LED lamp bead with mixed light emitting function

Abstract

The LED lamp bead with the mixed light emitting function comprises a cylindrical shell, the tail end of the shell is sealed through a tail cover, a light emitting source with cold and warm light sources arranged at intervals is rotationally arranged in the center of the tail cover, the top end of the light emitting source communicates with a light reflecting bowl, and a grating-shaped shielding coating is arranged between the light reflecting bowl and the light emitting source. A focusing cylinder is arranged at the top of the light reflecting bowl and connected with the shell in a sleeved mode, the focusing cylinder is driven by a driving piece on one side of the shell to slide in the axial direction of the shell, and meanwhile the driving piece is in transmission connection with the light emitting source to conduct circumferential angle driving on the light emitting source. The distance difference between the adjacent cold and warm light sources and the shielding position of the grating is adjusted, the shielding proportion of the cold and warm light sources is distributed to adjust the color temperature, the angle of the light emitting source is mechanically synchronized along with adjustment of the focusing barrel, then stable linkage is achieved, color temperature illusion caused by brightness is compensated, more accurate illumination control is achieved, and good development prospects are achieved.

Description

Technical Field

[0001] The invention relates to the field of LED lighting, and in particular to an LED lamp bead with a mixed light-emitting function. Background Art

[0002] Existing light sources are usually composed of an LED wick and a lens mixed with fluorescent powder. The light-emitting principle is to use the blue light LED wick to emit blue light. When the blue light passes through the lens, it will excite the yellow fluorescent powder to obtain a mixed light that is close to white light. It is widely used in many fields such as indoor and outdoor lighting, backlight, etc.

[0003] However, in certain application scenarios, such as stage lighting, there will be some special requirements, such as the zoom adjustment effect of lighting. As the light is focused, the brightness difference between the corresponding central lighting position and the edge position becomes larger, which will cause the visual color contrast effect to be enhanced. Although the actual color temperature has not changed, it is similar to the effect of color temperature change, thus affecting the stage effect.

[0004] Therefore, a hybrid light-emitting LED lamp bead is needed that can simultaneously adjust the color temperature during the zooming process to compensate for the visual effect to solve the above problems. Summary of the invention

[0005] The purpose of the present invention is to provide an LED lamp bead with mixed light emitting function.

[0006] To achieve the above object, the present invention provides the following technical solutions: An LED lamp bead with a mixed luminous function comprises a cylindrical shell, the tail end of the shell is closed by a tail cover, a light source with cold and warm light sources arranged at intervals is rotatably arranged in the center of the tail cover, the top of the light source is connected to a reflective bowl, a grid-shaped shielding coating is arranged between the reflective bowl and the light source, a focusing tube is provided on the top of the reflective bowl and is sleeved with the shell, and is driven to slide along the axial direction of the shell by a driving member on one side of the shell, and at the same time, the driving member is connected to the light source for transmission to drive the light source in a circumferential angle.

[0007] As a further solution of the present invention: the focusing tube includes a shell, a lens and a top cover, the lens is fixed to the front end of the shell by a top cover buckle connected to the shell, and a slot is recessed at the front end of the top cover for placing a color filter.

[0008] As a further solution of the present invention: a columnar light guide column is connected between the light source and the reflective bowl, the light guide column is plugged into the bottom center of the reflective bowl, and the side surface of the light guide column is sprayed with a mirror coating.

[0009] As a further solution of the present invention: the bottom edge of the light guide column is chamfered, the chamfered bottom surface is sprayed with a mirror coating, the chamfered edge is sprayed with a grid-shaped mirror coating, and the light-emitting points on the light source are set corresponding to the grid.

[0010] As a further solution of the present invention: a groove is made at the light-emitting point on the light source, and the light-emitting point is arranged in the groove; As a further solution of the present invention: the surface of the groove is also treated by spraying a mirror coating.

[0011] As a further solution of the present invention: the driving part includes a driving motor, a driving shaft and a reduction shaft. The driving motor is fixed on the outside of the outer shell, and the output end is connected to the driving shaft with a thread. The front end of the driving shaft is connected to the focusing barrel with a threaded transmission. The inner side of the outer shell is rotatably provided with a reduction shaft, and the two ends of the reduction shaft are respectively connected to the driving shaft and the light source by angle transmission.

[0012] As a further solution of the present invention: the light source and the reduction shaft are indirectly transmitted through a clutch, and the clutch is controlled by an electric control push rod fixed at the bottom of the tail cover to contact or separate with the light source and the reduction shaft to achieve connection or disconnection of the light source and the reduction shaft transmission.

[0013] As a further solution of the present invention: an independent motor is installed in the center of the bottom cover and is transmission-connected with the light source. Beneficial Effects

[0014] 1. The central rotation of the tail cover of the present invention is provided with a light source in which cold and warm light sources are arranged at intervals. The top of the light source is connected to the reflective bowl. A grid-shaped shielding coating is provided between the reflective bowl and the light source. By arranging the intervals of the cold and warm light sources and coordinating the grid shielding layer on the light source, and adjusting the distance difference between the adjacent cold and warm light sources and the grid shielding position, the shielding ratio of the cold and warm light sources is distributed and adjusted to achieve the adjustment of the cold and warm color temperatures. The angle of the light source is mechanically synchronized with the adjustment of the focusing tube, thereby achieving stable linkage, compensating for the color temperature illusion caused by brightness, and achieving more precise lighting control.

[0015] 2. A columnar light guide column is connected between the light source and the reflective bowl of the present invention. The light guide column is inserted in the center of the bottom of the reflective bowl. The bottom edge of the light guide column is chamfered, and the side surface and the chamfered bottom surface of the light guide column are sprayed with a mirror coating. The chamfered edges are sprayed with a grid-shaped mirror coating. The light-emitting points on the light source are set corresponding to the grid. Through the setting of the light guide column, the light source is emitted at a certain oblique angle, and mirror reflection is performed in the light guide column, so that the light of light sources with different color temperatures is mixed to improve uniformity.

[0016] 3. The light source and the reduction shaft of the present invention are indirectly transmitted through a clutch. The clutch is controlled by an electric push rod fixed at the bottom of the tail cover to contact or separate with the light source and the reduction shaft to achieve the connection or disconnection of the light source and the reduction shaft, thereby achieving free selection of the linkage or disconnection state of zoom and color temperature adjustment to meet different needs. BRIEF DESCRIPTION OF THE DRAWINGS

[0017] Figure 1 It is a cross-sectional view of the overall structure of the present invention.

[0018] Figure 2 It is a schematic diagram of the overall structure of the present invention.

[0019] Figure 3 It is an exploded schematic diagram of the main structure of the present invention.

[0020] Figure 4 It is a schematic diagram of installing the light guide column of the present invention.

[0021] Figure 5 It is a schematic diagram of the light entry position of the light guide column of the present invention.

[0022] Figure 6 It is a schematic diagram of the light source structure of the present invention.

[0023] Figure 7 It is a schematic diagram of the driving member structure of the present invention.

[0024] Figure 8 It is a schematic diagram of the angle driving of the light source of the present invention.

[0025] Figure 1-8 In: 1. Outer shell; 2. Tail cover; 3. Light source; 4. Light guide column; 5. Reflector bowl; 6. Focusing tube; 61. Shell; 62. Lens; 63. Top cover; 7. Driving part; 71. Driving motor; 72. Driving shaft; 73. Reduction shaft; 74. Clutch; 75. Electric control push rod; 8. Independent motor. DETAILED DESCRIPTION

[0026] The following will be combined with the accompanying drawings in the present invention Figure 1-Figure 8 , clearly and completely describe the specific technical solutions of the present invention; See also Figure 1-Figure 8 , Figure 1 It is a schematic diagram of the overall structure of an embodiment of the present invention; Figure 2 It is a schematic diagram of the overall structure of the present invention; Figure 3 It is an exploded schematic diagram of the main structure of the present invention; Figure 4 It is a schematic diagram of installing the light guide column of the present invention; Figure 5 This is a schematic diagram of the light entry position of the light guide column of the present invention; Figure 6 It is a schematic diagram of the structure of the light source of the present invention; Figure 7 It is a schematic diagram of the structure of the driving member of the present invention; Figure 8 It is a schematic diagram of the angle driving of the light source of the present invention.

[0027] The present embodiment provides an LED lamp bead with a mixed light-emitting function, comprising a cylindrical shell 1, the tail end of the shell 1 is closed by a tail cover 2, a light source 3 with cold and warm light sources arranged at intervals is rotatably arranged in the center of the tail cover 2, the top of the light source 3 is connected to a reflective bowl 5, a grid-shaped shielding coating is arranged between the reflective bowl 5 and the light source 3, a focusing tube 6 is provided on the top of the reflective bowl 5 and is sleeved with the shell 1, and is driven by a driving member 7 on one side of the shell 1 to slide along the axial direction of the shell 1, and at the same time, the driving member 7 is connected to the light source 3 for driving the circumferential angle of the light source 3; By setting the intervals between the cold and warm light sources of the light source 3 and coordinating with the grille shielding layer, and by adjusting the distance difference between the adjacent cold and warm light sources and the grille shielding, the shielding ratios of the cold and warm light sources are distributed and adjusted to achieve the adjustment of the cold and warm color temperatures, and the angle of the light source 3 is mechanically synchronized with the adjustment of the focusing tube 6, thereby achieving stable linkage, compensating for the color temperature illusion caused by brightness, and achieving more precise lighting control.

[0028] The focusing tube 6 includes a shell 61, a lens 62 and a top cover 63. The lens 62 is fixed to the front end of the shell 61 by snapping the top cover 63 connected to the shell 61. The front end of the top cover 63 is recessed with a slot for placing a color filter to change the color of light.

[0029] Among them, a columnar light guide column 4 is connected between the light source 3 and the reflective bowl 5, and the light guide column 4 is inserted in the bottom center of the reflective bowl 5. The bottom edge of the light guide column 4 is chamfered, and the side surface and the chamfered bottom surface of the light guide column 4 are sprayed with a mirror coating, and the chamfered edge is sprayed with a grid-shaped mirror coating, and the light-emitting point on the light source 3 is set corresponding to the grid; By setting the light guide column 4, the light source is emitted at a certain oblique angle, and is mirror-reflected in the light guide column 4, so that the light from light sources with different color temperatures is mixed, thereby improving uniformity.

[0030] Furthermore, grooves are made at the light-emitting points on the light source 3, and the light-emitting points are set in the grooves. The surface of the grooves is also sprayed with a mirror coating to reflect the light that enters the groove of the light source 3 through the grille window after passing through the light guide column 4, so that it enters the light guide column 4 again to reduce loss.

[0031] Among them, the driving member 7 includes a driving motor 71, a driving shaft 72 and a reduction shaft 73. The driving motor 71 is fixed on the outside of the outer shell 1, and the output end is connected to a threaded driving shaft 72. The front end of the driving shaft 72 is threadedly connected to the focusing tube 6. A reduction shaft 73 is rotatably arranged on the inner side of the outer shell 1. The two ends of the reduction shaft 73 are respectively connected to the driving shaft 72 and the light source 3 by angle transmission. The reduction transmission is realized by the setting of the reduction shaft 73, thereby ensuring the fine adjustment of the angle of the grid-shaped light source and realizing the control of the color temperature.

[0032] Specifically, the light source 3 and the reduction shaft 73 are indirectly transmitted through the clutch 74. The clutch 74 is controlled by an electric push rod 75 fixed at the bottom of the tail cover 2 to contact or separate with the light source 3 and the reduction shaft 73 to achieve the connection or disconnection of the transmission between the light source 3 and the reduction shaft 73, thereby realizing the free selection of the linkage or disconnection state of zoom and color temperature adjustment to meet different needs.

[0033] Furthermore, an independent motor 8 is installed in the center of the bottom cover and is connected to the light source 3 in a transmission manner, so that the light source 3 can be driven at an independent angle, the color temperature can be adjusted individually, and more lighting needs can be met.

[0034] When the technical solution described in this embodiment is implemented, when the lighting device is focused, the driving motor 71 drives the driving shaft 72 to rotate, and the focusing tube 6 is driven to extend axially along the outer shell 1 through the threaded structure to focus the light. At the same time, the driving shaft drives the light source 3 to rotate at a small angle through the reduction shaft 73, so that a distance difference is generated between the cold and warm light sources spaced apart on the light source 3 and the grille shielding position, and the shielding ratio of the cold and warm light sources is distributed and adjusted to achieve the adjustment of the cold and warm color temperatures, compensate for the color temperature illusion caused by brightness, and achieve more precise lighting control.

Claims

1. An LED lamp bead with mixed luminescence function, characterized in that: include: The outer shell (1) is cylindrical, and the rear end of the outer shell (1) is closed by a rear cover (2); A light source (3), wherein the tail cover (2) is rotatably provided at the center thereof with a light source (3) in which cold and warm light sources are arranged at intervals, the top of the light source (3) is connected to the reflective bowl (5), and a grid-shaped shielding coating is provided between the reflective bowl (5) and the light source (3); A focusing tube (6), the top of the reflective bowl (5) is provided with a focusing tube (6) which is sleeved with the housing (1); The driving member (7) and the focusing tube (6) are driven to slide along the axial direction of the housing (1) by the driving member (7) on one side of the housing (1), and at the same time, the driving member (7) is connected to the light source (3) in a transmission manner to drive the light source (3) in a circumferential angle.

2. The LED lamp bead with mixed light emitting function according to claim 1, characterized in that: The focusing tube (6) comprises a shell (61), a lens (62) and a top cover (63); the lens (62) is fixed to the front end of the shell (61) by means of a buckle of the top cover (63) connected to the shell (61); a slot is concavely provided at the front end of the top cover (63) for placing a color filter.

3. The LED lamp bead with mixed light emitting function according to claim 1, characterized in that: A columnar light guide column (4) is connected between the light source (3) and the reflective bowl (5). The light guide column (4) is plugged into the center of the bottom of the reflective bowl (5). The side surface of the light guide column (4) is sprayed with a mirror coating.

4. The LED lamp bead with mixed light emitting function according to claim 3, characterized in that: The bottom edge of the light guide column (4) is chamfered to a right angle, the chamfered bottom surface is sprayed with a mirror coating, the chamfered edge is sprayed with a grid-shaped mirror coating, and the light-emitting points on the light source (3) are arranged corresponding to the grid.

5. The LED lamp bead with mixed light emitting function according to claim 4, characterized in that: The light source (3) is provided with a groove at the light-emitting point, and the light-emitting point is arranged in the groove.

6. The LED lamp bead with mixed light emitting function according to claim 5, characterized in that: The surface of the groove is also treated with a mirror coating spray.

7. The LED lamp bead with mixed light emitting function according to claim 1, characterized in that: The driving member (7) comprises a driving motor (71), a driving shaft (72) and a reduction shaft (73); the driving motor (71) is fixed to the outside of the housing (1); an output end is connected to a driving shaft (72) having a thread; a front end of the driving shaft (72) is threadedly connected to a focusing tube (6); a reduction shaft (73) is rotatably arranged on the inside of the housing (1); two ends of the reduction shaft (73) are respectively angularly connected to the driving shaft (72) and the light source (3).

8. The LED lamp bead with mixed light emitting function according to claim 7, characterized in that: The light source (3) and the deceleration shaft (73) are indirectly driven via a clutch (74); the clutch (74) is controlled by an electric control push rod (75) fixed at the bottom of the tail cover (2) to contact or separate with the light source (3) and the deceleration shaft (73) to achieve connection or disconnection of the light source (3) and the deceleration shaft (73).

9. The LED lamp bead with mixed light emitting function according to claim 8, characterized in that: An independent motor (8) is installed in the center of the bottom cover and is transmission-connected to the light source (3).

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