Oven projection lamp

Abstract

The utility model provides an oven projection lamp which comprises a projection lens set shell, a lamp panel is arranged on the side portion of the projection lens set shell, lamp beads are arranged on the lamp panel, and a condensing lens, a film assembly box, a first imaging lens and a second imaging lens are sequentially and coaxially arranged in the projection lens set shell along a light path. And a replaceable film is arranged in the film assembly box. The baking oven projection lamp comprises the film assembling box with the replaceable film, when the film needs to be replaced, the original film is taken out, and then a new film is placed in, so that the film with any pattern can be replaced, and the film is not limited to several fixed types. Meanwhile, the film assembly box is located in the projection lens set shell, and the projection lens set shell is located in the lamp shell, so that the shape of the whole projection lamp is the shape of the lamp shell (such as a cylinder shape), and the projection lamp can be easily integrated into other equipment (such as an oven).

Description

Technical Field

[0001] The utility model belongs to the field of projection and relates to a baking oven projection lamp. Background Art

[0002] A projection lamp usually includes a base, a light source, and a projection film (film) with a printed pattern. The light emitted by the light source on the base is projected onto a light screen (used to receive the pattern) through the projection film, and a corresponding pattern can be formed on the light screen. At present, projection lamps on the market can replace projection films with different printed patterns, but their design is usually a disc-shaped plastic part, on which a plurality of circular openings are evenly opened, and projection films with different printed patterns are covered on the circular openings. The plastic part is then installed, and when it is necessary to replace projection films with different printed patterns, the plastic part is rotated, and the projection films covered on the different circular openings are transferred to the light path emitted by the light source. Although this type of projection lamp can replace different printed patterns, the printed patterns are fixed, and this type of projection lamp is difficult to integrate into equipment (such as an oven) due to its irregular shape. Utility Model Content

[0003] The utility model aims to provide a projection lamp for an oven, aiming to solve the problem that the types of printed patterns are fixed and difficult to be integrated into equipment (such as an oven).

[0004] In order to solve the above technical problems, the utility model provides an oven projection lamp, including a projection lens assembly shell, a lamp board is arranged on the side of the projection lens assembly shell, and lamp beads are arranged on the lamp board. A focusing lens, a film assembly box, a first imaging lens and a second imaging lens are coaxially arranged along the optical path in the interior of the projection lens assembly shell in sequence, and a film is detachably arranged in the film assembly box.

[0005] Furthermore, a heat sink is provided on a side of the lamp board away from the lamp beads.

[0006] Furthermore, the radiator is a multi-blade aluminum radiator.

[0007] Furthermore, the power of the lamp bead is 2-7W, and the light emitting angle of the lamp bead is 120°.

[0008] Furthermore, the lamp bead is electrically connected to a power source via a wire, and the wire is a power supply wire set with a magnetic ring.

[0009] Furthermore, the condensing lens is a plano-convex lens, the plane of the condensing lens is close to the side where the lamp beads are arranged, and the first imaging lens and the second imaging lens are double-sided convex lenses.

[0010] Furthermore, the lamp board is an aluminum circuit board, and the heat sink is connected to the lamp board by means of thermal conductive adhesive.

[0011] Furthermore, the oven projection lamp further comprises a lamp housing, a first convex rib is arranged in the lamp housing, an opening is arranged on the side of the projection lens assembly housing, and the first convex rib is movably fitted with the opening.

[0012] Furthermore, a strip groove is provided on the projection lens assembly shell, and the end of the film assembly box is movably matched with the strip groove. The film assembly box includes two detachably connected assembly frames, and the film is located in a limited space formed when the two assembly frames are attached.

[0013] Furthermore, an elastic member is arranged on the outer wall of the lamp housing.

[0014] Compared with the prior art, the beneficial effects of the utility model are:

[0015] 1. The oven projection lamp of the utility model includes a film assembly box for replacing films. When the film needs to be replaced, the original film is taken out and a new film is loaded. In this way, the film can be replaced with any pattern, not limited to a fixed number of patterns. At the same time, the film assembly box is located in the projection lens assembly shell, and the projection lens assembly shell is located in the lamp shell. Therefore, the shape of the overall projection lamp is the shape of the lamp shell (such as a cylinder), which is easy to integrate into other equipment (such as an oven);

[0016] 2. The oven projection lamp of the utility model uses a combination of two double-sided convex lenses and one plano-convex lens, which can achieve a clear projection effect of up to 500mm in diameter within a projection distance of 700mm;

[0017] 3. The oven projection lamp of the utility model adopts 3535 lamp beads with a power of 3W, and its luminous angle can reach 120°, and the image is clear after focusing;

[0018] 4. The oven projection lamp of the utility model adopts a multi-blade aluminum radiator, which has excellent heat dissipation effect, and the luminous lamp beads have good working durability at normal ambient temperature;

[0019] 5. The oven projection lamp of the utility model adopts a magnetic loop wire group, which can resist interference and make the projected pattern stable. BRIEF DESCRIPTION OF THE DRAWINGS

[0020] Figure 1 This is a schematic diagram of the structure of the oven projection lamp of the utility model;

[0021] Figure 2 It is a partial structural schematic diagram of the oven projection lamp of the utility model;

[0022] Figure 3 It is a cross-sectional view of the oven projection lamp of the utility model;

[0023] Figure 4 It is a schematic diagram of the lamp housing, radiator and other structures of the oven projection lamp of the utility model;

[0024] Figure 5 It is a schematic diagram of the structure of the projection mirror housing, condenser lens, etc. in the utility model.

[0025] Among them, 1. lamp housing; 2. projection lens assembly housing; 3. lamp board; 4. lamp beads; 5. focusing lens; 6. film assembly box; 6a, assembly frame; 7. first imaging lens; 8. second imaging lens; 9. film; 10. heat sink; 11. first convex rib; 12. opening; 13. strip groove; 14. elastic member; 15. second convex rib. DETAILED DESCRIPTION

[0026] The following is a further detailed description of a grill projection lamp proposed by the utility model in combination with the accompanying drawings and specific embodiments. According to the following description, the advantages and features of the utility model will be more clear. It should be noted that the accompanying drawings are all in a very simplified form and are not in precise proportions, which are only used to conveniently and clearly assist in explaining the purpose of the embodiments of the utility model. The same or similar reference numerals in the accompanying drawings represent the same or similar components.

[0027] The utility model provides a grill projection lamp, referring to Figures 1 to 5 , comprising a lamp housing 1, a projection lens assembly housing 2 arranged inside the lamp housing 1, a lamp board 3 arranged on the side of the projection lens assembly housing 2, a lamp bead 4 arranged on the lamp board 3, a focusing lens 5, a film assembly box 6, a first imaging lens 7 and a second imaging lens 8 coaxially arranged along the optical path inside the projection lens assembly housing 2, and a replaceable film 9 is installed in the film assembly box 6.

[0028] Among them, when the lamp bead 4 is energized, the light it emits passes through the focusing lens 5, the film 9, the first imaging lens 7 and the second imaging lens 8 in sequence, and is first converted into parallel light by the focusing lens. The parallel light is irradiated to the film, and then the image is magnified by the first imaging lens and the second imaging lens, while keeping the image clear).

[0029] Specifically, the film 9 has a size of 8.0 cm×8.0 cm and a thickness of 0.55 cm. The film 9 has a projection pattern, which has a size of 4.8 cm×4.8 cm.

[0030] refer to Figure 2 A heat sink 10 is provided on the side of the lamp board 3 away from the lamp beads 4 .

[0031] Specifically, the radiator 10 is a multi-blade aluminum radiator with excellent heat dissipation effect, and the lamp beads 4 have good working durability at normal ambient temperature.

[0032] refer to Figure 2 The power of the lamp bead 4 is 2-7W, and the light emitting angle of the lamp bead 4 is 120°.

[0033] Specifically, the lamp bead 4 is an imported 3535 lamp bead 4 with a power of 3W, and the image is clear after focusing.

[0034] Specifically, the lamp bead 4 is electrically connected to a power source through a wire (not shown in the figure). The wire is a power supply wire group with a magnetic ring (not shown in the figure). The use of a magnetic ring wire group can resist interference and ensure stable projection.

[0035] refer to Figure 5 The focusing lens 5 is a plano-convex lens, the plane of the focusing lens 5 is close to the side where the lamp bead 4 is arranged, the first imaging lens 7 and the second imaging lens 8 are double-sided convex lenses, and a combination of two double-sided convex lenses and one plano-convex lens is adopted, which can project a clear image with a diameter of up to 500mm within a distance of 700mm.

[0036] Specifically, the lamp board 3 is an aluminum circuit board, which may be a 10×10 square aluminum circuit board, and the heat sink 10 is connected to the lamp board 3 by bonding with thermal conductive adhesive.

[0037] refer to Figure 3 A first convex rib 11 is provided in the lamp housing 1, and an opening 12 is provided on the side of the projection lens assembly housing 2. The first convex rib 11 is movably fitted with the opening 12. During assembly, the opening 12 of the projection lens assembly housing 2 is matched with the first convex rib 11 provided in the lamp housing 1, so that the position of the projection lens assembly housing 2 can be fixed and the projection lens assembly housing 2 can be prevented from rotating.

[0038] refer to Figure 3 The projection lens assembly shell 2 is provided with a strip groove 13, and the end of the film assembly box 6 is movably matched with the strip groove 13. The film assembly box 6 includes two detachably connected assembly frames 6a, and the film 9 is located in a limited space formed when the two assembly frames 6a are attached. During assembly, the film 9 is installed in the two assembly frames 6a, and then the two assembly frames 6a are connected, and then the end of the film 9 is matched with the strip groove 13, so that the position of the film 9 assembly box 6 is fixed. When the film 9 needs to be replaced, the reverse operation is performed, the original film 9 is taken out, and then the new film 9 is loaded according to the above steps. In this way, the film 9 of any pattern can be replaced, not limited to the fixed ones. The film assembly box 6 is located in the projection lens assembly shell 2, and the projection lens assembly shell 2 is located in the lamp housing 1, so the overall shape of the projection lamp is the shape of the lamp housing 1 (such as a cylindrical shape), which is easy to be integrated into other equipment (such as an oven).

[0039] Specifically, the two assembly frames 6a are buckled with each other (one has an elastic body, and the other has a slot, and the elastic body and the slot are interference-fitted) to achieve a detachable connection.

[0040] refer to Figure 1An elastic member 14 is disposed on the outer wall of the lamp housing 1, and is inserted into the space reserved on the oven for placing the projection lamp through the elastic member 14.

[0041] Specifically, the lamp housing 1 includes two detachably connected half shells (one with a buckle and the other with a slot), and the two half shells form the cylindrical lamp housing 1 when buckled together.

[0042] refer to Figure 5 A plurality of pairs of second convex ribs 15 (for example, three pairs) are arranged in the projection lens assembly housing 2, and the focusing lens 5, the first imaging lens 7 and the second imaging lens 8 are respectively located in the limiting spaces formed by the three pairs of second convex ribs 15.

[0043] The above description is only a description of the preferred embodiment of the utility model, and is not any limitation on the scope of the utility model. Any changes and modifications made by ordinary technicians in the field of the utility model based on the above disclosure shall fall within the scope of protection of the claims.

Claims

1. A projection lamp for an oven, characterized in that: The invention comprises a projection lens assembly shell (2), a lamp board (3) is arranged on the side of the projection lens assembly shell (2), lamp beads (4) are arranged on the lamp board (3), a condenser lens (5), a film assembly box (6), a first imaging lens (7) and a second imaging lens (8) are coaxially arranged in sequence along the optical path inside the projection lens assembly shell (2), and a film (9) is detachably arranged inside the film assembly box (6).

2. The oven projection lamp according to claim 1, characterized in that: A heat sink (10) is provided on the side of the lamp board (3) facing away from the lamp beads (4).

3. The oven projection lamp according to claim 2, characterized in that: The radiator (10) is a multi-blade aluminum radiator.

4. The oven projection lamp according to claim 1, characterized in that: The power of the lamp bead (4) is 2-7W, and the light emitting angle of the lamp bead (4) is 120°.

5. The oven projection lamp according to claim 1, characterized in that: The lamp bead (4) is electrically connected to a power source via a wire, and the wire is a power supply wire group with a magnetic ring.

6. The oven projection lamp according to claim 1, characterized in that: The condenser lens (5) is a plano-convex lens, the plane of the condenser lens (5) is close to the side where the lamp bead (4) is arranged, and the first imaging lens (7) and the second imaging lens (8) are double-sided convex lenses.

7. The oven projection lamp according to claim 2 or 3, characterized in that: The lamp board (3) is an aluminum circuit board, and the heat sink (10) is connected to the lamp board (3) by bonding with heat-conducting adhesive.

8. The oven projection lamp according to claim 1, characterized in that: It also comprises a lamp housing (1), wherein a first convex rib (11) is arranged inside the lamp housing (1), an opening (12) is arranged on the side of the projection lens assembly housing (2), and the first convex rib (11) is movably fitted with the opening (12).

9. The oven projection lamp according to claim 1, characterized in that: The projection lens assembly shell (2) is provided with a strip groove (13), the end of the film assembly box (6) is movably matched with the strip groove (13), the film assembly box (6) comprises two detachably connected assembly frames (6a), and the film (9) is located in a limited space formed when the two assembly frames (6a) are attached.

10. The oven projection lamp according to claim 8, characterized in that: An elastic member (14) is provided on the outer wall of the lamp housing (1).

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