The present invention is related to a controlling device of a multifunctional lamp, which enables the multifunctional lamp to uninterruptedly provide illuminating function no matter whether the external power is normally supplied or shut off. The controlling device of the multifunctional lamp also provides emergency detection function. In addition, the controlling device can be more easily assembled than the conventional controlling device.
An emergency illumination device serves to uninterruptedly continuously provide illuminating effect in the case of shutoff of normal power (civil power). The emergency illumination device provides basic illumination for a house, a working site or an escape passage, whereby people can temporarily emergently handle the situation and be guided to escape from the escape passage. The conventional escape guiding equipment includes exit indicator lamp positioned above the safety door and the direction indicator lamp arranged in the corner. With the emergency illumination device, in the case that the normal power is shut off, people can still tell the escape direction and the position of the safety door so as to ensure safety.
Most of the typical emergency lights are wall emergency lights. In general, the emergency lights are mounted on the walls of the hallways, the staircases, the escape passages, etc. of various sites. Generally, an emergency light is equipped with an AC/DC automatic switching unit. At normal time, the spare battery is automatically charged by AC power. When saturated, the AC power will automatically stop charging the battery. In the case that the power is shut off, the emergency light is switched to the spare battery for supplying power as emergent illumination.
The emergency light is independent from the original illuminator of a site. A consumer often purchases emergency lights and installs the emergency lights in a building. However, as aforesaid, the emergency lights are mounted on the walls of the hallways, the staircases, the escape passages, etc. In the case that the civil power is shut off, the emergency lights can only project light from the walls toward the ground. The illuminated area is quite limited.
An indoor illuminator in a house or a working site, such as a fluorescent lamp, is turned on or off by means of a switch. The common fluorescent lamp is powered on by civil power supply. In contrast to the common fluorescent lamp, the conventional emergency light is extinguished at normal time and provides illuminating effect only when the power is shut off. It is tried by the applicant to provide an emergency lamp, which can still provide illuminating function in the case that the civil power is shut off. Accordingly, the indoor light not only serves to provide illuminating effect at normal time, but also serves as an emergency light for providing illuminating function in an emergency.
Moreover, the present invention is applicable to other emergency equipment. In case that the normal power is shut off, the emergency equipment can be still powered on to keep the detection or alarm function.
It is therefore a primary object of the present invention to provide a controlling device of a multifunctional lamp, which uninterruptedly and more stably provides illuminating effect no matter whether the external power is normally supplied or shut off.
It is a further object of the present invention to provide the above controlling device of the multifunctional lamp, which includes a controller for detecting the state of the connection between the external power supplying circuit and the uninterruptible equipment, (especially the switching state of the switch). The controller serves to control turning on/extinguishing of the lamp. Also, the arrangement of the controlling device is simplified.
It is a further object of the present invention to provide the above controlling device of the multifunctional lamp, which can be electrically connected to a detection system to also have a heat/smoke detection function.
According to the above objects, the controlling device of the multifunction lamp of the present invention includes a spare power supply circuit for providing spare power, a controller connectable to an external power supply circuit and the spare power supply circuit, and a voltage modulation module connected between the controller and a powered end equipment. The controller is controllable by a user to choose the power source. Alternatively, the controller itself can judge and choose the power source according to whether the external power supply circuit normally supplies power. The controller includes a rectifying module and a central processing unit. The rectifying module is connected to the external power supply circuit to respectively send the rectified power to the spare power supply circuit and the voltage modulation module. According to the power state of the external power supply circuit, the central processing unit controls the voltage modulation module to or not to supply power for the powered end equipment. In addition, the controller can be electrically connected to a detection system to also provide emergency detection function.
The present invention can be best understood through the following description and accompanying drawings wherein:
Please refer to
In this embodiment, the external power supply circuit 3 can be a civil power, a power supply circuit of a generator or an externally connected power supply. The spare power supply circuit 5 includes a charging circuit 51, a battery 52 connected with the charging circuit 51 and an output module 53 connected with the battery 52. The rectifying module 21 sends the power to the charging circuit 51. According to the state of power reservation of the battery 52, the charging circuit 51 charges the battery 52. The output module 53 is controlled by the central processing unit 22, whereby when the external power supply circuit 3 stops supplying power, the output module 53 emergently outputs the power of the battery 52 to the powered end equipment 1. Also, the charging circuit 51 is connected to the central processing unit 22 for conducting the power of the battery 52 to provide necessary power for the controller 2. Accordingly, at normal time and during the shutoff period, the controller 2 can keep normally working. In another preferred embodiment, the central processing unit 22 is connected to the spare power supply circuit 5 (directly connected to the charging circuit 52) to detect the state of power reservation of the battery 52. Accordingly, the controller 2 can judge whether the battery 52 should be charged or not.
Referring to
Referring to
In operation, the greatest difference between the present invention and the conventional lamp equipped with an uninterruptible power system is that it is unnecessary to additionally connect another power line B. In contrast, the original power line A is directly used. In this embodiment, the detection circuit 212 of the rectifying module 21 detects the state of the switch 31 of the external power supply circuit 3. By means of the control of the central processing unit 22, the original power circuit is directly used to supply power for the spare power supply circuit 5 without additional working. Accordingly, it is unnecessary to additionally lay any other power circuit to supply power for the spare power supply circuit 5. To speak in more detail, the multifunctional lamp of the present invention obtains power in such a manner that according to the state of the switch 31 or the power input mode of the switch 31 operated by a user, the central processing unit 22 judges whether a user turns on the lamp, turns off the lamp or the external power supply circuit 3 stops supplying power.
According to the aforesaid, in the case that the power supply for the central processing unit 22 is chosen between the states of the switch 31, a small load (such as a resistor or a neon lamp) must be parallelly connected between two contacts of two ends of the switch 31, (that is, two contacts for forming closing/opening). This is for forming a weak current, which will still enter the controller 2 when the switch 31 is opened. Referring to
Referring to
In another power supply selection of the central processing unit 22, the selection is made on the basis of the mode in which a user operates the switch 31, wherein the switch 31 is kept in a closed state (to form the additional power line B as in the conventional device). When a user turns on the lamp, it is necessary for the user to “open and close” the switch 31 in a preset time, (for example, in one second). (That is, the user needs to switch off the switch 31 and then switch on the switch 31 in the preset time.) At this time, the detection circuit 212 of the rectifying module 21 detects this power change (from the original high level of closed state into a low level and then from the low level into the high level in the preset time). However, due to differences between the designs of the circuits, such procedure alternatively can be a two-stage change of level. The central processing unit 22 will close or open the voltage modulation module 4 on the basis of the change of level. In the case that the lamp originally is not turned on, the central processing unit 22 will restrain the controlling switch 42 from being switched on and the powered end equipment 1 is lighted up via the voltage transformation element 41. Identically, when the user desires to turn off the lamp, the switch 31 is repeatedly opened and closed to turn off the lamp.
In the case that the external power supply module 3 stops supplying power, the switch 31 is still switched on. However, without the external power, the detection circuit 212 will detect a low level for a longer time (obviously longer than the aforesaid preset time). The central processing unit 22 will define such longer low-level state as a power cut state. (Due to the differences between the designs of the circuits, the detection circuit 212 will alternatively detect a high level for a longer time.) Under such circumstance, the central processing unit 22 will activate the spare power supply circuit 5 to emergently supply power. Also, the switch 31 is switched off and kept in an open state. This simulates the power cut state of the external power supply module 3 and also tests whether the spare power supply circuit 5 can normally work. Accordingly, the uninterrupted power system can be maintained. It should be noted that in comparison with the present invention, the conventional emergency illumination equipment is hung on a wall in a higher position. It is uneasy to maintain or test the conventional emergency illumination equipment. In contrast, a user only needs to control the state of the switch 31 to achieve the same object.
In both the above controlling modes, there is no additional power line B and the layout is simplified into the arrangement as shown in
In the multifunctional lamp of the present invention, the controller 2 and the spare power supply circuit 5 can be integrated into a controlling device. The controlling device can be used in cooperation with a powered end equipment 1 itself equipped with a voltage transformation element 41 (as shown in
In
As shown in
Besides, in consideration of saving energy, the powered end equipment 1 can be an LED lamp with lower power consumption. In addition, the voltage transformation element 41 is a voltage transformation unit adapted to the LED lamp. The voltage transformation unit serves to transform the power of the rectifying module 21 into the power suitable for the LED lamp as the powered end equipment 1. Similarly, the output module 53 of the spare power supply circuit 5 is correspondingly designed.
In conclusion, the controlling device of the multifunctional lamp of the present invention can be easily laid out and have better function. The present invention enables the multifunctional lamp to uninterruptedly provide illuminating function in both the cases that the external power is supplied and the civil power is cut off. The controlling device of the multifunctional light can be also connected to an emergency detection system 6 to provide emergency detection function.
The above embodiments are only used to illustrate the present invention, not intended to limit the scope thereof. Many modifications of the above embodiments can be made without departing from the spirit of the present invention.
This application is a continuation-in-part application of U.S. patent application Ser. No. 11/523,517.
Number | Date | Country | |
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Parent | 11523517 | Sep 2006 | US |
Child | 12385097 | US |