CN102537788B - Focusable projection lamp - Google Patents

Abstract

The invention relates to the technical field of lighting lamps, in particular to a focus-adjustable projection lamp, which comprises a shell with an opening at the upper end, wherein a light source plate, a luminous light source and a reflecting cup are arranged in the shell, a cylindrical connecting part is arranged at the bottom of the shell, the light source plate and the connecting part are connected through a focusing device capable of driving the light source plate to move up and down, the focusing device comprises a radiator and a rotating sleeve, a limiting part for limiting the relative axial movement of the rotating sleeve and the radiator is arranged at the inner side of the rotating sleeve, the limiting part is connected with the radiator, a jacking inclined surface is arranged at the upper end of the rotating sleeve, a corresponding inclined surface correspondingly matched with the jacking inclined surface is arranged at the lower end of the connecting part, the jacking inclined surface of the rotating sleeve is matched and connected on the corresponding inclined surface of the connecting part, and the, when adjusting, the illuminated area and the light brightness can be effectively set, and the decorative effect is enhanced.

Description

adjustable focus projector light

Technical field:

The invention relates to the technical field of lighting fixtures, in particular to an adjustable focus projection lamp.

Background technique:

Projector lamps can be used for architectural decorative lighting, as well as to outline the outline of large buildings, with obvious decorative effects. Existing projection lamps include a housing, a light source board, a light source, and a reflector. The light of the light source is condensed by the reflector and radiated out. However, the light source plate, light source, reflector and housing of the projection lamp with this structure are all fixed structures, and the distance between the light source and the reflector is also fixed, so the irradiation range of the projection lamp cannot be adjusted.

Invention content:

The object of the present invention is to provide an adjustable focus projection lamp capable of adjusting the focal length to change the size of the irradiation range in view of the shortcomings of the prior art.

The object of the present invention is achieved through the following technical measures:

An adjustable focus projection lamp, which includes a shell with an upper end opening, a light source board, a light source installed on the light source board, a reflector cup set above the light source, and a cylindrical connection part at the bottom of the shell The light source board and the connection part are connected by a focusing device that can drive the light source board to move up and down. , the inner side of the rotating sleeve is provided with a limiting part that restricts the relative axial movement of the rotating sleeve and the radiator. The limiting part is connected to the radiator. Corresponding to the inclined surface, the jacking inclined surface of the rotating sleeve is mated and connected to the corresponding inclined surface of the connecting part, and the light source board is fixedly connected to the top of the radiator.

A lamp cap is connected to the bottom of the radiator.

The lamp cap and the radiator are connected by a pin shaft, and a retaining spring is clamped on the outside of the lamp cap. The limit part of the rotating sleeve is a ring-shaped flange structure protruding from the inner side of the bottom of the rotating sleeve. The limit part is located between the retaining spring and the cooling between the bottom of the device.

A spring is connected between the light source board and the casing.

The circumferential outer surface of the radiator is protruded with a plurality of axial guide strips, and the inner surface of the connecting part is provided with a plurality of guide grooves corresponding to the guide strips, and the guide strips are slidably connected in the guide grooves.

The upper end of the reflective cup is provided with light-transmitting glass.

A plurality of cooling fins are formed on the outer surface of the housing.

The light source is an LED chip.

The outer surface of the rotating sleeve is protruded with anti-skid bumps.

A plurality of protrusions are protruded on the lifting slope, and a plurality of recesses corresponding to the protrusions are provided on the corresponding slope, and the protrusions are clamped in the recesses.

The beneficial effects of the present invention are:

The present invention comprises a casing with an upper end opening, a light source board, a light source, and a reflective cup are arranged inside the casing, and a cylindrical connecting part is arranged at the bottom of the casing, and an adjustment device that can drive the light source board to move up and down is passed between the light source board and the connecting part. The focusing device is connected to the focusing device. The focusing device includes a radiator and a rotating sleeve. The inner side of the rotating sleeve is provided with a limiting part that limits the relative axial movement of the rotating sleeve and the radiator. The limiting part is connected with the radiator. The upper end of the rotating sleeve is provided with a jacking Slope, the lower end of the connecting part is provided with a corresponding slope corresponding to the jacking slope, the jacking slope of the rotating sleeve is connected to the corresponding slope of the connecting part, and the light source board is fixedly connected to the top of the radiator. Under the interaction between the inclined surface and the corresponding inclined surface, the rotating sleeve simultaneously produces a lifting movement, and the rotating sleeve simultaneously drives the radiator and the light source board to move up and down, so that the distance between the light source and the reflector cup is changed, thereby adjusting the irradiation range of the projection lamp. The focal length can be adjusted by rotating the rotating sleeve, which is convenient to use and adjust, and can effectively set the area to be illuminated and the brightness of the light during adjustment, and enhance the decorative effect.

Description of drawings:

Fig. 1 is a structural representation of the present invention;

Fig. 2 is the exploded schematic view of the present invention;

Fig. 3 is a sectional view of the present invention;

Fig. 4 is the structural representation of housing of the present invention;

Fig. 5 is a structural schematic diagram of a rotating sleeve of the present invention;

Detailed ways:

The present invention will be further described below in conjunction with the accompanying drawings. As shown in FIGS. A plurality of light sources 3 on the board 2, and a plurality of reflective cups 4 arranged above the light source 3, the reflective cups 4 are arranged correspondingly to the light source 3, the upper end of the reflective cup 4 is provided with a light-transmitting glass 41, and the light source plate 2 is made of aluminum The substrate has good heat dissipation performance, and the luminous light source 3 is an LED chip, which is energy-saving and environmentally friendly, and has a long service life. The bottom of the housing 1 is provided with a cylindrical connecting part 11, and the light source board 2 and the connecting part 11 are connected by a focusing device that can drive the light source board 2 to move up and down. The focusing device includes a vertical sliding connection in the connecting part 11 The hollow cylindrical radiator 5 and the rotating sleeve 6 are located on the rotating sleeve 6 outside the radiator 5, and the inside of the rotating sleeve 6 is provided with a limiting part 61 that limits the relative axial movement of the rotating sleeve 6 and the radiator 5. The limiting part 61 Connected with the radiator 5, the upper end of the rotating sleeve 6 is evenly provided with two jacking slopes 62 along the circumference, and the lower end of the connecting part 11 is provided with a corresponding slope 12 corresponding to the lifting slopes 62, and the lifting slopes 62 of the rotating sleeve 6 are matched. Connected to the corresponding slope 12 of the connecting portion 11 , the light source board 2 is fixedly connected to the top of the radiator 5 .

The bottom of the radiator 5 is connected with a lamp holder 7, which is convenient for the projection lamp to be installed on the lamp holder. The lamp cap 7 and the radiator 5 are connected by a pin shaft 8, the positioning is accurate, and the installation is convenient. The limiting part 61 is an annular flange structure protruding from the inner side of the bottom of the rotating sleeve 6, and the limiting part 61 is located in the annular groove between the snap spring 9 and the bottom of the radiator 5, so that the limiting part 61 can only rotate But it cannot move axially relative to the radiator 5 .

The circumferential outer surface of the radiator 5 is convexly provided with a plurality of axial guide strips 51, and the inner surface of the connecting portion 11 is provided with a plurality of guide grooves 13 corresponding to the guide strips 51, and the guide strips 51 are slidably connected to the guide grooves 13. Among them, the guide bar 51 and the guide groove 13 play a guiding role, and at the same time increase the contact area between the radiator 5 and the housing 1, so that the heat of the radiator 5 can be quickly transferred to the housing 1, and the heat dissipation effect is good. The outer surface of the casing 1 is formed with a plurality of heat sinks 14, which increases the heat dissipation area. When the light source 3 is working and illuminated, the heat generated by the light source 3 is transmitted to the light source board 2, and the light source board 2 passes through the radiator 5. The heat is transferred to the housing 1 , and the heat is dissipated promptly and quickly through the heat sink 14 of the housing 1 , thereby improving the heat dissipation effect of the adjustable focus projection lamp and avoiding shortening the service life of the light source 3 .

The outer surface of the rotating sleeve 6 is protruded with anti-skid bumps 63 to increase the friction between the hand and the rotating sleeve 6 . A plurality of convex portions 621 are protruded on the jacking slope 62, and a plurality of concave portions 121 corresponding to the convex portions 621 are provided on the corresponding slope 12, and the convex portions 621 are clamped in the concave portions 121. Each convex portion 621 and concave portion 121 form a plurality of adjustment gears. After the adjustment is completed, the rotating sleeve 6 can be locked on the corresponding gear, and the convex portion 621 can be engaged in different concave positions by rotating the rotating sleeve 6. Just can adjust the projection lamp irradiation range size in the part 121, use and adjust conveniently. A spring 10 is connected between the light source board 2 and the housing 1, and the spring 10 continuously provides an upward force for the light source board 2 and the rotating sleeve 6, so that the convex portion 621 of the rotating sleeve 6 can be automatically engaged and locked in the corresponding concave portion In 121, prevent rotation sleeve 6 from getting loose.

The working principle of the present invention is: when the rotating sleeve 6 is rotated counterclockwise, the rotating sleeve 6 will simultaneously produce a downward movement under the interaction between the jacking slope 62 and the corresponding slope 12, and the rotating sleeve 6 will drive the radiator 5 and the light source board 2 at the same time. and the light-emitting light source 3 descending movement, so that the distance between the light-emitting light source 3 and the reflector 4 becomes larger, thereby reducing the reflection angle of the light and reducing the irradiation range of the projection lamp; Under the interaction of 12, the rotating sleeve 6 simultaneously produces an upward movement, and the rotating sleeve 6 simultaneously drives the radiator 5, the light source plate 2 and the light source 3 to move upward, so that the distance between the light source 3 and the reflector 4 becomes smaller, so that the light reflects The larger the angle, the wider the range of the projection light. The present invention can adjust the focal length by rotating the rotating sleeve 6, is convenient to use and adjust, can effectively set the area to be illuminated and the brightness of the light during adjustment, and enhance the decorative effect.

Finally, it should be noted that the above embodiments are only used to illustrate the technical solutions of the present invention, rather than limiting the protection scope of the present invention, although the present invention has been described in detail with reference to the preferred embodiments, those of ordinary skill in the art should understand , the technical solution of the present invention may be modified or equivalently replaced without departing from the spirit and scope of the technical solution of the present invention.

Claims (10)

1. An adjustable focus projection lamp, which includes a casing (1) with an upper end opening, a light source board (2), a light source (3) arranged on the light source board (2), a setting The reflector cup (4) above the light source (3) is characterized in that: the bottom of the housing (1) is provided with a cylindrical connection part (11), between the light source board (2) and the connection part (11) It is connected by a focusing device that can drive the light source board (2) to move up and down. The focusing device includes a cylindrical radiator (5) that is vertically slidably connected in the connecting part (11), and a rotating sleeve (6) that is arranged on the radiator. (5) the outer rotating sleeve (6), the inner side of the rotating sleeve (6) is provided with a limiting part (61) that limits the relative axial movement of the rotating sleeve (6) and the radiator (5), and the limiting part (61) and The radiator (5) is connected, the upper end of the rotating sleeve (6) is provided with a jacking slope (62), the lower end of the connecting part (11) is provided with a corresponding slope (12) corresponding to the jacking slope (62), and the rotating sleeve (6 ) of the jacking slope (62) is connected to the corresponding slope (12) of the connecting part (11), and the light source board (2) is fixedly connected to the top of the radiator (5). 2. The adjustable focus projection lamp according to claim 1, characterized in that: a lamp cap (7) is connected to the bottom of the radiator (5). 3. The adjustable focus projection lamp according to claim 2, characterized in that: the lamp head (7) is connected to the radiator (5) through a pin shaft (8), and the outside of the lamp head (7) is clamped with a clamp Spring (9), the limiting portion (61) of the rotating sleeve (6) is an annular flange structure protruding from the inner side of the bottom of the rotating sleeve (6), and the limiting portion (61) is located between the retaining spring (9) and the radiator. between the bottom of (5). 4. The adjustable focus projection lamp according to claim 1, characterized in that a spring (10) is connected between the light source board (2) and the casing (1). 5. The adjustable focus projection lamp according to claim 1, characterized in that: the circumferential outer surface of the heat sink (5) is protruded with a plurality of axial guide strips (51), and the connecting part (11) The inner surface of the inner surface offers a plurality of guide grooves (13) correspondingly matched with the guide bars (51), and the guide bars (51) are slidably connected in the guide grooves (13). 6. The adjustable focus projection lamp according to claim 1, characterized in that: the upper end of the reflector cup (4) is provided with a light-transmitting glass (41). 7. The adjustable focus projection lamp according to claim 1, characterized in that: the outer surface of the casing (1) is formed with a plurality of cooling fins (14). 8. The adjustable focus projection lamp according to claim 1, characterized in that: the light emitting source (3) is an LED chip. 9. The adjustable focus projection lamp according to claim 1, characterized in that: the outer surface of the rotating sleeve (6) is protruded with anti-skid bumps (63). 10. The adjustable focus projection lamp according to any one of claims 1-9, characterized in that: the jacking slope (62) is provided with a plurality of protrusions (621), corresponding to the slope (12) A plurality of concave parts (121) correspondingly matched with the convex parts (621) are opened on the top, and the convex parts (621) are clamped in the concave parts (121).

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