CN204442790U - A lighting device and its driving module - Google Patents

Abstract

The utility model provides a lighting device and a driving module thereof. The driving module is used to drive a light-emitting module of an alternating current lighting device. The driving module includes an oscillating unit, a counting unit and a control unit. The oscillating unit is used to generate a pulse. The counting unit is electrically connected to the oscillating unit, and is used to calculate a power-off time between two switchings of a two-stage switch according to the pulse. The control unit is electrically connected to the counting unit, and controls a lighting state of the light-emitting module to be a preset lighting state, a gradual lighting state or a set lighting state according to the power-off time, so that the user can adjust the lighting brightness required by the user.

Description

A lighting device and its driving module

technical field

The utility model relates to an illuminating device and its driving module, in particular to an illuminating device with the function of adjusting brightness and its driving module.

Background technique

In traditional lighting life, people's demand for lighting is nothing more than turning on and off. But people may want to adjust the brightness of the light to meet the needs of the time. For example, when reading books or newspapers and magazines, they want the light to be brighter, when listening to music or watching movies, they want the light to be darker, and when they are resting or sleeping, they want the light to be darker. One point, traditional lighting only has the function of turning on or off, which will not be able to meet the above needs. A known lighting device with the function of adjusting brightness usually needs to be equipped with a special dimmer when installed by consumers, and even the original wiring and decoration need to be changed, so it cannot be controlled by a traditional wall switch. For example a simple two-stage switch. In addition, usually one switch needs to control multiple lighting devices in one lighting area, so it must be required that multiple lighting devices in the same lighting area can be synchronously adjusted to the same lighting state under the switching control of the same control switch.

To sum up, how to provide a lighting device and its driving module that can adjust the brightness by using a traditional two-stage switch is a goal that requires great efforts.

Utility model content

The utility model provides a lighting device and its driving module, which uses a control unit to control a lighting state of a light-emitting module to a preset lighting state according to a power-off time between two switchings of a two-stage switch, A gradual lighting state or a set lighting state for the user to adjust the required lighting brightness to achieve the effect of stepless natural dimming.

A lighting device according to an embodiment of the present invention is driven by an alternating current to provide lighting, and the lighting device includes a light emitting module and a driving module. The driving module includes an oscillation unit, a counting unit and a control unit. The oscillating unit is used to generate a clock. The counting unit is electrically connected with the oscillating unit, and is used for calculating a power-off time between two switchings of a two-stage switch according to the clock pulse. The control unit is electrically connected with the counting unit, and controls a lighting state of the light-emitting module to be a preset lighting state, a gradual lighting state or a set lighting state according to the power-off time.

A driving module according to another embodiment of the present invention is used to drive a light-emitting module of an AC lighting device. The driving module includes an oscillation unit, a counting unit and a control unit. The oscillating unit is used to generate a clock. The counting unit is electrically connected with the oscillating unit, and is used for calculating a power-off time between two switchings of a two-stage switch according to the clock pulse. The control unit is electrically connected with the counting unit, and controls a lighting state of the light-emitting module to be a preset lighting state, a gradual lighting state or a set lighting state according to the power-off time.

Description of drawings

In order to make the above-mentioned purposes, features and advantages of the utility model more obvious and easy to understand, the specific implementation of the utility model will be described in detail below in conjunction with the accompanying drawings, wherein:

FIG. 1 is a schematic diagram showing a lighting device according to an embodiment of the present invention.

FIG. 2 is a block diagram showing a driving module according to an embodiment of the present invention.

FIG. 3 is a block diagram showing a driving module according to another embodiment of the present invention.

FIG. 4 is a flow chart showing that the driving module controls the lighting state of the light emitting module according to an embodiment of the present invention.

10 drive module

12 detection unit

14 Oscillating unit

16 counting units

18 control unit

19 storage unit

20 light emitting modules

22, 24 LEDs

30 rectifier unit

AC alternating current

CK clock

F frequency

S node

SW Two-stage switch

Detailed ways

An illuminating device according to an embodiment of the present invention includes a driving module and a light emitting module, and the illuminating device is driven by an alternating current to provide illumination. Please refer to FIG. 1 , in an embodiment, the lighting device includes a driving module 10 , a light emitting module 20 and a rectifying unit 30 . In this embodiment, the rectification unit 30 is a bridge rectifier, which is electrically connected to the alternating current AC for converting the alternating current AC into a direct current (not shown) for the driving module 10 to drive the light emitting module 20 . The light emitting module 20 has at least one light emitting diode 22, 24, and its circuit structure can be connected in series or in parallel, but not limited thereto.

Please refer to FIG. 1 and FIG. 2 together. The driving module 10 includes an oscillation unit 14 , a counting unit 16 and a control unit 18 . The oscillation unit 14 is used to generate a clock CK. The counting unit 16 is electrically connected to the oscillating unit 14 for calculating a power-off time between two switchings of the two-stage switch SW according to the clock CK. It should be noted that the power-off time between two switchings of the two-stage switch SW is the length of time for the user to turn off the two-stage switch SW during the operation of turning on, then turning off, and turning on the switch SW again. In one embodiment, the alternating current AC is converted into a direct current (i.e. steamed bun wave) after passing through the rectification unit 30, and the counting unit 16 can detect the presence or absence of the direct current through the node S, and know whether the switching state of the two-stage switch is On or off, and the de-energization time between two transitions of the two-stage switch. It can be understood that if the light emitting module 20 is a light emitting diode driven by alternating current, the lighting device only includes the driving module 10 and the light emitting module 20 , but it is not limited thereto.

The control unit 18 is electrically connected to the counting unit 16, and controls a lighting state of the light emitting module 20 to be a preset lighting state, a gradual lighting state or a set lighting state according to the power-off time. In one embodiment, the preset lighting state is a fixed brightness, such as a full brightness state. The gradient lighting state is a gradient brightness that gradually becomes darker or brighter with time. For example, the brightness change of the gradual lighting state is gradually changing from full bright to full dark, then from full dark to full bright, and gradually changing in sequence. The lighting state is set to be a set brightness corresponding to the gradual brightness when the two-stage switch SW is switched twice. For example, the user switches the two-stage switch SW twice at the moment when the gradual lighting state is half-bright, and the power-off time between the two switches is less than a specific time, so that the lighting state is switched from the gradual lighting state to the set Lighting state, that is, setting the half-brightness state as the brightness value that the user wants to use. In one embodiment, the gradual lighting state can realize a gradual brightness of the light-fading state and the light-fading state in an analog mode or a digital mode. Wherein, the analog mode is, for example, a mechanism for charging and discharging, and the digital mode is, for example, a mechanism for turning on or off in stages, but not limited thereto.

Continuing the above description, the control unit 18 also controls the lighting state to switch to a preset lighting state when the power-off time is longer than a specific time, such as more than 3 seconds, for example, the lighting state returns to a full-brightness state. The control unit 18 also controls the lighting state to switch from a preset lighting state to a gradual lighting state, or to switch from a gradual lighting state to a set lighting state when the power-off time is less than a specific time.

Please refer to FIG. 3 , the driving module of an embodiment of the present invention further includes a detection unit 12 electrically connected to the oscillation unit 14 . By detecting an electrical signal at the node S, the detection unit 12 can detect a frequency F of the corresponding alternating current AC, so that the oscillation unit 14 can correct the clock CK according to the frequency F. For example, the detection unit 12 detects the electrical signal of the node S, and it can be known that the frequency of a mains power is 60 Hz.

In particular, through the combination of the detection unit 12 and the oscillation unit 14, multiple lighting devices that are electrically controlled by the same two-stage switch SW in the same lighting area use the AC frequency F of the available commercial power as a calibration reference , to synchronously correct the clock CK generated by the oscillation unit 14 of each lighting device. With this circuit structure, the counting unit 16 of each lighting device can accurately calculate the power-off time between two switchings of the two-stage switch SW, so that the control unit 18 can control the lighting state without being affected by the products of different lighting devices. Variation effects can achieve the effect of synchronously controlling multiple lighting devices.

Please continue to refer to FIG. 3 , the drive module of an embodiment of the present invention also includes a storage unit 19, which is electrically connected to the control unit 18, and is used to store a corresponding data for switching the lighting state from the gradual lighting state to the set lighting state. . In one embodiment, the user switches the two-stage switch SW twice at the moment when the gradual lighting state gradually changes to a half-bright state over time, wherein the power-off time between the two switches is less than a specific time, so that the lighting state changes from gradual lighting The state is switched to the set lighting state, and the corresponding data is stored in the storage unit 19, and the lighting module 20 is driven according to the set lighting state; then, the two-stage switch SW is switched twice, and the power-off time between the two switching The lighting state is switched from the set lighting state to the preset lighting state if the time is greater than a specific time. Wherein, although the storage unit 19 stores the corresponding data of the preset lighting state and the setting lighting state at the same time, the control unit 18 drives the light emitting module 20 according to the preset lighting state. It can be understood that although the storage unit 19 has not cleared the stored corresponding data, in the next operation, the power-off time between two switchings is less than a specific time, so that the lighting state is switched from the gradual lighting state to the set lighting state, The control unit 18 will store new corresponding data in the storage unit 19 to overwrite the previous corresponding data, and drive the light emitting module 20 according to the newly set lighting state.

In one embodiment, the control unit 18 also clears the corresponding data of the storage unit 19 when the power-off time is greater than a specific time, wherein the storage unit 19 only stores the corresponding data of the set lighting state, and the control unit 18 is based on the preset lighting state The light emitting module 20 is driven.

Referring to FIG. 4 , the operation of the driving module according to an embodiment of the present invention will be described below. After the user turns on the two-stage switch, the light-emitting module enters into a preset lighting state with a fixed brightness, for example, a full-brightness state. Next, switch the two-stage switch SW twice, if the power-off time between the two switches is longer than a specific time, such as 3 seconds, then the lighting state remains as the preset lighting state. If the power-off time between two switchings is less than 3 seconds, the lighting state is switched from a preset lighting state to a gradual lighting state. Next, the lighting state of the light-emitting module is a gradual lighting state, and its brightness gradually decreases from full brightness to dark over time. At the moment when the brightness gradually changes to the brightness selected by the user over time, the two-stage switch SW is switched twice and the power is turned off for a period of time. In less than 3 seconds, the lighting state is switched from a gradual lighting state to a set lighting state. Similarly, if the power-off time between two switchings is longer than 3 seconds, the lighting state returns from the gradual lighting state to the preset lighting state. When the user switches the two-stage switch SW twice again, the power-off time between the two switches is less than 3 seconds, and the lighting state switches from the set lighting state to a gradual lighting state, and its brightness gradually changes to full darkness over time again Or gradually change to full brightness, which can be designed by those with common knowledge; on the contrary, the power-off time between two switchings is more than 3 seconds, so that the set lighting state returns to the preset lighting state.

To sum up the above, the lighting device and its drive module of the present utility model utilizes a control unit to control a lighting state of a light emitting module to a preset lighting state according to a power-off time between two switchings of a two-stage switch 1. A gradual lighting state or a set lighting state for the user to adjust the required lighting brightness to achieve the effect of stepless natural dimming. In addition, through the combination of the detection unit and the oscillation unit, multiple lighting devices that are electrically controlled by the same two-stage switch in the same lighting area, use the AC frequency of the available mains power as the calibration reference, and calibrate each lighting device synchronously. The clock generated by the oscillator unit of the device. The counting unit of each lighting device can accurately calculate the power-off time between two switchings of the two-stage switch for the control unit to control the lighting state of the lighting device, so as to achieve the effect of synchronously controlling multiple lighting devices.

Although the present utility model has been disclosed above with preferred embodiments, it is not intended to limit the present utility model. Any person skilled in the art may make some modifications and improvements without departing from the spirit and scope of the present utility model. Therefore, the protection scope of the present utility model should be defined by the claims.

Claims (14)

1. a lighting device, it is driven by an alternating current to provide illumination, and this lighting device comprises:

One light emitting module; And

One driver module, it comprises:

One oscillating unit, in order to produce a clock pulse;

One counting unit, itself and this oscillating unit is electrically connected, in order to calculate the power-off time of a two-section switch between twice switching according to this clock pulse; And

One control unit, itself and this counting unit is electrically connected, and is one preset illumination condition, a gradual change illumination condition or a setting illumination condition according to the illumination condition that this power-off time controls this light emitting module.

2. lighting device as claimed in claim 1, it is characterized in that, this driver module also comprises a detecting unit, and itself and this oscillating unit is electrically connected, wherein this detecting unit detects a frequency of this alternating current, for this oscillating unit according to this clock pulse of this frequency correction.

3. lighting device as claimed in claim 1, it is characterized in that, this driver module also comprises a rectification unit, and it is electrically connected to this alternating current, in order to this alternating current is converted to a direct current, to drive this light emitting module.

4. lighting device group as claimed in claim 1, it is characterized in that, this control unit is also greater than a special time at this power-off time, control this illumination condition and switch to this default illumination condition, and be less than this special time at this power-off time, control this illumination condition and switch to this gradual change illumination condition maybe this setting illumination condition.

5. lighting device as claimed in claim 4, it is characterized in that, this driver module also comprises a memory cell, its and this control unit electric connection, to switch to a corresponding data of this setting illumination condition in order to store this illumination condition from this gradual change illumination condition.

6. lighting device as claimed in claim 4, it is characterized in that, this driver module also comprises a memory cell, itself and this control unit is electrically connected, to switch to a corresponding data of this setting illumination condition from this gradual change illumination condition in order to store this illumination condition, wherein this control unit is also greater than this special time at this power-off time, removes this corresponding data of this memory cell.

7. lighting device as claimed in claim 1, it is characterized in that, this light emitting module has at least one light-emitting diode.

8. a driver module, in order to drive a light emitting module of an alternating current lighting device, this driver module comprises:

One oscillating unit, in order to produce a clock pulse;

One counting unit, itself and this oscillating unit is electrically connected, in order to calculate the power-off time of a two-section switch between twice switching according to this clock pulse; And

One control unit, itself and this counting unit is electrically connected, and is one preset illumination condition, a gradual change illumination condition or a setting illumination condition according to the illumination condition that this power-off time controls this light emitting module.

9. driver module as claimed in claim 8, it is characterized in that, this light emitting module has at least one light-emitting diode.

10. driver module as claimed in claim 8, is characterized in that, also comprise a detecting unit, and itself and this oscillating unit is electrically connected, and wherein this detecting unit detects a frequency of this alternating current, for this oscillating unit according to this clock pulse of this frequency correction.

11. driver modules as claimed in claim 8, it is characterized in that, also comprise a rectification unit, it is electrically connected to this alternating current, in order to this alternating current is converted to a direct current, to drive this light emitting module.

12. driver modules as claimed in claim 8, it is characterized in that, this control unit is also greater than a special time at this power-off time, control this illumination condition and switch to this default illumination condition, and be less than this special time at this power-off time, control this illumination condition and switch to this gradual change illumination condition maybe this setting illumination condition.

13. driver modules as claimed in claim 12, is characterized in that, also comprise a memory cell, and itself and this control unit is electrically connected, and to switch to a corresponding data of this setting illumination condition in order to store this illumination condition from this gradual change illumination condition.

14. driver modules as claimed in claim 12, it is characterized in that, also comprise a memory cell, itself and this control unit is electrically connected, to switch to a corresponding data of this setting illumination condition from this gradual change illumination condition in order to store this illumination condition, wherein this control unit is also greater than this special time at this power-off time, removes this corresponding data of this memory cell.