CN203177060U - Self-equalization natural light converging and collecting device for back projector light sources - Google Patents
Self-equalization natural light converging and collecting device for back projector light sources Download PDFInfo
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- CN203177060U CN203177060U CN 201320113598 CN201320113598U CN203177060U CN 203177060 U CN203177060 U CN 203177060U CN 201320113598 CN201320113598 CN 201320113598 CN 201320113598 U CN201320113598 U CN 201320113598U CN 203177060 U CN203177060 U CN 203177060U
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- natural light
- equalization
- self
- collecting device
- converging
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Abstract
The utility model discloses a self-equalization natural light converging and collecting device for back projector light sources. The self-equalization natural light converging and collecting device comprises a hollow round-table-shaped supporting frame, a converging lens arranged on the large bottom face of the supporting frame, a parallel light calibrating lens arranged on the small bottom face of the supporting frame, and LED lamp beads interspersed on the surface of the inner side of the converging lens. The self-equalization natural light converging and collecting device collects natural light and sends the natural light to a back projector for use, power consumption of the back projector can be greatly reduced, and work is environment-friendly. When the self-equalization natural light converging and collecting device collects the natural light, the LED lamp beads are arranged to be matched with the self-equalization natural light converging and collecting device for work, light rays can be automatically supplemented when the natural light is insufficient, and therefore an automatic equalization effect is achieved. Due to the fact that the LED lamp beads are arranged on the surface of the inner side of the converging lens in a distributing mode, installation area is large enough, therefore, single-crystal LEDs of low price can be used for achieving the LED lamp beads, and utilization of multi-crystal assembly LEDs of high price is not needed. The LED lamp beads are widely distributed, the heat dissipation process is not needed, and therefore cooling fins and fan assemblies are removed.
Description
Technical field
The utility model relates to the back projection light source technology, is specially a kind of natural daylight that has from equalization function for back projection light source and converges harvester.
Background technology
The back light that present image documentation equipment (as projecting apparatus, LCD TV etc.) adopts all utilizes lighting to realize.This lighting power is bigger, and it is big to be easy to damage and operating noise.Realize as the current general using high-pressure sodium lamp of the back light of multimedia teaching rear-projection machine, the power of this high-pressure sodium lamp up to 200w or more than, only about 6000 hours, the radiator fan noise is big during work, has a strong impact on educational effect for working life.
Gathering natural daylight is a kind of good method that can address the above problem for back projection light source.But the natural light irradiation instability is difficult to the rear-projection effect that reaches good.
Summary of the invention
At the problems referred to above, the utility model provides a kind of natural daylight of supplying the light equilibrium to converge harvester, and this device is used for back projection light source can reach good rear-projection effect.
The utility model is that the technical scheme that its technical problem of solution adopts is:
What be used for back projection light source converges harvester from balanced natural daylight, comprising: the bracing frame that is hollow truncated cone-shaped; Be arranged on the plus lens of the big bottom surface of bracing frame, the outer surface of plus lens is as the sunshine plane of incidence; Be arranged on the correction parallel light lens of the little bottom surface of bracing frame, proofread and correct the outer surface of parallel light lens as the sunshine exit facet; Intersperse among the LED lamp pearl of plus lens inner surface.
Preferably, proofread and correct the outer surface of parallel light lens or/and inner surface is provided with the UV filters coating.
Preferably, the focus of described plus lens overlaps with the focus of proofreading and correct parallel light lens.
The beneficial effects of the utility model are: the utility model is gathered natural daylight and is delivered to the use of rear-projection parts, can reduce the power consumption of rear-projection greatly, the work environmental protection; It is provided with LED lamp pearl cooperating in natural lighting, can replenish light automatically when natural daylight is not enough, realizes the automatic equalization effect; Because LED lamp pearl distributes and to be installed in the plus lens inner surface, erection space is enough big, so it can adopt cheap monocrystal LED to realize, does not need to adopt expensive polycrystal component leds; LED lamp pearl distributes wide, does not need to carry out radiating treatment, has removed fin and fan component from.
Description of drawings
Be further detailed below in conjunction with the drawings and specific embodiments:
Fig. 1 is the structural representation of a kind of embodiment of the utility model.
The specific embodiment
The utility model is used for that natural daylight (being mainly sunshine) is collected back supply rear-projection equipment to be used, it is equipped with LED lamp pearl in harvester, the mounting structure of this LED lamp pearl has various advantages, a topmost advantage is the round-the-clock use of implement device, whenever can both realize from balanced.
Concrete effect of the present utility model is larger area to be shone sunshine converge and be the intensive light than small size, promotes energy density.The sunshine of incident is substantially parallel light, and sunshine converges gathering-device 1 and also preferably this light converged the parallel light of back output, realizes that the method for parallel output light is described in the back.
With reference to Fig. 1, device comprises bracing frame 11, plus lens 12, proofreaies and correct parallel light lens 13, LED lamp pearl 14.Bracing frame 11 is hollow truncated cone-shaped, and plus lens 12 is arranged on bracing frame 11 big bottom surfaces, proofreaies and correct the little bottom surface that parallel light lens 13 is arranged on bracing frame 11, this structures shape plus lens 12 and correction parallel light lens 13 are parallel structures.Plus lens 12 plays the effect that compiles sunray, and its outer surface is as the sunshine plane of incidence.Usually, proofread and correct parallel light lens 13 and play the sunray that converges is readjusted effect into parallel rays, so its focus overlaps with the focus of plus lens 12, the outer surface of lens 13 is as the sunshine exit facet.
In order to follow the irradiation of sunlight direction, sunshine converges gathering-device generally need be configured to the structure that can turn to, and the specific implementation that turns to is various, does not repeat them here.
From top description as can be seen, of the present utility model simple in structure, cost of manufacture is little, and overall compact is easy to turn to control.
Embodiment of the present utility model is not restricted to the described embodiments, as long as it reaches technique effect of the present utility model with essentially identical means, all should belong to protection domain of the present utility model.
Claims (3)
1. what be used for back projection light source converges harvester from balanced natural daylight, it is characterized in that comprising:
The bracing frame that is hollow truncated cone-shaped;
Be arranged on the plus lens of the big bottom surface of bracing frame, the outer surface of plus lens is as the sunshine plane of incidence;
Be arranged on the correction parallel light lens of the little bottom surface of bracing frame, proofread and correct the outer surface of parallel light lens as the sunshine exit facet;
Intersperse among the LED lamp pearl of plus lens inner surface.
According to claim 1 for back projection light source converge harvester from balanced natural daylight, it is characterized in that proofreading and correct the outer surface of parallel light lens or/and inner surface is provided with the UV filters coating.
According to claim 1 for back projection light source converge harvester from balanced natural daylight, the focus that it is characterized in that described plus lens overlaps with the focus of proofreading and correct parallel light lens.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320113598 CN203177060U (en) | 2013-03-13 | 2013-03-13 | Self-equalization natural light converging and collecting device for back projector light sources |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN 201320113598 CN203177060U (en) | 2013-03-13 | 2013-03-13 | Self-equalization natural light converging and collecting device for back projector light sources |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN203177060U true CN203177060U (en) | 2013-09-04 |
Family
ID=49073750
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN 201320113598 Expired - Fee Related CN203177060U (en) | 2013-03-13 | 2013-03-13 | Self-equalization natural light converging and collecting device for back projector light sources |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN203177060U (en) |
-
2013
- 2013-03-13 CN CN 201320113598 patent/CN203177060U/en not_active Expired - Fee Related
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Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| C14 | Grant of patent or utility model | ||
| GR01 | Patent grant | ||
| CF01 | Termination of patent right due to non-payment of annual fee | ||
| CF01 | Termination of patent right due to non-payment of annual fee |
Granted publication date: 20130904 |