CN2786428Y - Back projection type reflective lighting lamp - Google Patents
Back projection type reflective lighting lamp Download PDFInfo
- Publication number
- CN2786428Y CN2786428Y CNU2005200823096U CN200520082309U CN2786428Y CN 2786428 Y CN2786428 Y CN 2786428Y CN U2005200823096 U CNU2005200823096 U CN U2005200823096U CN 200520082309 U CN200520082309 U CN 200520082309U CN 2786428 Y CN2786428 Y CN 2786428Y
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- speculum
- emitting diode
- light emitting
- light
- reflecting mirror
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Abstract
The utility model relates to a back projection type reflective lighting lamp fitting which belongs to the field of a lighting device and comprises a light emitting diode and a reflecting mirror. The utility model is characterized in that the reflecting mirror is the combined type reflecting mirror which is formed by the intersection of a parabolic rotating curved surface and a cylindrical surface, and the light emitting diode is position on a focus of the parabolic rotating curved surface of the reflecting mirror. The luminous surface of a luminous core of the light emitting diode faces to the parabolic rotating curved surface of the reflecting mirror, and compared with other common products, because in the technical scheme, the reflecting mirror uses the characteristic of a combined type structure which is formed by the intersection of the parabola rotating curved surface and the cylindrical surface, the parallelism of the light lay which is sent out by the lamp fitting is high and the volume of the whole lighting lamp fitting can remain unchanged. The utility model is especially suitable for the use occasion on which miniaturized lamp fittings, such as a hand-held or head type lighting lamp fitting, etc., are needed and can be widely used for various fields of a long distance lighting lamp fitting, the hand-held or head type lighting lamp fitting and various signal lamp devices, etc.
Description
Technical field
The utility model belongs to field of illuminating device, relates in particular to a kind of lighting device that adopts semiconductor devices as light source.
Background technology
LED is English Light Emitting Diode (light emitting diode) abbreviation.
LED makes as GaAs (GaAs), GaP (gallium phosphide), GaAsP (gallium arsenide phosphide), GaN (gallium nitride), A1GalnP semiconductors such as (aluminium are transferred indium phosphorus) normally by the III-IV compounds of group, and its core is the P-N knot.Under forward voltage, electronics injects the P district by the N district, and the N district is injected by the P district in the hole.Minority carrier (few son) part that enters the other side zone is compound and make it luminous with majority carrier (many sons), and it is the high-performance solid light source that a kind of novel faint electric energy of usefulness just can be luminous.
First commercialization of 20 middle of century LED light emitting diode appears on the market, and through the course in surplus 50 years, its performance was constantly improved, and manufacturing cost constantly descends, and has obtained to induce one to advise the purpose rapid progress.LED with its intrinsic high efficiency, long-life, low-loss, vibration resistance, response speed is fast, volume is little etc., and advantage has obtained using widely.Along with improvement of Manufacturing Technology, luminous efficiency and the luminous intensity of its single LED constantly are improved, and along with the improvement of LED performance and the enhancing of power, making the highlight illumination light fixture by single LED has been possible, the LED product has become the new product that has influence in the application of lighting field.
Because the characteristics on its product structure are limit, the light-emitting area of LED is a semi-sphere, the light that it sent is semi-sphere shape scattered light, for the light that can make scattering shines out forward as far as possible, reach stronger intensity of illumination (for identical irradiation distance) or farther irradiation distance (for identical luminous intensity), the technical staff has done a large amount of research and trial.
The day for announcing is on September 3rd, 2003, notification number is to disclose a kind of " high brightness directional light diode illuminating device " in the Chinese patent of CN 2570601Y, comprise packaging body, the luminous core of LED, reflector, the luminous core of LED is positioned on the focus of front end bulb, reflector is for comprising bowl-shape that a kind of parabola constitutes at least, its luminous point position is positioned on the focus of front end bulb, and the light that the LED head is sent is directional light or is similar to directional light.But there is the deficiency that front end bulb part in addition has more scattered light loss, so the radiation response of directional light is not ideal enough.
The day for announcing is on June 18th, 2003, notification number is to disclose a kind of " LED cold light source mine lamp " in the Chinese patent of CN 2556474Y, its main composition is that group formula lens one side focus place has LED luminous tube spot light, the all corresponding LED luminous tube spot light of each convex lens, light source is made up of printed board and LED luminous tube.Its part scattered light loss that exists equally beyond convex lens is bigger, causes the reduction of directional light luminous efficiency; And, owing to adopt the convex lens parts, cause the lighting device manufacturing cost to increase, the light fixture overall weight increases.
The applicant applied on November 3rd, 2004, application number is 200420097539.5 Chinese utility application, a kind of " LED total reflection parallel light light fixture " disclosed, it comprises LED light emitting diode and speculum, speculum is the parabola surface of revolution speculum that is formed along the rotation of x axle by parabola y2=kx, the LED light emitting diode is positioned on the focus of speculum, and the light-emitting area of described LED lumination of light emitting diode core is towards the speculum setting.These innovation and creation have solved the problems referred to above, cause parabola surface of revolution speculum opening bigger but there is in order to prevent whole scattered light losses, whole lighting volume deficiency bigger than normal.
The utility model content
Technical problem to be solved in the utility model provides a kind of depth of parallelism height that both can make the light fixture emitted light, can make the miniaturization of whole lighting volume, in light weight, the back projection type reflective lighting fixtures that reduces manufacturing cost again.
The technical solution of the utility model is: a kind of back projection type reflective lighting fixtures is provided, comprise LED light emitting diode and speculum, its LED light emitting diode is positioned on the focus of speculum, and the light-emitting area of LED lumination of light emitting diode core is characterized in that towards the speculum setting described speculum is to intersect the combined type speculum that is constituted by a parabola surface of revolution and a face of cylinder; Described LED light emitting diode is positioned on the focus of parabola surface of revolution of speculum; The light-emitting area of described LED lumination of light emitting diode core is provided with towards the parabola surface of revolution of speculum.
Particularly, its described parabola surface of revolution is by parabola y
2The parabola surface of revolution that=kx forms along the rotation of x axle, its described face of cylinder are the faces of cylinder that is formed along the rotation of x axle by straight line y=k '.
Compared with the prior art, the utility model has the advantages that:
Beyond advantages such as " depth of parallelism that emits beam height; compare; little in the light intensity decays on the same distance, littler " at light emitting source power demand under the identical intensity of illumination with other products with the previous application of the applicant, owing to adopt by a parabola surface of revolution and a face of cylinder and intersect the architectural feature that institute forms speculum, make the cross sectional dimensions of speculum openend reduce, thereby reached the goal of the invention that makes the miniaturization of whole lighting volume, weight saving, reduction manufacturing cost.
Description of drawings
Below in conjunction with drawings and Examples the utility model is described further.
Fig. 1 is a structural representation of the present utility model.
1 is parabola surface of revolution speculum among the figure, and 2 is the LED light emitting diode, and 3 is cylindrical mirror, 4 light that send for LED.
The specific embodiment
Among Fig. 1, speculum is by parabola y
2Parabola surface of revolution 1 that=kx forms along the rotation of x axle and the face of cylinder 3 crossing combined type speculums that constituted that form along the rotation of x axle by straight line y=k ', LED light emitting diode 2 is positioned on the focus of parabola surface of revolution speculum, and the luminous hemisphere face of LED lumination of light emitting diode core is towards the speculum setting.
Because the light-emitting area of the luminous core of LED is towards the parabolic surface setting of speculum, the place ahead is invested in the light major part that it the sends mirror refraction that can be reflected.Simultaneously, because of only adopt protection hemisphere face encapsulating structure in LED, its encapsulated layer is thinner, and volume is very little, and the directional light that mirror reflects is come out blocks less, therefore, the depth of parallelism height that speculum emits beam, scattered light is few.
Owing to adopt the structure of combinations thereof formula speculum, the place ahead is invested in the light that the luminous core of LED the sends mirror refraction that can major part be reflected, but have sub-fraction light and reduce to form certain scattered light because of parabola surface of revolution opening section, this part scattered light is by the reflection of cylindrical mirror, meeting forms certain scattered light and is launched away, and the needs such as hand-held or the actual use of wear-type lighting have just in time been satisfied in the existence of this part scattered light again.
According to different use occasions and user's different requirements, can be by changing the position that parabola surface of revolution 1-1 and face of cylinder 1-2 intersect, the size of coming accommodation reflex mirror openend cross sectional dimensions.
Speculum openend cross sectional dimensions is not being had strict restriction or, the joining on the parabola surface of revolution and the face of cylinder can moved to the openend direction of parabola surface of revolution, to obtain better reflecting effect in the occasion that light fixture volume size does not hinder use; Speculum openend cross sectional dimensions is being had relatively high expectations or the light fixture volume is being had the strict occasion that limits, the joining on the parabola surface of revolution and the face of cylinder can be moved to the zenith directions of parabola surface of revolution, so that whole lighting has a smaller volume and a certain amount of scattered light.
Employing is intersected the architectural feature that institute forms speculum by a parabola surface of revolution and a face of cylinder, make the cross sectional dimensions of speculum openend reduce, make the miniaturization of whole lighting volume, in light weight, the goal of the invention that reduces manufacturing cost thereby reached.
Compare with other mill runs, the luminous reflection efficiency of the technical program is higher, and is little in the light intensity decays on the same distance, the light emitting source power demand is littler under identical intensity of illumination.Simultaneously, speculum adopts by a parabola surface of revolution and a face of cylinder and intersects the fabricated structure characteristics that constituted, both can make the depth of parallelism height of light fixture emitted light, the volume of whole lighting is remained unchanged substantially, need to be specially adapted to the use occasion of miniaturization light fixture such as hand-held or wear-type lighting etc.
The utility model can be widely used in various remote lightings, hand-held or fields such as wear-type lighting and various signal lamp devices.
Claims (3)
1. a back projection type reflective lighting fixtures comprises LED light emitting diode and speculum, and its LED light emitting diode is positioned on the focus of speculum, and the light-emitting area of LED lumination of light emitting diode core is characterized in that towards the speculum setting:
Described speculum is to intersect the combined type speculum that is constituted by a parabola surface of revolution and a face of cylinder;
Described LED light emitting diode is positioned on the focus of parabola surface of revolution of speculum;
The light-emitting area of described LED lumination of light emitting diode core is provided with towards the parabola surface of revolution of speculum.
2. according to the described back projection type reflective lighting fixtures of claim 1, it is characterized in that described parabola surface of revolution is by parabola y
2The parabola surface of revolution that=kx forms along the rotation of x axle.
3. according to the described back projection type reflective lighting fixtures of claim 1, it is characterized in that the described face of cylinder is the face of cylinder that is formed along the rotation of x axle by straight line y=k '.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200823096U CN2786428Y (en) | 2005-04-11 | 2005-04-11 | Back projection type reflective lighting lamp |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNU2005200823096U CN2786428Y (en) | 2005-04-11 | 2005-04-11 | Back projection type reflective lighting lamp |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN2786428Y true CN2786428Y (en) | 2006-06-07 |
Family
ID=36775002
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNU2005200823096U Expired - Fee Related CN2786428Y (en) | 2005-04-11 | 2005-04-11 | Back projection type reflective lighting lamp |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN2786428Y (en) |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841018A (en) * | 2015-01-12 | 2016-08-10 | 北京华夏视科图像技术有限公司 | Parallel light source device of machine vision imaging system and machine vision imaging system |
| CN107448908A (en) * | 2016-05-30 | 2017-12-08 | 广州市龙华工业设计有限公司 | A kind of reflector for eliminating veiling glare |
| CN110456505A (en) * | 2018-05-07 | 2019-11-15 | 脸谱科技有限责任公司 | Transparent and reflexive light source |
-
2005
- 2005-04-11 CN CNU2005200823096U patent/CN2786428Y/en not_active Expired - Fee Related
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN105841018A (en) * | 2015-01-12 | 2016-08-10 | 北京华夏视科图像技术有限公司 | Parallel light source device of machine vision imaging system and machine vision imaging system |
| CN107448908A (en) * | 2016-05-30 | 2017-12-08 | 广州市龙华工业设计有限公司 | A kind of reflector for eliminating veiling glare |
| CN110456505A (en) * | 2018-05-07 | 2019-11-15 | 脸谱科技有限责任公司 | Transparent and reflexive light source |
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| C19 | Lapse of patent right due to non-payment of the annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |