Rotary zoom lamp holder

Abstract

The rotary zoom lamp holder comprises a shell frame, a light source support and a convex lens, a barrel part is formed on the shell frame, a spiral groove section is formed on the barrel part, a lifting plate used for installing a light source is formed on the light source support, the lifting plate is arranged in the shell frame, the light source support is connected with the spiral groove section in a sliding mode, and the convex lens is arranged below the lifting plate correspondingly. According to the invention, the appearance structure of the lamp holder can be prevented from being changed due to focusing operation, so that the application adaptability of the lamp holder can be improved.

Description

Technical Field

[0001] This invention relates to the field of lighting lamp heads, and more specifically to a rotating zoom lamp head. Background Technology

[0002] Currently, some lamps are equipped with convex lenses, which converge the light emitted by the light source. The actual illumination range can be adjusted by changing the distance between the convex lens and the light source. For example, in the Chinese utility model patent announcement number CN214890638U, "A Sunset Lamp", the focusing lens barrel and the light source fixing base are connected together by internal and external threads. A hemispherical convex lens is set inside the lens barrel. Rotating the focusing lens barrel can change the distance between the convex lens and the light source, but the position of the convex lens also changes. In some applications, the lamp head needs to be fixedly installed, meaning the lamp head housing is fixed. As part of the external structure, the position of the convex lens can affect the appearance and function. For example, if the lamp head is installed in a recess, a change in the position of the convex lens may cause it to protrude out of the recess, making it visible from the side. Alternatively, if a glass cover is installed in the recess, the convex lens may interfere with the glass cover. Or, the convex lens may be bumped by objects passing in front of the recess. Therefore, changes in the relative position of the convex lens and the lamp head housing can cause the lamp head to interact with the outside world, resulting in poor application adaptability. Thus, it is necessary to manufacture a zoom lamp head that allows the light source to be adjusted. Summary of the Invention

[0003] The purpose of this invention is to overcome the shortcomings of the prior art and provide a rotating zoom lamp head, which is beneficial to improving the application adaptability of the lamp head.

[0004] The objective of this invention is achieved through the following technical solution.

[0005] The present invention discloses a rotating zoom lamp head, comprising a housing, a light source bracket, and a convex lens. The housing has a cylindrical portion with a spiral groove section. The light source bracket has a lifting plate for mounting the light source, the lifting plate being disposed within the housing. The light source bracket is slidably connected to the spiral groove section, and the convex lens is disposed below the corresponding part of the lifting plate.

[0006] Preferably, the rotary zoom lamp head of the present invention further includes a focusing ring, which is rotatably connected to the outer side of the cylindrical part. A limiting rotation groove is formed on the inner wall of the focusing ring, and the limiting rotation groove extends in the vertical direction. The light source bracket is formed with a sliding shaft, and the two ends of the lifting plate are respectively fixedly connected to the corresponding sliding shaft. The sliding shaft is adapted to be disposed in the corresponding spiral groove section, and the end of the sliding shaft is provided with a sliding piece, which is adapted to be slidably disposed in the corresponding limiting rotation groove.

[0007] Preferably, the end of the sliding shaft is formed with a shaft head, and the sliding piece is fitted onto the corresponding shaft head.

[0008] Preferably, the shaft head is a rectangular shaft head, and the slider is a rectangular slider.

[0009] Preferably, the lower end of the rotation limiting groove extends downward through the focusing ring.

[0010] Preferably, the upper end of the rotation limiting groove is a closed end.

[0011] Preferably, the rotating zoom lamp head of the present invention further includes a lens positioning ring, the cylindrical portion having a lower flange, the upper inner side of the lens positioning ring having an inner buckle that engages with the lower flange, the lower portion of the lens positioning ring having an inner ring edge portion, and the outer end of the convex lens abutting against the inner ring edge portion.

[0012] Preferably, the lower end of the cylindrical portion is formed with an inverted step, and the upper end of the convex lens is formed with a lens flange, the lens flange being adapted to connect with the inverted step.

[0013] Preferably, a circumferential positioning recess is formed on the lower flange, and the inner protrusion is fastened in the corresponding circumferential positioning recess.

[0014] Preferably, the shell frame has a top cover portion, the outer end of the top cover portion is integrally connected to the upper end of the cylindrical portion, a top cover through hole is formed on the top cover portion, a lifting plate through hole is formed on the lifting plate, the position of the lifting plate through hole corresponds to the top cover through hole, a hook plate is integrally connected to the upper part of the lifting plate, the hook plate is located above the lifting plate through hole, and a through gap is formed between the end of the hook plate and the upper part of the lifting plate.

[0015] Compared with the prior art, the beneficial effects of this invention are as follows: by setting a shell frame to form a cylindrical part, a spiral groove segment formed on the cylindrical part, and a light source bracket to form a lifting plate for mounting the light source, the lifting plate is located inside the shell frame, the light source bracket is slidably connected to the spiral groove segment, and the convex lens is located below the corresponding lifting plate, it is possible to avoid changes in the shape and structure of the lamp head due to focusing operations, thus improving the application adaptability of the lamp head. Attached Figure Description

[0016] Figure 1 This is a bottom-view three-dimensional structural diagram of the rotating zoom lamp head of the present invention.

[0017] Figure 2 This is a cross-sectional view of the rotating zoom lamp head of the present invention from the front view.

[0018] Figure 3 This is a cross-sectional view of the rotating zoom lamp head of the present invention from a bottom view.

[0019] Figure 4 This is an exploded view of the rotating zoom lamp head of the present invention from a low angle.

[0020] Figure 5 This is an exploded top view of the rotating zoom lamp head of the present invention.

[0021] Figure 6 This is a top-view perspective schematic diagram of the rotating zoom lamp head of the present invention with the focusing ring removed.

[0022] Figure 7 This is a three-dimensional structural diagram of the light source bracket of the present invention.

[0023] Figure 8 This is a cross-sectional structural diagram of the rotating zoom lamp head and light source combination of the present invention.

[0024] Labeling Explanation: Frame 1; Cylindrical Section 11; Spiral Groove Section 111; Lower Flange 112; Circumferential Positioning Recess 1121; Inverted Step 113; Top Cover Section 12; Top Cover Wiring Hole 121; Top Cover Mounting Hole 122; Light Source Bracket 2; Lifting Plate 21; Upper Recess 211; Light Source Plate Mounting Hole 2111; Lifting Plate Wiring Hole 212; Heat Dissipation Hole 213; Sliding Shaft 22; Shaft Head 2201; Sliding Plate 221; Hook Plate 23; Wiring Gap 231; Focusing Ring 3; Rotation Limiting Groove 301; Upper Groove Wall 3011; Anti-slip Groove 302; Convex Lens 4; Lens Flange 401; Lens Positioning Ring 5; Decorative Groove 501; Inner Ring Edge Section 51; Inner Protruding Buckle 52; Light Source Plate 990; Wire 9901; Light Source 99. Detailed Implementation

[0025] The present invention will now be further described with reference to the accompanying drawings.

[0026] The rotating zoom lamp head of the present invention, such as Figures 1 to 5 As shown, it includes a housing 1, a light source bracket 2, and a convex lens 4. The housing 1 is used to fix it to a structure such as a wall, cabinet, or ceiling, or the lamp head of the present invention can be used as a component of a lamp.

[0027] like Figures 1 to 5 As shown, the shell frame 1 has a cylindrical portion 11, which is cylindrical in shape. A helical groove segment 111 is formed on the cylindrical portion 11, meaning that the helical groove segment 111 extends along a cylindrical helix. The axis of the cylindrical helix coincides with the central axis of the cylindrical portion 11. The axis of the cylindrical helix is ​​along the vertical direction, such as... Figure 4 and Figure 8 As shown, the light source bracket 2 has a lifting plate 21 for mounting the light source 99, as... Figure 2As shown, the lifting plate 21 is located inside the housing 1, the light source bracket 2 is slidably connected to the spiral groove section 111, and the convex lens 4 is located below the lifting plate 21.

[0028] As the light source support 2 slides along the spiral groove section 111, it rotates around the central axis of the cylindrical part 11. Simultaneously, the light source support 2 moves up and down, thus changing the relative position of the light source support 2 and the shell 1 in the vertical direction. Figure 8 As shown, the light source 99 can be an LED light source. The light source 99 is located below the light source plate 990, which is mounted below the lifting plate 21. The light source 99 can be approximately located on the principal optical axis of the convex lens 4. Thus, the light source 99 emits light downwards, which is refracted by the convex lens 4 and then emitted downwards. The convex lens 4 converges the light, allowing the light source 99 to be adjusted vertically, thereby changing the relative position of the light source 99 and the focal point of the convex lens 4. This adjusts the illumination range of the light refracted by the convex lens 4. Since the lifting plate 21 is located inside the housing 1, and when the lifting plate 21 is adjusted vertically to adjust the light source 99, the convex lens 4 remains stationary (i.e., in its original position). In other words, the lamp head of this invention adjusts its internal structure to achieve the adjustment of the illumination range, thus avoiding changes in the lamp head's dimensions in the vertical direction due to focusing. In other words, focusing does not affect the lamp head installation and does not cause new interference between the convex lens 4 and external structures, which is beneficial for improving the application adaptability of the lamp head. In some applications, the light source board 990 can be an irregularly shaped light source board. For example, see the "Irregularly Shaped Light Source Board" in utility model patent announcement number CN223448256U. When the light source support 2 is adjusted up and down, the light source support 2 rotates at the same time, so the orientation of the irregularly shaped illumination range of the light refracted by the convex lens 4 can be adjusted.

[0029] Furthermore, such as Figures 1 to 5 As shown, the rotating zoom lamp head of the present invention also includes a focusing ring 3, which is rotatably connected to the outside of the cylindrical part 11, that is, the focusing ring 3 is coaxially arranged with the cylindrical part 11. A limiting rotation groove 301 is formed on the inner wall of the focusing ring 3, and the limiting rotation groove 301 extends in the vertical direction. The light source bracket 2 is formed with a sliding shaft 22, and the two ends of the lifting plate 21 are respectively fixedly connected to the corresponding sliding shaft 22. That is, the two sliding shafts 22 are distributed at 180° about the central axis of the cylindrical part 11, and the sliding shafts 22 and the lifting plate 21 are integrated. Figure 2 and Figure 6 As shown, the sliding shaft 22 is adapted to be disposed within the corresponding spiral groove section 111, such as... Figure 4As shown, two spiral groove segments 111 are formed on the cylindrical part 11. The two spiral groove segments 111 are distributed at 180° about the central axis of the cylindrical part 11. Thus, the two sliding shafts 22 are supported by the corresponding spiral groove segments 111, which is conducive to the force balance of the light source bracket 2 and thus conducive to the stable lifting and lowering movement of the light source bracket 2. The end of the sliding shaft 22 is provided with a sliding piece 221. The sliding piece 221 is adapted to slide in the corresponding rotation limiting groove 301. That is to say, the rotation limiting groove 301 prevents the sliding piece 221 from rotating relative to the sliding shaft 22. The sliding shaft 22 can be cylindrical, and the sliding piece 221 is located on the outside of the cylindrical part 11. When the focusing ring 3 is rotated by hand, the rotation limiting groove 301 pushes the slider 221 circumferentially. Since the sliding shaft 22 is adapted to be located in the corresponding spiral groove section 111, the sliding shaft 22 is guided by the spiral groove section 111 and gradually moves upward or downward, thus enabling the lifting plate 21 to move up and down. During this process, the slider 221 slides up and down relative to the corresponding rotation limiting groove 301, so the light source 99 installed on the lower side of the lifting plate 21 can also be adjusted relative to the convex lens 4. The rotation limiting groove 301 prevents the lifting plate 21 from rotating around the sliding shaft 22. By setting the focusing ring 3, the user can easily adjust the position of the light source bracket 2 by rotating the focusing ring 3. During this process, the height position of the focusing ring 3 remains unchanged, which can avoid significant changes in the relative position of the focusing ring 3 relative to the housing 1 due to the focusing operation.

[0030] Furthermore, such as Figure 7 As shown, a shaft head 2201 is formed at the end of the sliding shaft 22, as... Figure 2 and Figure 6 As shown, the slide plate 221 is fitted onto the corresponding shaft head 2201. That is, the slide plate 221 and the slide shaft 22 are separate structures. During assembly, the slide shaft 22 on one side of the tilted lifting plate 21 can be passed through the spiral groove section 111 first. Then, the lifting plate 21 is straightened so that the slide shaft 22 on the other side of the lifting plate 21 is inserted into the corresponding spiral groove section 111. Figure 6 As shown, a sliding plate 221 is then installed on the outside of the cylindrical section 11, followed by the focusing ring 3. The lifting plate 21 is moved along the radial direction of the cylindrical section 11 and is blocked by the bottom of the rotation limiting groove 301. The friction between the sliding shaft 22 and the spiral groove section 111, the friction between the sliding plate 221 and the rotation limiting groove 301, and the friction between the focusing ring 3 and the cylindrical section 11 allow the light source support 2 and the light source plate 990 mounted on the light source support 2 to remain stationary, that is, to prevent the light source support 2 from creeping down.

[0031] Furthermore, such as Figure 4 and Figure 7As shown, the shaft head 2201 is a rectangular shaft head, for example, the shaft head 2201 is a square shaft head, and the slider 221 is a rectangular slider. For example, the long side of the rectangle of the slider 221 is along the vertical direction. Thus, the structure simply realizes the circumferential relative positioning of the sliding shaft 22 and the slider 221 (about the axis of the sliding shaft 22). Since the slider 221 is a rectangular slider and the slider 221 is adapted to slide in the corresponding rotation limiting groove 301, the structure simply makes the groove wall of the rotation limiting groove 301 restrict the slider 221 from rotating around the sliding shaft 22. That is to say, the rotation limiting groove 301 guides the slider 221 relatively linearly.

[0032] Furthermore, such as Figure 4 and Figure 5 As shown, the lower end of the rotation limiting groove 301 passes through the focusing ring 3 downwards. Therefore, after the light source bracket 2 and the housing 1 are assembled, when the focusing ring 3 is placed on the outside of the cylinder 11 from top to bottom, the slider 221 can simultaneously slide into the rotation limiting groove 301 through the lower end of the rotation limiting groove 301, which facilitates the assembly of the lamp head of the present invention.

[0033] Furthermore, such as Figure 4 and Figure 5 As shown, the upper end of the rotation limiting groove 301 is a closed end, meaning that the rotation limiting groove 301 does not penetrate the focusing ring 3 upwards. Therefore, the upper end of the rotation limiting groove 301 forms an upper groove wall 3011, as shown. Figure 2 As shown, since the upper end of the rotation limiting groove 301 is a closed end, dust or debris is less likely to fall into the rotation limiting groove 301, thus preventing dust accumulation in the rotation limiting groove 301 and affecting the sliding of the slider 221. Figure 4 and Figure 5 As shown, each pair of 180° distributed rotation limiting slots 301 forms a group, and several groups of rotation limiting slots 301 are formed on the inner wall of the focusing ring 3. Therefore, when the focusing ring 3 is mounted downwards on the slider 221, the slider 221 only needs to be aligned with any group of rotation limiting slots 301, which makes it easier to install the focusing ring 3.

[0034] Furthermore, such as Figures 1 to 5 As shown, the lamp holder of the present invention also includes a lens positioning ring 5, the cylindrical portion 11 has a lower end flange 112, and the upper inner side of the lens positioning ring 5 has an inner protrusion buckle 52, as shown. Figure 6 As shown, the inner protrusion 52 engages with the lower flange 112, thus the lower flange 112 prevents the lens positioning ring 5 from shifting downwards. Furthermore, the lower flange 112 is fitted within the upper part of the lens positioning ring 5, thereby radially positioning the lens positioning ring 5 relative to the cylinder 11. Figure 5 As shown, the lower part of the lens positioning ring 5 has an inner ring edge portion 51, such as... Figure 2As shown, the outer end of the convex lens 4 rests against the inner edge 51, that is, the lower part of the convex lens 4 passes through the lens positioning ring 5, so the lens positioning ring 5 can radially position the convex lens 4, and the inner edge 51 supports the weight of the convex lens 4.

[0035] Furthermore, such as Figure 4 As shown, an inverted step 113 is formed at the lower end of the cylindrical portion 11, and a lens flange 401 is formed at the upper end of the convex lens 4, as... Figure 2 As shown, the lens flange 401 is adapted to connect to the inverted step 113, thus the inverted step 113 prevents the convex lens 4 from moving upward and radially. When assembling the convex lens 4 with the cylinder 11, the convex lens 4 is first moved upward so that the lens flange 401 is inserted into the inverted step 113, and then the lens positioning ring 5 is put upward onto the outside of the convex lens 4 so that the inner convex buckle 52 engages with the lower flange 112.

[0036] Furthermore, such as Figure 4 and Figure 5 As shown, a circumferential positioning recess 1121 is formed on the lower flange 112, such as... Figure 6 As shown, the inner protruding buckle 52 is provided in the corresponding circumferential positioning recess 1121. Thus, the circumferential positioning recess 1121 prevents the inner protruding buckle 52 from rotating around the central axis of the cylindrical part 11, thereby enhancing the relative positioning effect between the cylindrical part 11 and the lens positioning ring 5.

[0037] Furthermore, such as Figure 4 and Figure 5 As shown, the shell frame 1 has a top cover portion 12, the outer end of which is integrally connected to the upper end of the cylindrical portion 11. A top cover wiring hole 121 and a top cover mounting hole 122 are formed on the top cover portion 12, with the mounting hole 122 surrounding the outer side of the wiring hole 121. A lifting plate wiring hole 212 is formed on the lifting plate 21. Figure 2 and Figure 8 As shown, the position of the wire hole 212 on the lifting plate corresponds to the wire hole 121 on the top cover, as follows. Figure 5 and Figure 7 As shown, a hook plate 23 is integrally connected to the upper part of the lifting plate 21. The hook plate 23 is located above the wire hole 212 of the lifting plate, which can also be understood as the hook plate 23 spanning the wire hole 212 of the lifting plate. A wire-passing gap 231 is formed between the end of the hook plate 23 and the upper part of the lifting plate 21. With the above arrangement, as Figure 8 As shown, the wire 9901 connected to the light source board 990 can pass through the wire hole 212 of the lifting plate, then the wire 9901 goes around the hook plate 23, and then the wire 9901 passes through the wire hole 121 of the top cover and comes out upwards, as shown. Figure 4As shown, an upper recess 211 is formed on the lower side of the lifting plate 21, meaning that the upper recess 211 is concave upwards. Light source plate mounting holes 2111 are formed at the four corners of the upper recess 211. Through holes can be formed on the light source plate 990. By passing screws through these through holes and screwing them into the light source plate mounting holes 2111, the light source plate 990 can be securely mounted on the lifting plate 21. However, in some applications, it is not convenient to form the aforementioned through holes on the light source plate 990, such as... Figure 8 As shown, after the wire 9901 passes upward through the wire hole 212 of the lifting plate, the wire 9901 can be wrapped around the hook plate 23 more than twice through the aforementioned wire gap 231 by hand. Then, the wire 9901 is passed upward through the wire hole 121 of the top cover. This allows the wire 9901 to suspend the light source board 990, preventing the light source board 990 from shifting significantly downward relative to the lifting plate 21. Since the hook plate 23 is located above the wire hole 212 of the lifting plate, dust entering the housing 1 through the wire hole 121 of the top cover will be blocked by the hook plate 23, preventing dust from easily accumulating on the surface of the light source board 990 through the light source board mounting hole 2111.

[0038] like Figure 4 As described above, an anti-slip groove 302 is formed on the outer wall of the focusing ring 3. The anti-slip groove 302 extends in the vertical direction, so when the focusing ring 3 is pinched and rotated by hand, the finger contacts the groove end of the anti-slip groove 302, thus preventing the finger from slipping relative to the focusing ring 3. Figure 4 As shown, a decorative groove 501 is formed on the outer side of the lens positioning ring 5, such as... Figure 1 As shown, the anti-slip groove 302 can be aligned and connected with the decorative groove 501. Since the focusing ring 3 is cylindrical and the anti-slip groove 302 is a recessed structure, rotating the focusing ring 3 does not affect the shape and structure of the lamp head of the present invention.

[0039] Furthermore, such as Figure 7 As shown, heat dissipation holes 213 are formed on the lifting plate 21. The heat dissipation holes 213 can be distributed in a rectangular array. The heat dissipation holes 213 penetrate the lifting plate 21 vertically, thus connecting the heat dissipation holes 213 to the upper recess 211, as shown. Figure 8 As shown, the light source board 990 can dissipate heat through the heat dissipation hole 213, and then the heat inside the upper part of the housing 1 can be dissipated to the outside through the wire hole 121 on the top cover.

Claims

1. A rotating zoom lamp head, characterized in that: The device includes a housing (1), a light source bracket (2), and a convex lens (4). The housing (1) has a cylindrical portion (11) with a spiral groove section (111) formed on it. The light source bracket (2) has a lifting plate (21) for mounting a light source (99). The lifting plate (21) is located inside the housing (1). The light source bracket (2) is slidably connected to the spiral groove section (111). The convex lens (4) is located below the lifting plate (21).

2. The rotating zoom lamp head according to claim 1, characterized in that: It also includes a focusing ring (3), which is rotatably connected to the outside of the cylindrical part (11). A limited rotation groove (301) is formed on the inner wall of the focusing ring (3). The limited rotation groove (301) extends in the vertical direction. The light source bracket (2) is formed with a sliding shaft (22). The two ends of the lifting plate (21) are respectively fixedly connected to the corresponding sliding shaft (22). The sliding shaft (22) is adapted to be disposed in the corresponding spiral groove section (111). The end of the sliding shaft (22) is provided with a sliding piece (221). The sliding piece (221) is adapted to be slidably disposed in the corresponding limited rotation groove (301).

3. The rotating zoom lamp head according to claim 2, characterized in that: The end of the slide shaft (22) is formed with a shaft head (2201), and the slide plate (221) is fitted onto the corresponding shaft head (2201).

4. The rotating zoom lamp head according to claim 3, characterized in that: The shaft head (2201) is a rectangular shaft head, and the slide (221) is a rectangular slide.

5. The rotating zoom lamp head according to any one of claims 2 to 4, characterized in that: The lower end of the limiting rotation groove (301) extends downward through the focusing ring (3).

6. The rotating zoom lamp head according to claim 5, characterized in that: The upper end of the limited rotation slot (301) is set as a closed end.

7. The rotating zoom lamp head according to claim 1, characterized in that: It also includes a lens positioning ring (5), the cylindrical part (11) has a lower flange (112), the upper inner side of the lens positioning ring (5) has an inner buckle (52), the inner buckle (52) is fastened to the lower flange (112), the lower part of the lens positioning ring (5) has an inner ring edge (51), and the outer end of the convex lens (4) is attached to the inner ring edge (51).

8. The rotating zoom lamp head according to claim 7, characterized in that: The lower end of the cylindrical portion (11) is formed with an inverted step (113), and the upper end of the convex lens (4) is formed with a lens flange (401), which is adapted to connect with the inverted step (113).

9. The rotating zoom lamp head according to claim 7 or 8, characterized in that: A circumferential positioning recess (1121) is formed on the lower flange (112), and the inner protrusion (52) is disposed in the corresponding circumferential positioning recess (1121).

10. The rotating zoom lamp head according to any one of claims 1 to 4, characterized in that: The shell frame (1) has a top cover (12), the outer end of the top cover (12) is integrally connected to the upper end of the cylindrical part (11), the top cover (12) has a top cover wire hole (121), the lifting plate (21) has a lifting plate wire hole (212), the lifting plate wire hole (212) is located corresponding to the top cover wire hole (121), the upper part of the lifting plate (21) is integrally connected to a hook plate (23), the hook plate (23) is located on the upper side of the lifting plate wire hole (212), and a wire-passing gap (231) is formed between the end of the hook plate (23) and the upper part of the lifting plate (21).

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