 is equal to the ambient temperature, but the lamp 2 is lit. The operating temperature of each electronic component increases due to the heat generated by the components in the lighting circuit 11.

  Generally, in the lighting circuit 11, the lifetime of the aluminum electrolytic capacitor C0 is the shortest compared to other electronic components. Or it is designed to be the shortest. The lifetime of the aluminum electrolytic capacitor C0 is about ½ when the temperature rises by 10 ° C. according to Arrhenius' law. According to this law, if the operating temperature of the aluminum electrolytic capacitor C0 when the lamp is lit is known, the lifetime of the aluminum electrolytic capacitor can be estimated by the following equation.

ここで、Ｌ：Ｔ℃での推定寿命
Ｌ_０：保証寿命時間
Ｔ_０：推定寿命時間
Ｔ：周囲温度

Where L: Estimated life at T ° C
L ₀ : Guaranteed lifetime
T ₀ : Estimated lifetime
T: Ambient temperature

  When the lighting circuit 11 reaches the end of its life, there is a possibility of entering into an unsafe mode. Therefore, it is important to replace the lighting circuit 11 or the lighting fixture 1 while operating at the end of the life. For this purpose, it is necessary to inform the user that the end of life of the lighting circuit 11 is approaching.

  The inverter oscillation control circuit 18 executes the life notification mode when it is estimated by the cumulative lighting time counting circuit 19 that the life of the lighting circuit 11 is at the end. In the life notification mode, the lamp 2 is turned on in a state where the output of the lamp 2 is lower than the normal lighting state by changing the switching frequency of the inverter circuit 14 within a few seconds noticed by the user.

  Next, the control operation of the lighting fixture 10 will be described.

Figure 2, as shown in FIG. 3, the power at time t0 starts the control by being turned, until the accumulated lighting time by counting data of cumulative lighting time counting circuit 19 reaches a predetermined estimated life time T ₀ Then, as in a normal sequence, the preheating mode is shifted to the lighting mode through the start mode (S101 → S102 → S103 → S104).
Here, T ₀ is the estimated life time of the lamp 2 estimated from the operating temperature of the aluminum electrolytic capacitor C0 and the like.

When the cumulative lighting time exceeds the estimated life time T ₀ , the cumulative lighting time flag is set at time t1, and in order to notify the user of the life of the lighting circuit 11, the life notification mode is maintained until time t2 at a fixed time W after the start mode. The lamp 2 is turned on at (S101 → S102 → S103 → S105 → S104).

  In the life notification mode, the lamp 2 is turned on in a state where the output of the lamp 2 is lower than the normal lighting state by changing the switching frequency of the inverter circuit 14 within a few seconds noticed by the user. It should be noted that it is desirable to keep the time of the life notification mode within several seconds so that the user notices an abnormality in the lighting circuit 11 without feeling uncomfortable. This is because if the time is too short, the user will not notice any abnormality, and if the time is too long, the user may feel uncomfortable and may not be allowed in actual use.

When the cumulative lighting time exceeds the estimated life time T ₀ , the lamp life end / abnormality detection circuit 20 estimates the life of the lamp 2 based on the lighting time of the lamp 2 during the operation of the life notification mode. When the abnormality detection circuit 20 estimates the life of the lamp 2, an interruption routine is executed, and the inverter oscillation control circuit 18 stops the oscillation of the inverter circuit 14 (S103 → S105 → S106).

  At this time, in the life notification mode, the lamp 2 is turned on in a state where the output is lower than that in the normal lighting state to notify the user that the life of the lighting circuit 11 is near.

As described above, in the light source lighting device 10 of the first embodiment of the present invention, the inverter oscillation control circuit 18 serving as the light source power control means notifies the user of the life time of the lighting circuit 11 after the power is turned on. Limited to a period.
Thereby, after the notification period, the lamp 2 is lit in the normal mode.
Accordingly, the normal function is performed without causing discomfort to the user by performing a normal lighting operation after notifying the user while notifying the user of the life time of the lighting circuit 11 by notifying the user every time the power is turned on. Can continue to provide.

In the light source lighting device 10 according to the first embodiment of the present invention, after the preheating and starting processes necessary for lighting the lamp 2 are reliably performed, the operation shifts to an operation for notifying the life time.
This prevents unnecessary stress from being applied to the light source that would shorten the life of the lamp 2 when the preheating / starting energy is inappropriate.
Therefore, the life notification of the lamp 2 can be performed while the life of the lamp 2 is maintained.

In the luminaire 1 according to the first embodiment of the present invention, the inverter oscillation control circuit 18 which is the light source power control means of the light source lighting device 10 notifies the user of the life time of the lighting circuit 11 only for a certain period after the power is turned on. Limited to.
Thereby, the luminaire 1 lights the lamp 2 in the normal mode after the notification period.
Accordingly, the normal function is performed without causing discomfort to the user by performing a normal lighting operation after notifying the user while notifying the user of the life time of the lighting circuit 11 by notifying the user every time the power is turned on. Can be provided.

(Second Embodiment)
Next, the light source lighting device and lighting fixture of 2nd Embodiment of this invention are demonstrated. In the following embodiments, components that are the same as those in the first embodiment described above or functionally similar components are simplified or omitted by giving the same reference numerals or equivalent symbols in the drawings. To do.

  As shown in FIG. 4, the light source lighting device 30 according to the second embodiment of the present invention periodically changes the output of the lamp 2 at the repetition frequency f in the life notification mode executed from time t1 to time t2. To control.

  At this time, the frequency f at which the lamp output periodically changes may be gradually increased. Then, it is possible to make the user recognize more that the life of the lighting circuit 11 is approaching.

As shown in FIG. 5, the life announcement mode and executes the time constant estimated life time T ₀ after.

As shown in FIG. 6, in the first modification of the life notification mode, the time of the life notification mode is gradually extended after the estimated life time T ₀ has passed.

As shown in FIG. 7, in the second modification of the life Notification mode, which stepwise extend the life announcements mode time has passed the estimated life time T _0.

  By doing in this way, it can make a user recognize more that the lifetime of the lighting circuit 11 is approaching.

  In addition, for the predetermined period of the life notification mode, the life notification period should be shortened, for example, at the beginning of the life period, and the life notification period should be lengthened, for example, if it has been used beyond the life period. Thus, it can be arbitrarily changed according to the accumulated usage time of the lighting circuit 11.

In the light source lighting device 30 according to the second embodiment of the present invention, for example, when the supplied power is controlled such that the lamp 2 blinks, the blinking frequency is changed according to the accumulated usage time.
Thereby, at the beginning of the lifetime, for example, blinking is performed at a low frequency, and when it is continuously used beyond the lifetime, for example, blinking is performed at a high frequency.
Therefore, life notification to the user can be performed with a higher visual effect.

In the light source lighting device 30 of the second embodiment of the present invention, the lifetime notification period of the lighting circuit 11 to the user is set according to the accumulated usage time.
Thereby, the lifetime notification period is shortened, for example, at the beginning of the lifetime, and the lifetime notification period is increased, for example, when the lifetime is continued beyond the lifetime.
Therefore, it is possible to effectively notify the user of the degree that the lifetime has passed through the lifetime notification period.

(Third embodiment)
Next, the light source lighting device and lighting fixture of 3rd Embodiment of this invention are demonstrated.

  As shown in FIG. 8, the light source lighting device 50 provided in the lighting fixture 40 of the third embodiment of the present invention includes a Vdc ripple voltage detection circuit 51 in the inverter control circuit 14.

  The Vdc ripple voltage detection circuit 51 estimates the end of life of the lighting circuit 11 by measuring the ripple voltage of the aluminum electrolytic capacitor C0.

  Usually, since the capacity of the aluminum electrolytic capacitor C0 decreases with the passage of time of use, the ripple voltage of the inverter Vdc gradually increases. When the ripple voltage increases, the lamp 2 flickers, and the lamp life end / abnormality detection circuit 20 operates to stop oscillation.

  Therefore, when the Vdc is detected and the lamp 2 starts to flicker, or when the ripple voltage (Limit L or Limit H) just before that is reached, the life of the lighting circuit 11 is determined.

  Thus, when the life is determined, the user recognizes the life of the lighting circuit 11 by lighting the lamp 2 in the life notification mode as described above.

  The light source lighting device 50 and the luminaire 40 according to the third embodiment of the present invention have the same effects as the first embodiment. In particular, according to the present embodiment, it is only necessary to simply measure the ripple voltage of the aluminum electrolytic capacitor C0 by the Vdc ripple voltage detection circuit 51, so that the circuit configuration can be greatly simplified and manufactured advantageously in terms of cost. it can.

  In each of the above-described embodiments, the light source lighting devices 10, 30, and 50 for lighting the lamp 2 of the hot cathode fluorescent lamp as the light source have been described as an example. The same effect can be obtained even when applied to the light source lighting circuit.

  Further, the lighting circuit 11 and the like used in the above embodiments are not limited to those illustrated, and can be appropriately changed.

1, 40 Lighting equipment 2 Lamp (light source)
10, 30, 50 Light source lighting device 11 Lighting circuit 18 Inverter oscillation control circuit (light source power control means)
19 Cumulative lighting time clock circuit (lighting circuit life determination unit)

Claims (2)

Supplying power to the light source, a lighting circuit for lighting the light source,
A lighting circuit life determination unit that determines that the lighting circuit has reached the end of its life;
Light source power control means for controlling the lighting circuit to control the power supplied to the light source, thereby controlling the lighting state of the light source;
With
The light source power control means includes:
When the power is turned on to turn on the light source using the lighting circuit determined to have reached the life time by the lighting circuit life determination unit,
Power supply for preheating the light source is performed for a first period;
After the end of the first period, power supply for starting lighting of the light source is executed over a second period,
After the end of the second period, the power supply for periodically flashing the light source with a light output lower than the normal lighting state is executed over a third period,
After the end of the third period, power supply is performed to bring the light source into the normal lighting state, and in the third period, the light output minimum level of the light source is set to the second level. Set to a level lower than the light output level of the light source in the period of
If the accumulated usage time of the lighting circuit is shorter than when the cumulative usage time is shorter, the period is changed so that the blinking frequency of the light source is higher,
And, as the cumulative usage time of the lighting circuit becomes longer, the third period is increased continuously or stepwise.
A light source lighting device characterized by that. An illumination fixture comprising: a light source lighting device according to claim 1.

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