A focus-adjustable lamp with adjustable brightness and color temperature

Abstract

The present invention discloses a focus-adjustable lamp with adjustable brightness and color temperature. The lamp comprises an electrical box (1), a lamp arm (2) and a lamp head (3); one end of the lamp arm (2) is fixedly mounted on the bottom of the electrical box (1), and the lamp head (3) is rotatably mounted on the other end of the lamp arm (2); a dimming and color-adjusting electrical appliance (4) is arranged in the electrical box (1); the dimming and color-adjusting electrical appliance (4) is connected to the lamp head (3) through a circuit; the dimming and color-adjusting electrical appliance (4) has a dimming switch (41) and a color-adjusting switch (42) which are independently arranged. The lamp of the present invention integrates a plurality of light control functions into one, realizes the maximum function, has an integrated design of parts, and two sets of switches are independently dimming and color-adjusting controlled to realize full coverage of color and power, and the focusing method is a gear-type focusing; the lamp can directly realize the lamp emitting light corresponding to a plurality of light-emitting angles, colors, and powers through switches and focusing components.

Description

Technical Field

[0001] The invention relates to the field of lamps, and in particular to a focus-adjustable lamp with adjustable brightness and color temperature. Background Art

[0002] In large spaces such as industry and commerce, designers have high requirements for the consistency of functions and appearance of lighting equipment in the same place. Under the premise of unified product appearance, they require diversified functions of lamps and integrated design of parts and components. Lamps with single functions, or single color temperature and brightness, or adjustable color temperature and fixed brightness, or adjustable brightness and fixed color temperature, cannot meet the needs of existing large-scale industrial or commercial activities. Therefore, in order to meet the needs of the market, people have developed lamps with adjustable color temperature and brightness.

[0003] The existing color temperature and brightness adjustable lamps mainly focus on the color temperature and brightness adjustment control by designing color temperature adjustment circuits and brightness adjustment circuits, or setting potentiometer lamps in the circuits. However, the existing color temperature and brightness adjustable lamps still have major defects. Although their designs can achieve the multifunctional integration of color temperature and brightness adjustment, and solve the problem of the single color temperature and brightness adjustment function of the lamps, the adjustment functions of the lamps such as focus adjustment and illumination angle adjustment are still relatively lacking, and still cannot meet the growing market demand.

[0004] Therefore, it is necessary to develop new, more comprehensive and diversified functional lamps with adjustable brightness and color temperature, fundamentally solving the problem of application selection of single lamps for different angles, brightness and color temperatures at the site of use, providing users with more choices and different applications, solving many problems of lamps in various links, and better meeting market demand. Summary of the invention

[0005] The purpose of the present invention is to provide a focus-adjustable lamp with adjustable brightness and color temperature in view of the deficiencies of the prior art. The lamp integrates multiple light control functions and has the integrated features of "three adjustments" including dimming, color adjustment and focus adjustment, realizing maximum functions and integrated parts design. The dimming and color adjustment are controlled by two sets of switches on the dimming and color adjustment appliance to achieve full coverage of color and power, and to achieve precise control of the brightness and color temperature of the lamp. The color temperature accuracy and display brightness are superior to other lamps with a single light control method in the industry, and the focus adjustment method is gear-type focus adjustment; the switch and focus adjustment components can be directly used to realize the lamp emitting lights corresponding to multiple light-emitting angles, colors, and powers.

[0006] The purpose of the present invention is achieved through the following technical solutions.

[0007] A focusable lamp with adjustable brightness and color temperature comprises an electrical box, a lamp arm and a lamp holder; one end of the lamp arm is fixedly mounted on the bottom of the electrical box, and the lamp holder is rotatably mounted on the other end of the lamp arm; a dimming and color-adjusting electrical appliance is arranged in the electrical box; the dimming and color-adjusting electrical appliance is connected to the lamp holder through a circuit; the dimming and color-adjusting electrical appliance has a dimming switch and a color-adjusting switch which are independently arranged.

[0008] Preferably, the dimming switch and the color adjusting switch both have adjustment gears from low to high or from high to low.

[0009] More preferably, the dimming switch can adjust the light from 10% brightness to 100% brightness.

[0010] Preferably, the lamp holder comprises a light source, a lamp tube and a focusing assembly; the light source is arranged in the lamp tube and connected to the dimming and color adjusting appliance through a circuit; the focusing assembly is arranged at the light emitting end of the lamp tube.

[0011] More preferably, the focusing assembly includes a focusing outer ring, a focusing inner ring, a lens and an adjustment ring; the focusing inner ring is rotatably installed inside the focusing outer ring relative to the focusing outer ring; the adjustment ring is fixedly installed at the light-emitting end of the focusing inner ring; the lens is installed between the focusing inner ring and the adjustment ring; and the focusing outer ring is installed in the lamp tube.

[0012] More preferably, the inner surface of the lamp tube is provided with a lamp tube slot; the outer ring surface of the focusing outer ring has an outer ring clamping point that cooperates with the lamp tube slot; through the cooperation between the outer ring clamping point and the lamp tube slot, the focusing outer ring is clamped and installed in the lamp tube.

[0013] Further preferably, the outer ring surface of the focusing inner ring close to the light-emitting end has an inner ring clamping point; the adjusting ring is provided with an adjusting ring clamping groove that cooperates with the inner ring clamping point; through the cooperation between the inner ring clamping point and the adjusting ring clamping groove, the adjusting ring clamping sleeve is fixedly installed on the light-emitting end of the focusing inner ring.

[0014] More preferably, the outer ring surface of the inner focusing ring has a positioning screw hole, and the positioning screw hole is provided with a positioning screw; and the outer focusing ring is provided with a positioning bevel groove for limiting the movable range of the positioning screw.

[0015] More preferably, the axial angle between the positioning bevel groove and the focusing outer ring is 45-60°.

[0016] The positioning bevel groove can limit the range of motion of the positioning screw, so that the rotation angle of the inner focusing ring relative to the outer focusing ring can be limited through the cooperation between the positioning bevel groove and the positioning screw.

[0017] Further preferably, the inner surface of the focusing outer ring is provided with a spring card slot array near the light source; a positioning spring is installed on the end face of the focusing inner ring close to the light source, and the part of the positioning spring away from the installation position is folded; the folded part of the positioning spring is tightly attached to the slot body in the spring card slot array, and the folded part of the positioning spring jumps from one slot body to another in the spring card slot array, corresponding to the change of a focusing gear.

[0018] The cooperation between the positioning bevel and the positioning screw, as well as the cooperation between the positioning spring and the spring slot array, together constitute the rotation adjustment mechanism of the focusing assembly. The movement displacement of the positioning screw in the positioning bevel corresponds to the focusing gear of the positioning spring in the spring slot array. The focusing assembly in the lamp uses gear adjustment. One slot in the spring slot array can correspond to one focusing gear. The number of gears can be set according to demand. The distance parameter between the lens and the light source is adjusted by controlling the dimensional accuracy of the rotating adjustment mechanism, thereby achieving the control of the light-emitting angle of the lamp; this focusing method controls the size of the light spot change by controlling the rotation angle of the focusing assembly. This focusing method is superior to other rotation adjustment methods in terms of accuracy and ease of use; during operation, the positioning spring instantly switches to the required irradiation angle gear, thereby improving the operating efficiency and safety of the operator during high-altitude operations, and better meeting on-site needs.

[0019] More preferably, a light source base is provided in the lamp tube; and the light source is mounted on the light source base.

[0020] More preferably, a heat sink is arranged in the lamp tube at a side of the light source base away from the light emitting end, and a heat dissipation groove is provided on the lamp tube at a position corresponding to the arrangement of the heat sink.

[0021] More preferably, a rear cover is installed at the end of the lamp tube opposite to the light emitting end; the rear cover is rotatably connected to the lamp arm via a rotating bracket.

[0022] Preferably, the voltage of the dimming and color adjusting appliance is mains input.

[0023] Compared with the prior art, the present invention has the following advantages and beneficial effects:

[0024] (1) The lamp of the present invention integrates multiple light control functions into one, and has the characteristics of "three adjustment" functions including dimming, color adjustment and focus adjustment, which maximizes the functions and integrates the parts design. The integrated design effectively reduces the production cost of mold opening, and also reduces the transportation and storage costs;

[0025] (2) The lamp of the present invention controls the dimming and color adjustment through two sets of switches on the dimming and color adjustment appliance, achieving full coverage of color and power, and realizing accurate control of the brightness and color temperature of the lamp. It is superior to other lamps in the industry with a single light control method in terms of color temperature accuracy and display brightness; and the focusing method is a gear-type focusing method, which is convenient and accurately controllable;

[0026] (3) The lamp of the present invention can directly emit lights corresponding to various lighting angles, colors, and powers through switches and focusing components, thereby meeting the user's needs for multi-scenario application sites and achieving the effect of on-site problem solving in multi-scenario applications. BRIEF DESCRIPTION OF THE DRAWINGS

[0027] Figure 1 It is a schematic diagram of the overall structure of a focus-adjustable lamp with adjustable brightness and color temperature according to a specific embodiment of the present invention;

[0028] Figure 2 It is a partial exploded view of the focus-adjustable lamp with adjustable brightness and color temperature of the present invention in a specific embodiment;

[0029] Figure 3 An exploded view of a focus-adjustable lamp with adjustable brightness and color temperature according to a specific embodiment of the present invention;

[0030] Figure 4 It is a partial cross-sectional exploded view of a focus adjustment component in a focus adjustment lamp with adjustable brightness and color temperature according to a specific embodiment of the present invention;

[0031] Figure 5a for Figure 4 An enlarged schematic diagram of A in FIG.

[0032] Figure 5b for Figure 4 A magnified schematic diagram of the A rotation switching focus gear;

[0033] Figure 6a for Figure 4 An enlarged schematic diagram of B in FIG.

[0034] Figure 6b for Figure 4 A magnified schematic diagram of B rotation focusing;

[0035] Figure 7 It is a cross-sectional schematic diagram of a large light-emitting angle of a focus-adjustable lamp with adjustable brightness and color temperature according to a specific embodiment of the present invention;

[0036] Figure 8 It is a cross-sectional schematic diagram of a small light-emitting angle of a focus-adjustable lamp with adjustable brightness and color temperature according to a specific embodiment of the present invention;

[0037] Figures marked: 1-electrical box, 100-three-wire connector, 101-electrical cover, 102-electrical housing, 103-dimmer switch, 104-color switch, 2-lamp arm, 3-lamp head, 30-light source, 300-light source bracket, 31-lamp tube, 310-lamp tube slot, 32-focusing assembly, 320-focusing outer ring, 3201-outer ring card point, 3202-positioning inclined slot, 3203-shrapnel slot Array, 321-focusing inner ring, 3211-inner ring card point, 3212-positioning screw hole, 3213-positioning screw, 3214-positioning spring, 322-lens, 323-adjusting ring, 3231-adjusting ring card slot, 3232-step, 33-light source base, 34-heat sink, 35-heat sink, 36-back cover, 4-dimming and color adjusting appliance, 41-dimming switch, 42-color adjusting switch, 5-rotating bracket. DETAILED DESCRIPTION

[0038] The technical solution of the present invention is further described in detail below in conjunction with specific embodiments and drawings, but the protection scope and implementation methods of the present invention are not limited thereto.

[0039] Example 1

[0040] A focus-adjustable lamp with adjustable brightness and color temperature in this embodiment, such as Figure 1~Figure 3 As shown, the focusable lamp with adjustable brightness and color temperature includes an electrical box 1, a lamp arm 2 and a lamp head 3; wherein one end of the lamp arm 2 is fixedly mounted on the bottom of the electrical box 1, and the lamp head 3 is rotatably mounted on the other end of the lamp arm 2. In this embodiment, the lamp head 3 can be rotated up and down along the axis of the lamp arm 2 to adjust the irradiation position of the light. A dimming and color-adjusting electrical appliance 4 is arranged in the electrical box 1; the dimming and color-adjusting electrical appliance 4 is connected to the lamp head 3 through a circuit; and the dimming and color-adjusting electrical appliance 4 has a dimming switch 41 and a color-adjusting switch 42 which are independently arranged.

[0041] In this embodiment, the electrical box 1 includes an electrical cover 101 and an electrical housing 102 which are molded together. The electrical housing 102 has a slot for placing the dimming and color-adjusting electrical appliance 4. The dimming and color-adjusting electrical appliance 4 is placed in the slot of the electrical housing 102 and is molded closed by the electrical cover 101. In addition, the slot wall of the electrical housing 102 is provided with a separate dimming switch port 103 and a color-adjusting switch port 104. The switch button of the dimming switch 41 on the dimming and color-adjusting electrical appliance 4 extends out of the dimming switch port 103, and the switch button of the color-adjusting switch 42 on the dimming and color-adjusting electrical appliance 4 extends out of the color-adjusting switch port 104. A three-wire connector 100 is also provided on the top of the electrical cover 101 for connecting the dimming and color-adjusting electrical appliance 4 with an external line. The voltage connected to the three-wire connector 100 is the mains input.

[0042] Both the dimming switch 41 and the color adjustment switch 42 have adjustment gears from low to high or from high to low, wherein the dimming switch 41 can adjust the light from 10% brightness to 100% brightness.

[0043] See Figure 3 , Figure 7 and Figure 8 As shown, in the focus-adjustable lamp with adjustable brightness and color temperature of this embodiment, the lamp head 3 includes a light source 30 , a lamp tube 31 and a focus-adjusting component 32 .

[0044] Among them, the light source 30 is arranged in the lamp tube 31 and connected to the dimming and color adjustment appliance 4 through the line, and the focusing component 32 is arranged at the light output end of the lamp tube 31. The light source 30 has two chips with different color temperatures, and the circuits connecting the two color temperature chips and the color adjustment switch 42 are in parallel. The electrical voltage is input from the mains. By adjusting the color adjustment switch 42, the current ratio passing through the two color temperature chips can be adjusted, and the two circuits are output to control the dual color temperature light source, thereby realizing the adjustment of the light color temperature. The connection between the light source 30 and the dimming switch 41 is an independent circuit. By adjusting the dimming switch 41, the size of the current output can be controlled to realize the dimming function. The two sets of photoelectric parameters are matrix-crossed to achieve full coverage of color and power, and realize accurate control of the brightness and color temperature of the lamp.

[0045] In addition, in this embodiment, a light source base 33 is provided in the lamp tube 31, and the light source 30 is installed on the light source base 33 through a light source bracket 300, so that the light source 30 is arranged in the lamp tube 31. A heat sink 34 is provided in the lamp tube 31, on the side of the light source base 33 away from the light emitting end, for emitting light and dissipating heat of the light source 30, and a heat dissipation groove 35 is provided on the lamp tube 31 corresponding to the location of the heat sink 34. At the same time, a rear cover 36 is installed at the end of the lamp tube 31 opposite to the light emitting end, and the rear cover 36 is rotatably connected to the lamp arm 2 through a rotating bracket 5, so as to realize the rotatable connection between the lamp head 3 and the lamp arm 2.

[0046] Further, see Figure 3 As shown, the focusing assembly 32 includes a focusing outer ring 320, a focusing inner ring 321, a lens 322 and an adjusting ring 323; wherein the focusing inner ring 321 is rotatably installed inside the focusing outer ring 320 relative to the focusing outer ring 320, the adjusting ring 323 is fixedly installed at the light emitting end of the focusing inner ring 321, the lens 322 is installed between the focusing inner ring 321 and the adjusting ring 323, and the focusing outer ring 320 is installed in the lamp tube 31.

[0047] The inside of the adjusting ring 323 has a step 3232 facing the inner focusing ring 321. The lens 322 is in the shape of a bowl, and the bottom of the bowl is open, and the edge of the bowl mouth corresponds to the step 3232. The inner focusing ring 321 is an annular body adapted to the shape of the lens 322, and the diameter of the part close to the light-emitting end is larger than the diameter of the bowl mouth of the lens 322, and the diameter of the part away from the light-emitting end is smaller than the diameter of the bottom of the bowl of the lens 322, so that the lens 322 can be accommodated therein and does not pass through the end away from the light-emitting end. When the adjusting ring 323 is sleeved and fixedly installed on the light-emitting end of the inner focusing ring 321, the step 3232 on the adjusting ring 323 can just press against the edge of the bowl mouth of the lens 322, and the bottom of the bowl of the lens 322 abuts against the inside of the inner focusing ring 321 away from the light-emitting end, so that the lens 322 is fixedly installed between the adjusting ring 323 and the inner focusing ring 321.

[0048] The outer ring surface of the inner focusing ring 321 near the light emitting end is provided with an inner ring clamping point 3211; the adjusting ring 323 is provided with an adjusting ring clamping groove 3231 which matches with the inner ring clamping point 3211; through the cooperation between the inner ring clamping point 3211 and the adjusting ring clamping groove 3231, the adjusting ring 323 is clamped and fixedly sleeved and installed at the light emitting end of the inner focusing ring 321. In this embodiment, there are three inner ring clamping points 3211 on the outer ring surface of the inner focusing ring 321 near the light emitting end, and the three inner ring clamping points 3211 are evenly distributed on the outer ring surface of the inner focusing ring 321, the angle between any two adjacent inner ring clamping points 3211 is 120°, and they are located in the same cross-sectional plane of the inner focusing ring 321, and correspondingly, there are three adjusting ring clamping grooves 3231 provided on the adjusting ring 323. The adjusting ring 323 is fixedly mounted on the light-emitting end of the inner focusing ring 321, and when the adjusting ring 323 is rotated to adjust the focus, the inner focusing ring 321 can be directly driven to rotate. In addition, the outer surface of the adjusting ring 323 has a thin strip-shaped protrusion along the axial direction, which can increase the friction force, make the focusing operation feel good, and make the focusing operation more convenient and quick.

[0049] See Figure 3 and Figure 4As shown, the outer ring surface in the middle of the inner focusing ring 321 has a positioning screw hole 3212, and a positioning screw 3213 is installed on the positioning screw hole 3212; the outer focusing ring 320 is provided with a positioning bevel 3202 for limiting the range of motion of the positioning screw 3213. Moreover, in this embodiment, the axial angle between the positioning bevel 3202 and the outer focusing ring 320 is 45~60°. In this embodiment, there are three positioning screw holes 3212 on the outer ring surface of the inner focusing ring 321, and the three positioning screw holes 3212 are evenly distributed on the outer ring surface of the inner focusing ring 321. The angle between any two adjacent positioning screw holes 3212 is 120°, and they are located in the same cross-sectional plane of the inner focusing ring 321. Correspondingly, there are three positioning screws 3213, and the number of positioning bevel 3202 provided on the outer focusing ring 320 is also correspondingly three. See. Figure 5a and Figure 5b As shown, during the focusing process, when the inner focusing ring 321 rotates relative to the outer focusing ring 320, due to the cooperation between the positioning bevel groove 3202 and the positioning screw 3213, and the angle between the positioning bevel groove 3202 and the axial direction of the outer focusing ring 320, the inner focusing ring 321 will be displaced along the axial direction and the axial rotation direction relative to the outer focusing ring 320, and the displacement along the axial direction will change the distance between the lens 322 and the light source 30. Moreover, the length of the positioning bevel groove 3202 is set according to the axial angle between the positioning bevel groove 3202 and the outer focusing ring 320 in combination with the focusing limit.

[0050] See Figure 3 and Figure 4 As shown, a spring clip slot array 3203 is provided on the inner surface of the focusing outer ring 320 near the light source 30; a positioning spring clip 3214 is installed on the end face of the focusing inner ring 321 near the light source, and the portion of the positioning spring clip 3214 away from the installation portion is folded; the folded portion of the positioning spring clip 3214 is tightly attached to the slot body in the spring clip slot array 3203, and the folded portion of the positioning spring clip 3214 jumps from one slot body to another in the spring clip slot array 3203, corresponding to a change in the focusing gear. In this embodiment, there are three positioning spring clips 3214 installed on the end face of the focusing inner ring 321 near the light source, and the three positioning spring clips 3214 are evenly distributed on the end face of the focusing inner ring 321 near the light source, and the angle between any two adjacent positioning spring clips 3214 is 120°. Correspondingly, there are three spring clip slot arrays 3203 provided on the inner surface of the focusing outer ring 320. See. Figure 6a and Figure 6bAs shown, during the focusing process, when the inner focusing ring 321 rotates relative to the outer focusing ring 320, the inner focusing ring 321 will generate displacement along the axial direction and the axial rotation direction relative to the outer focusing ring 320, and the displacement along the axial rotation direction causes the folded part of the positioning spring 3214 to change the position in the spring slot array 3203.

[0051] For the installation method of the outer focusing ring 320 in the lamp tube 31, see Figure 2 and Figure 3 As shown, the inner surface of the lamp tube 31 is provided with a lamp tube slot 310; the outer surface of the focusing outer ring 320 has an outer ring clamping point 3201 that matches the lamp tube slot 310; through the cooperation between the outer ring clamping point 3201 and the lamp tube slot 310, the focusing outer ring 320 is clamped and installed in the lamp tube 31. In this embodiment, there are three outer ring clamping points 3201 on the outer surface of the focusing outer ring 320, and the three outer ring clamping points 3201 are evenly distributed on the outer surface of the focusing outer ring 320, and the angle between any two adjacent outer ring clamping points 3201 is 120°, and the lamp tube slot 310 is an annular groove provided along the annular inner surface of the lamp tube 31.

[0052] The focusing inner ring 321 can be rotatably installed in the focusing outer ring 320 relative to the focusing outer ring 320 through the cooperation between the positioning spring piece 3214 and the spring piece slot array 3203 and the cooperation between the positioning screw 3213 and the positioning bevel slot 3202, and the adjusting ring 323 is fixedly installed on the light-emitting end of the focusing inner ring 321 through the cooperation between the inner ring card point 3211 and the adjusting ring card slot 3231. At the same time, the lens 322 is fixedly installed between the adjusting ring 323 and the focusing inner ring 321, and then installed in the lamp tube 31 through the engagement of the focusing outer ring 320, thereby realizing the setting of the focusing component 32 at the light-emitting end of the lamp tube 3. The adjusting ring 323 is fixedly mounted on the light-emitting end of the inner focusing ring 321 and extends out of the light-emitting end of the lamp tube 3. When focusing is required, the inner focusing ring 321 can be driven to rotate relative to the outer focusing ring 320 by directly rotating the adjusting ring 323. The positioning spring 3214 on the inner focusing ring 321 can jump in the spring slot array 3203 to change the focusing position. At the same time, the positioning screw 3213 is displaced in the positioning bevel groove 3202 to adjust the distance between the lens 322 and the light source 30, thereby completing the focusing of the lamp and providing a suitable light emission angle and the size of the light spot of the emitted light.

[0053] During the focusing process of the lamp, the focusing inner ring 321 converts the horizontal rotational motion into the motion along the light emitting direction of the lens under the cooperation of the positioning screw 3213 and the positioning bevel groove 3202, and controls the rotation angle of the assembly through the cooperation of the positioning spring 3214 and the spring slot array 3203, so as to achieve the purpose of precise focusing. At the same time, the change amount of the light spot can be controlled by setting the spacing between the slots of the spring slot array 3203. One slot in the spring slot array 3203 corresponds to one focusing gear, and the number of gears can be set according to demand. By controlling the dimensional accuracy of the rotating adjustment mechanism, the distance parameter between the lens 322 and the light source 30 is adjusted, so as to achieve the control of the light irradiation angle of the lamp and control the size of the light spot change. This focusing method is superior to other rotating adjustment methods in terms of accuracy and ease of use; during operation, the positioning spring 3214 instantly switches to the required irradiation angle gear, thereby improving the operating efficiency and safety of the operator during high-altitude operations, and better meeting the needs of the site.

[0054] See also Figure 7 As shown, after focusing, when the distance between the lens 322 and the light source 30 is closer, the divergence angle of the light emitted by the lamp is larger. Figure 8 As shown, after focusing, when the distance between the lens 322 and the light source 30 is far, the focus of the lens 322 moves relative to the light emitting center of the light source 30, and the divergence angle of the light emitted by the lamp is smaller, tending to be parallel light.

[0055] The above embodiments are only preferred embodiments of the present invention, and are only intended to further describe the technical solutions of the present invention in detail, but do not limit the protection scope and implementation methods of the present invention. Any changes, deletions, combinations, replacements or modifications made without departing from the spirit and principles of the present invention shall be included in the protection scope of the present invention.

Claims

1. A focus-adjustable lamp with adjustable brightness and color temperature, characterized in that: It comprises an electrical box (1), a lamp arm (2) and a lamp head (3); one end of the lamp arm (2) is fixedly mounted on the bottom of the electrical box (1), and the lamp head (3) is rotatably mounted on the other end of the lamp arm (2); The electrical appliance box (1) is provided with a dimming and color-adjusting electrical appliance (4); the dimming and color-adjusting electrical appliance (4) is connected to the lamp holder (3) via a circuit; the dimming and color-adjusting electrical appliance (4) is provided with a dimming switch (41) and a color-adjusting switch (42) which are independently provided. The lamp head (3) comprises a light source (30), a lamp tube (31) and a focusing assembly (32); The light source (30) is arranged in the lamp tube (31) and is connected to the dimming and color-adjusting appliance (4) via a circuit; The focusing assembly (32) is arranged at the light-emitting end of the lamp tube (31); The focusing assembly (32) comprises a focusing outer ring (320), a focusing inner ring (321), a lens (322), and an adjustment ring (323); the focusing inner ring (321) is rotatably mounted inside the focusing outer ring (320) relative to the focusing outer ring (320); the adjustment ring (323) is fixedly mounted at the light-emitting end of the focusing inner ring (321); the lens (322) is fixedly mounted between the focusing inner ring (321) and the adjustment ring (323) ); the focus outer ring (320) is installed in the lamp tube (31), wherein the inner surface of the lamp tube (31) is provided with a lamp tube clamping groove (310), and the outer ring surface of the focus outer ring (320) has an outer ring clamping point (3201) that matches the lamp tube clamping groove (310), and through the cooperation between the outer ring clamping point (3201) and the lamp tube clamping groove (310), the focus outer ring (320) is clamped and installed in the lamp tube (31); The outer ring surface in the middle of the focusing inner ring (321) is provided with a positioning screw hole (3212), and a positioning screw (3213) is mounted on the positioning screw hole (3212); the focusing outer ring (320) is provided with a positioning bevel groove (3202) for limiting the range of motion of the positioning screw (3213); the axial angle between the positioning bevel groove (3202) and the focusing outer ring (320) is 45° to 60°; The inner surface of the focusing outer ring (320) is provided with a spring clip slot array (3203) near the light source (30); a positioning spring (3214) is installed on the end surface of the focusing inner ring (321) near the light source, and the portion of the positioning spring (3214) away from the installation position is folded; the folded portion of the positioning spring (3214) is tightly attached to the slot body in the spring clip slot array (3203); the folded portion of the positioning spring (3214) jumps from one slot body to another slot body in the spring clip slot array (3203), corresponding to the change of a focusing gear, and the amount of change of the light spot of the emitted light can be controlled by setting the spacing between the slot bodies of the spring clip slot array.

2. A focus-adjustable lamp with adjustable brightness and color temperature according to claim 1, characterized in that: The outer ring surface of the focusing inner ring (321) close to the light emitting end is provided with an inner ring clamping point (3211); the adjusting ring (323) is provided with an adjusting ring clamping groove (3231) which cooperates with the inner ring clamping point (3211); through the cooperation between the inner ring clamping point (3211) and the adjusting ring clamping groove (3231), the adjusting ring (323) is fixedly mounted on the light emitting end of the focusing inner ring (321) by means of a clamping sleeve.

3. A focus-adjustable lamp with adjustable brightness and color temperature according to any one of claims 1 to 2, characterized in that: A light source base (33) is arranged in the lamp tube (31); the light source (30) is mounted on the light source base (33); a heat sink (34) is arranged in the lamp tube (31) at a side of the light source base (33) away from the light emitting end of the lamp tube (31), and a heat dissipation groove (35) is provided on the lamp tube (31) at a position corresponding to the arrangement of the heat sink (34); a rear cover (36) is installed at the end of the lamp tube (31) opposite to the light emitting end of the lamp tube (31); and the rear cover (36) is rotatably connected to the lamp arm (2) via a rotating bracket (5).

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