Lamp

Abstract

A lamp comprises a lamp tube unit, a support unit and a light-emitting unit. The lamp tube unit comprises a lamp tube part extending in the length direction. The support unit comprises at least one installation track which is arranged on the inner wall face of the lamp tube part and defines an installation space. The light-emitting unit comprises at least one light bar arranged in the installation space. The number of the light bars is smaller than or equal to that of the mounting rails. The light bar is provided with a circuit board, a plurality of light-emitting pieces installed on the circuit board and a plurality of packaging pieces covering the light-emitting pieces respectively. Each packaging piece abuts against the inner wall face of the lamp tube part. Therefore, the material consumed by the mounting rail is greatly reduced, the intensity of light penetrating through the lamp tube part can be increased, and the generation of glare is reduced.

Description

Technical Field

[0001] This utility model relates to a lighting device, and more particularly to a solid-state lighting device. Background Technology

[0002] An existing lighting fixture includes a light-transmitting tube, a carrier plate disposed within the tube, and two LED light strips mounted on the carrier plate. The tube extends along a length direction and has a central axis. The carrier plate extends along the length direction, with its two sides connecting to the inner wall surface of the tube and overlapping the central axis of the tube. The LED light strips are respectively mounted on both sides of the carrier plate and are adjacent to the central axis of the tube.

[0003] However, since the carrier plate passes through the central axis of the lamp tube, its width is roughly equal to the diameter of the lamp tube, and it extends along the length of the lamp tube, significantly increasing the overall weight of the lamp tube and raising the material cost of the carrier plate. Furthermore, the carrier plate is made of metal, which easily creates dark areas at the junction of the carrier plate and the inner wall of the lamp tube. Additionally, the LED strip is positioned close to the central axis of the lamp tube, increasing the optical path of light reaching the inner wall of the lamp tube and thus reducing the light intensity transmitted through the lamp tube. Utility Model Content

[0004] The purpose of this invention is to provide a lamp tube that can overcome at least one of the disadvantages of the prior art.

[0005] The lamp of this utility model includes a lamp tube unit, a bracket unit, and a light-emitting unit.

[0006] The lamp unit includes a lamp section extending along its length, the lamp section defining a central axis. The support unit includes at least one mounting track disposed on the inner wall surface of the lamp section. The mounting track defines a mounting space extending along the length direction. The support unit does not overlap with the central axis of the lamp section.

[0007] The light-emitting unit includes a light strip with its light-emitting surface facing away from the central axis and towards the inner wall surface of the lamp tube portion. The number of light strips is less than or equal to the number of mounting rails. The light strip is disposed in the mounting space. The light strip has a circuit board, a plurality of light-emitting elements mounted on the circuit board, and a plurality of encapsulations respectively covering the light-emitting elements. Each of the encapsulations abuts against the inner wall surface of the lamp tube portion.

[0008] The lamp of this utility model has a mounting track of the bracket unit having two rails that extend along the length direction and are spaced apart, the rails being parallel to each other and facing each other.

[0009] The lamp of this utility model has a protrusion extending from the inner wall surface of the lamp tube towards the central axis, and an extension connecting the protrusion. The extension extends in opposite directions, and the lamp bar abuts against the extension in the radial direction and is laterally limited by the protrusion.

[0010] The lamp of this utility model has each of the rails of the mounting track having a flat plate portion that extends in opposite directions.

[0011] In the lamp fixture of this utility model, each of the rails further has a stepped portion protruding from the flat plate portion to the inner wall surface of the lamp tube portion, and the lamp strip abuts against the flat plate portion radially and is laterally limited by the stepped portion.

[0012] The lamp of this utility model has a circular cross-section of the lamp tube section.

[0013] The lamp of this utility model has a rectangular cross-section of the lamp tube section.

[0014] The lamp of this utility model also includes a clamping unit, which includes a mounting frame and two clips connected to the mounting frame, the clips clamping the periphery of the lamp tube.

[0015] The lamp of this utility model has a bracket unit made of transparent material.

[0016] The lamp of this utility model has a cross-section of the lamp tube that is generally elliptical.

[0017] The advantages of this invention are as follows: Since the mounting track does not penetrate the central axis, compared to the existing configuration where the carrier plate penetrates the central axis, the material consumption is significantly reduced, thus lowering the overall manufacturing cost. Furthermore, because the light strips are positioned far from the central axis, and their light-emitting surfaces all face the inner wall of the lamp tube, the optical path of light reaching the inner wall of the lamp tube is greatly reduced, thereby increasing the light intensity transmitted through the lamp tube and reducing glare. Attached Figure Description

[0018] Other features and beneficial effects of this utility model will be clearly presented in the embodiments with reference to the accompanying drawings, wherein:

[0019] Figure 1 This is a perspective view illustrating the first embodiment of the lamp tube of this utility model;

[0020] Figure 2 This is an exploded perspective view, illustrating that one end cap portion is omitted in the first embodiment;

[0021] Figure 3 This is a cross-sectional view illustrating the first embodiment;

[0022] Figure 4 It is a cross-sectional view illustrating a variation of the first embodiment;

[0023] Figure 5 It is a cross-sectional view illustrating a variation of the first embodiment;

[0024] Figure 6 This is a cross-sectional view illustrating another variation of the first embodiment;

[0025] Figure 7 This is a sectional view illustrating a second embodiment of the lamp tube of this utility model;

[0026] Figure 8 This is a sectional view illustrating the third embodiment of the lamp tube of this utility model;

[0027] Figure 9 It is a cross-sectional view illustrating a variation of the third embodiment. Detailed Implementation

[0028] Before this utility model is described in detail, it should be noted that similar elements are represented by the same reference numerals in the following description.

[0029] See Figure 1 , 2 A first embodiment of the lamp tube of this utility model includes a lamp tube unit 1, a bracket unit 2, a light-emitting unit 3, and a clipping unit 4. The lamp tube is used, for example, in indoor lighting, table lamps, advertising light boxes, etc.

[0030] See Figure 3 The lamp unit 1 includes a lamp tube section 11 extending along a length direction L and two end cap sections 12. The lamp tube section 11 is cylindrical with a circular cross-section, defining a central axis C, and has two opposing openings 101. The end cap sections 12 respectively cover the openings 101 of the lamp tube section 11.

[0031] The bracket unit 2 includes four mounting rails 21 disposed on the inner wall surface of the lamp tube section 11. Each mounting rail 21 defines a mounting space 201 extending along the length direction L. Each mounting rail 21 has two spaced-apart rails 211 extending along the length direction L, the rails 211 being parallel to each other and facing each other. Each rail 211 has an L-shaped cross-section and has a protrusion 212 protruding from the inner wall surface of the lamp tube section 11 toward the central axis C, and an extension 213 connecting the protrusion 212. The extensions 213 extend facing each other.

[0032] The rail 211 of the bracket unit 2 is made of transparent material. Therefore, it is not easy for a dark area to form at the junction of the lamp tube part 11 and the rail 211, so that the light emission of the lamp is more uniform.

[0033] In the first embodiment, with the central axis C as the axis, the included angle between adjacent mounting tracks 21 is approximately 90°. The mounting tracks 21 of the bracket unit 2 do not overlap with the central axis C of the lamp tube section 11. Specifically, the shortest distance between each mounting track 21 and the central axis C is less than or equal to 1 / 2 of the diameter of the lamp tube section 11, and greater than or equal to 1 / 3 of the diameter of the lamp tube section 11. Since the mounting tracks 21 do not penetrate the central axis C, compared with the prior art configuration where the carrier plate penetrates the central axis C, the material consumption is significantly reduced, and the overall manufacturing cost is lowered.

[0034] The light-emitting unit 3 includes four light strips 31 and a controller 32 electrically connected to the light strips 31. The light strips 31 are respectively disposed in the mounting space 201. Each light strip 31 radially abuts against the extension 213 and is laterally limited by the protrusion 212, with its light-emitting surface 314 facing away from the central axis C and towards the inner wall surface of the lamp tube portion 11. The protrusion 212 and the extension 213 provide a more secure clamping mechanism for the light strips 31 within the mounting track 21.

[0035] Each light strip 31 has a circuit board 311, a plurality of light-emitting elements 312 mounted on the circuit board 311, and a plurality of encapsulations 313 respectively covering the light-emitting elements 312. Each encapsulation 313 abuts against the inner wall surface of the lamp tube portion 11, thus preventing each light strip 31 from shaking. Since the light strip 31 is positioned away from the central axis C, and its light-emitting surface 314 all faces the inner wall surface of the lamp tube portion 11, the optical path of light reaching the inner wall surface of the lamp tube portion 11 can be significantly reduced, thereby increasing the light intensity transmitted through the lamp tube portion 11 and reducing glare. In this embodiment, the light-emitting element 312 is an LED.

[0036] The clamping unit 4 includes two clamping parts 41. For ease of explanation, Figures 1 to 3Only one of the clamping components 41 is shown. Each clamping component 41 includes a mounting bracket 411, two clamping pieces 412 connected to the mounting bracket 411, two mounting guide pieces 413, and a cushioning material 414. The mounting bracket 411 has a screw hole 401. The clamping pieces 412 clamp the periphery of the lamp tube section 11. The clamping pieces 412 hold the outer periphery of the lamp tube unit 1. The mounting guide pieces 413 extend from the clamping pieces 412 in a direction opposite to the mounting bracket 411, and the distance between them gradually widens in the direction opposite to the mounting bracket 411. The cushioning material 414 covers the outer surfaces of the clamping pieces 412 and the mounting guide pieces 413.

[0037] In the first embodiment, the number of light strips 31 and the number of mounting rails 21 are both four. However, in other embodiments, the number of light strips 31 can be one, two, or three, as long as the number of light strips 31 is less than or equal to the number of mounting rails 21. Therefore, manufacturers can standardize the production specifications of the bracket unit 2, and users can use the same specification of lamps and install different numbers of light strips 31 according to actual conditions.

[0038] Figure 4 This is a variation of the first embodiment, the difference being that the lamp unit 1 further includes an outer tube 13 sleeved on the lamp part 11. The outer tube 13 is a hollow cylinder and is made of glass. By adding the outer tube 13, the lamp of this invention is less prone to deformation due to heat when used in higher temperature environments.

[0039] Figure 5 This is a variation of the first embodiment. Each of the rails 211 has a straight cross-section and includes a flat plate portion 214 and a stepped portion 215 protruding from the flat plate portion 214 toward the inner wall of the lamp tube portion 11. The flat plate portion 214 extends in opposite directions. Each lamp strip 31 abuts radially against the flat plate portion 214 and is laterally limited by the stepped portion 215.

[0040] See Figure 6 This is another variation of the first embodiment. The support unit 2 includes three mounting rails 21 disposed on the inner wall surface of the lamp tube section 11. Each rail 211 has a straight cross-section, and its structure is similar to... Figure 4 The same applies, and will not be repeated here. With the central axis C as the axis, the included angle between adjacent mounting rails 21 is approximately 120°.

[0041] See Figure 7A second embodiment of the lamp fixture of this utility model differs from the first embodiment in that the lamp tube portion 11 is square tubular with a rectangular cross-section, defining a central axis C. The following description only addresses the differences; similarities will not be repeated.

[0042] The mounting tracks 21 are respectively installed on the four sides of the rectangle, and the light strips 31 are respectively disposed in the mounting spaces 201 of the mounting tracks 21. Specifically, the shortest distance between each mounting track 21 and the central axis C is less than or equal to 1 / 2 of the side length of the cross section of the lamp tube section 11, and greater than or equal to 1 / 3 of the side length of the cross section of the lamp tube section 11.

[0043] See Figure 8 A third embodiment of the lamp fixture of this utility model differs from the first embodiment in that: the light-emitting unit 3 includes two light strips 31. The cross-section of the lamp tube portion 11 is elliptical. The support unit 2 includes two mounting tracks 21 disposed on the inner wall surface of the lamp tube unit 1. Each mounting track 21 has two rails 211 protruding towards each other from the inner wall surface of the lamp tube unit 1. The cross-section of the rails 211 is straight, and each rail provides radial abutment for the light strips 31.

[0044] See Figure 9 Another embodiment of the third embodiment differs in that the cross-section of the lamp tube portion 11 is generally elongated elliptical, and has two parallel spaced planar segments 111 and two arcuate segments 112 connected between the planar segments 111. The arcuate segments 112 are respectively provided for the mounting rail 21.

[0045] The third embodiment is characterized in that, with only a smaller number of light strips 31 required, the material required for manufacturing can be further reduced by means of the generally elliptical lamp tube portion 11, thereby achieving the effect of reducing costs.

[0046] In summary, the present invention, because the mounting track 21 does not penetrate the central axis C, significantly reduces material consumption and overall manufacturing costs compared to the prior art configuration where the carrier plate penetrates the central axis. Furthermore, since the light strip 31 is positioned away from the central axis C and its light-emitting surface 314 faces the inner wall of the lamp tube 11, the optical path to the inner wall of the lamp tube 11 is significantly reduced, thereby increasing the light intensity transmitted through the lamp tube 11 and reducing glare. Moreover, the track 211 of the bracket unit 2 is made of transparent material, making it less likely for a dark area to form at the junction of the lamp tube 11 and the track 211, resulting in more uniform light emission and thus achieving the intended purpose of this invention.

[0047] The above description is merely a specific embodiment of this utility model and should not be construed as limiting the scope of the claims of this utility model. Equivalent variations made based on the contents of the claims and description of this utility model should also be covered by the scope of the claims of this utility model.

Claims

1. A lamp comprising a lamp tube unit, a support unit, and a light emitting unit, the lamp tube unit comprising a lamp tube portion extending along a length direction, the lamp tube portion defining a central axis, the light emitting unit comprising a light bar having a circuit board, a plurality of light emitting elements mounted on the circuit board, and a plurality of encapsulating elements respectively covering the light emitting elements, the light bar having a light emitting surface facing away from the central axis and towards an inner wall surface of the lamp tube portion, characterized in that: The bracket unit comprises at least one mounting rail arranged on the inner wall surface of the lamp tube portion, the mounting rail defining a mounting space extending along the length direction, the bracket unit not overlapping with the central axis of the lamp tube portion, the number of the lamp strips being less than or equal to the number of the mounting rails, the lamp strips being arranged in the mounting space, and each of the encapsulating members abutting against the inner wall surface of the lamp tube portion.

2. The luminaire of claim 1, wherein: The mounting rail of the bracket unit has two rail bars extending along the length direction and spaced apart from each other, the rail bars being arranged in parallel and opposite to each other.

3. The luminaire of claim 2, wherein: Each of the rail bars of the mounting rail has a protruding portion protruding from the inner wall surface of the lamp tube portion toward the central axis, and an extending portion connecting the protruding portion, the extending portion extending in opposite directions, the lamp strip abutting against the extending portion in the radial direction and being laterally limited by the protruding portion.

4. The luminaire of claim 2, wherein: Each of the rail bars of the mounting rail has a flat plate portion extending in opposite directions.

5. The luminaire of claim 4, wherein: Each of the rail bars further has a step portion protruding from the flat plate portion toward the inner wall surface of the lamp tube portion, the lamp strip abutting against the flat plate portion in the radial direction and being laterally limited by the step portion.

6. The luminaire of any of claims 3-5, wherein: The cross section of the lamp tube portion is circular.

7. The luminaire of claim 3, wherein: The cross section of the lamp tube portion is rectangular.

8. The light fixture of claim 1, wherein: The lamp further comprises a clamping unit, wherein the clamping unit comprises a mounting frame and two clamping pieces connected to the mounting frame, the clamping pieces clamping the periphery of the lamp tube portion.

9. The light fixture of claim 1, wherein: The bracket unit is made of transparent material.

10. The luminaire of any one of claims 1-5, wherein: The cross section of the lamp tube portion is approximately elliptical.

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