CN101307871A - LED desk lamp - Google Patents
LED desk lamp Download PDFInfo
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- CN101307871A CN101307871A CNA2007101078111A CN200710107811A CN101307871A CN 101307871 A CN101307871 A CN 101307871A CN A2007101078111 A CNA2007101078111 A CN A2007101078111A CN 200710107811 A CN200710107811 A CN 200710107811A CN 101307871 A CN101307871 A CN 101307871A
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Abstract
The invention discloses a light-emitting diode desk lamp, comprising a base, a support and a luminescent device. One end part of the support is connected with the base, and the luminescent device comprises a lampshade, a plurality of Lambert type light-emitting diode light source groups, a plurality of side illumination type light-emitting diode light source groups, a light transmission support part and a plurality of light-gathering plates. The lampshade is pivoted at the other end part of the support, and the light transmission support part is arranged on the lampshade, the lampshade comprises a side wall and a top wall connected with the side wall, and the Lambert type light light-emitting diode light source groups and the side illumination type light-emitting diode light source groups are arranged on the top wall. Additionally, the light-gathering plates are arranged on the light transmission support part corresponding to the Lambert type light light-emitting diode light source groups to focus rays which are emitted by the Lambert type light light-emitting diode light source groups.
Description
Technical field
The invention relates to a kind of desk lamp, and particularly relevant for a kind of light emitting diode (LightEmitting Diode, LED) desk lamp.
Background technology
In daily life, people can utilize desk lamp to come the more weak zone of reinforcement indoor light usually.Therefore, for example be that the not enough zone of light such as desk or desk promptly has bright working environment, and the user can read or be engaged in other work on desk or desk, and needn't worry the working environment insufficient light and cause vision degeneration.
Generally speaking, (Light Emitting Diode, LED) light source has the advantage of the little and long service life of volume, so the use of LED desk lamp is more and more universal because light emitting diode.Figure 1 shows that the schematic diagram of known a kind of LED desk lamp.Please refer to Fig. 1, LED desk lamp 100 is to be light emitting source 110 with a plurality of lambert's formulas (Lambertian) LED, and the light that lambert's formula LED is sent can directly expose in working environment or the reading environment, so that preferable illumination (illumination) to be provided.
Yet, because the light emitting source of LED desk lamp 100 all adopts lambert's formula LED, and the light that sent of lambert's formula LED directly outgoing is to lampshade 120, so desk lamp 100 has the too high situation of briliancy (brightness) to take place easily.Thus, when the user is reading or during work, be directed to the eyes that light in the working environment promptly is directed to the user easily, cause user's eyes uncomfortable by lambert's formula LED.
Figure 2 shows that the schematic diagram of known another kind of LED desk lamp.Please refer to Fig. 2,200 of LED desk lamps are to be light emitting source 210 with side illuminated (edge type) LED all, wherein the light that sent of the illuminated LED of side is via after the reflection of the reflective films in the lampshade 220, the beginning outgoing is to lampshade 220, so the light that LED desk lamp 200 sent promptly is difficult for being directed to user's eyes and causes user's eyes discomfort.Yet, reflex to lampshade 220 outer light intensities via reflective film and have the phenomenon of decay, so have the situation of light illumination deficiency to take place in working environment or the reading environment easily, promptly, during the LED desk lamp 200 of the illuminated LED of application side, its light utilization rate is not good.
What in addition, known another LED desk lamp (not shown) can significantly increase the illuminated LED of side sets quantity to improve the light illumination in the working environment.Yet aforesaid way can cause the cost of LED desk lamp to increase.
Summary of the invention
The invention provides a kind of LED desk lamp, it can produce brightness light uniformly, to solve the too high problem of LED desk lamp briliancy.
The invention provides a kind of LED desk lamp, it can solve the problem of working environment or reading environment illumination deficiency.
The invention provides a kind of LED desk lamp, it can reach the brightness that meets the standard of throwing light under low cost of manufacture.
The present invention proposes a kind of LED desk lamp, and it comprises a pedestal, a support and a light-emitting device.One end of support is connected with pedestal, and light-emitting device comprises that then lampshade, a plurality of lambert's formula (Lambertian) LED source group, a plurality of side illuminated (side-emitting) LED source group, that is articulated in the other end of support is set up in euphotic support and a plurality of light-collecting piece of lampshade.
Wherein, lampshade has a sidewall, a roof that is connected with sidewall and one and roof is corresponding goes out optical cross-section, and lambert's formula LED source group and side view type light emitting diode light source group are to be equipped on roof.In addition, light-collecting piece is corresponding these lambert's formula LED source groups and being equipped on the euphotic support, with the light of concentrating lambert's formula LED source group to be sent.
In one embodiment of this invention, light-emitting device more comprises lens, and it is equipped on out optical cross-section, the light that is sent from lambert's formula LED source group and side view type light emitting diode light source group with homogenising.
In one embodiment of this invention, lens are a diffusion eyeglass.
In one embodiment of this invention, euphotic support is arranged on the sidewall of lampshade, and is parallel with the roof of lampshade.
In one embodiment of this invention, these side view type light emitting diode light source groups are positioned at the outer peripheral areas of roof, and these lambert's formula LED source groups are positioned at the zone line of roof.
In one embodiment of this invention, light-emitting device more comprises a reflective film, and it is equipped on the roof and the sidewall of lampshade.And more preferably, reflective film for forming, for example utilizes the lampshade of the higher material preparation one-tenth of reflectance factor with lampshade, and its internal side wall then can possess the effect of reflective film naturally.
In one embodiment of this invention, light-collecting piece is positioned at going out on the light path of lambert's formula LED source group.
The present invention is with the light emitting source as LED desk lamp with side view type light emitting diode light source group collocation lambert formula LED source group.Wherein, the lambert's formula LED source group that is equipped on the zone line of roof can provide working environment or the preferable illumination of reading environment.In addition, because the present invention only is provided with several in order to promote lambert's formula LED source group of ambient light illumination in luminous disome desk lamp, therefore compared to known be the desk lamp of light emitting source with lambert's formula LED source group fully, LED desk lamp of the present invention has suitable briliancy.
On the other hand, because LED desk lamp of the present invention is provided with lambert's formula LED source group that several can promote ambient light illumination, so the present invention can improve known technology because of rolling up the problem that quantity causes the desk lamp cost significantly to increase that sets of the illuminated LED of side.
For above and other objects of the present invention, feature and advantage can be become apparent, preferred embodiment cited below particularly, and cooperate appended graphicly, be described in detail below.
Description of drawings
Figure 1 shows that the schematic diagram of known a kind of LED desk lamp;
Figure 2 shows that the schematic diagram of known another kind of LED desk lamp;
Figure 3 shows that the schematic diagram of the LED desk lamp of one embodiment of the invention.
The specific embodiment
Figure 3 shows that the schematic diagram of the LED desk lamp of one embodiment of the invention.Please refer to Fig. 3, the LED desk lamp 300 of present embodiment comprises a pedestal 310, a support 320 and a light-emitting device 330.One end 320a of support 320 is connected with pedestal 310,330 of light-emitting devices are the other end 320b that is articulated in support 320, and the beam projecting direction of the adjustable electro-optical device 330 of haircuting of user, so that user's desk or desk have bright reading environment or working environment.Hereinafter, this paper will elaborate at the light-emitting device 330 of present embodiment.
Please continue with reference to figure 3, the light-emitting device 330 of present embodiment comprises that mainly one is articulated in euphotic support 336 and a plurality of light-collecting piece 337 that the lampshade 332 of bracket end 320b, a plurality of lambert's formula LED source group 334, a plurality of side view type light emitting diode light source group 335, are set up in lampshade 332.Wherein, lampshade 332 has a sidewall 332a, a roof 332b who is connected with sidewall 332a and one and the corresponding optical cross-section 332c of going out of roof 332b, and lambert's formula LED source group 334 and side view type light emitting diode light source group 335 are to be equipped on roof 332b.
The luminous energy of side view type light emitting diode concentrate on usually and LED exiting surface normal angle 60 to 120 degree between.In the present embodiment, side view type light emitting diode light source group 335 can for example be the outer peripheral areas that is equipped on roof 332b, and lambert's formula LED source group 334 for example is the zone line that is equipped on roof 332b.Wherein, the lambert's formula LED source group 334 that is equipped on roof 332b zone line is suitable for light is directed to lampshade 332 outsides, to promote the working environment or the light illumination of reading environment.Because the characteristic of giving out light of general lambert's formula LED source group 334 is scattering, therefore, corresponding these lambert's formula LED source groups 334 of present embodiment set light-collecting piece 337, concentrate in the working environment or the proper range of reading environment with the light that effectively lambert's formula LED source group 334 is scattered.
In detail, present embodiment can corresponding these lambert's formula LED source groups 334 set light-collecting piece 337 on euphotic support 336.Wherein, euphotic support 336 can for example be to be arranged at sidewall 332a, and is parallel with the roof of lampshade, so that light-collecting piece 337 can be positioned at going out on the light path of lambert's formula LED source group 334.Thus, the light that light-collecting piece 337 can be sent lambert's formula LED source group 334 effectively concentrates on working environment or reading environment, in order to user's work or reading.
Above-mentioned light-collecting piece 337 for example is to be embedded on the euphotic support 336.Certainly, in other preferred embodiment, light-collecting piece 337 can also other suitable mode be disposed on the euphotic support 336.
In addition, present embodiment can be provided with a reflective film 338 on roof 332b and sidewall 332a, reflex to outside the lampshade 332 with the light that effectively side view type light emitting diode light source group 335 is sent.Reflective film 338 preferable can formation with lampshade, for example the material of lampshade own is high reflectance, then can make the lampshade inboard have reflection effect as reflective film.
On the other hand, in order to allow LED desk lamp 300 can produce softer light, present embodiment can in lampshade 332 go out optical cross-section 332c place be provided with one for example be the diffusion eyeglass (diffusion lens) lens 339, so that from the equalizing light rays of lambert's formula LED source group 334 and side view type light emitting diode light source group 335, and then make LED desk lamp 300 can produce softer light.
Though present embodiment is the outer peripheral areas that side view type light emitting diode light source group 335 is equipped on roof 332b, and lambert's formula LED source group 334 is equipped on the zone line of roof 332b, yet in other preferred embodiment, lambert's formula LED source group 334 and side view type light emitting diode light source group 335 can also be staggered, and the present invention does not do any restriction at this.
In sum, the present invention is with the light emitting source as LED desk lamp with side view type light emitting diode light source group collocation lambert formula LED source group.Wherein, the light that lambert's formula LED source group is sent can be by light-collecting piece to concentrate on the working region or to read the zone, in order to user's work or reading.That is, the present invention can promote the light illumination of working environment or reading environment effectively, to improve known LED desk lamp because of being working environment or the not good problem of reading environment light illumination that light emitting source causes with side view type light emitting diode light source group fully.
In addition, because the present invention only need set up several lambert's formula LED source groups and can solve working environment or the not good problem of reading environment light illumination, promotes working environment or reading environment light illumination and need not significantly set up a plurality of side view type light emitting diode light source groups.Therefore, compared to known technology, the present invention can reduce the quantity that sets of LED source group, and then reduces the cost of manufacture of LED desk lamp.
On the other hand, because the present invention only is provided with several in order to promote lambert's formula LED source group of ambient light illumination in LED desk lamp, therefore be light emitting source with lambert's formula LED source group fully compared to known LED desk lamp, LED desk lamp of the present invention has suitable briliancy.In other words, LED desk lamp of the present invention can provide softer light, and the light that LED desk lamp sent also is difficult for being directed to user's eyes and causes user's eyes discomfort.
Though the present invention discloses as above with preferred embodiment; right its is not in order to limiting the present invention, anyly has the knack of this skill person, without departing from the spirit and scope of the present invention; when can doing a little change and retouching, so protection scope of the present invention is as the criterion when looking claims person of defining.
Claims (8)
1. a LED desk lamp is characterized in that, comprising:
One pedestal;
One support, an end of above-mentioned support is connected with above-mentioned pedestal; And
One light-emitting device comprises:
One lampshade is articulated in the other end of above-mentioned support, and wherein above-mentioned lampshade has a sidewall, a roof that is connected with above-mentioned sidewall and one and roof is corresponding goes out optical cross-section;
A plurality of lambert's formula LED source groups are equipped on above-mentioned roof;
A plurality of side view type light emitting diode light source groups are equipped on above-mentioned roof;
One euphotic support is set up in the above-mentioned lampshade; And
A plurality of light-collecting pieces, corresponding above-mentioned these lambert's formula LED source groups and being equipped on the above-mentioned euphotic support.
2. LED desk lamp according to claim 1 is characterized in that wherein above-mentioned light-emitting device more comprises lens, and it is equipped on above-mentioned going out on the optical cross-section.
3. LED desk lamp according to claim 1 is characterized in that, wherein above-mentioned lens are a diffusion eyeglass.
4. LED desk lamp according to claim 1 is characterized in that, wherein above-mentioned euphotic support is arranged on the above-mentioned sidewall of above-mentioned lampshade, and parallel with the above-mentioned roof of above-mentioned lampshade.
5. LED desk lamp according to claim 1, it is characterized in that, wherein above-mentioned these side view type light emitting diode light source groups are positioned at the outer peripheral areas of above-mentioned roof, and above-mentioned these lambert's formula LED source groups are positioned at the zone line of above-mentioned roof.
6. LED desk lamp according to claim 1 is characterized in that wherein above-mentioned light-emitting device more comprises a reflective film, and it is equipped on the above-mentioned roof of above-mentioned lampshade and above-mentioned sidewall.
7. LED desk lamp according to claim 6 is characterized in that wherein above-mentioned reflective film forms with above-mentioned lampshade.
8. LED desk lamp according to claim 1 is characterized in that, wherein above-mentioned these light-collecting pieces are positioned at going out on the light path of above-mentioned these lambert's formula LED source groups.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101078111A CN101307871A (en) | 2007-05-16 | 2007-05-16 | LED desk lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNA2007101078111A CN101307871A (en) | 2007-05-16 | 2007-05-16 | LED desk lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN101307871A true CN101307871A (en) | 2008-11-19 |
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Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2007101078111A Pending CN101307871A (en) | 2007-05-16 | 2007-05-16 | LED desk lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN101307871A (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563516A (en) * | 2011-12-27 | 2012-07-11 | 华北电力大学 | Optical fiber lighting and light emitting diode (LED) lamp complementary lighting system |
| CN104553442A (en) * | 2013-10-12 | 2015-04-29 | 李仕清 | Luminous diary or luminous book |
-
2007
- 2007-05-16 CN CNA2007101078111A patent/CN101307871A/en active Pending
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102563516A (en) * | 2011-12-27 | 2012-07-11 | 华北电力大学 | Optical fiber lighting and light emitting diode (LED) lamp complementary lighting system |
| CN104553442A (en) * | 2013-10-12 | 2015-04-29 | 李仕清 | Luminous diary or luminous book |
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Open date: 20081119 |