A color-changing searchlight with LED fluorescent ceramic light source

Abstract

The present invention provides a color-changing searchlight with an LED fluorescent ceramic light source, which relates to the technical field of lighting equipment; it comprises: a lamp tube, in which a lens is provided; a substrate, fixedly mounted at the rear end of the lamp tube; an LED fluorescent ceramic light source, fixedly mounted at the front of the substrate and located inside the lamp tube; the LED fluorescent ceramic light source comprises a central light-emitting area and a peripheral light-emitting area, the central light-emitting area and the peripheral light-emitting area being spliced ​​together, the central light-emitting area and the peripheral light-emitting area being able to emit light independently of each other, and the color temperature of the light emitted by the central light-emitting area and the peripheral light-emitting area being different. The advantages of the present invention are that the central light-emitting area and the peripheral light-emitting area form a light source with an adjustable light-emitting surface, so that the light-emitting angle of the lamp changes, forming a light spot with adjustable size; the central light-emitting area and the peripheral light-emitting area respectively emit light of different color temperatures, forming light spots of different color temperatures.

Description

Technical Field

[0001] The invention relates to lighting equipment, in particular to a color-changing searchlight with an LED fluorescent ceramic light source. Background Art

[0002] 1. Currently, the high-power lighting searchlights on the domestic and foreign markets are high-pressure gas discharge lamps (HID xenon lamps for short). The disadvantages of this type of lamp are slow start-up, serious light decay, short life, large size, poor shock resistance, and contain harmful substances such as mercury.

[0003] 2. Focusing lamps on the market are often difficult to adjust, often achieved by moving individual lenses or lens groups. This requires mechanical parts and movement, such as the zoom operation of flashlights and small spotlights. This method is complex and has high structural requirements. It is particularly difficult to implement on large lamps. It also has to consider dust and water resistance, as well as mechanical movement, which is costly.

[0004] 3. The existing LED searchlights on the market have low wattage, large angle, and short irradiation distance. The main reason is that the larger the luminous surface of traditional LED light sources at the same power, the larger the size of the light distribution structure.

[0005] 4. The existing lamps have a single color temperature, which makes it difficult to use them in both foggy and clear weather, resulting in a poor user experience. Summary of the Invention

[0006] The technical problem to be solved by the present invention is to provide a color-changing searchlight with an LED fluorescent ceramic light source, which can emit light of different color temperatures.

[0007] The present invention is implemented as follows: an LED fluorescent ceramic light source color-changing searchlight, comprising:

[0008] a lamp tube with a lens therein;

[0009] A base plate is fixed to the rear end of the lamp tube;

[0010] An LED fluorescent ceramic light source is fixed on the front of the substrate and located inside the lamp tube;

[0011] The LED fluorescent ceramic light source includes a central light-emitting area and a peripheral light-emitting area, the central light-emitting area and the peripheral light-emitting area are spliced, the central light-emitting area and the peripheral light-emitting area can emit light independently of each other, and the color temperature of the light emitted by the central light-emitting area and the peripheral light-emitting area is different.

[0012] Furthermore, the peripheral light-emitting area is an integral light-emitting area without any gaps.

[0013] Furthermore, the central light-emitting area is circular, and the peripheral light-emitting area is annular.

[0014] Furthermore, the light emitted by the central light-emitting area is warm light, and the color temperature of the light emitted by the central light-emitting area is lower than the color temperature of the light emitted by the peripheral light-emitting area.

[0015] Furthermore, there are more than two peripheral light-emitting areas, each of which can emit light independently, the color temperature of the light emitted by each peripheral light-emitting area is different, and two adjacent peripheral light-emitting areas are spliced.

[0016] Furthermore, the peripheral light-emitting area is divided into a plurality of light-emitting blocks, and each light-emitting block can emit light of a different color temperature.

[0017] Furthermore, it also includes: an LED driver, a first switch and a second switch, the central light-emitting area includes a first series of LED lamps, the peripheral light-emitting area includes a second series of LED lamps, the first series of LED lamps are electrically connected to the LED driver through the first switch, and the second series of LED lamps are electrically connected to the LED driver through the second switch.

[0018] Furthermore, it also includes:

[0019] a control panel, electrically connected to the first switch and the second switch;

[0020] The first switch and the second switch are both relays.

[0021] Furthermore, the lens is a Fresnel lens.

[0022] Furthermore, the substrate has a step block, and the central light-emitting area and the peripheral light-emitting area are respectively located on different planes of the step block.

[0023] The advantages of the present invention are: 1. The central light-emitting area and the peripheral light-emitting area form a light source with an adjustable light-emitting surface size, which changes the light-emitting angle of the lamp and forms a light spot with adjustable size. 2. The central light-emitting area and the peripheral light-emitting area respectively emit light of different color temperatures to form light spots of different color temperatures. 3. The seamless overall light-emitting area prevents the appearance of intermittent shadows in the generated light spots. 4. LED fluorescent ceramic light source is used as the light engine, which has good heat dissipation effect and can drive higher power and long irradiation distance. 5. Light of different color temperatures can be emitted at the same time to achieve a mixed light effect. 6. The working status of the central light-emitting area and the peripheral light-emitting area is controlled by the control panel, which is easy to operate. 7. The Fresnel lens is used to effectively improve the focusing effect. 8. The central light-emitting area and the peripheral light-emitting area located in different planes have different distances from the lens, so that the change in the light-emitting angle is greater. BRIEF DESCRIPTION OF THE DRAWINGS

[0024] The present invention will be further described below with reference to the accompanying drawings and embodiments.

[0025] Figure 1 It is an exploded view of the parts of the LED fluorescent ceramic light source color-changing searchlight of the present invention.

[0026] Figure 2 This is a front view of the appearance of the LED fluorescent ceramic light source color-changing searchlight of the present invention.

[0027] Figure 3 yes Figure 2 Right view of .

[0028] Figure 4 This is a schematic front view of the structure of the LED fluorescent ceramic light source in the present invention.

[0029] Figure 5 yes Figure 4 Top view of .

[0030] Figure 6 It is a connection diagram of the LED driver in the present invention.

[0031] Figure 7 It is a schematic diagram of the change of the light output angle of the lamp in the present invention.

[0032] Figure 8a This is a schematic diagram of the overall luminous area without intervals in the present invention. Figure 1 .

[0033] Figure 8b This is a schematic diagram of the overall luminous area without intervals in the present invention. Figure 2 .

[0034] Figure 8c This is a schematic diagram of the overall luminous area without intervals in the present invention. Figure 3 .

[0035] Figure 9 It is a schematic diagram of light sources of multiple peripheral light-emitting areas in the present invention.

[0036] Figure 10 It is a schematic diagram of a light source in which the peripheral light-emitting area is divided into multiple light-emitting blocks in the present invention.

[0037] Figure 11 It is a schematic diagram of the positions of the central light-emitting area and the peripheral light-emitting area on the step block in the present invention.

[0038] Figure numerals: lamp tube 1; lens 2; substrate 3; LED fluorescent ceramic light source 4; LED chip layer 41; transparent fluorescent ceramic layer 42; central light-emitting area 43; peripheral light-emitting area 44; light-emitting block 441; LED driver 5; first switch 51; second switch 52; first series-connected LED lamp 53; second series-connected LED lamp 54; glass plate 6; glass waterproof ring 61; fastener 62; radiator 7; lamp tube waterproof ring 71; bracket 8; handle 9; step block 10. DETAILED DESCRIPTION

[0039] The embodiment of the present invention provides an LED fluorescent ceramic light source color-changing searchlight, which solves the disadvantage of the single color temperature of the light emitted by the lamp in the prior art and achieves the technical effect of changing the color temperature and light emission angle of the lamp.

[0040] The technical solution in the embodiment of the present invention is to solve the above-mentioned shortcomings, and the overall idea is as follows: in the same light distribution system, the larger the light-emitting surface of the light source, the larger the light-emitting angle of the lamp; the central light-emitting area and the peripheral light-emitting area form a light source with an adjustable light-emitting surface, and an LED fluorescent ceramic light source is adopted and applied to the lamp; when only the central light-emitting area emits light, a small light spot is formed, which is used for long-distance projection; when the peripheral light-emitting area emits light, the light-emitting surface of the light source becomes larger, so that the light-emitting angle of the lamp becomes larger, and a large light spot is formed on the object, which is used for close-range projection; the light color temperature of the large light spot and the small light spot is different, which is convenient for identification.

[0041] Existing lamps produce different light spot sizes by moving the light source or lens to change the distance between the light source and the lens through zooming. However, this invention adopts a unique approach by adjusting the light source's emitting surface and changing the lamp's light output angle to achieve the effect of producing light spots of different sizes and different color temperatures.

[0042] In order to better understand the above technical solution, the above technical solution will be described in detail below with reference to the accompanying drawings and specific implementation methods.

[0043] See Figures 1 to 8c , Example 1 of the LED fluorescent ceramic light source color-changing searchlight of the present invention.

[0044] The present invention includes: a lamp tube 1, which is provided with a lens 2; the lens 2 is a Fresnel lens, which effectively improves the focusing effect. A substrate 3 is fixed to the rear end of the lamp tube 1; the substrate 3 is made of aluminum, copper, ceramic and other materials. An LED fluorescent ceramic light source 4 is fixed to the front of the substrate 3 and is located inside the lamp tube 1; the LED fluorescent ceramic light source 4 is used as a light engine, which has a good heat dissipation effect and can drive higher power and a long irradiation distance; the LED fluorescent ceramic light source 4 includes an LED chip layer 41 and a transparent fluorescent ceramic layer 42. The light emitted by the LED passes through the transparent fluorescent ceramic and is emitted. For example, the blue light emitted by the LED forms white light after passing through the yellow transparent fluorescent ceramic; LEDs of different luminous colors or transparent fluorescent ceramics of different colors are provided to produce light of different color temperatures. The LED fluorescent ceramic light source 4 is located near the focal position of the lens 2.

[0045] The LED fluorescent ceramic light source 4 includes a central light emitting area 43 and a peripheral light emitting area 44. The central light emitting area 43 and the peripheral light emitting area 44 are spliced ​​together. The peripheral light emitting area 44 is an integral light emitting area without any gaps. Figures 8a to 8c Any of the shapes shown in the figure, these shape areas are continuous and there is no gap; the whole luminous area without gaps prevents the occurrence of intermittent shadows in the generated light spots. More specifically, in this embodiment, as Figure 5 As shown, the central luminous area 43 is circular, and the peripheral luminous area 44 is annular. The area of ​​the central luminous area 43 is larger than that of the peripheral luminous area 44. Specifically, the circular diameter d of the central luminous area 43 is 25 mm, and the annular radial length w of the peripheral luminous area 44 is 5 mm.

[0046] The central luminous area 43 and the peripheral luminous area 44 can emit light independently of each other, that is, the lamp has the following four lighting states: ① The central luminous area 43 emits light, and the peripheral luminous area 44 does not emit light; ② The central luminous area 43 does not emit light, and the peripheral luminous area 44 emits light; ③ Both the central luminous area 43 and the peripheral luminous area 44 emit light; ④ Neither the central luminous area 43 nor the peripheral luminous area 44 emits light. In the same light distribution system, the larger the light-emitting surface of the light source, the larger the light output angle of the lamp; the central luminous area 43 and the peripheral luminous area 44 form a light source with an adjustable light-emitting surface. When mainly used for long-distance projection, only the central luminous area 43 emits light. After the light passes through a fixed light distribution system such as a lamp tube and a Fresnel lens, the light output angle θ1 of the lamp is small, forming a small light spot; relatively, a focusing effect is formed. When close-range projection is required, the peripheral light-emitting area 44 emits light, the light-emitting surface of the light source becomes larger, and after the light passes through a fixed light distribution system such as a lamp tube and a Fresnel lens, the light output angle θ2 of the lamp is larger, forming a large light spot, which relatively forms a scattered light effect; when the central light-emitting area 43 does not emit light and the peripheral light-emitting area 44 emits light, the brightness of the large light spot formed is dim; when both the central light-emitting area 43 and the peripheral light-emitting area 44 emit light, the large light spot formed is brighter.

[0047] The color temperature of the light emitted by the central light-emitting area 43 and the peripheral light-emitting area 44 is different. The color of the small light spot and the large light spot formed in this way is also different, which is convenient for identification. The light emitted by the central light-emitting area 43 is warm light, and the color temperature of the light emitted by the central light-emitting area 43 is lower than the color temperature of the light emitted by the peripheral light-emitting area 44. For example, in a construction site, in foggy weather, the central light-emitting area 43 emits warm light such as yellow light, forming a small light spot of concentrated light, similar to the effect of fog lights; in clear weather, the peripheral light-emitting area 44 emits white light, forming a large light spot of scattered light, increasing the irradiation area; according to the color of the light, it is easier for workers to identify the currently turned-on lighting conditions.

[0048] The LED driver 5 includes a first switch 51 and a second switch 52. The central light-emitting area 43 includes a first series of LED lamps 53, and the peripheral light-emitting area 44 includes a second series of LED lamps 54. The first series of LED lamps 53 are electrically connected to the LED driver 5 via the first switch 51, and the second series of LED lamps 54 are electrically connected to the LED driver 5 via the second switch 52. When the LED driver 5 is powered on, the first and second switches 51 and 52 can be push-button switches, allowing operators to manually select whether to turn on the central light-emitting area 43 or the peripheral light-emitting area 44. A control panel is electrically connected to the first and second switches 51 and 52; both are relays. Operators remotely control the on and off states of the first and second switches 51 and 52 through the control panel, thereby controlling the lighting state of each light-emitting area.

[0049] A glass plate 6 is fixed to the front end of the lamp tube 1; a glass waterproof ring 61 is located between the glass plate 6 and the lamp tube 1; fasteners 62 secure the glass plate 6 to the lamp tube 1. A heat sink 7 is fixedly connected to the back of the base plate 3; a lamp tube waterproof ring 71 is located between the heat sink 7 and the lamp tube 1; the waterproof ring effectively prevents water from entering the lamp tube 1, improving lighting stability. The heat sink 7 dissipates heat from the base plate 3, allowing the originally arranged light sources to be overloaded and driven to a higher power. Under the same conditions, the greater the lighting power of the same light source, the greater the output luminous flux, and the farther the light is projected.

[0050] Existing lamps change the distance between the light source and the lens by moving the light source or the lens, and produce light spots of different sizes by zooming. The present invention adopts a unique idea, and changes the light-emitting angle of the lamp by adjusting the light-emitting surface of the light source, so as to achieve the effect of producing light spots of different sizes, and the color temperature of the irradiated light is different. The LED fluorescent ceramic light source color-changing searchlight of the present invention does not require extra focusing mechanical parts, which reduces the cost accordingly, and the overall quality is reliable. It adopts LED fluorescent ceramic light source, and drives the small light-emitting surface to a high power, which improves the interest rate of the lamp. The light-emitting angle of the small light-emitting surface becomes smaller, and can irradiate farther. It is fully functional and can switch between far and near projection distances. It can also be used for lighting effects such as music light shows. The present invention is applied to large lamps, and it is very convenient to adjust the light spot of large lamps.

[0051] See Figure 9 , Example 2 of the LED fluorescent ceramic light source color-changing searchlight of the present invention.

[0052] In this embodiment, there are two or more peripheral luminous zones 44, each of which can independently emit light. Each of the peripheral luminous zones 44 emits light of a different color temperature, and two adjacent peripheral luminous zones 44 are spliced ​​together. This expands the adjustable range of the light source's luminous surface, creating two or more different light spot sizes, expanding its application range. Each light spot has a different color temperature, creating a colorful lighting effect. For other details not described, please refer to Example 1 of the present invention.

[0053] See Figure 10 , Example 3 of the LED fluorescent ceramic light source color-changing searchlight of the present invention.

[0054] In this embodiment, the peripheral luminous area 44 is divided into multiple luminous blocks 441, each of which can emit light of a different color temperature. The peripheral luminous area 44 can simultaneously emit light of multiple color temperatures. For example, seven luminous blocks 441 can each emit seven colors, creating a colorful mixed light effect. For other details not described, please refer to Example 1 of the present invention.

[0055] See Figure 11 , Example 4 of the LED fluorescent ceramic light source color-changing searchlight of the present invention.

[0056] In this embodiment, the substrate 3 has a stepped block 10, and the central light-emitting area 43 and the peripheral light-emitting area 44 are located on different planes of the stepped block 10. The central light-emitting area 43 and the peripheral light-emitting area 44 are at different distances from the lens 2, thereby increasing the variation in the light output angle. When switching between the central light-emitting area 43 and the peripheral light-emitting area 44, the distance from the light source to the lens 2 changes, which acts as a zoom and creates a more diverse light spot lighting effect. For other details not described, please refer to Example 1 of the present invention.

[0057] Although the specific embodiments of the present invention are described above, those skilled in the art should understand that the specific embodiments described are merely illustrative and are not intended to limit the scope of the present invention. Equivalent modifications and changes made by those skilled in the art in accordance with the spirit of the present invention should be included within the scope of protection of the claims of the present invention.

Claims

1. An LED fluorescent ceramic light source color-changing searchlight, characterized in that: include: a lamp tube with a lens therein; A base plate is fixed to the rear end of the lamp tube; An LED fluorescent ceramic light source is fixed on the front of the substrate and located inside the lamp tube; The LED fluorescent ceramic light source includes a central light-emitting area and a peripheral light-emitting area, the central light-emitting area and the peripheral light-emitting area are spliced ​​together, the central light-emitting area and the peripheral light-emitting area can emit light independently of each other, and the color temperature of the light emitted by the central light-emitting area and the peripheral light-emitting area is different; The peripheral light-emitting area is divided into a plurality of light-emitting blocks, and each light-emitting block can emit light of different color temperatures; The substrate has a step block, the central light-emitting area and the peripheral light-emitting area are respectively located on different planes of the step block, and the distances from the central light-emitting area to the lens are different from those from the peripheral light-emitting area; The lens is a Fresnel lens.

2. The LED fluorescent ceramic light source color-changing searchlight according to claim 1, characterized in that: The peripheral light-emitting area is an entire light-emitting area without any intervals.

3. The LED fluorescent ceramic light source color-changing searchlight according to claim 2, characterized in that: The central light-emitting area is circular, and the peripheral light-emitting area is annular.

4. The LED fluorescent ceramic light source color-changing searchlight according to claim 1, characterized in that: The light emitted by the central light-emitting area is warm light, and the color temperature of the light emitted by the central light-emitting area is lower than the color temperature of the light emitted by the peripheral light-emitting area.

5. The LED fluorescent ceramic light source color-changing searchlight according to claim 1, characterized in that: There are more than two peripheral light-emitting areas, each of which can emit light independently, and the color temperature of the light emitted by each peripheral light-emitting area is different. Two adjacent peripheral light-emitting areas are spliced.

6. The LED fluorescent ceramic light source color-changing searchlight according to claim 1, characterized in that: Also includes: An LED driver, a first switch and a second switch, the central light-emitting area includes a first series of LED lamps, the peripheral light-emitting area includes a second series of LED lamps, the first series of LED lamps are electrically connected to the LED driver through the first switch, and the second series of LED lamps are electrically connected to the LED driver through the second switch.

7. The LED fluorescent ceramic light source color-changing searchlight according to claim 6, characterized in that: Also includes: a control panel, electrically connected to the first switch and the second switch; The first switch and the second switch are both relays.

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