CN103836405B - Light fixture - Google Patents

Abstract

A lamp, comprising: a lamp housing with a light outlet and a limiting groove; a lens attached to the light outlet, and its size is adapted to the size of the light outlet; a guide rail, accommodated in the lamp housing, and fixed with the lamp housing connection, the guide rail is set close to the limit groove; the light source structure is accommodated in the lamp housing, and the light source structure is slidable relative to the guide rail. The light source structure includes a light source located on the optical axis of the lens and set towards the light outlet; The limit groove of the lamp housing is penetrated and fixedly connected with the light source structure; wherein, the light source structure is driven to slide relative to the guide rail through the adjustment knob, so that the light source moves toward or away from the lens. The above-mentioned lamp moves the light source connected to it by adjusting the knob, moves back and forth along the guide rail, changes the distance between the light source and the lens, and thus changes the focus point of the light emitted by the light source on the lens, so that the entire lamp does not move its position. The function of adjusting the range of light irradiation and the brightness of light can be realized.

Description

lamps

【Technical field】

The invention relates to a lighting device, in particular to a lamp with adjustable irradiation range and brightness.

【Background technique】

The relative positions of the light source and the lens installed in the existing lamps are generally fixed or manually adjusted. Because during the use of the lamp, if it is necessary to adjust the range of light irradiation or the brightness of the light without changing the position of the entire lamp, the existing lamp structure is not easy to realize.

【Content of invention】

In view of the above situation, it is necessary to provide a lamp, which is simple and reliable, and can adjust the size of the range of light irradiation and the brightness of the light.

A light fixture comprising:

The lamp housing has a long cylindrical structure, the lamp housing has a light outlet and a limiting groove, the light outlet is arranged at the front end of the lamp housing, and the limiting groove is set on the side wall of the lamp housing;

a lens attached to the light outlet, the size of the lens matches the size of the light outlet, and the lens has an optical axis;

a guide rail, accommodated in the lamp housing, and fixedly connected with the lamp housing, and the guide rail is arranged close to the limiting groove;

a light source structure, accommodated in the lamp housing, the light source structure is slidable relative to the guide rail, the light source structure includes a light source located on the optical axis of the lens and facing the light outlet; and

The adjusting knob is slidably passed through the limiting groove of the lamp housing, and is fixedly connected with the light source structure;

Wherein, the adjustment knob passes through the limiting groove and is partially exposed outside the side wall of the lamp housing, and the light source structure is driven to slide relative to the guide rail through the adjustment knob, so that the light source is directed towards or Move away from the lens.

The above-mentioned lamp moves the light source connected to it by adjusting the knob, moves back and forth along the guide rail, changes the distance between the light source and the lens, and thus changes the focus point of the light emitted by the light source on the lens, so that the entire lamp does not move its position. The function of adjusting the range of light irradiation and the brightness of light can be realized.

In one embodiment, the guide rail is arranged close to the inner wall of the lamp housing, and the guide rail is provided with a slot corresponding to the limiting groove, and the adjusting knob passes through the limiting groove After the slot and the slot, it is fixedly connected with the light source structure.

In one of the embodiments, the light source structure further includes a light source fixing plate, the light source fixing plate is arranged opposite to the light outlet, the adjustment knob is fixedly connected to the light source fixing plate, and the light source fixing plate is driven by the adjustment knob. The light source fixing plate slides relative to the guide rail, and the light source is fixed on a surface of the light source fixing plate opposite to the light outlet.

In one of the embodiments, the light source structure further includes a reflective cup, the reflective cup is fixed on the surface of the light source fixing plate opposite to the light outlet, the light source is accommodated in the reflective cup, wherein the The light emitted by the light source, after being reflected by the reflector cup, is incident on the lens, refracted by the lens and then transmitted out.

In one of the embodiments, the light source structure further includes a heat dissipation block, the heat dissipation block is fixed on the surface of the light source fixing plate opposite to the light source, and is arranged correspondingly to the light source.

In one of the embodiments, the guide rail includes a base plate and two extensions bent and extended from opposite sides of the base plate toward the same side of the base plate, and the distance between the two extensions and the base plate is A guide groove is respectively formed, and the slot is opened on the base plate; a sliding piece protrudes from the edge of the light source fixing plate. The opposite sides of the sliding piece are held in the guide groove and can slide along the guiding groove; the adjusting knob is fixedly connected with the sliding piece.

In one of the embodiments, a fixing column with a screw hole is provided on a side of the sliding sheet close to the light source, and the adjusting knob is screwed to the fixing column.

In one of the embodiments, a dovetail-shaped guide groove is provided on the guide rail, and the light source structure further includes a lamp holder for fixing the light source, and a lamp holder is provided on the lamp holder to match the guide groove. A dovetail-shaped sliding boss, the adjusting knob is fixedly connected with the lamp holder.

In one of the embodiments, it also includes a U-shaped bracket and a threaded locking piece, the two ends of the U-shaped bracket are fixedly connected with the two opposite side walls of the lamp housing through the threaded locking piece, and the When the thread locking member is screwed, the lamp housing can rotate relative to the U-shaped bracket.

In one of the embodiments, the groove wall of the limiting groove of the lamp housing is provided with a plurality of limiting parts, and the driving shaft of the adjusting knob can be selectively aligned with one of the plurality of limiting parts. snap to position the adjustment knob.

【Description of drawings】

Fig. 1 is a perspective view of a lamp according to an embodiment of the present invention

Fig. 2 is a perspective view of the lamp shown in Fig. 1 after removing a part of the lamp housing;

Fig. 3 is a perspective view of an axial section of the lamp shown in Fig. 1;

Fig. 4 is an axial sectional view of the lamp shown in Fig. 1;

Fig. 5 is a perspective view of the guide rail of the lamp shown in Fig. 1;

Fig. 6 is a perspective view of a light source fixing plate of the lamp shown in Fig. 1 .

【detailed description】

In order to facilitate the understanding of the present invention, the present invention will be described more fully below with reference to the associated drawings. Preferred embodiments of the invention are shown in the accompanying drawings. However, the present invention can be embodied in many different forms and is not limited to the embodiments described herein. On the contrary, these embodiments are provided to make the understanding of the disclosure of the present invention more thorough and comprehensive.

It should be noted that when an element is referred to as being “fixed” to another element, it can be directly on the other element or there can also be an intervening element. When an element is referred to as being "connected to" another element, it can be directly connected to the other element or intervening elements may also be present. The terms "vertical," "horizontal," "left," "right," and similar expressions are used herein for purposes of illustration only.

Unless otherwise defined, all technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the technical field of the invention. The terms used herein in the description of the present invention are for the purpose of describing specific embodiments only, and are not intended to limit the present invention. As used herein, the term "and/or" includes any and all combinations of one or more of the associated listed items.

Referring to FIG. 1 and FIG. 2 , a lamp 100 according to an embodiment of the present invention includes a lamp housing 110 , a lens 120 , a guide rail 130 , a light source structure 160 , and an adjustment knob 170 . The lamp housing 110 serves as a carrier for other components of the lamp 100 . The lens 120 is used to adjust the light emitted by the light source structure 160 . The guide rail 130 is used for guiding the light source structure 160 when sliding in the lamp housing 110 . The light source structure 160 is driven to slide relative to the guide rail 130 by adjusting the knob 170 .

The lamp housing 110 has a light outlet 111 and a limiting slot 112 . The lamp housing 110 may be in the shape of a general lamp housing, for example, a long cylindrical structure, a disc-shaped housing structure, a cone-shaped housing structure, and the like. Specifically, in the illustrated embodiment, the lamp housing 110 has a long cylindrical structure, the light outlet 111 is provided at the front end 113 of the lamp housing 110 , and the limiting groove is opened on the side wall of the lamp housing 110 . Since the lamp housing 110 has a long cylindrical structure, the distance between the light source structure 160 and the lens 120 can be relatively large, so that the illumination range and brightness adjustment range of the lamp 100 are relatively large.

The lens 120 is attached to the light outlet 111 of the lamp housing 110, and the size of the lens 120 matches the size of the light outlet 111 of the lamp housing 110, that is, the lens 120 can be just clamped in the light outlet 111 of the lamp housing 110, or Located inside or outside of the light outlet 111 of the lamp housing 110 , and the size of the lens 120 is larger than that of the light outlet 111 of the lamp housing 110 , thereby sealing the light outlet 111 of the lamp housing 110 . The lens 120 has an optical axis, which is the center line of the light beam (light column), or the symmetry axis of the optical system, and the light beam rotates around this axis without any change in optical properties.

The guide rail 130 is accommodated in the lamp housing 110 and is fixedly connected with the lamp housing 110 . The guide rail 130 is disposed close to the limiting groove 112 of the lamp housing 110 . The guide rail 130 may be a straight rod-shaped slide rail, or a slide rail with a guide groove, or the like. In addition, the guide rail 130 can be directly fixed on the lamp housing 110 , or can be fixedly connected to the lamp housing 110 through other components. Specifically, in the illustrated embodiment, the guide rail 130 is arranged close to the inner wall of the lamp housing 110, and the guide rail 130 is provided with a slot 131 corresponding to the limit groove 112 of the lamp housing 110, and the adjusting knob 170 passes through the lamp housing 110. The limiting groove 112 and the slot 131 are then fixedly connected with the light source structure 150 .

In other embodiments, the two ends of the guide rail 130 can be fixedly connected to the front end 113 and the rear end 115 of the lamp housing 110 respectively; alternatively, two support plates are provided, which are set close to the front end 113 and the rear end 115 of the lamp housing 110 respectively. , at this time, the two ends of the guide rail 130 can be directly fixedly connected with the two support plates 191 respectively.

Please refer to FIG. 5 together. Specifically, in the illustrated embodiment, the guide rail 130 includes a base plate 133 and two extensions 135 bent and extended from opposite sides of the base plate 133 toward the same side of the base plate 133. The two extensions A guide groove 136 is respectively formed between 135 and the base plate 133 , and the slot 131 is opened on the base plate 133 .

Please also refer to FIG. 3 , the light source structure 160 is accommodated in the lamp housing 110 , and the light source structure 160 can slide relative to the guide rail 130 . The light source structure 160 includes a light source 161 located on the optical axis of the lens 120 and disposed toward the light outlet 111 .

Specifically, in the illustrated embodiment, the light source structure 160 further includes a light source fixing plate 163 , and the light source fixing plate 163 is disposed opposite to the light outlet 111 of the lamp housing 110 . The adjusting knob 170 is fixedly connected with the light source fixing plate 163 and the light source fixing plate 163 , so that the light source fixing plate 163 slides together with the adjusting knob 170 . The light source 161 is fixed on a surface of the light source fixing plate 163 opposite to the light outlet 111 . The light source 161 may be an LED, and in this case, the light source fixing board 163 may be an LED driving circuit board. Alternatively, the light source 161 is a small light bulb, a single-ended metal halide lamp, etc., and the light source fixing plate 163 is a bearing plate for fixing the lamp socket.

Further, a sliding piece 163a protrudes from the edge of the light source fixing plate 163 by bending. Two opposite sides of the sliding piece 163 a are locked in the guide groove 136 of the guide rail 130 and can slide along the guide groove 136 . The adjusting knob 170 is fixedly connected with the sliding piece 163a.

Further, the side of the sliding piece 163a close to the light source is provided with a fixing column 163b with a screw hole, and the adjusting knob 170 is screwed to the fixing column 163b.

In other embodiments, the guide rail 130 is provided with a dovetail-shaped guide groove, and the light source structure 160 also includes a lamp holder for fixing the light source, and a dovetail-shaped sliding boss matched with the guide groove is provided on the lamp holder. The adjusting knob 170 is fixedly connected with the lamp holder.

Please refer to FIG. 4 and FIG. 6 together, the adjusting knob 170 is rotatably passed through the lamp housing 110 . Specifically, in the illustrated embodiment, the adjusting knob 170 passes through the limiting groove 112 of the lamp housing 110 and is partially exposed outside the side wall of the lamp housing 110 . The adjustment knob 170 includes a knob 171 and a drive shaft 173 at one end of the adjustment knob 171. For example, the knob 171 is a plastic knob, and the drive shaft 173 can be a screw. At this time, the drive shaft 173 and the knob 171 can be integrally formed by insert molding. That is, the cap head of the screw fits into the plastic knob.

The driving shaft 173 of the adjusting knob 170 is screwed to the fixing column 163b of the light source fixing plate 163. In order to prevent the adjusting knob 170 from falling off, the driving shaft 173 of the adjusting knob 170 passes through the limit groove 112 of the lamp housing 110 and the slot 131 of the guide rail 130 It is screwed together with the stop nut.

Further, the light source structure 160 also includes a reflective cup 165, which is fixed on the surface of the light source fixing plate 163 opposite to the light outlet 111, and the light source 161 is accommodated in the reflective cup, wherein the light emitted by the light source 161 is reflected by the reflective cup 165 After that, it is incident on the lens 120, refracted by the lens 120 and transmitted out. Since the reflective cup 165 has a light-gathering effect, the light emitting brightness of the lamp 100 is relatively high.

Specifically, the reflective cup 165 is located between the support plate 191 and the light source fixing plate 163 , and the size of the light hole of the support plate 191 is larger than the size of the light outlet of the reflective cup 165 .

Further, the light source structure 160 further includes a heat dissipation block 167 , which is fixed on the surface of the light source fixing plate 163 opposite to the light source 161 and arranged correspondingly to the light source 161 . Specifically, in the illustrated embodiment, the heat dissipation block 167 is located between the connecting plate 193 and the light source fixing plate 163 . The heat dissipation block 167 includes a base 167a and a plurality of heat dissipation fins 167b disposed on the base 167a, and the plurality of heat dissipation fins 167b are arranged in parallel and at intervals. In addition, the base 167a is a circular plate, and a plurality of cooling fins together form a circular structure, so that the cooling block 167 is a cylindrical structure, and the light source 161 is set directly against the center of the cylindrical cooling block 167, thereby speeding up the cooling of the cooling block 167. cooling efficiency.

Further, the lamp 100 also includes a U-shaped bracket 195 and a threaded locking member 197, the two ends of the U-shaped bracket 195 are fixedly connected to two opposite side walls of the lamp housing 110 through the threaded locking member 197, and the threaded locking member 197 is loosened. , the lamp housing 110 can rotate relative to the U-shaped bracket 195 . Specifically in the illustrated embodiment, the threaded locking member 197 includes an adjustment cap head 197a and a threaded portion 197b, the threaded portion 197b is arranged at one end of the adjustment cap head 197a, and the threaded portion 197b passes through the end of the U-shaped bracket 195 and the lamp. The back of the side wall of the shell 110 is screwed with the nut to lock the U-shaped bracket 195, and the adjusting cap head 197a of the threaded locking member 197 can be twisted by hand. Since the lamp housing 110 can be rotated relative to the U-shaped bracket 195 , the illumination angle of the lamp 100 can be further adjusted. During installation, the lamp 100 can be fixed on the support through the U-shaped bracket 195 .

Further, the groove wall of the limiting groove 112 of the lamp housing 110 is provided with a plurality of limiting parts, and the driving shaft 173 of the adjustment knob 170 can be selectively engaged with one of the limiting parts for positioning adjustment. Knob 170. For example, the limiting part may be continuous elastic sawtooth.

The aforementioned lamp 100 can adjust the distance between the light source 161 and the lens 120 by hand by adjusting the knob 170 , so as to realize the functions of controlling the range of illumination of the light and adjusting the brightness of the light. When the above-mentioned lamp 100 is assembled, the light source fixing plate 163 of the light source structure 160 is clamped on the guide rail 130 , and the adjustment knob 170 is fixedly connected with the light source structure 160 . After the adjustment knob 170 is loosened, the light source structure 160 can be moved by the adjustment knob 170, and the distance between the light source 161 and the lens 120 can be adjusted, so as to adjust the focal point of the light emitted by the light source 161 on the lens 120, and the range of light irradiation can be realized. The size and brightness of the light can be adjusted.

Therefore, the above-mentioned lamp 100 moves the light source 161 connected to it through the adjustment knob 170, moves back and forth along the guide rail 130, changes the distance between the light source 161 and the lens 120, thereby changes the focal point of the light emitted by the light source 161 on the lens 120, thus In this way, the function of adjusting the range of illumination of the light and the brightness of the light can be realized without moving the position of the entire lamp 100 .

The above-mentioned embodiments only express several implementation modes of the present invention, and the description thereof is relatively specific and detailed, but should not be construed as limiting the patent scope of the present invention. It should be pointed out that those skilled in the art can make several modifications and improvements without departing from the concept of the present invention, and these all belong to the protection scope of the present invention. Therefore, the protection scope of the patent for the present invention should be based on the appended claims.

Claims (9)

1. A light fixture, characterized in that it comprises: The lamp housing has a long cylindrical structure, the lamp housing has a light outlet and a limiting groove, the light outlet is arranged at the front end of the lamp housing, and the limiting groove is set on the side wall of the lamp housing; a lens attached to the light outlet, the size of the lens matches the size of the light outlet, and the lens has an optical axis; a guide rail, accommodated in the lamp housing, and fixedly connected with the lamp housing, and the guide rail is arranged close to the limiting groove; a light source structure, accommodated in the lamp housing, the light source structure is slidable relative to the guide rail, the light source structure includes a light source located on the optical axis of the lens and facing the light outlet; and The adjusting knob is slidably passed through the limiting groove of the lamp housing, and is fixedly connected with the light source structure; Wherein, the adjustment knob passes through the limiting groove and is partially exposed outside the side wall of the lamp housing, and the light source structure is driven to slide relative to the guide rail through the adjustment knob, so that the light source is directed towards or moving away from said lens; The guide rail is arranged close to the inner side wall of the lamp housing, and the guide rail is provided with a slot corresponding to the limiting groove, and the adjusting knob passes through the limiting groove and the slot The light source structure is fixedly connected. 2. The lamp according to claim 1, wherein the light source structure further comprises a light source fixing plate, the light source fixing plate is arranged opposite to the light outlet, and the adjustment knob is fixedly connected to the light source fixing plate The light source fixing plate is driven to slide relative to the guide rail through the adjusting knob, and the light source is fixed on the surface of the light source fixing plate opposite to the light outlet. 3. The lamp according to claim 2, wherein the light source structure further comprises a reflective cup, the reflective cup is fixed on the surface of the light source fixing plate opposite to the light outlet, and the light source is housed in the In the reflective cup, wherein, the light emitted by the light source is reflected by the reflective cup, enters the lens, and is transmitted out after being refracted by the lens. 4. The lamp according to claim 2, wherein the light source structure further comprises a heat dissipation block, the heat dissipation block is fixed on the surface of the light source fixing plate opposite to the light source, and is connected to the light source corresponding settings. 5. The lamp according to claim 2, wherein the guide rail comprises a base plate and two extensions bent and extended from opposite sides of the base plate toward the same side of the base plate, the two A guide groove is respectively formed between the extension part and the base plate, and the slot is opened on the base plate; a sliding piece protrudes from the edge of the light source fixing plate, and the opposite sides of the sliding piece The adjusting knob is fixedly connected with the sliding plate and is held in the guide groove and slidable along the guide groove. 6 . The lamp according to claim 5 , wherein a fixing column with a screw hole is provided on a side of the sliding plate close to the light source, and the adjusting knob is screwed to the fixing column. 7 . 7. The lamp according to claim 1, wherein a dovetail-shaped guide groove is provided on the guide rail, and the light source structure further includes a lamp holder for fixing the light source, and the lamp holder is provided with A dovetail-shaped sliding boss matched with the guide groove, and the adjusting knob is fixedly connected with the lamp holder. 8. The lamp according to claim 1, further comprising a U-shaped bracket and a threaded locking piece, the two ends of the U-shaped bracket are connected to two opposite sides of the lamp housing through the threaded locking piece The wall is fixedly connected, and when the threaded locking member is unscrewed, the lamp housing can rotate relative to the U-shaped bracket. 9. The lamp according to claim 1, wherein a plurality of limiting parts are provided on the groove wall of the limiting groove of the lamp housing, and the driving shaft of the adjusting knob can be selectively connected with the plurality of limiting parts. One of the two stoppers is locked to position the adjustment knob.