[19]
`
`State Intellectual Property Office of The People’s Republic of China
`
`[51]
`
`Int. Cl7
`
`[12]
`
`Utility Model Patent
`
`[21]
`
`ZL Patent No.: 02215396.9
`
`F21S 9/02
`F21S 10/02 F21S 4/00
`F21W131:00, F21Y101:02
`
`Date of Publication: March 26, 2003
`
`[11]
`
`Publication Number: CN 2541713Y
`
`Date of Application:
`
`January 28, 2002
`
`[74]
`
`Patent Agency:
`
`Application Number:
`
`02215396.9
`
`Hangzhou Qiushi Patent Office
`Co., Ltd.
`
`[45]
`
`[22]
`
`[21]
`
`[73]
`
`Name of Patentee:
`
`Address of Patentee:
`
`[72]
`
`Designer(s):
`
`Representative:
`
`YU Yuancheng
`
`Hangzhou Zhenqi Electrical
`Equipment Co., Ltd.
`Haitang Road East
`Xinjia Township
`Qianjiang
`Hangzhou
`Economic Development Zone
`Xiaoshan District
`Hangzhou City 311203
`Zhejiang Province
`China
`
`XU Zhihua; ZHU Xianzhong;
`HAN Lijian
`
`[54]
`
`[57]
`
`Name of Utility Model:
`
`Color-Changing Solar Powered Lamp
`
`Abstract:
`The present utility model relates to a color-changing solar
`powered lamp comprising a lamp housing, a lighting control
`circuit and a light emitting circuit, wherein the lighting
`control circuit
`includes a storage cell voltage detection
`circuit, a solar cell voltage detection circuit and a timer
`circuit, thereby realizing timed switching off of the lamp and
`optimal selection of the light emitting time of the illuminant,
`and thus making it suitable for use in various places and
`environments
`and
`capable
`of
`effectively
`preventing
`over-discharge of storage cell.
`
`Jiawei et al. Exhibit 1014 Page 1
`
`

`
`Claims
`
`1. A color-changing solar powered lamp, comprising a lamp housing, a lighting control circuit
`
`and a light emitting circuit, the lamp housing including a header cover, solar panels, an upper lid, a
`
`lower lid, a transparent lampshade, a reflective board, a control circuit board, a lamp bracket, a lamp
`
`base, a key switch, the lighting control circuit including a power supply circuit, a control circuit and
`
`an implementer circuit, and the output terminal of the lighting control circuit being connected to the
`
`input terminal of the light emitting circuit, characterized in that: the key switch (14) is installed on
`
`the upper lid (3); the anode of solar cell 1DC1 is connected to a resistor 2R5 and a triode 2BG2, the
`
`collector electrode of the triode 2BG2 is connected to the input pin 4 of a single chip microprocessor
`
`2IC1, the anode of storage cell 1DC2 is connected to a stabilivolt 2WD1, a resistor 2R1, a resistor 2R2
`
`and a triode 2BG1, and the collector electrode of the triode 2BG2 is connected to the input pin 3 of
`
`the single chip microprocessor 2IC1; the anode of storage cell 1DC2 is connected to a resistor 2R6, a
`
`resistor 2R7 and the input pin 2 of the single chip microprocessor 2IC1.
`
`2. The color-changing solar powered lamp as defined in claim 1, characterized in that the solar
`powered lamp is provided with a color-changing illuminant board (5) connected to an illuminant
`bracket (4) and mounted to the bottom planar surface of the upper lid (3), and the curved surface
`reflective board (8) is mounted on the top planar surface of the upper lid (9) corresponding to the
`color-changing illuminant board (5).
`
`3. The color-changing solar powered lamp as defined in claim 1, characterized in that the light
`emitting circuit comprises three groups of blue, green and red light-emitting diodes 4LED1~4LED12,
`4LED13~4LED24 and 4LED25~4LED44, which are first connected in series and later connected in
`parallel.
`
`Jiawei et al. Exhibit 1014 Page 2
`
`

`
`Description
`
`Color-changing Solar Powered Lamp
`
`FIELD
`
`The present utility model relates to solar powered lamps and, more particularly, to an outdoor
`
`color-changing solar powered lamp capable of self control and timed switching on and off.
`
`BACKGROUND
`
`At present, solar powered lamps whose lighting and extinguishment are controlled by means of
`
`light intensity are increasingly emerging, and as the storage cells of these solar powered lamps are
`
`controlled merely by the intensity of sunlight, they are not able to self adjust the timing of their
`
`switching on and off and this results in their being lighted all night long or in cloudy days, causing
`
`over-discharge of storage cells, shorter cell lifespan and energy wastage.
`
`SUMMARY
`
`Accordingly, the present utility model aims to provide a color-changing solar powered lamp
`
`which can be automatically lighted or extinguished according to light intensity and whose timing of
`
`switching off can be selected.
`
`To this end, the present utility model adopts the following technical scheme: the color-changing
`
`solar powered lamp comprises a lamp housing, a lighting control circuit and a light emitting circuit.
`
`The lamp housing includes a header cover, solar panels, an upper lid, an illuminant bracket, an
`
`illuminant board, a threaded pipe, a transparent lampshade, a reflective board, a lower lid, a control
`
`circuit board, a lamp stand, a storage cell rack, a lamp base and a key switch; the lamp stand is
`
`connected to the lamp base and the lower lid, the transparent lampshade and the threaded pipe are
`
`Jiawei et al. Exhibit 1014 Page 3
`
`

`
`connected to the lower lid and the upper lid respectively, the solar panels and the illuminant bracket
`
`are provided respectively above and beneath the upper lid, the illuminant board is mounted on the
`
`illuminant bracket, the circular curved header cover is mounted on the upper lid, the reflective board
`
`is mounted on the lower lid, the storage cell rack is mounted in the lamp base, the key switch is
`
`mounted peripherally on the upper lid, the control circuit board is mounted on the lower lid, the
`
`lighting control circuit is mounted on the control circuit board, the lighting control circuit includes a
`
`power supply circuit, a control circuit and an implementer circuit, and the output terminal of the
`
`lighting control circuit is connected to the input terminal of the light emitting circuit mounted on the
`
`illuminant bracket. The lighting control circuit is provided with a storage cell voltage detection
`
`circuit, a solar cell voltage detection circuit and a timing circuit; the storage cell voltage detection
`
`circuit is provided with a key switch, a stabilivolt, a triode and a bias current protection resistor; the
`
`anode of the solar cell is connected to the stabilivolt, the triode and the bias current protection
`
`resistor,
`
`the output
`
`terminal of the triode is connected to the input pin of a single chip
`
`microprocessor; the solar cell voltage detection circuit is provided with a triode and bias current
`
`protection resistors, the anode of the storage cell is connected to the triode through a bias current
`
`protection resistor, the output terminal of the triode is connected to the input pin of a single chip
`
`microprocessor; the timing circuit is provided with a key switch and a bias current protection resistor,
`
`the key switch is connected to the anode of the storage cell and the output terminal thereof is
`
`connected to the input pin of the single chip microprocessor of the control circuit. The output
`
`terminal of the single chip microprocessor is connected to the input terminal of the implementer
`
`circuit, and the light emitting circuit is actuated by the implementer circuit to emit light.
`
`The technical effects generated by the present utility model are as follows: when the voltage of
`
`the storage cell is lower than a set value, the triode of the storage cell voltage detection circuit of the
`
`Jiawei et al. Exhibit 1014 Page 4
`
`

`
`lighting control circuit is not electrified, causing the single chip microprocessor to input high power
`
`level to cease delayed shutdown, so as to avoid lighting the lamp all night long, prevent over
`
`discharge of the storage cell and prolong the lifespan. The solar cell voltage detection circuit
`
`controls the light emitting circuit to stop work (emitting light) at dawn, thereby overcoming the
`
`disadvantage of uncontrollability caused by artificial control and saving manpower and resources.
`
`The timing circuit is capable of lighting or extinguishing the light emitting circuit (illuminant)
`
`within set time and more rationally selecting the light emitting time of the illuminant, and is thus
`
`suitable for use in open spaces and various outdoor environments. The present utility model uses a
`
`key switch to provide convenience for transportation, storage and installation, and it also prevents
`
`arbitrary switching.
`
`BRIEF DESCRIPTION OF THE DRAWINGS
`
`The present utility model is further illustrated with reference to the accompanying drawings
`
`and a preferred embodiment thereof.
`
`Figure 1 is a schematic diagram of the present utility model.
`
`Figure 2 is a circuit schematic of the present utility model.
`
`In the figures, 1 denotes header cover, 2 denotes solar panels, 3 denotes upper lid, 4 denotes
`
`illuminant bracket, 5 denotes color-changing illuminant board, 6 denotes transparent lampshade, 7
`
`denotes threaded rod, 8 denotes reflective board, 9 denotes lower lid, 10 denotes control circuit
`
`board, 11 denotes lamp housing, 12 denotes storage cell rack, 13 denotes lamp base, and 14 denotes
`
`key switch.
`
`DETAILED DESCRIPTION
`
`As shown in Figure 1, the lamp housing 11 of the present utility model is clamped to the lamp
`
`base 13, the top of the lamp housing 11 is connected to the lower lid 9 by screws, the lower lid 9 and
`
`the upper lid 3 are connected by the threaded pipe7 disposed therebetween, the circular transparent
`
`Jiawei et al. Exhibit 1014 Page 5
`
`

`
`lampshade 6 is clamped circumferentially to the lower lid 9, the upper lid 3 is fixedly connected to
`
`the PC header cover 1 by screws, the solar panels 2 (IDC1) are glued to the upper lid 3, the
`illuminant bracket 4 is mounted to the bottom planar surface of the upper lid 3, the color-changing
`
`illuminant board 5 is mounted on the illuminant bracket 4 and a lighting emitting circuit is mounted
`
`on the color-changing illuminant board 5, the curved surface reflective board 8 is mounted on the
`
`top planar surface of the upper lid 9 corresponding to the color-changing illuminant board 5, the
`
`storage cell rack 12 is mounted on the lamp base 13, the storage cell 1DC2 is clamped on the storage
`cell rack 12, and the control circuit board 10 is mounted on the lower lid 9.
`
`The lighting control circuit of the present utility model is mounted on the control circuit board
`
`10: the electrical energy generated by the solar cell 1DC1 of the power supply circuit I under
`sunlight passes through 1D1, key switch (1K1) 14 to electrify the storage cell 1DC2. Another path
`is for the detection circuit detecting voltage change in the solar cell 1DC1 caused by sunlight
`brightness change. Specifically, the anode of the solar cell 1DC1 is connected through the resistor
`2R5 to the triode 2BG2, and the collector electrode thereof is connected to the input pin 4 of the
`single chip microprocessor 2IC2. The electrical energy of the storage cell 1DC2 passes through 1R2,
`1WD1, C1 and 1C2, and provides decoupling output voltage of 5V for the working voltage of the
`control circuit II. Another path is for the detection circuit detecting storage cell voltage, i.e. the
`
`anode of the storage cell is connected through A and B of the key switch (1K1)14, bias current
`resistors 2R1 and 2R2 to the triode 2BG1, and the collector electrode thereof is connected to the input
`pin 3 of the single chip microprocessor 2IC1. Yet another path is for the timing circuit where the
`anode of the storage cell is connected to the input pin 2 of the single chip microprocessor 2IC1
`through A, B and C of the key switch (1K1)14, resistors 2R6 and 2R7. When A, B and C of the key
`switch (1K1)14 are not connected, the lamp is extinguished. When A and B are connected, the
`lamp is timed and given a set value, which is 6 hours for the present utility model. When A, B and
`
`C are connected, the lamp is timed with another set value, i.e. 10 hours. The fourth path is for the
`
`Jiawei et al. Exhibit 1014 Page 6
`
`

`
`input
`
`terminal of
`
`the working voltage of
`
`the light emitting circuit
`
`IV.
`
`The single chip
`
`microprocessor 2IC1 of the control circuit II outputs a signal to control the implementer circuit III,
`with pins 5, 4 and 7 set as output and pin 2 is connected through the resistor 2R6 to the key switch
`(1K1)14 to control the lamp switch off time. Pin 3 is connected to the collector electrode 2BG1 of
`the storage cell voltage detection circuit, and it is set that when the voltage of the storage cell 1DC2
`is greater than 11V, 2WD1 is electrified and pin 3of 2IC1 is pulled to low power level; when the
`voltage is smaller than 11V, 2WD1 is not electrified and 2BG1 is also not electrified, and pin 3of
`2IC1 is pulled to high power level. Pin 4 is connected to the collector electrode 2BG2 of voltage
`detection circuit of the solar cell 1DC1, so that 2BG2 is electrified and pin 4 of 2IC1 is pulled to low
`power level when a certain intensity of sunlight is available and the voltage of the solar cell 1DC1 is
`greater than the set voltage 0.7V; and 2BG2 is not electrified and pin 4 of 2IC1 is pulled to high
`power level when there is insufficient sunlight and the voltage of the solar cell 1DC1 is smaller than
`the set voltage 0.7V. The set control process of the single chip microprocessor 2IC1 of the control
`circuit II is as follows: start to identify the power level of pin 4, when it is low power level (at dawn),
`
`continue to identify repeatedly; when it is high power level (when dark), wait for 30 seconds before
`
`identifying once again, and prevent accidental or intentional
`
`light obstruction to eliminate
`
`misjudgment; when it is low power level, return to the initial state, and if it is high power level,
`
`identify pin 2; when it is high power level, then repeat 1200 cycles before switching off the lamp, i.e.
`
`one cycle is 30 seconds, total time is 10 hours; when it is low power level, then repeat 720 cycles
`
`before switching off the lamp, i.e. one cycle is 30 seconds, total time is 6 hours. After the
`
`completion of the control process, the color-changing process is entered: output +5V high power
`
`level from pin 5 of 2IC1 and sustain for 5 seconds, output high power level simultaneously from pin
`5 and pin 6 and sustain for 5 seconds, output high power level from pin 6 and sustain for 5 seconds,
`
`output high power level simultaneously from pin 6 and pin 7 and sustain for 5 seconds, output high
`
`power level from pin 7 and sustain for 5 seconds, output high power level simultaneously from pin 5
`
`and pin 7 and sustain for 5 seconds, return to the initial state of the color-changing process and
`
`Jiawei et al. Exhibit 1014 Page 7
`
`

`
`repeat (one cycle takes 30 seconds), until completing the number of cycles to switch off the lamp.
`
`After switching off the lamp, judge the power level of pin 4 (wait until dawn) and if it is high power
`
`level, continue to judge repeatedly, and when it is low power level, wait for 30 seconds before
`
`judging again so as to prevent misjudgment; if it is high power level, return to the initial state, if it is
`
`low power level, return to the initial state of the process; in each 5-second duration when changing
`
`color, separately judge the power levels of pin 3 and pin 4 once, if pin 4 has a low power level (at
`
`dawn), switch off the lamp and return to the initial state of the process; if pin 3 has a high power
`
`level (solar cell is weak), stop the time delay; after switching off the lamp, judge the power level of
`
`pin 4 and wait until dawn, and if it is low power level, return to the initial state of the control
`
`process.
`
`The implementer circuit III comprises 3R1~3R3 and 3BG1~3BG3, and it actuates the light
`emitting circuit
`IV to work after magnifying the signal outputted from the single chip
`
`microprocessor 2IC1 of the control circuit II.
`
`The light emitting circuit IV adopts three primary colors and comprises blue light-emitting
`
`diodes 4LED1~4LED12, green light-emitting diodes 4LED13~4LED24, red light-emitting diodes
`4LED25~4LED44 and current limiting resistors 4R1~4R12. As the tubes have different voltages, the
`green LED tubes and the blue LED tubes are connected in series in threes, the red LED tubes are
`
`connected in series in fives, and all the green LED tubes, blue LED tubes and red LED tubes
`
`connected in series in different number are then connected in parallel in four groups each. When
`
`LED tubes of a certain color are lighted, they display their respective colors. When blue LED
`
`tubes and red LED tubes are simultaneously lighted, purple is displayed; when blue LED tubes and
`
`green LED tubes are simultaneously lighted, pea green is displayed; and when red LED tubes and
`
`green LED tubes are simultaneously lighted, orangey yellow is displayed.
`
`Jiawei et al. Exhibit 1014 Page 8
`
`

`
`Drawings
`
`Figure 1
`
`Jiawei et al. Exhibit 1014 Page 9
`
`

`
`Figure 2
`
`Jiawei et al. Exhibit 1014 Page 10