Energy-saving desk lamp
Technical field
The utility model relates to home lighting light fixture field, relates more specifically to a kind of energy-saving desk lamp.
Background technology
Desk lamp is a kind of household electrical appliance that are used for throwing light on during people live.It generally is divided into two kinds, and a kind of is column, and a kind of have a clip.Its operation principle mainly is that light is concentrated in the pocket, concentrates light, is convenient to working and learning.The bulb that general desk lamp is used is incandescent lamp or energy-saving bulb.The desk lamp that has also has emergency function, is not used for meeting an urgent need when having electric lighting when being used to have a power failure, and the small and exquisite place of putting any needs of desk lamp, so its use is also extensive all the more.
Desk lamp commonly used now generally comprises: lamp socket, arm, light-emitting device and internal control circuit, described light-emitting device is electrically connected with described internal control circuit and fixedlys connected with an end of described arm, the other end of described arm is fixedlyed connected with described lamp socket, and the bottom face of described lamp socket is a planar structure so that whole described desk lamp places on the mounting table.And, common described light-emitting device comprises lampshade and light emitting source, described light emitting source is electrically connected with described internal control circuit, when described desk lamp under the energising situation, described internal control circuit controls the work of described light emitting source so that it realizes illuminating effect on demand, described lampshade can protect described light emitting source to avoid extraneous damage, and also can prevent described desk lamp in use the user touch light emitting source accidentally and scald; Also be provided with knob or push switch on described lamp socket, described switch is electrically connected with the internal control circuit of desk lamp, thereby described desk lamp is begun or quits work by this switch.
But above-mentioned desk lamp makes described light emitting source start or stop electrified light emitting by described switch, and the luminous intensity of described light emitting source is unadjustable, therefore, make that described desk lamp its luminous intensity and illumination zone under different external condition are all the same and immutable; When the residing external environment of described desk lamp was brighter, described desk lamp still sent very bright light (light intensity is bigger), so causes unnecessary waste, is unfavorable for the energy savings resource.In order to overcome the defective of above-mentioned desk lamp, be generally desk lamp an adjusting knob is set, the user can regulate the luminous intensity of described desk lamp by this adjusting knob in the use, so that the luminous intensity of desk lamp and external environment adapt.But, this desk lamp need manually go to regulate luminous intensity by the user, troublesome poeration so not only, and be difficult at short notice the luminous intensity of described desk lamp is adjusted in the suitable scope, therefore regulate complex operation, and cause the user to be reluctant the luminous intensity of removing to regulate desk lamp, thereby be difficult to really reach purpose of energy saving for energy-conservation.
Therefore, be necessary to provide a kind of easy to use, defective that energy-saving desk lamp that can regulate luminous intensity automatically overcomes above-mentioned two kinds of desk lamps.
The utility model content
The purpose of this utility model provide a kind of easy to use, can regulate the energy-saving desk lamp of luminous intensity by external environment bright-dark degree automatically.
For achieving the above object, the utility model provides a kind of energy-saving desk lamp, this energy-saving desk lamp comprises: lamp socket, arm, light-emitting device and internal control circuit, described light-emitting device is electrically connected with described internal control circuit and fixedlys connected with an end of described arm, the other end of described arm is connected with described lamp socket, the bottom face of described lamp socket is that planar structure is to place whole described energy-saving desk lamp on the mounting table, wherein, described light-emitting device comprises lampshade and is individually fixed in the interior LED lamp plate of described lampshade, photo resistance and light intensity control panel, described lampshade is fixed in an end of described arm, be equiped with some LED lamps on the described LED lamp plate and be electrically connected with internal control circuit, described light intensity control panel respectively with described LED lamp plate, internal control circuit and photo resistance are electrically connected to control the luminous intensity of described LED lamp by the variation of described photo resistance resistance with described internal control circuit.
Preferably, offer through hole on the described lampshade, described photo resistance be installed on described through hole under.The light of described energy-saving desk lamp external environment of living in is injected in the described photo resistance by described through hole, thereby make described photo resistance correspondingly change the resistance value of itself with the difference of incident intensity, to change the curtage value of described photo resistance circuit of living in.
Preferably, described light-emitting device also comprises reflective mirror, described reflective mirror be installed on described LED lamp plate under.The light that described LED lamp sends can be dispersed to all directions and open, described reflective mirror be installed on described LED lamp plate under can make the light dispersed by described reflective mirror reflection and disperse towards periphery and open downwards, thereby the light that described energy-saving desk lamp is sent is brighter, and illumination zone is wider.
Preferably, described reflective mirror protrudes out to described LED lamp plate and forms the corresponding accepting hole of a plurality of and described LED lamp, and described LED lamp is corresponding is contained in the described accepting hole for each.Described accepting hole can prevent that not only described LED lamp from avoiding extraneous damage, and described LED lamp is directly contacted with reflective mirror, thereby, sending downward light from described LED lamp will directly be reflected, reduced the loss of light before reflection of downward emission, the light that described energy-saving desk lamp is sent is brighter.
Preferably, described light-emitting device also comprises the clear lamp mirror, and described clear lamp mirror is installed on the below of described reflective mirror to form the enclosure space of ccontaining described LED lamp plate and reflective mirror with described lampshade.Described transparent light microscopic forms the space of a sealing with described lampshade, thereby can protect LED lamp plate and the reflective mirror that is fixed in this space effectively, nor can influence the brightness of illumination and the scope of described LED lamp.
Compared with prior art, energy-saving desk lamp of the present utility model, since described light intensity control panel respectively with described LED lamp plate, internal control circuit and photo resistance are electrically connected to control the luminous intensity of described LED lamp by the variation of described photo resistance resistance with described internal control circuit, thereby in the use of described energy-saving desk lamp, described photo resistance can change its resistance value according to the extraneous bright dark situation of this energy-saving desk lamp, to change the curtage value of described photo resistance circuit of living in, and by described light intensity control panel and internal control circuit one work control and regulation described LED lamp luminous intensity, the luminous quantity of described LED lamp is combined with the lighting condition of external environment to satisfy the requirement of user to light.Therefore energy-saving desk lamp of the present utility model can be regulated the luminous intensity of itself automatically and in real time according to the concrete light and shade condition in the external world; easy to use; not only saved electric energy; and allow the user under suitable and balanced lighting condition, work all the time or to learn, help the protection of user to eyes.
By following description also in conjunction with the accompanying drawings, it is more clear that the utility model will become, and these accompanying drawings are used to explain embodiment of the present utility model.
Description of drawings
Fig. 1 is the structural representation of the utility model energy-saving desk lamp.
Fig. 2 is the amplification decomposing schematic representation of the described A part of Fig. 1.
The specific embodiment
With reference now to accompanying drawing, describe embodiment of the present utility model, the similar elements label is represented similar elements in the accompanying drawing.As mentioned above, the utility model provide a kind of easy to use, can regulate the energy-saving desk lamp of luminous intensity by external environment bright-dark degree automatically.
With reference to figure 1, Fig. 1 is the structural representation of the utility model energy-saving desk lamp.As shown in the figure, the utility model energy-saving desk lamp comprises: lamp socket 100, arm 200, light-emitting device 300 and be built in internal control circuit (figure does not show) in the described lamp socket 100, described light-emitting device 300 is electrically connected with described internal control circuit and fixedlys connected with an end of described arm 200, when described energy-saving desk lamp under the energising situation, described internal control circuit controls the work of described light-emitting device 300 so that it realizes illuminating effect on demand, the other end of described arm 200 is connected with described lamp socket 100, the bottom face of described lamp socket 100 is that planar structure is to place whole described energy-saving desk lamp on the mounting table, also be provided with switching knob 101 on the described lamp socket 100, described switching knob 101 is electrically connected with described internal control circuit, described energy-saving desk lamp is begun or quits work by rotating described switching knob 101.
Particularly, please in conjunction with reference to figure 2.Described light-emitting device 300 comprises: lampshade 310, LED lamp plate 320, reflective mirror 350 and clear lamp mirror 360.Described lampshade 310 is fixedly installed in an end of described arm 200, and an end of the contiguous described arms 200 of described lampshade 310 offers through hole 311, and the light of the residing external environment of described energy-saving desk lamp can enter in the described lampshade 310 by described through hole 311 irradiations.The lower end of described lampshade 310 fixedly is equiped with clear lamp mirror 360, and described clear lamp mirror 360 cooperates the space that forms a sealing with ccontaining other device with described lampshade 310, and can make other device avoid external influence.Described LED lamp plate 320 is fixedly mounted in the described lampshade 310 and is contained in described clear lamp mirror 360 and cooperates with lampshade 310 in the space that forms, described LED lamp plate is electrically connected with described internal control circuit, and be equiped with a plurality of LED lamps on it, thereby described LED lamp can be luminous by described switching knob 101 or be extinguished the function that realizes its illumination under the energising situation.Described light intensity control panel 330 all is installed on described clear lamp mirror 360 with photo resistance 340 and cooperates with lampshade 310 in the space that forms; Described photo resistance 340 be positioned at described through hole 311 under and be electrically connected with described light intensity control panel 330, thereby the light of the residing external environment of described energy-saving desk lamp shines in the described photo resistance 340 by described through hole 311, and described photo resistance 340 changes the resistance of himself to change the curtage value of described photo resistance 340 circuit of living in according to the incident light intensity; Described light intensity control panel 330 respectively with described LED lamp plate 320; photo resistance 340 and internal control circuit are electrically connected; when described photo resistance 340 changes according to the curtage value that makes its residing circuit by ambient light; described light intensity control panel 330 controls to adjust the luminous intensity of LED lamp 321 on the described LED lamp plate 320 by the cooperation with described internal control circuit; to realize that described energy-saving desk lamp is according to the light and shade condition of external environment and the luminous intensity of regulating described LED lamp 321 automatically; not only saved electric energy; and allow the user under suitable and balanced lighting condition, work all the time or to learn, help the protection of user to eyes.Described reflective mirror 350 be fixedly installed in described clear lamp mirror 360 cooperate in the space that forms with lampshade 310 and be positioned at described LED lamp plate 320 under, described reflective mirror 350 protrudes out to described LED lamp plate 320 and forms the corresponding accepting hole 351 of a plurality of and described LED lamp 321, so that each described LED lamp 321 is contained in the described accepting hole 351 respectively, thereby, described accepting hole 351 can prevent that not only described LED lamp 321 from avoiding extraneous damage, and described LED lamp 321 is directly contacted with reflective mirror 350, thereby the light that sends downwards from described LED lamp 321 will directly be reflected, reduced the loss of light before reflection of downward emission, the light that described energy-saving desk lamp is sent is brighter, and what can throw light on is wider.
Abovely the utility model is described, but the utility model is not limited to the embodiment of above announcement, and should contains various modification, equivalent combinations of carrying out according to essence of the present utility model in conjunction with most preferred embodiment.