Shadowless lamp integrated in the ceiling

Abstract

The present application relates to the field of lighting technology. The shadowless lamp integrated in the ceiling comprises a shadowless lamp base body, the shadowless lamp base body is installed on the ceiling, the shadowless lamp base body comprises a frame, LED lamps arranged in an up-down mode and a lens are installed on the frame, the top of the lens is provided with a light guide groove with an opening facing upward, the inner wall of the light guide groove comprises a transmission area, a refraction area, a first transition connection area, a first reflection area and a second transition connection area arranged in sequence from inside to outside, the second transition connection area of the light guide groove is connected with the outer wall of the lens, the outer wall of the lens is provided with a second reflection area, a hollow cavity is arranged in the center of the lens, the lower side of the hollow cavity is a plane, and the upper side of the hollow cavity comprises a central plane and an outer convex curved surface arranged in an inner-outer mode. The structure of the lens base body is optimized, the light reflected by the light source located in the center of the top of the lens base body is collected and processed, a cylindrical light is formed, and the light collecting effect is improved.

Description

TECHNICAL FIELD

[0001] The present application relates to the field of lighting technology, in particular to shadowless lamp. BACKGROUND

[0002] The light spot irradiated by the lens of the existing LED shadowless lamp is reflected in a conical manner and scattered after reaching a certain height, and the light collection is insufficient, especially the scattered and diffused light cannot be collected, resulting in halo.

[0003] After the existing lens is designed as a shadowless lamp, the lamp head can only stay at a position about 1 meter away from the irradiation surface, and beyond 1 meter, due to the scattering of light, it is not conducive to ensuring the effect of light collection.

[0004] The lens design of the existing shadowless lamp concentrates all the collected light to a point at 1 meter, resulting in more concentrated irradiance Ee in the collected light, and the ratio of irradiance Ee to illuminance Ec is not more than 6 mW / (㎡·lx) according to the regulations. The existing lens irradiance Ee value is between 400 W / ㎡-600 W / ㎡, and the high ratio of irradiance Ee to illuminance Ec will cause water loss of the irradiated wound and excessive heat of the doctor's head, resulting in sweating, etc. SUMMARY

[0005] In view of the problems existing in the prior art, the present application provides a shadowless lamp integrated in the ceiling, which has solved at least one of the above technical problems.

[0006] The technical scheme of the present application is: a shadowless lamp integrated in the ceiling, comprising a shadowless lamp base body, characterized in that the shadowless lamp base body is installed on the ceiling;

[0007] The shadowless lamp base body comprises a frame, and an LED lamp and a lens are installed on the frame in an up-down arrangement;

[0008] The top of the lens is provided with a light guide groove with an opening facing upward, and the inner wall of the light guide groove comprises, from inside to outside, a transmission zone, a refraction zone, a first transition connection zone, a first reflection zone, and a second transition connection zone; the second transition connection zone of the light guide groove is connected with the outer wall of the lens; and the outer wall of the lens is provided with a second reflection zone;

[0009] The transmission zone is a plane perpendicular to the axial direction of the lens base body; the refraction zone is a curved surface arranged downwardly and outwardly; the first transition connection zone is a curved surface arranged upwardly and outwardly; the first reflection zone is a curved surface arranged downwardly and outwardly; the second transition connection zone is a curved surface arranged upwardly and outwardly; and the second reflection zone is a curved surface arranged downwardly and outwardly from inside to outside;

[0010] The lens is provided with a hollow cavity in the center, the lower side of the hollow cavity is a plane, the upper side of the hollow cavity comprises a central plane and an outer convex curved surface arranged inside and outside, and the outer edge of the upper side of the hollow cavity is connected with the outer edge of the lower side through a cylindrical surface;

[0011] The axial projection area of the hollow cavity is located in the inner side area of the second transition connection area;

[0012] The outer edge of the axial projection area of the transmission area is located inside the axial projection area of the hollow cavity.

[0013] The lens body is optimized, the light reflected by the light source located at the top center of the lens body is converged to form a cylindrical light, and the light collecting effect is improved.

[0014] Further preferably, the curvature of the first reflection area is 1.80m -1 to 1.90m -1 ;

[0015] The curvature of the second reflection area is 0.5m -1 to 0.6m -1 ;

[0016] The refraction area is inclined outward by 60° to 65° from bottom to top.

[0017] Further preferably, the refraction area is located between the upper end and the lower end of the first reflection area, and the first reflection area is located between the upper end and the lower end of the second reflection area.

[0018] Further preferably, the angle direction of the LED lamp vertically downward is 0°, and the angle direction of the LED lamp horizontally outward is 90°.

[0019] The angle direction of the LED lamp vertically downward is 0°, and the angle direction of the LED lamp horizontally outward is 90°.

[0020] The light emitting direction of the LED lamp of 0°-14° passes through the transmission area;

[0021] The light emitting direction of the LED lamp of 14°-33° passes through the transmission area and the outer convex curved surface;

[0022] The light emitting direction of the LED lamp of 33°-41° passes through the refraction area;

[0023] The light emitting direction of the LED lamp of 46°-57° passes through the first reflection area;

[0024] The light emitting direction of the LED lamp of 57°-90° passes through the second reflection area.

[0025] Further preferably, the first reflection area and the second reflection area are both convex surfaces.

[0026] Further preferably, the first transition connection area and the second transition connection area are conical surfaces.

[0027] Further preferably, the material of the lens is transparent silicone. The illuminance can be improved by more than 5%.

[0028] Further preferably, the material of the lens is PMMA-8H. The light intensity passing through the lens material can also be reduced, which is a key to ensuring illuminance later.

[0029] Further preferably, the LED lamp is installed at the top center of the light guide groove.

[0030] The included angle between the opposite ends of the outer side of the transmission area and the LED lamp is 66°.

[0031] The included angle between the opposite ends of the outer side of the central plane and the LED lamp is 28°.

[0032] The included angle between the opposite ends of the outer side and the inner side of the refraction area and the LED lamp is 8°.

[0033] The included angle between the opposite ends of the outer side and the inner side of the first transition connection area and the LED lamp is 17°.

[0034] The included angle between the opposite ends of the outer side and the inner side of the first reflection area and the LED lamp is 11°.

[0035] It is convenient to realize the light convergence of different angle areas reflected by the lamp beads.

[0036] Further preferably, there is a gap between the line from the outer side of the refraction area to the LED lamp and the line from the inner side of the first reflection area to the LED lamp, and the included angle of the gap is less than 7°.

[0037] Further preferably, the outer diameter of the lower end of the second reflection area is 50 mm, and the outer diameter of the upper end of the second reflection area is 26 mm.

[0038] Further preferably, the outer side of the second reflection area is covered with a reflective mirror layer.

[0039] The outer side of the first reflection area is covered with a reflective mirror layer.

[0040] Alternatively, the roughness of the transmission area is 0.012 μm to 0.025 μm.

[0041] The roughness of the refraction area is ≧0.012 μm.

[0042] The roughness of the first transition connection area is >= 0.025um;

[0043] The roughness of the first reflection area is >= 0.012um;

[0044] The roughness of the second transition connection area is >= 0.025um.

[0045] By adjusting the roughness of different areas, the reflection effect and the transmission effect are realized.

[0046] Further preferably, the interval between adjacent lenses is in the interval of 50mm to 60mm, and the lenses are arranged in a ring shape.

[0047] Beneficial effect: the whole machine light spot is uniform, and the shadow-free effect is best.

[0048] The present application can reduce the scattering of light and produce a cylindrical light. The distance of the surgical shadowless lamp from the irradiation surface can be increased to more than 3 meters. The light spot is more uniform, and the light distribution is uniform. According to the standard YY0627-2008 Medical Electrical Equipment Part 2: Surgical Shadowless Lamps and Diagnostic Illumination Lamps Safety Special Requirements, the ratio of D10 / D50 in this standard can reach more than 80. The effective irradiation area of the light spot is larger, and the heat radiation can be reduced by more than 10%.

[0049] The light spot of the LED lamp reflected to 1 meter is 100mm, the light spot at 1.5 meters is 150mm, the light spot at 2 meters is 200mm, the light spot at 2.5 meters is 280mm, the light spot at 3 meters is 360mm, and the illumination loss curve is much smaller than that of the single convex lens with single curvature design. BRIEF DESCRIPTION OF DRAWINGS

[0050] Figure 1 It is a sectional view of embodiment 1 of the present application;

[0051] Figure 2 It is a light path schematic diagram of embodiment 1 of the present application;

[0052] Figure 3 It is a partial light path schematic diagram of embodiment 1 of the present application;

[0053] Figure 4 It is a partial structure schematic diagram of embodiment 2 of the present application.

[0054] In the figure: 1 is a lens, 3 is an LED lamp, 4 is a connecting rod, 5 is a supporting rod, 6 is a stand, 11 is a transmission area, 12 is a refraction area, 13 is a first reflection area, 14 is a second reflection area, 21 is a central plane, and 22 is an outer convex curved surface. DETAILED DESCRIPTION

[0055] The application will be further described below with reference to the drawings.

[0056] Referring to Figures 1 to 3 , the shadowless lamp integrated in the ceiling includes a shadowless lamp base body, and the shadowless lamp base body is installed on the ceiling. The shadowless lamp base body includes a frame, and the frame is installed with LED lamps 3 arranged in an up-down manner and a lens 1. The lens is provided with a light guide groove with an opening facing upward at the top, and the inner wall of the light guide groove includes a transmission area 11, a refraction area 12, a first transition connection area, a first reflection area 13, and a second transition connection area arranged in sequence from inside to outside. The second transition connection area of the light guide groove is connected with the outer wall of the lens, and the outer wall of the lens is provided with a second reflection area 14. The transmission area 11 is a plane perpendicular to the axial direction of the lens base body. The refraction area 12 is a curved surface arranged downward and outward from inside to outside. The first transition connection area is a curved surface arranged upward from inside to outside. The first reflection area 13 is a curved surface arranged downward from inside to outside. The second transition connection area is a curved surface arranged upward from inside to outside. The second reflection area 14 is a curved surface arranged downward from inside to outside. The lens is provided with a hollow cavity in the center, the lower side of the hollow cavity is a plane, the upper side of the hollow cavity includes a central plane 21 and an outer convex curved surface 22 arranged in sequence from inside to outside, and the outer edge of the upper side of the hollow cavity is connected with the outer edge of the lower side through a cylindrical surface. The axial projection area of the hollow cavity is located in the inner side area of the second transition connection area. The outer edge of the axial projection area of the transmission area 11 is located in the inside of the axial projection area of the hollow cavity. The structure of the lens base body is optimized, the light reflected by the light source located at the top center of the lens base body is collected and processed, the light is formed into a cylindrical light, and the light collection effect is improved. The hollow cavity is a vacuum cavity.

[0057] The curvature of the first reflection area 13 is 1.80m -1 to 1.90m -1 ; the curvature of the second reflection area 14 is 0.5m^-1 to 0.6m -1 ; and the refraction area 12 is inclined outward by 60° to 65° from bottom to top. The refraction area 12 is located in the area between the upper end and the lower end of the first reflection area 13, and the first reflection area 13 is located in the area between the upper end and the lower end of the second reflection area 14.

[0058] The angle direction of the LED lamp vertically downward is 0°, and the angle direction of the LED lamp horizontally outward is 90°; the light emitting direction of the LED lamp of 0°-14° passes through the transmission area 11; the light emitting direction of the LED lamp of 14°-33° passes through the transmission area 11 and the outer convex surface; the light emitting direction of the LED lamp of 33°-41° passes through the refraction area 12. The light emitting direction of the LED lamp of 41°-57° passes through the first transition connecting area. The light emitting direction of the LED lamp of 46°-57° passes through the first reflection area 13; the light emitting direction of the LED lamp of 57°-90° passes through the second reflection area 14. The light emitting direction of the LED lamp of 57°-90° passes through the first transition connecting area.

[0059] The first reflection area 13 and the second reflection area 14 are both outer convex surfaces.

[0060] The first transition connecting area and the second transition connecting area are conical surfaces.

[0061] The material of the lens is transparent silicone. The illuminance can be improved by more than 5%. Alternatively, the material of the lens is PMMA-8H material. The light intensity passing through the lens material can also be reduced, which is the key to ensuring the illuminance later.

[0062] The top center of the light guide groove is provided with an LED lamp; the included angle between the opposite ends outside the transmission area 11 and the LED lamp is 66°; the included angle between the opposite ends outside the central plane 21 and the LED lamp is 28°; the included angle between the opposite ends inside and outside the refraction area 12 and the LED lamp is 8°; the included angle between the opposite ends inside and outside the first transition connecting area and the LED lamp is 17°; the included angle between the opposite ends inside and outside the first reflection area 13 and the LED lamp is 11°. It is convenient to realize the light convergence of the light beads in different angle areas.

[0063] There is a gap between the line from the outside of the refraction area to the LED lamp and the line from the inside of the first reflection area to the LED lamp, and the included angle of the gap is less than 7°. The outer diameter of the upper end of the second reflection area 14 is 26mm. The outer diameter of the lower end of the second reflection area 14 is 50mm.

[0064] The first reflection area is covered with a mirror surface layer. The outside of the second reflection area 14 is covered with a mirror surface layer; the outside of the first reflection area 13 is covered with a mirror surface layer.

[0065] Alternatively, the roughness of the transmission region 11 is 0.012 μm to 0.025 μm; the roughness of the refractive region 12 is ≧0.012 μm; the roughness of the first transition connection region is ≧0.025 μm; the roughness of the first reflection region 13 is ≧0.012 μm; the roughness of the second transition connection region is ≧0.025 μm. By adjusting the roughness of different regions, the reflection effect and the transmission effect are realized. The interval between adjacent lenses is in the range of 50 mm to 60 mm.

[0066] Referring to Figure 4 , in specific embodiment 2, on the basis of specific embodiment 1, the frame comprises an umbrella-shaped framework, the umbrella-shaped framework comprises a support piece that can be opened or closed, the support piece comprises a disc and a support rod 5 arranged at the periphery of the disc, and the support rod 5 is rotationally connected with the disc. The umbrella-shaped framework comprises a stand 6, the bottom of the stand 6 is detachably connected with the disc. Further comprising a connecting rod mechanism, a sliding block that is slidingly connected with the stand and a connecting rod 4 arranged in the circumferential direction, one end of the connecting rod 4 is hingedly connected with the sliding block, and the other end of the connecting rod is hingedly connected with the support rod 5. The sliding block is connected with one end of an electric telescopic rod. The other end of the electric telescopic rod is connected with the stand. It is convenient to open and close the electric control umbrella-shaped framework. At least five light emitting pieces are arranged along the length direction on the support rod, the light emitting piece comprises a base, and an LED lamp arranged in an up-down direction and a lens are arranged on the base. It is convenient to open and close the support piece by sliding the sliding block up and down, that is, to adjust the inclination angle of the support rod, and then to adjust the light emitting direction.

[0067] In the present application, it should be explained that "up", "down", "left", "right" and the like are the orientation or positional relationship shown in the drawings, which are only for the convenience of describing the present application and simplifying the description, and do not indicate or imply that a specific orientation must be constructed and operated in a specific orientation, so it cannot be understood as a limitation on the present application.

[0068] The above is only the preferred embodiment of the present application, and it should be pointed out that for ordinary skilled in the art, without departing from the principle of the present application, a number of improvements and refinements can be made, which should also be regarded as the protection scope of the present application.

Claims

1. A shadowless lamp integrated in a ceiling, comprising a shadowless lamp base body, characterized in that, The shadowless lamp base is installed on a ceiling; The shadowless lamp base comprises a frame, and the frame is provided with LED lamps arranged in an up-down manner and a lens; The top of the lens is provided with a light guide groove with an opening facing upwards, and the inner wall of the light guide groove comprises, from inside to outside, a transmission area, a refraction area, a first transition connection area, a first reflection area, and a second transition connection area, the second transition connection area of the light guide groove is connected with the outer wall of the lens, and the outer wall of the lens is provided with a second reflection area; The transmission area is a plane perpendicular to the axial direction of the lens; the refraction area is a curved surface arranged downward and outward from inside to outside; the first transition connection area is a curved surface arranged upward from inside to outside; the first reflection area is a curved surface arranged downward from inside to outside; the second transition connection area is a curved surface arranged upward from inside to outside; and the second reflection area is a curved surface arranged downward from inside to outside; The lens is provided with a hollow cavity in the center, the lower side of the hollow cavity is a plane, the upper side of the hollow cavity comprises a central plane and an outer convex curved surface arranged inside and outside, and the outer edge of the upper side of the hollow cavity is connected with the outer edge of the lower side through a cylindrical surface; The axial projection area of the hollow cavity is located in the inner side area of the second transition connection area; The outer edge of the axial projection area of the transmission area is located inside the axial projection area of the hollow cavity.

2. The shadowless lamp integrated in the ceiling according to claim 1, characterized in that: The curvature of the first reflecting zone is 1.80 m -1 to 1.90 m -1 ; The curvature of the second reflection zone is 0.6 m -1 to 0.7 m -1 ; The refraction area is inclined outward by 60-65 degrees from bottom to top.

3. The recessed light fixture of claim 1, wherein: The refraction area is located in the area between the upper end and the lower end of the first reflection area, and the first reflection area is located in the area between the upper end and the lower end of the second reflection area.

4. The recessed light fixture of claim 1, wherein: The angle direction of the LED lamp vertically downward is 0 degrees, and the angle direction of the LED lamp horizontally outward is 90 degrees; The light emitting direction of the LED lamp of 0-14 degrees passes through the transmission area; The light emitting direction of the LED lamp of 14-33 degrees passes through the transmission area and the outer convex curved surface; The light emitting direction of the LED lamp of 33-41 degrees passes through the refraction area; The light emitting direction of the LED lamp of 46-57 degrees passes through the first reflection area; The light emitting direction of the LED lamp of 57-90 degrees passes through the second reflection area.

5. The recessed light fixture of claim 1, wherein: The material of the lens is PMMA-8H material or transparent silica gel.

6. The recessed light fixture of claim 1, wherein: The LED lamp is installed in the center of the top of the light guide groove; The included angle between the opposite ends of the outer side of the transmission area and the LED lamp is 66 degrees; The included angle between the opposite ends of the outer side of the central plane and the LED lamp is 28 degrees; The included angles between the outer side and the inner side of the refraction area and the LED lamp are 8 degrees respectively; The included angles between the outer side and the inner side of the first transition connection area and the LED lamp are 17 degrees respectively; The included angles between the outer side and the inner side of the first reflection area and the LED lamp are 11 degrees respectively.

7. The recessed light fixture of claim 1, wherein: There is a gap between the line connecting the outer side of the refraction area and the LED lamp and the line connecting the inner side of the first reflection area and the LED lamp, and the included angle of the gap is less than 7 degrees.

8. The recessed light fixture of claim 1, wherein: The outer diameter of the lower end of the second reflection area is 50 mm, and the outer diameter of the upper end of the second reflection area is 26 mm.

9. The recessed light fixture of claim 1, wherein: The outer side of the second reflection area is covered with a reflective mirror layer. The outer side of the first reflection area is covered with a reflective mirror layer.

10. The recessed light fixture of claim 1, wherein: The roughness of the transmission area is 0.012 μm to 0.025 μm; The roughness of the refraction area is ≧0.012 μm; The roughness of the first transition connection area is ≧0.025 μm; The roughness of the first reflection area is ≧0.012 μm; The roughness of the second transition connection area is ≧0.025 μm.

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