COB light mixing support and lamp

Abstract

The COB light mixing support comprises a COB support body, a double-color-temperature COB, a diffusion plate, a diffusion plate fixing piece and a zoom lens, the COB support body comprises a mounting part and a hollow columnar part which is arranged in the center of the mounting part in an upward protruding mode, and the diffusion plate is fixed to the top end of the columnar part through the diffusion plate fixing piece; the zoom lens is centrally arranged on the columnar part in a sleeving mode and covers the diffusion plate fixing piece, the zoom lens can vertically move on the columnar part, and the double-color-temperature COB is arranged below the mounting part, is located at the bottom end of the columnar part and is opposite to the diffusion plate at the same time. The COB light mixing lamp comprises a COB light mixing support and a radiator, and the double-color-temperature COB is arranged below the installation part and fixed between the COB light mixing support and the radiator. According to the utility model, the light emitted by the double-color-temperature COB is better mixed after passing through the columnar part and the diffusion plate, the light spots finally emitted out of the zoom lens are more uniform and have no granular sensation, and the use experience is improved.

Description

TECHNICAL FIELD

[0001] The utility model relates to light source lighting technical field more specifically, relate to a COB mixed light support. BACKGROUND

[0002] COB (Chip On Board) is a kind of packaging method that multiple LED chips are directly packaged on metal-based printed circuit board.COB has the characteristics of waterproof, dustproof, moisture-proof, anti-static, anti-collision, excellent protection performance, high reliability and stability, and can be widely applied in many fields such as large supermarkets, photo studios, subway stations, stations, airports, schools, large commercial performance sites and conference sites.

[0003] In practical application, double-color-temperature or multi-color-temperature COB is used to realize the change of different color temperatures corresponding to different scenes.In order to make the light-emitting performance of double-color-temperature or multi-color-temperature COB more stable, an optical lens is often added in front of double-color-temperature or multi-color-temperature COB during the process of installing and fixing, so as to mix the light to achieve the purpose of uniform light emission.However, in the prior art, for double-color-temperature or multi-color-temperature COB, due to the large spacing between light-emitting particles, after passing through the optical lens, the light emission is not uniform, there are problems of poor mixed light effect and uneven light spot in the color adjusting process, and the particle feeling of light can be obviously seen, and the effect is poor. UTILITY MODEL CONTENTS

[0004] The utility model aims at providing a COB mixed light support and lamp with good mixed light effect and uniform light spot.

[0005] To achieve the above purpose, the solution of the utility model is as follows:

[0006] A COB mixed light support, comprising: a COB support, a double-color-temperature COB, a diffusion plate, a diffusion plate fixing member and a zoom lens, the COB support comprises a mounting portion and a hollow columnar portion protruding upward in the center of the mounting portion, the diffusion plate is fixed at the top end of the columnar portion by the diffusion plate fixing member, the zoom lens is centrally sleeved on the columnar portion and covers the top of the diffusion plate fixing member, and the zoom lens can vertically displace on the columnar portion, and the double-color-temperature COB is arranged below the mounting portion and simultaneously opposite to the bottom end of the columnar portion and the diffusion plate.

[0007] Further, the diffusion plate is below the incident surface of the zoom lens, and the distance between the bottom surface of the zoom lens and the top surface of the mounting portion of the COB support is 2.4mm-18.5mm when the zoom lens vertically displaces.

[0008] Further, the inner surface of the columnar portion of the COB support is smooth.

[0009] Furthermore, the diffuser plate fixing member is detachably fixedly connected to the COB bracket, the diffuser plate is fixed between the diffuser plate fixing member and the top of the columnar portion, and the diffuser plate fixing member is a cover body with a through middle and covers the diffuser plate and the top of the columnar portion.

[0010] Furthermore, the diffuser plate fixing piece is screwed on the top of the columnar portion. The columnar portion is a hollow cylinder with an outer peripheral wall of the top provided with an external thread. The diffuser plate fixing piece is an annular cover with an inner peripheral wall provided with an internal thread.

[0011] Furthermore, a diffusion plate placement groove for placing the diffusion plate is recessed on the inner wall of the top end of the columnar portion of the COB bracket.

[0012] Furthermore, the mounting portion of the COB bracket is arranged around the bottom end of the columnar portion, and a mounting wall is protruding downward around the mounting portion, and an avoidance gap is provided in the mounting wall for the lead wire to pass through.

[0013] The utility model also provides a COB light mixing lamp, comprising the above-mentioned COB light mixing bracket and a radiator, wherein the dual-color temperature COB is arranged below the mounting portion and is fixed between the COB light mixing bracket and the radiator.

[0014] A COB light mixing lamp comprises the above-mentioned COB light mixing bracket, a dual-color temperature COB, and a radiator. The dual-color temperature COB is arranged below the mounting portion of the COB light mixing bracket and is fixed between the COB light mixing bracket and the radiator.

[0015] Furthermore, corresponding screw holes are provided on the mounting portion and the heat sink, and the COB light mixing bracket and the heat sink are fixedly connected by screws.

[0016] Furthermore, thermal grease is coated on the bottom surface of the dual-color temperature COB contact heat sink.

[0017] After adopting the above scheme, the utility model uses the (smooth) inner surface of the columnar part of the COB bracket and the diffuser plate to mix the light, so that the light emitted by the dual-color temperature COB is subjected to multiple refractions through the inner surface of the columnar part to perform the first light mixing, and then passes through the diffuser plate to form the second light mixing, so that the light is better mixed. Finally, after the light passes through the zoom lens, the light spot is more uniform and has no graininess, thereby improving the user experience. BRIEF DESCRIPTION OF THE DRAWINGS

[0018] Figure 1 This is a three-dimensional diagram (1) of the present utility model.

[0019] Figure 2 This is a three-dimensional diagram (2) of the present utility model.

[0020] Figure 3 for Figure 1 Front view of .

[0021] Figure 4for Figure 2 Front view of .

[0022] Figure 5 This is a schematic diagram of the structure of the present invention without the zoom lens.

[0023] Figure 6 This is a cross-sectional view of the present invention without the zoom lens.

[0024] Figure 7 This is an exploded view of the present invention.

[0025] Explanation of the accompanying reference numerals: 100 COB mixed light lamp; 10 COB mixed light bracket; 1 COB bracket; 11 mounting portion; 111 mounting wall; 112 avoidance gap; 113 first screw hole; 12 columnar portion; 121 diffuser plate placement groove; 122 external thread; 2 diffuser plate; 3 diffuser plate fixing member; 31 internal thread; 4 dual color temperature COB; 5 radiator; 51 second screw hole; 6 screw; 7 zoom lens. DETAILED DESCRIPTION

[0026] In order to further explain the technical solution of the present invention, the present invention will be described in detail below through specific embodiments.

[0027] See Figures 1 to 7 The present invention provides a COB light mixing bracket 10, comprising: a COB bracket 1, a diffuser plate 2, a diffuser plate fixing member 3, and a zoom lens 7. The COB light mixing bracket 10 is assembled and used in combination with the zoom lens 7 and the dual-color temperature COB 4. The COB bracket 1 includes a mounting portion 11 and a hollow cylindrical portion 12 protruding upward from the center of the mounting portion 11. The diffuser plate 2 is fixed to the top of the cylindrical portion 12 of the COB bracket 1 via the diffuser plate fixing member 3. The zoom lens 7 is centrally mounted on the cylindrical portion 12 and simultaneously covers the top of the diffuser plate fixing member 3, allowing the zoom lens 7 to move vertically on the cylindrical portion 12. The dual-color temperature COB 4 is located below the mounting portion 11 and at the bottom end of the cylindrical portion 12, opposite the diffuser plate 2.

[0028] like Figure 6 As shown, the diffusion plate 2 is located below the incident surface of the zoom lens 7, combined with Figure 3 、 Figure 4 As shown, when the zoom lens 7 is vertically displaced, the distance between its bottom surface and the top surface of the COB bracket mounting portion 11 can be between 2.4mm and 18.5mm. Through the vertical displacement of the zoom lens 7 on the cylindrical portion 12, the beam angle of the light emitted by the dual-color temperature COB 4 reaching the zoom lens 7 can vary by 15°-50°. When the distance between the bottom surface of the zoom lens 7 and the top surface of the mounting portion 11 is 18.5mm, the beam angle is 50°. When the distance between the bottom surface of the zoom lens 7 and the top surface of the mounting portion 11 is 2.4mm, the beam angle is 15°.

[0029] Preferably, the inner surface of the columnar portion 12 of the COB bracket 1 in this embodiment is smooth, which can better form multiple refractions on the inner surface of the columnar portion 12 and further improve the effect of the final emitted light.

[0030] In this embodiment, the diffuser plate fixing member 3 is removably fixedly connected to the COB bracket 1. The diffuser plate 2 is fixed between the diffuser plate fixing member 3 and the top of the columnar portion 12. The diffuser plate fixing member 3 is a through-hole cover that covers the diffuser plate 2 and the top of the columnar portion 12. Specifically, the diffuser plate fixing member 3 of this embodiment can be screwed onto the top of the columnar portion 12, so that the columnar portion 12 is a hollow cylinder with external threads 122 on the outer peripheral wall of the top. The diffuser plate fixing member 3 is an annular cover with internal threads 31 on the inner peripheral wall. In other embodiments, the diffuser plate fixing member 3 can also be removably fixed to the COB bracket 1 by means of a snap fastener or other means.

[0031] In this embodiment, the top inner wall of the columnar portion 12 of the COB bracket 1 is recessed with a diffuser plate placement groove 121 for accommodating the diffuser plate 2. The shape of the diffuser plate 2 matches the cross-sectional shape of the columnar portion 12. A circle of steps protrudes evenly radially inward from the top inner wall of the columnar portion 12. During assembly, the diffuser plate 2 rests on this circle of steps.

[0032] When assembling the COB mixing light bracket 10, the diffuser plate 2 is placed in the diffuser plate placement groove 121 at the top of the columnar part 12 of the COB bracket 1, and then the diffuser plate fixing part 3 is covered downward and screwed to the columnar part 12, and the diffuser plate 2 is firmly clamped between the diffuser plate fixing part 3 and the diffuser plate placement groove 121 at the top of the columnar part 12. Finally, the zoom lens 7 is centered on the columnar part 12 and covered above the diffuser plate fixing part 3. The zoom lens 7 can be vertically displaced on the columnar part 12 to achieve zooming.

[0033] In this embodiment, the COB bracket 1 is made of aluminum and can be manufactured by lathing aluminum, with the inner surface being smoothed. This allows the light emitted by the dual-color temperature COB 4 to be refracted multiple times on the inner surface of the columnar portion 12 of the COB bracket 1, achieving a mixed light effect. In other embodiments, the COB bracket 1 is not limited to aluminum and can be made of other materials such as plastic, as long as it can achieve multiple refractions.

[0034] In this embodiment, the mounting portion 11 of the COB bracket 1 is arranged around the bottom end of the columnar portion 12. A mounting wall 111 protrudes downwardly from the circumference of the mounting portion 11. This wall 111 may be discontinuous and includes a clearance notch 112 for the wires to pass through. When the COB light mixing bracket 10 is assembled and the dual-color temperature COB 4 is installed, the wires connected to the dual-color temperature COB 4 can be directly led out through the clearance notch 112, eliminating the need to route the wires through the back of the COB 4. This improves installation convenience and enhances the overall compactness and aesthetics of the structure.

[0035] Combine Figures 1 to 4 The present invention also discloses a COB light-mixing lamp 100, comprising the COB light-mixing bracket 10 and the heat sink 5 of the aforementioned embodiment. A dual-color temperature COB 4 is disposed below the mounting portion 11 of the COB light-mixing bracket 10 and secured between the bracket 10 and the heat sink 5. The lamp may also be provided with a driving member and a drive member that can vertically displace the zoom lens 7 relative to the columnar portion 12. However, this structure is not the focus of this application and will not be described in detail here.

[0036] The COB light mixing bracket 10 and the heat sink 5 can be fixedly connected by corresponding screw holes provided on the mounting portion 11 and the heat sink 5 (for ease of distinction, the screw hole on the mounting portion 11 is designated as the first screw hole 113, and the screw hole on the heat sink 5 is designated as the second screw hole 51). The COB light mixing bracket 10 and the heat sink 5 are fixedly connected by screws 6. The dual-color temperature COB 4, serving as the light source, is accommodated within the mounting wall 111 of the mounting portion 11, securely sandwiched between the COB light mixing bracket 10 and the heat sink 5. The light emitted by the COB light mixing bracket 4 passes through the columnar portion 12 and the diffuser plate 2 and is emitted from the COB light mixing lamp 100.

[0037] When assembling the COB mixed light lamp 100, the dual-color temperature COB4 can be soldered with wires first and placed on the radiator 5. The COB mixed light bracket 10 assembled in the above embodiment can be covered on the dual-color temperature COB4, so that the first screw hole 113 on the mounting portion 11 is aligned with the second screw hole 51 on the radiator 5. Then, the lead of the dual-color temperature COB4 is led out from the avoidance notch 112 of the mounting portion 11, and the screw 6 is passed through the first screw hole 113 and the second screw hole 51 to fix the entire structure.

[0038] Preferably, the bottom surface of the dual-color temperature COB 4 contacting the heat sink 5 may be coated with thermal grease to achieve the purpose of heat conduction.

[0039] After adopting the above structure, the light emitted by the dual-color temperature COB4 can be mixed once by forming multiple refractions with the help of the (smooth) inner surface of the columnar part 12 of the COB bracket 1, and then mixed twice by passing through the diffuser 2, so that the COB mixing bracket 10 composed of the COB bracket 1, the diffuser 2 and the diffuser plate fixing part 3 has a better mixing effect. When the COB mixing lamp 100 is composed of the dual-color temperature COB4 and the radiator 5, the light emitted by the dual-color temperature COB4 can be better mixed after passing through the columnar part 12 and the diffuser 2. The light spot emitted after finally passing through the zoom lens 7 is more uniform and has no graininess, thereby improving the user experience.

[0040] The above is only an embodiment of the present invention and is not intended to limit the present invention. Any modifications, equivalent replacements and improvements made within the spirit and principles of the present invention should be included in the scope of protection of the present invention.

Claims

1. A COB mixed light bracket, characterized in that: include: COB bracket, dual-color temperature COB, diffuser, diffuser plate fixing and zoom lens. The COB bracket includes a mounting portion and a hollow cylindrical portion protruding upward in the center of the mounting portion. The diffuser plate is fixed to the top of the cylindrical portion through the diffuser plate fixing. The zoom lens is centered on the cylindrical portion and covers the diffuser plate fixing. The zoom lens can be vertically displaced on the cylindrical portion. The dual-color temperature COB is arranged below the mounting portion and is at the bottom end of the cylindrical portion opposite to the diffuser plate.

2. The COB light mixing bracket according to claim 1, characterized in that: The diffusion plate is located below the incident surface of the zoom lens. When the zoom lens is vertically displaced, the distance between the bottom surface of the diffusion plate and the top surface of the COB bracket mounting portion is 2.4mm-18.5mm.

3. The COB light mixing bracket according to claim 1, characterized in that: The inner surface of the columnar portion of the COB bracket is smooth.

4. The COB light mixing bracket according to claim 1, characterized in that: The diffuser plate fixing part is detachably fixedly connected to the COB bracket. The diffuser plate is fixed between the diffuser plate fixing part and the top of the columnar portion. The diffuser plate fixing part is a cover body with a through middle and covers the diffuser plate and the top of the columnar portion.

5. The COB light mixing bracket according to claim 4, characterized in that: The diffuser plate fixing piece is screwed on the top of the columnar part. The columnar part is a hollow cylinder with an outer peripheral wall of the top provided with an external thread. The diffuser plate fixing piece is an annular cover with an inner peripheral wall provided with an internal thread.

6. The COB light mixing bracket according to claim 4, characterized in that: A diffusion plate placement groove for placing the diffusion plate is recessed on the inner wall of the top end of the columnar portion of the COB bracket.

7. The COB light mixing bracket according to claim 1, characterized in that: The mounting portion of the COB bracket is arranged around the bottom end of the columnar portion, and a mounting wall is protruding downward around the mounting portion, and an avoidance gap is provided in the mounting wall for the lead wire to pass through.

8. A COB mixed light lamp, characterized in that: The device comprises the COB light mixing bracket and the radiator according to any one of claims 1 to 7, wherein the dual-color temperature COB is arranged below the mounting portion and is fixed between the COB light mixing bracket and the radiator.

9. The COB mixed light lamp according to claim 8, characterized in that: Corresponding screw holes are provided on the mounting portion and the radiator, and the COB mixing light bracket and the radiator are fixedly connected by screws.

10. The COB mixed light lamp according to claim 9, characterized in that: The bottom surface of the dual-color temperature COB contact radiator is coated with thermal grease.

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