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Projection device and control method thereof

A technology of a projection device and a control method, which is applied in the field of projection technology, can solve the problems of small pattern pictures, the inability to maintain the uniformity of the projection pictures, and the reduction of image quality and brightness, and achieves the effect of saving energy.

Active Publication Date: 2022-08-09
CORETRONIC
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  • Abstract
  • Description
  • Claims
  • Application Information

AI Technical Summary

Problems solved by technology

In the existing technology, if the same welcome light is installed on different car models, such as RVs, sports cars, trucks, etc., due to the difference in body height of different car models, the higher the welcome light from the ground, the higher the projection pattern will be. It will be larger but the brightness will be weakened. On the contrary, the pattern projected by the welcome light with a lower ground level will be smaller but the picture will be brighter.
That is to say, the projection screen will change with the height, so the uniformity and image quality of the projection screen cannot be maintained.

Method used

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  • Projection device and control method thereof
  • Projection device and control method thereof
  • Projection device and control method thereof

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Embodiment Construction

[0015] The foregoing and other technical contents, features and effects of the present invention will be clearly presented in the following detailed description of a preferred embodiment with reference to the accompanying drawings. The directional terms mentioned in the following embodiments, such as: up, down, left, right, front or rear, etc., are only referring to the directions of the drawings. Accordingly, the directional terms used are illustrative and not limiting of the present invention.

[0016] figure 1 It is a schematic diagram of the function of a projection device when a vehicle door is opened according to an embodiment of the present invention. Please refer to the figure, the projection device 100 is suitable for being installed on the vehicle 102, for example, it is installed on the door of the vehicle (eg figure 1 shown) or the rear mirror on the door (or A-pillar) or the position under the front and rear fenders, the present invention is not limited. When t...

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Abstract

The present invention provides a projection device suitable for being installed on a vehicle and a control method thereof. The projection device includes a storage device, a projection module, a distance detection device and a control device. The storage device stores image data of at least one projection screen. The distance detection device measures the projection distance of the distance detection device to the projection plane. The control device is electrically connected to the storage device, the projection module and the distance detection device. The control device enables the projection module to project the above-mentioned at least one projection image and controls the brightness or size of the projection image corresponding to the projection distance, wherein the projection device is activated by opening the door, and the power of the projection device comes from the vehicle. The present invention can adjust the projection picture according to the projection distance to keep the picture size and brightness stable.

Description

technical field [0001] The present invention relates to a projection technology, and in particular, to a projection device and a control method thereof. Background technique [0002] At present, many vehicles are equipped with puddle lamps as auxiliary lighting, so that people getting on and off the vehicle can pay attention to the ground conditions and avoid accidentally stepping on dangerous terrain or getting dirty. For aesthetic or indicative functions, some of the welcome lights emit light beams that also form patterns or images on the ground. In the prior art, if the same welcome light is installed on different car models, such as RVs, sports cars, trucks, etc., due to the difference in the body height of different models, the pattern projected by the welcome light that is higher off the ground It will be larger but the brightness will be weakened. On the contrary, the pattern projected by the welcome light with a lower height will be smaller but the picture will be b...

Claims

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Application Information

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Patent Type & Authority Patents(China)
IPC IPC(8): H04N9/31
CPCH04N9/3173H04N9/3194H04N9/315
Inventor 苗耘林简文章
Owner CORETRONIC
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