CN208186177U - A kind of hotel's projection lamp - Google Patents
A kind of hotel's projection lamp Download PDFInfo
- Publication number
- CN208186177U CN208186177U CN201820905994.5U CN201820905994U CN208186177U CN 208186177 U CN208186177 U CN 208186177U CN 201820905994 U CN201820905994 U CN 201820905994U CN 208186177 U CN208186177 U CN 208186177U
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- Prior art keywords
- resistance
- triode
- light source
- brightness
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- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B20/00—Energy efficient lighting technologies, e.g. halogen lamps or gas discharge lamps
- Y02B20/40—Control techniques providing energy savings, e.g. smart controller or presence detection
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- Circuit Arrangement For Electric Light Sources In General (AREA)
Abstract
The utility model discloses a kind of hotel's projection lamps, including external shell and internal circuit；The external shell includes lamp housing and lamp bracket；The both ends of the lamp bracket are connect with lamp housing rotation, and several heat release holes are provided on the lamp housing；Photo resistance RL is additionally provided with above the lamp housing；The internal circuit includes power supply device, brightness detection control circuit, brightness regulating circuit, and the power output end of the power supply device is connected with brightness detection control circuit, and the output end of brightness detection control circuit is connected with brightness regulating circuit.The utility model detects the light source around brightness regulation lamp using the control mode of superimposed current and superposition light source, realizes the brightness of the light source automatically generated, while can be realized without expensive single-chip microcontroller or processor, cost is relatively low.
Description
Technical field
The utility model relates to projection field more particularly to a kind of hotel's projection lamps.
Background technique
Projection lamp, also known as imaging lamp are a kind of electrical equipments that can be projected image or text on ground or wall.It throws
Shadow lamp can be imaged on any picture in a manner of light on any lighttight medium (attached on floor on such as indoor ceiling
On close wall), the existing dynamic effect of the picture of projection, it is easy to which the eye for attracting common people builds warm reconciliation to interior
Gas is put forth energy, while also can be the newest design of businessman, and newest sales promotion information, newest commodity are presented to common people.Such as to exhibition and
LOGO picture is played by promotion producer, or gives each room flap valve trade mark in hotel, or to coffee shop and the Condom of bar class
It is projected out various characteristics picture on the ground or on wall, or gets various figures to brand shop to advocate company.However it is existing
The projection lamp of technology is all single brightness, the light luminance projected can not be adjusted, so that drop shadow effect is not
It is good.
Utility model content
The purpose of the utility model is to overcome the deficiencies in the prior art, provide a kind of hotel's projection lamp.
The purpose of this utility model is achieved through the following technical solutions: a kind of hotel's projection lamp, including outside
Shell and internal circuit；
The external shell includes lamp housing and lamp bracket；The both ends of the lamp bracket are connect with lamp housing rotation, the lamp
Several heat release holes are provided on shell；Photo resistance RL is additionally provided with above the lamp housing；
The internal circuit includes power supply device, brightness detection control circuit, brightness regulating circuit, the power supply dress
The power output end set is connected with brightness detection control circuit, and brightness detects the output end of control circuit and brightness regulating circuit connects
It connects；
The described brightness detection control circuit includes resistance R2, resistance R3, resistance R4, resistance R5, triode Q1 and photosensitive
Resistance RL, the power output end of the power supply device emitter with one end of resistance R3, one end of resistance R2 and triode Q1 respectively
Connection, the other end of resistance R3 connect with one end of resistance R5 and brightness regulating circuit respectively, the other end of resistance R5 and
The collector of triode Q1 connects, and the other end of resistance R2 is connect with one end of the base stage of triode Q1 and resistance R4 respectively,
The other end of resistance R4 is connect with one end of photo resistance RL, the other end ground connection of photo resistance RL；
The brightness regulating circuit includes first light source L1s, second light source L2s, resistance R6, resistance R7, resistance R8, electricity
The resistance value for hindering R9, resistance R10, triode Q2 and triode Q3, resistance R9 is greater than resistance R6, resistance R7, resistance R8 and resistance R10
Resistance value；The other end of resistance R3 respectively with one end of first light source L1s, one end of resistance R9, first light source L2s one end
Connection, the other end of first light source L1s connect with resistance R6, the other end of resistance R6 respectively with one end of resistance R7 and electricity
One end connection of R8, the other end ground connection of resistance R7 are hindered, the other end of resistance R8 is connect with the base stage of triode Q2, resistance
R9 other end is connect with the base stage of the collector of triode Q2 and triode Q3 respectively, and the emitter of triode Q2 passes through resistance
R10 ground connection, the other end of second light source L2s are connect with the collector of triode Q3, the emitter ground connection of triode Q3；Its
In, the brightness of first light source L1s is greater than the brightness of second light source L2s.
Further, the triode Q1 is PNP type triode, and triode Q2 and triode Q3 are NPN type triode.
Further, the power supply device includes button power supply group, and the button power supply group provides 6.6V voltage；Knob
The power output end of button power supply group is connect with the emitter of one end of resistance R3, one end of resistance R2 and triode Q1 respectively.
Further, key switch is additionally provided between the button power supply group and brightness detection control circuit
button。
Further, the power supply device includes attaching plug P1, transformer, full bridge rectifier, resistance R1 and steady
Diode DW is pressed, wherein attaching plug P1 inputs 220V alternating current, the end L of attaching plug P1 and N-terminal two with transformer respectively
Input terminal connection, the end the K sky of attaching plug P1 connect；Two output ends of transformer are inputted with two of full bridge rectifier respectively
End connection, one of output end ground connection of full bridge rectifier, another output end are connect with one end of resistance R1, resistance
The other end of R1 is connect with the cathode of zener diode DW and brightness detection control circuit respectively, the anode of zener diode DW
Ground connection；The power output end of resistance R1 is connect with the emitter of one end of resistance R3, one end of resistance R2 and triode Q1 respectively.
Further, first light source L1s and second light source L2s are connected in series by multiple light sources L.
The beneficial effects of the utility model are:
(1) the utility model is using superimposed current and the control mode for being superimposed light source, to the light source around brightness regulation lamp
It is detected, realizes the brightness of the light source automatically generated, while can be realized without expensive single-chip microcontroller or processor, cost
It is lower.
(2) the utility model provide two ways power supply, one of which be button power supply button power supply configuration so that
It is convenient for carrying when this brightness regulation lamp is applied to projection advertisement and mobile, in addition button power supply is also convenient for changing；Another is
Mains-supplied, powered stable are carried out by way of plug.
Detailed description of the invention
Fig. 1 is the utility model external shell schematic diagram；
Fig. 2 is the internal circuit connection schematic diagram of the one of embodiment of the utility model；
Fig. 3 is the internal circuit connection schematic diagram of the utility model another embodiment；
In figure, 1- lamp housing, 2- lamp bracket, 3- heat release hole, 4- photo resistance RL.
Specific embodiment
The technical solution of the utility model, but the protection scope of the utility model are described in further detail with reference to the accompanying drawing
It is not limited to as described below.
As shown in Figure 1, a kind of hotel's projection lamp, including external shell and internal circuit；
The external shell includes lamp housing 1 and lamp bracket 2；The both ends of the lamp bracket 2 and lamp housing 1 are rotatablely connected, described
Lamp housing 1 on be provided with several heat release holes 3；Photo resistance RL4 is additionally provided with above the lamp housing 1；
The internal circuit includes power supply device, brightness detection control circuit, brightness regulating circuit, the power supply dress
The power output end set is connected with brightness detection control circuit, and brightness detects the output end of control circuit and brightness regulating circuit connects
It connects；
The described brightness detection control circuit includes resistance R2, resistance R3, resistance R4, resistance R5, triode Q1 and photosensitive
Resistance RL, the power output end of the power supply device emitter with one end of resistance R3, one end of resistance R2 and triode Q1 respectively
Connection, the other end of resistance R3 connect with one end of resistance R5 and brightness regulating circuit respectively, the other end of resistance R5 and
The collector of triode Q1 connects, and the other end of resistance R2 is connect with one end of the base stage of triode Q1 and resistance R4 respectively,
The other end of resistance R4 is connect with one end of photo resistance RL4, the other end ground connection of photo resistance RL4；
The brightness regulating circuit includes first light source L1s, second light source L2s, resistance R6, resistance R7, resistance R8, electricity
The resistance value for hindering R9, resistance R10, triode Q2 and triode Q3, resistance R9 is greater than resistance R6, resistance R7, resistance R8 and resistance R10
Resistance value；The other end of resistance R3 respectively with one end of first light source L1s, one end of resistance R9, first light source L2s one end
Connection, the other end of first light source L1s connect with resistance R6, the other end of resistance R6 respectively with one end of resistance R7 and electricity
One end connection of R8, the other end ground connection of resistance R7 are hindered, the other end of resistance R8 is connect with the base stage of triode Q2, resistance
R9 other end is connect with the base stage of the collector of triode Q2 and triode Q3 respectively, and the emitter of triode Q2 passes through resistance
R10 ground connection, the other end of second light source L2s are connect with the collector of triode Q3, the emitter ground connection of triode Q3；Its
In, the brightness of first light source L1s is greater than the brightness of second light source L2s.
The use principle of the utility model is as follows:
This brightness regulation lamp is placed in ground by lamp bracket 2, and is rotated lamp housing 1 by lamp bracket 2, is adjusted to best
Position, several heat release holes 3 being arranged on lamp housing 1 are for radiating；
The output electric current of the current output terminal (exporting to brightness regulating circuit) of power supply device is folded by the electric current of two branches
Add to obtain, wherein the first branch for being routed through resistance R3 obtains, and an other routing includes second of photo resistance RL4
Rood arrives, and when the light around brightness regulation lamp relatively strong (ambient enviroment is relatively bright), the resistance value of photo resistance RL4 becomes smaller, and makes
It obtains the electric current that the branch generates to increase, so that the electric current of superposition increases；And weaker (the surrounding ring of light around projection lamp
Border is darker) when, the resistance value of photo resistance RL4 becomes larger, so that the electric current that the branch generates reduces (can down to ignore), from
And the electric current of superposition is reduced.
Brightness regulating circuit is used to detect the size of current of control circuit input according to brightness to first light source L1s and second
The light source that light source L2s superposition generates carries out bright adjusting, specifically: (1) when the light around projection lamp is stronger, examining from brightness
The size of current for surveying control circuit input is larger, to first light source L1s, resistance R9 and second light source L2s is at this time high electricity
Pressure, since the resistance value of resistance R9 is greater than the resistance value of resistance R6, resistance R7, resistance R8 and resistance R10, the voltage of first light source L1s
By branching to the branch of resistance R8 and the branch of resistance R7 after first light source L1s, wherein since resistance R7 is grounded so that first
Light source L1s open and carry out it is luminous, and at this time triode Q2 collector and emitter short circuit so that resistance R9's branches to Q2
The voltage of collector is greater than the voltage of triode Q3 base stage, so that the collector of triode Q3 and emitter are opened a way, and further
So that second light source L2s does not work.(2) during the light around projection lamp weakens gradually, brightness detects control circuit
The superimposed current of generation also reduces gradually, and the voltage of triode Q2 base stage is not high voltage, and triode Q2 is worked normally, and at this time three
The voltage of pole pipe Q3 base stage is not low-voltage, and triode Q3 is also worked normally, and first light source L1s and second light source L2s are equal at this time
It opens and shines, and since the voltage of input reduces, and the brightness of second light source L2s is less than the brightness of first light source L1s, folds
The light source added also slowly reduces brightness；(3) light around projection lamp is weaker so that the voltage generated is lower than first light source
When the operating voltage of L1s, first light source L1s does not work, while the voltage of triode Q2 base stage is also low-voltage, with triode Q3
The voltage of base stage be opposite high voltage, triode Q2 do not work, and triode Q3 collector and emitter short circuit so that from
The electric current of brightness detection control circuit input only flows to second light source L2s, and second light source L2s works, simultaneously because input
Voltage reduce, the light source of superposition (brightness that first light source L1s is generated almost is considered as not have) also slowly reduces brightness.
Preferably, in the above-described embodiments, the first light source L1s is the light source for slightly having yellow light, described second
Light source L2s is white light source, so that generating in the case where becoming clear around projection lamp with coloured light, so that user sees
It is clearer.
Preferably, in the present embodiment, as shown in Figures 2 and 3, the triode Q1 is PNP type triode, triode
Q2 and triode Q3 is NPN type triode.
Preferably, described in one of the embodiments, as shown in Fig. 2, the power supply device includes button power supply group
Button power supply group provide 6.6V voltage；The power output end of button power supply group respectively with one end of resistance R3, resistance R2 one
End is connected with the emitter of triode Q1.
Preferably, in this embodiment, it is additionally provided between the button power supply group and brightness detection control circuit
Key switch button.Key switch button is used to open and close the voltage of button power supply offer, when user needs to open
When opening projection lamp, key switch button is just pressed.
Preferably, in another embodiment, as shown in figure 3, the power supply device includes attaching plug P1, transformation
Device, full bridge rectifier, resistance R1 and zener diode DW, wherein attaching plug P1 inputs 220V alternating current, the L of attaching plug P1
End and N-terminal are connect with two input terminals of transformer respectively, and the end the K sky of attaching plug P1 connects；Two output ends of transformer point
It is not connect with two input terminals of full bridge rectifier, one of output end ground connection of full bridge rectifier, another is defeated
Outlet is connect with one end of resistance R1, and the other end of resistance R1 is controlled with the cathode of zener diode DW and brightness detection respectively
Circuit connection, the plus earth of zener diode DW；The power output end of resistance R1 respectively with one end of resistance R3, resistance R2
One end is connected with the emitter of triode Q1.
When P1 plug input socket, transformer inputs output to full bridge rectifier after 220V alternating current carries out transformation and carries out bridge
Formula filtering, and exported by resistance R1 to brightness and detect control circuit, and zener diode DW is used to carry out surely output voltage
Press operation.
Preferably, in the present embodiment, first light source L1s and second light source L2s are connected in series by multiple light sources L, are made
The light source effect that must be generated is more preferable.
The utility model is to be described by embodiment, but be not construed as limiting to the utility model, practical referring to this
Novel description, other variations of the disclosed embodiments, is such as readily apparent that the professional person of this field, such
Variation should belong within the scope of the utility model claims restriction.
Claims (6)
1. a kind of hotel's projection lamp, including external shell and internal circuit；It is characterized by:
The external shell includes lamp housing and lamp bracket；The both ends of the lamp bracket are connect with lamp housing rotation, on the lamp housing
It is provided with several heat release holes；Photo resistance RL is additionally provided with above the lamp housing；
The internal circuit include power supply device, brightness detection control circuit, brightness regulating circuit, the power supply device
Power output end is connected with brightness detection control circuit, and the output end of brightness detection control circuit is connected with brightness regulating circuit；
The brightness detection control circuit includes resistance R2, resistance R3, resistance R4, resistance R5, triode Q1 and photo resistance
RL, the power output end of power supply device are connect with the emitter of one end of resistance R3, one end of resistance R2 and triode Q1 respectively,
The other end of resistance R3 is connect with one end of resistance R5 and brightness regulating circuit respectively, the other end and triode of resistance R5
The collector of Q1 connects, and the other end of resistance R2 is connect with one end of the base stage of triode Q1 and resistance R4 respectively, resistance R4
Other end connect with one end of photo resistance RL, the other end of photo resistance RL ground connection；
The brightness regulating circuit includes first light source L1s, second light source L2s, resistance R6, resistance R7, resistance R8, resistance
The resistance value of R9, resistance R10, triode Q2 and triode Q3, resistance R9 are greater than resistance R6, resistance R7, resistance R8 and resistance R10
Resistance value；The other end of resistance R3 connects with one end of one end of first light source L1s, one end of resistance R9, first light source L2s respectively
Connect, the other end of first light source L1s is connect with resistance R6, the other end of resistance R6 respectively with one end of resistance R7 and resistance
One end of R8 connects, and the other end ground connection of resistance R7, the other end of resistance R8 is connect with the base stage of triode Q2, resistance R9
Other end is connect with the base stage of the collector of triode Q2 and triode Q3 respectively, and the emitter of triode Q2 passes through resistance
R10 ground connection, the other end of second light source L2s are connect with the collector of triode Q3, the emitter ground connection of triode Q3；Its
In, the brightness of first light source L1s is greater than the brightness of second light source L2s.
2. a kind of hotel's projection lamp according to claim 1, it is characterised in that: the triode Q1 is positive-negative-positive three
Pole pipe, triode Q2 and triode Q3 are NPN type triode.
3. a kind of hotel's projection lamp according to claim 1, it is characterised in that: the power supply device includes button electricity
Source group, the button power supply group provide 6.6V voltage；The power output end of button power supply group respectively with one end of resistance R3, electricity
One end of resistance R2 is connected with the emitter of triode Q1.
4. a kind of hotel's projection lamp according to claim 3, it is characterised in that: in the button power supply group and brightness
Key switch button is additionally provided between detection control circuit.
5. a kind of hotel's projection lamp according to claim 1, it is characterised in that: the power supply device includes that power supply is inserted
Head P1, transformer, full bridge rectifier, resistance R1 and zener diode DW, wherein attaching plug P1 inputs 220V alternating current, power supply
The end L of plug P1 and N-terminal are connect with two input terminals of transformer respectively, and the end the K sky of attaching plug P1 connects；Two of transformer
Output end is connect with two input terminals of full bridge rectifier respectively, one of output end ground connection of full bridge rectifier, separately
An outer output end is connect with one end of resistance R1, the other end of resistance R1 respectively with the cathode of zener diode DW and brightness
Detect control circuit connection, the plus earth of zener diode DW；The power output end of resistance R1 respectively with one end of resistance R3,
One end of resistance R2 is connected with the emitter of triode Q1.
6. a kind of hotel's projection lamp according to claim 1, it is characterised in that: first light source L1s and second light source L2s
It is connected in series by multiple light sources L.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820905994.5U CN208186177U (en) | 2018-06-12 | 2018-06-12 | A kind of hotel's projection lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201820905994.5U CN208186177U (en) | 2018-06-12 | 2018-06-12 | A kind of hotel's projection lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN208186177U true CN208186177U (en) | 2018-12-04 |
Family
ID=64428285
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201820905994.5U Expired - Fee Related CN208186177U (en) | 2018-06-12 | 2018-06-12 | A kind of hotel's projection lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN208186177U (en) |
-
2018
- 2018-06-12 CN CN201820905994.5U patent/CN208186177U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20181204 Termination date: 20190612 |
|
| CF01 | Termination of patent right due to non-payment of annual fee |